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+Technicians+Safety+and+Health+Section+Our+first+article+in+this+section+is+about+a+safety+and+health+related+issue+that+concerns+asbestos+and+the+ill+effects+asbestos+can+have+on+our+health.+Asbestos+is+commonly+found+around+pipe+insulation+in+older+buildings.+Make+yourself+aware+of+the+danger+and+how+it+can+drastically+affect+your+health+in+the+future.+Read+More...........R-410A+Versus+R-22+RefrigerantsR-410A+Versus+R-22+Refrigerants+What+new+HVAC+system+do+you+choose+when+buying%3F+An+R-22+system+or+an+R-410A+system%3F+This+article+will+help+you+make+a+better+decision.+Read+More.......Energy+Efficiency+Ratings+DefinedEnergy+Efficiency+Ratings+DefinedWhat+are+energy+efficiency+rating+definitions+and+how+do+they+affect+the+purchase+of+a+new+system%3F+What+is+the+energy+efficiency+ratings+of+the+air+conditioning+and+heating+system+you+want+to+buy%3F+This+article+will+help+you+understand+these+definitions+and+how+they+relate+to+HVAC.+Read+More........+New+article+just+uploaded+-+Two-stage+gas+furnaces.+Are+two-stage+gas+furnaces+really+as+efficient+as+claimed%3F+Find+out+in+our+new+two-stage+gas+furnace+article.+Read+More.......Air+Conditioning++Heating+MaintenanceAir+Conditioning++Heating+MaintenanceAir+Conditioning+and+Heating+Maintenance+Pages+and+Air+Conditioner+and+Heating+Repairs+will+help+everyone+and+anyone+who+owns+air+conditioning+and+heating+equipment+to+get+the+best+from+their+HVAC+heating+or+air+conditioning+systems+by+having+regular+maintenance+performed.+Whether+you+have+an+air+conditioner+or+heat+pump+these+pages+will+help+you+better+understand+how+a+good+preventive+maintenance+schedule+will+help+you+add+longevity%2C+less+down+time%2C+and+efficiency+to+your+air+conditioning+and+heating+equipment.Air+Conditioning++Heating+Site+UpdatesHigh+Performance+HVAC+Site+UpdatesRecent+updates+made+to+the+Boiler+Pages%2C+Gas+Furnace+Pages%2C+DDC+pages%2C+and+a+whole+brand+new+section+on+Water+Heaters.+Find+energy+savings+tips+about+your+hot+water+heaters%2C+how+to+select+the+best+water+for+you%2C+and+the+many+different+types+of+water+heaters+available+to+you.+New+section+called+air+conditioner+and+heating+troubleshooting.+Check+it+out+and+send+in+your+questions.People+seeking+careers+in+the+field+of+air+conditioning+and+heating+can+use+our+jobs+pages+to+find+an+entry+level+position+in+the+field+of+air+conditioning+and+heating+which+includes+air+conditioning+technicians%2C+heating+technicians%2C+and+maintenance+technician+positions.+Many+employers+offer+educational+opportunities+for+entry+level+candidates+so+that+you+get+on+the+job+training+while+studying+at+night+for+all+certifications.High+Performance+HVAC+is+currently+undergoing+a+site+upgrade.+You+will+notice+all+the+pages+migrating+to+the+current+design+as+you+see+it+here.+For+this+reason+we+have+had+to+change+a+few+things+however+in+the+future+after+the+transition+is+complete+High+Performance+HVAC+will+be+a+better+site.+We+thank+you+for+your+patienceHeat+Pump+InformationHeat+Pump+InformationVisit+the+Heat+Pump+section+where+you+can+learn+about+air+to+air+heat+pumps%2C+heat+pump+theory%2C+water+to+air+heat+pumps+or+geothermal+heat+pumps.+Just+follow+the+Heat+Pump+links+in+the+main+navigation+menu+or+click+on+Heat+Pumps.HVAC+Motor+CapacitorsHVAC+Motor+CapacitorsLearn+what+capacitors+are+used+for+in+the+air+conditioning+and+heating+industry%2C+how+capacitors+work+in+the+HVAC+system%2C+how+capacitors+are+rated%2C+how+to+safely+handle+a+capacitor%2C+and+how+to+determine+if+a+capacitor+is+bad.+Additional+pages+just+added+are+the+Soldering+and+Brazing+Page+and+the+lots+of+boiler+technical+information.Building+Automation+and+DDC+ControlBuilding+Automation+and+DDC+ControlBuilding+Automation+and+DDC+Control+Pages+to+help+building+managers+and+owners+better+understand+the+concepts+of+modern+energy+management+systems+so+that+they+may+get+the+most+from+their+systems+and+energy+budget.+The+Building+Automation+and+DDC+Control+Pages+are+also+a+good+resource+for+New+DDC+Control+technicians+interested+in+learning+the+basics.+Also+learn+about+DDC+programming+logic+and+the+many+different+logic+blocks+used+in+DDC+programs+for+air+conditioning+and+heating+control.hvac++++*++++*++++*++++*++++*++++**Read+moreAdd+comment+%280%29Hits%3A+497Last+Updated+on+Monday%2C+26+April+2010+01%3A44+Troubleshooting+Heat+PumpsTroubleshooting+heat+pumps%3F+We+found+an+article+in+a+number+one+position+for+troubleshooting+heat+pumps+and+we+had+to+set+the+record+straight.+We+are+looking+out+for+you+and+giving+you+accurate+information+for+troubleshooting+heat+pumps.+Check+out+our+article+on+troubleshooting+heat+pumps.How+Air+Conditioners+WorkHow+air+conditioners+work+is+hot+off+the+press+and+ready+for+you+to+learn+how+air+conditioners+work.+Have+you+ever+wondered+how+air+conditioners+work%3F+No+need+to+wonder+any+longer.+We+will+help+you+learn+how+air+conditioners+work.+Check+out+our+article+on+How+Air+Conditioners+Work.Boiler+MaintenanceHow+important+is+boiler+maintenance%3F+Read+the+boiler+maintenance+page.+Almost+as+if+by+rote+many+maintenance+departments+begin+their+annual+boiler+maintenance+in+late+summer+to+get+ready+for+the+cooler+weather.+Does+your+department+understand+how+important+the+code+is+or+do+they+take+all+this+for+granted%3F+Read+More+on+the+Boiler+Maintenance+PageHydronic+Pump+Cavitation%2C+Pump+cavitationfurnaces%2C+standing+pilot+furnace%2C+gas+furnacescondensing+unit+reviews%2C+air+conditioner+reviews%2C+gas+furnace+reviewsHot+Water+Boiler+InformationMany+people+use+boilers+for+heat.+How+do+boilers+work%3F+Visit+our+boiler+section+and+find+out+how+boilers+work+including+many+components+on+boilers+and+different+types+of+boilers.+We+also+have+an+article+on+boiler+maintenance+and+boiler+expansion+tanks.+We+have+boiler+information+for+you.Energy+Saving+TipsAccording+to+studies+done+by+the+Department+of+Energy%2C+50+percent+of+the+heat+loss+experienced+in+the+average+home+occurs+through+the+ceiling.+That+makes+a+lot+of+sense+since+heat+rises.+You+can+reduce+that+heat+loss+%28and+heat+gain+in+the+summer+months%29+by+adding+another+layer+of+insulation+in+the+attic.+That+will+hold+more+heat+in+our+homes+for+a+longer+period+of+time+which+means+the+furnace+will+cycle+less.+That+means+you+are+going+to+save+money.+A+lot+more+money+than+another+layer+of+insulation+costs.+Additionally%2C+having+an+attic+fan+controlled+by+a+thermostat+installed+in+your+attic+will+remove+a+lot+of+heat+in+the+summer.+This+will+help+you%2C+in+addition+to+having+more+insulation%2C+reduce+heat+gain+from+the+attic+in+the+summer.High+Efficiency+Gas+FurnacesHigh+efficiency+gas+furnaces+section+offers+you+basic+information+for+high+efficiency+furnaces.+We+cover+ignition+systems%2C+define+efficiency+standards%2C+and+tell+you+how+condensing+gas+furnaces+work.+We+also+have+plenty+of+graphics+and+photos+to+illustrate+how+high+efficiency+gas+furnaces+work.Furnace+SafetyCarbon+monoxide+detectors+are+important+to+own+for+those+people+who+burn+fossil+fuels+for+heat.+Carbon+monoxide+is+a+flammable%2C+colorless%2C+odorless%2C+tasteless+toxic+gas+produced+during+incomplete+combustion+of+fuel+-+Natural+Gas%2C+Oil%2C+Coal%2C+Wood%2C+Kerosene%2C+etc.+Someone+suffering+from+carbon+monoxide+poisoning+generally+has+severe+headaches%2C+nausea%2C+and+sinus+problems.+These+symptoms+generally+begin+with+mild+effects+and+people+usually+remain+unaware+of+what+the+exact+problems+is+until%2C+sometimes%2C+it+is+too+late.+How+many+cracked+heat+exchangers+or+faulty+furnaces+are+out+there+that+no+one+knows+anything+about+except+a+slight+headache+and+nausea%3F+Dont+take+any+chances%2C+get+your+carbon+monoxide+detector+and+call+your+local+heating+and+air+conditioning+company+for+a+heater+inspection+today.+Read+more+on+this+subject+on+the+Furnace+Page.Air+Conditioning+and+Heating+System+ReviewsHigh+Performance+HVAC+now+offers+HVAC+reviews+for+you.+Our+temporary+air+conditioner+and+heating+system+reviews+site+is+up+and+running.+We+also+have+reviews+of+thermostats%2C+boilers%2C+heat+pumps%2C+and+other+air+conditioner+and+heating+system+reviews.+Check+out+our+HVAC+reviews+now.Energy+Saving+TipsYou+can+add+energy+savings+by+placing+a+blanket+wrap+insulation+around+your+water+heaters.+Additionally%2C+for+electric+water+heaters%2C+you+can+have+a+timer+added+to+the+power+circuit+to+turn+the+water+heater+off+in+times+when+there+is+no+usage.+For+example%3A+Set+the+timer+to+turn+the+water+heater+off+from+10+p.m.+to+4+a.m.+Most+timers+can+be+customized+and+set+for+different+times+so+that+the+water+heater+is+turned+off+for+most+of+the+day+and+night.+This%2C+along+with+the+insulation+%28which+will+keep+the+water+hotter+longer%29%2C+can+save+in+energy+usage+and+your+energy+costs.High+Performance+HVAC+Air+Conditioning+and+HeatingImages+Digitally+Watermarked+by+Digimarc+%7C+Get+More+Information+on+How+to+Digitally+Watermark+ImagesImages+on+the+website+have+been+digitally+watermarked+with+ownership+and+usage+information.+Digimarc+and+the+Digimarc+logo+are+registered+trademarks+of+Digimarc+Corporation.+The+As+much+as+half+of+the+energy+used+in+your+home+goes+to+heating+and+cooling.+So+making+smart+decisions+about+your+homes+heating%2C+ventilating%2C+and+air+conditioning+%28HVAC%29+system+can+have+a+big+effect+on+your+utility+bills+%E2%80%94+and+your+comfort.+Take+these+steps+to+increase+the+efficiency+of+your+heating+and+cooling+system.+For+more+information%2C+see+our+Guide+to+Energy+Efficient+Heating++Cooling+PDF+%28708KB%29.Change+your+air+filter+regularlyCheck+your+filter+every+month%2C+especially+during+heavy+use+months+%28winter+and+summer%29.+If+the+filter+looks+dirty+after+a+month%2C+change+it.+At+a+minimum%2C+change+the+filter+every+3+months.+A+dirty+filter+will+slow+down+air+flow+and+make+the+system+work+harder+to+keep+you+warm+or+cool+%E2%80%94+wasting+energy.+A+clean+filter+will+also+prevent+dust+and+dirt+from+building+up+in+the+system+%E2%80%94+leading+to+expensive+maintenance+and%2For+early+system+failure.Tune+up+your+HVAC+equipment+yearlyJust+as+a+tune-up+for+your+car+can+improve+your+gas+mileage%2C+a+yearly+tune-up+of+your+heating+and+cooling+system+can+improve+efficiency+and+comfort.+Learn+more%3A++++*+Maintain+your+Equipment%3A+A+Checklist++++*+Finding+the+right+contractor%3A+10+tipsInstall+a+programmable+thermostatA+programmable+thermostat+is+ideal+for+people+who+are+away+from+home+during+set+periods+of+time+throughout+the+week.+Through+proper+use+of+pre-programmed+settings%2C+a+programmable+thermostat+can+save+you+about+%24180+every+year+in+energy+costs.Seal+your+heating+and+cooling+ductsDucts+that+move+air+to-and-from+a+forced+air+furnace%2C+central+air+conditioner%2C+or+heat+pump+are+often+big+energy+wasters.+Sealing+and+insulating+ducts+can+improve+the+efficiency+of+your+heating+and+cooling+system+by+as+much+as+20+percent+%E2%80%94+and+sometimes+much+more.Focus+first+on+sealing+ducts+that+run+through+the+attic%2C+crawlspace%2C+unheated+basement%2C+or+garage.+Use+duct+sealant+%28mastic%29+or+metal-backed+%28foil%29+tape+to+seal+the+seams+and+connections+of+ducts.+After+sealing+the+ducts+in+those+spaces%2C+wrap+them+in+insulation+to+keep+them+from+getting+hot+in+the+summer+or+cold+in+the+winter.+Next%2C+look+to+seal+any+other+ducts+that+you+can+access+in+the+heated+or+cooled+part+of+the+house.+See+our+See+our+Duct+Sealing+brochure+PDF+%281.13MB%29+for+more+information.+for+more+information.Consider+installing+ENERGY+STAR+qualified+heating+and+cooling+equipmentIf+your+HVAC+equipment+is+more+than+10+years+old+or+not+keeping+your+house+comfortable%2C+have+it+evaluated+by+a+professional+HVAC+contractor.+If+it+is+not+performing+efficiently+or+needs+upgrading%2C+consider+replacing+it+with+a+unit+that+has+earned+the+ENERGY+STAR.+Depending+on+where+you+live%2C+replacing+your+old+heating+and+cooling+equipment+with+ENERGY+STAR+qualified+equipment+can+cut+your+annual+energy+bill+by+nearly+%24200.+But+before+you+invest+in+a+new+HVAC+system%2C+make+sure+that+you+have+addressed+the+big+air+leaks+in+your+house+and+the+duct+system.+Sometimes%2C+these+are+the+real+sources+of+problems+rather+than+your+HVAC+equipment.Ask+about+Proper+Installation+of+your+new+equipmentReplacing+your+old+heating+and+cooling+equipment+with+new%2C+energy-efficient+models+is+a+great+start.+But+to+make+sure+that+you+get+the+best+performance%2C+the+new+equipment+must+be+properly+installed.+In+fact%2C+improper+installation+can+reduce+system+efficiency+by+up+to+30+percent+%E2%80%94+costing+you+more+on+your+utility+bills+and+possibly+shortening+the+equipments+life.Bar+chart+showing+cooling+efficiency+for+quality+installation+versus+problem+installationsMake+sure+to+ask+your+contractor+if+their+work+meets+guidelines+set+by+ENERGY+STAR+and+the+Air+Conditioning+Contractors+of+America+%28ACCA%29.+These+guidelines+include%3A++++*++++++Proper+Sizing+of+Equipment++++++Installing+the+right+size+equipment+for+the+home+is+essential+to+getting+the+best+performance+and+comfort.+Many+homeowners+believe+that+bigger+is+better+when+buying+new+heating+and+cooling+equipment.+But+in+reality%2C+a+system+thats+too+large+will+not+keep+your+home+comfortable+because+of+frequent+on%2Foff+cycling.+Incorrect+sizing+can+also+put+stress+on+system+components+and+shorten+the+equipments+life.+To+ensure+proper+sizing+your+contractor+should+provide+a+copy+of+the+homes+heat+gain%2Floss+calculations+for+your+records.++++*++++++Sealing+Ducts++++++To+ensure+that+ducts+are+properly+sealed+your+contractor+should+test+the+leakage+rate.+If+the+ducts+are+very+leaky+%28i.e.+more+than+20%25+of+the+air+moving+through+the+system+is+leaking+into+spaces+you+do+not+want+heated+or+cooled%29+your+contractor+should+use+duct+sealant+%28mastic%29%2C+a+metal-backed+%28foil%29+tape+or+an+aerosol+sealant+to+seal+the+seams+and+connections+of+ducts.+After+the+ducts+are+sealed+ask+your+contractor+to+wrap+them+in+insulation.++++*++++++Proper+Refrigerant+Charge+%28Central+Air+Conditioners+and+Heat+Pumps+Only%29++++++A+properly+charged+system+will+operate+more+efficiently+and+help+prolong+the+life+of+the+heating+and+cooling+system.+To+ensure+the+system+has+the+correct+amount+of+refrigerant+a+contractor+must+test+and+confirm+that+the+system+is+properly+charged.+If+the+system+is+not+properly+charged+the+contractor+should+make+the+appropriate+adjustment+by+adding+or+removing+refrigerant.++++*++++++Optimizing+Air+Flow++++++If+air+flow+in+your+heating+and+cooling+system+is+too+high+or+too+low%2C+you+may+confront+problems+and+higher+utility+bills.+A+contractor+should+test+air+flow+and+make+any+needed+adjustments+for+optimal+performance.++++++Use+the+ENERGY+STAR+quality+installation+checklist+PDF+%28350KB%29+when+soliciting+bids+from+contractors+to+help+ensure+that+your+system+is+properly+installed.Helpful+Tools++Resources++++*+Guide+to+Energy+Efficient+Heating++Cooling++++++English+PDF+%28708KB%29++++++Espa%C3%B1ol+PDF+%282.5MB%29++++*+Tips+for+Hiring+a+Heating+and+Cooling+Contractor++++*+Duct+Sealing+brochure+PDF+%281.13MB%29++++*+Maintenance+ChecklistENERGY+STAR+%40+homeCool+Your+World+with+ENERGY+STAR+%40+homeHome+Energy+YardstickUse+the+Home+Energy+Yardstick+to+Measure+Your+Homes+PerformanceGet+HEATING+and+COOLING+tips+from+ENERGY+STAREmail+a+link+to+this+page+to+a+friendEPA+SealEPA+HomeEPA+SearchDOE+SealDOE+HomeDOE+Search++++*+Products++++*+Home+Improvement++++*+New+Homes++++*+Buildings++Plants++++*+Partner+Resources++++*+Kids++++*+Publications++++*+News+Room++++*+FAQs++++*+Contact+Us++++*+Privacy++++*+Site+Index++++*+Recursos+en+Espa%C3%B1ol++++*+PDF+Viewer++++*+Flash+Viewer++++*+PowerPoint+Viewer++++*+Excel+ViewerHVAC+ContractorsFind+Top-Rated+HVAC+Pros+in+Your+Area.+Get+4+Free+Bids+Today%21www.ServiceMagic.comHVAC+Load+Calc+SoftwareHeat+Loss%2FGain+Residential++Comm-+ercial.+Easy%2C+contractor+friendly%21www.HVACComputer.comDuctwork+For+HomeownersInstall+All+Your+HVAC+Ductwork+Trunk%2C+Flex%2C+Boots%2C+And+More%21www.audubonsupply.comSizing+Hvac+SystemFind+Sizing+Hvac+System.+Search+For+The+Best+Deals.FreshDeals.comHVAC+CertificationTake+Online+HVAC+Courses++Earn+an+HVAC+Certification+from+Home%21www.HomeStudyCourses.infoHVAC+CertificationTake+Online+HVAC+Courses++Earn+an+HVAC+Certification+from+Home%21www.CareerCoursesAtHome.comHVAC+Training+OnlineLearn+the+Basement-to-Attic+Rules++Regs+of+Home+Inspection+100%25+Onlinewww.eLearners.com%2FHVACHVAC+Salary-Pay-WagesFind+out+Real-time+hvac+salary%2C+wage++pay+rangeswww.myopenjobs.comSpiral%2C+Round++Oval+DuctSpecializing+in+the+highest+quality+custom+products+and+services.www.semcoinc.comHVAC+SchoolsRequest+free+Info+from+HVAC+Schools+In+YouHome++Heating++Cooling+101++How+a+Central+AC+WorksHow+a+Central+AC+WorksFacts%3A++++*++++++The+typical+central+air+conditioning+system+is+a+split+system%2C+with+an+outdoor+air+conditioning%2C+or+compressor+bearing+unit+and+an+indoor+coil%2C+which+is+usually+installed+on+top+of+the+furnace+in+the+home.++++*++++++Using+electricity+as+its+power+source%2C+the+compressor+pumps+refrigerant+through+the+system+to+gather+heat+and+moisture+from+indoors+and+remove+it+from+the+home.++++*++++++Heat+and+moisture+are+removed+from+the+home+when+warm+air+from+inside+the+home+is+blown+over+the+cooled+indoor+coil.+The+heat+in+the+air+transfers+to+the+coil%2C+thereby+cooling+the+air.++++*+The+heat+that+has+transferred+to+the+coil+is+then+pumped+to+the+exterior+of+the+home%2C+while+the+cooled+air+is+pumped+back+inside%2C+helping+to+maintain+a+comfortable+indoor+temperature.++++*+Central+air+conditioning+can+also+be+provided+through+a+package+unit+or+a+heat+pump.Benefits%3A++++*++++++Indoor+comfort+during+warm+weather+-+Central+air+conditioning+helps+keep+your+home+cool+and+reduces+humidity+levels.++++*++++++Cleaner+air+-+As+your+central+air+conditioning+system+draws+air+out+of+various+rooms+in+the+house+through+return+air+ducts%2C+the+air+is+pulled+through+an+air+filter%2C+which+removes+airborne+particles+such+as+dust+and+lint.+Sophisticated+filters+may+remove+microscopic+pollutants%2C+as+well.+The+filtered+air+is+then+routed+to+air+supply+duct+work+that+carries+it+back+to+rooms.++++*++++++Quieter+operation+-+Because+the+compressor+bearing+unit+is+located+outside+the+home%2C+the+indoor+noise+level+from+its+operation+is+much+lower+than+that+of+a+free-standing+air+conditioning+unit.%C2%A9+2002-2009+Goodman+Manufacturing+Company%2C+L.P.+All+Rights+Reserved.Duplication+in+part+or+in+whole+is+strictly+prohibited.+++Home+++%7C+++Investor+Relations+++%7C+++Partner+Link+++%7C+++Contact+Us+++%7C+++Sitemap+++%7C+++Privacy+Policy+++%7C++++*++++++Using+electricity+as+its+energy+source%2C+heat+pumps+are+used+for+either+the+heating+or+cooling+of+your+home+by+transferring+heat+between+two+reservoirs.++++*++++++In+the+warmer+months%2C+the+heat+pump+acts+like+an+air+conditioner%2C+removing+heat+from+the+air+inside+your+home+and+transferring+it+outside.++++*++++++During+colder+months%2C+heat+from+outdoor+air+is+extracted+and+transferred+to+the+interior+of+your+home.+Believe+it+or+not%2C+even+a+32%C2%BA+Fahrenheit+day+produces+enough+heat+to+warm+a+home+via+a+heat+pump.Benefits%3A++++*++++++Year-round%2C+energy-efficient+indoor+comfort+for+moderate+climates+-+A+central+heat+pump+helps+maintain+comfortable+temperatures+inside+your+home+and+reduces+humidity+levels+year-round.+Homes+located+in+regions+with+severely+cold+temperatures+may+either+require+supplemental+heating+or+be+better+served+with+an+air+conditioner%2Ffurnace+combination.++++*++++++Cleaner+air+-+As+your+heat+pump+system+draws+air+out+of+various+rooms+in+the+house+through+return+air+ducts%2C+the+air+is+pulled+through+an+air+filter%2C+which+removes+airborne+particles+such+as+dust+and+lint.+Sophisticated+filters+may+remove+microscopic+pollutants%2C+as+well.+The+filtered+air+is+then+routed+to+air+supply+duct+work+that+carries+it+back+to+rooms.+Whenever+the+air+conditioner+is+running%2C+this+cycle+repeats+continually%2C+constantly+filtering+and+cleaning+the+air+in+your+home.++++*++++++Quieter+operation+-+Because+the+compressor+bearing+unit+of+the+typical+central+heat+pump+system+is+located+outside+the+home%2C+the+indoor+noise+level+from+its+operation+is+much+lower+than+that+of+a+free-standing+air+conditioning+unit.%C2%A9+2002-2009+Goodman+Manufacturing+Company%2C+L.P.+All+Rights+Reserved.Duplication+in+part+or+in+whole+is+strictly+prohibited.+++Home+++%7C+++Investor+Relations+++%7C+++Partner+Link+++%7C+++Contact+Us+++%7C+++Sitemap+++%7C+++++++*++++++A+furnace+works+to+keep+a+home+warm+in+the+winter+and+plays+a+critical+part+in+the+operation+of+an+air+conditioning+system.++++*++++++Furnaces+produce+heat+through+the+combustion+of+natural+gas+in+the+furnaces+burner.+The+heat+produced+from+this+process+then+passes+through+a+heat+exchanger.+Air+from+your+homes+return+air+ducts+is+blown+over+the+heat+exchanger%2C+thus+warming+the+air.++++*++++++The+furnaces+blower+then+blows+the+warmed+air+into+the+duct+work%2C+which+carries+and+disperses+the+warmed+air+throughout+the+home.++++*++++++During+warmer+months%2C+the+blower+inside+a+furnace+continues+to+circulate+return+air+throughout+the+home--only+this+time%2C+the+return+air+has+been+cooled+by+being+blown+over+the+indoor+coil+portion+of+the+homes+split-system+air+conditioning+system.+The+evaporator+coil+is+typically+installed+downstrean+of+the+furnace.Benefits%3A++++*++++++Indoor+warmth+any+time+it+is+required.++++*++++++Energy+efficiency+-The+efficiency+of+a+furnace+can+be+determined+by+its+AFUE--or+Annual+Fuel+Utilization+Efficiency.+The+minimum+efficiency+level+for+furnaces+currently+manufactured+in+the+U.S.+is+80%25+AFUE.+A+rating+of+80%25+AFUE+means+that+for+every+dollar+you+spend+heating+your+home%3B+80+cents+are+actually+applied+to+the+generation+of+warmth.+Compared+to+many+of+the+60%25+AFUE+furnaces+in+older+homes%2C+80%25+AFUE+furnaces+are+a+significant+improvement.+However%2C+for+enhanced+energy+efficiency%2C+you+may+wish+to+consider+a+95%25+AFUE+furnace%2C+such+as+Goodmans+line+of+95%25+AFUE+Furnaces.++++*++++++Cleaner+air+-+As+your+HVAC+system+draws+air+out+of+various+rooms+in+the+house+through+return+air+ducts%2C+the+air+is+pulled+through+an+air+filter%2C+which+removes+airborne+particles+such+as+dust+and+lint.+Sophisticated+filters+may+remove+microscopic+pollutants%2C+as+well.+The+filtered+air+is+then+routed+to+air+supply+duct+work+that+carries+it+back+to+rooms.+Whenever+the+HVAC+system+is+running%2C+this+cycle+repeats+continually%2C+constantly+filtering+and+cleaning+the+air+in+your+home.+++++++++1.++++++++++++This+cleaning+process+improves+with+the+installation+of+a+variable-speed+furnace.+Variable-speed+furnaces+use+variable-speed+blowers%2C+which+shift+between+several+speeds.+These+furnaces+will+run+longer+at+a+low+speed%2C+which+causes+them+to+filter+the+indoor+air+more+frequently.+++++++++2.++++++++++++And+remember+-+because+the+furnace+plays+an+important+role+in+the+operation+of+the+air+conditioner%2C+its+variable-speed+blower+helps+maintain+both+a+consistent+indoor+temperature+and+improved+air+quality+year-round.%C2%A9+2002-2009+Goodman+Manufacturing+Company%2C+L.P.+All+Rights+Reserved.Duplication+in+part+or+in+whole+is+strictly+prohibited.+++Home+++%7C+++Investor+Relations+++%7C+++Partner+Link+++%7C+++Contact+Us+++%7C+++Sitemap+++%7C+++Privacy+Policacts%3A++++*++++++Package+units+are+unique%2C+all-in-one+systems+that+supply+both+cooling+and+heating+equipment+in+one+package.+These+units+sit+on+the+ground+or+rooftop+outside+of+your+home+or+business.++++*++++++Package+units+come+in+three+forms%3A++++++++++o++++++++++++Packaged+heat+pumps+offer+heating+and+cooling+using+heat+pump+technology.++++++++++o++++++++++++Packaged+air+conditioners+cool+your+home+and+can+heat+it+as+well%2C+using+electrical+strip+heat.++++++++++o++++++++++++Packaged+gas-electric+units+offer+all-in-one+air+conditioning+and+natural+gas-powered+furnace+performance.Benefits%3A++++*++++++Space+efficiency+-+Unlike+split-system+units%2C+all+components+of+a+complete+heating+and+cooling+system+are+contained+in+one+location%2C+making+package+units+ideal+for+situations+in+which+indoor+space+is+at+a+premium.++++*++++++Energy-efficient+heating+and+cooling+performance+-+All+Goodman+package+units+offer+13+SEER+or+higher+cooling+performance.+Our+package+gas%2Felectric+units+offer+80%25+AFUE+heating+performance%2C+as+well.%C2%A9+2002-2009+Goodman+Manufacturing+Company%2C+L.P.+All+Rights+Reserved.Duplication+in+part+or+in+whole+is+strictly+prohibited.+++Home+++%7C+++Investor+Relations+++%7C+++Partner+Link+++%7C+++Contact+Us+++%7C+++Sitemap+++%7C+++P++++*++At+Goodman+Manufacturing+Company%2C+L.P.%2C+we+realize+that+purchasing+a+heating+or+air+conditioning+system+is+no+small+matter.+However%2C+if+your+existing+system+is+old%2C+in+need+of+repair+or+simply+inefficient%2C+purchasing+a+new+unit%2C+one+which+can+be+as+much+as+60%25+more+efficient+than+a+system+purchased+just+10+years+ago%2C+can+offer+long-term+benefits.++++*+Rather+than+continuing+to+pay+for+ongoing+maintenance+and+costly+monthly+bills%2C+invest+in+a+new+system+today+that+will+save+you+money+for+years+to+come.How+can+I+find+the+system+that%E2%80%99s+right+for+me%3FGet+the+facts+from+an+expert++++*+There+are+many+heating+and+air+conditioning+systems+to+choose+from+today.+Your+Goodman+dealer+can+draw+on+a+vast+degree+of+heating+and+air+conditioning+knowledge+and+experience+to+help+you+decide+on+the+system+that+best+fits+your+specific+needs.+The+size+and+age+of+your+home%2C+as+well+as+the+number+of+rooms%2C+climate%2C+local+and+regional+utility+costs%2C+and+utility+incentive%2Frebate+programs+are+all+factors+that+will+affect+the+functionality+and%2C+therefore%2C+selection+of+your+system.+Goodman+dealers%2C+utilizing+the+latest+technology%2C+consider+all+these+factors++while+assisting+you+in+choosing+the+best+system+for+your+home.++++*+Consumers+seeking+to+replace+an+existing+system+often+choose+a+new+unit+with+equal+or+higher+efficiency+ratings+compared+to+their+previous+system.+Replacing+a+unit+that+is+10-+to+15-years-old+may+reduce+natural+gas+or+electricity+costs+by+30+to+50%25.++++*+Contact+a+Goodman+dealer+to+help+determine+initial+cost%2C+warranty+protection%2C+service+options%2C+maintenance+options%2C+operating+cost+and+proper+installation.How+do+I+determine+the+size%2C+or+capacity%2C+of+my+HVAC+system%3FSchedule+a+Goodman+Manufacturing+dealer+visit++++*+Factors+affecting+the+size+of+your+new+system+include+the+climate+in+your+region%2C+humidity+levels%2C+the+number+of+windows+in+your+dwelling%2C+total+square+footage+of+your+home%2C+the+direction+your+home+faces%2C+the+number+of+heat-producing+appliances+in+your+home%2C+the+type+of+insulation+you+have+and+the+number+of+people+that+live+in+your+residence.++++*+A+Goodman+dealer+can+perform+the+proper+calculations+to+determine+the+appropriate+heating+or+cooling+unit+for+your+home+and+lifestyle.What+goes+into+installing+a+new+system%3FIt%E2%80%99s+all+about+the+ductwork.++++*+Putting+a+new+system+in+a+home+that+has+not+had+central+air+and+heat+before+will+require+the+installation+of+ductwork%2C+insulation%2C+refrigerant+piping%2C+electrical+service%2C+wiring%2C+thermostat%2C+condensate+piping%2C+flue+piping%2C+flue+terminations%2C+chimney+liner%2C+slabs%2C+filter%2C+driers%2C+registers%2C+grills%2C+drain+pans+and+evaporator+coil.+Beyond+equipment%2C+the+most+important+component+installed+with+a+new+system%2C+however%2C+is+the+ductwork.++++*+Ductwork+is+composed+of+two+parts%2C+supply+and+return.+Supply+duct+is+attached+to+the+outflow+of+the+new+system%2C+delivering+air+to+each+zone+in+a+home.+The+amount+of+air+reaching+each+zone+is+determined+by+the+size+of+supply+ductwork+connecting+it+to+your+system.+Your+dealer+will+help+you+determine+the+size+of+all+the+supply+ductwork+in+your+home.++++*+The+second+part+of+the+ductwork%2C+the+return+duct%2C+attaches+to+the+inlet+of+the+new+system+and+draws+air+out+of+the+spaces+to+be+heated+or+cooled.+Attached+to+the+return+duct+is+the+filter.+The+filter+should+be+placed+as+near+to+the+furnace+or+air+handler+as+possible.+Ductwork+can+be+either+fiberglass+or+metal+and+must+be+properly+sized+in+order+to+evenly+distribute+the+proper+amount+of+air+to+each+room.What+happens+when+I+replace+my+old+system%3FStart+with+a+detailed+inspection++++*+To+install+the+most+efficient+HVAC+system+in+your+household%2C+a+detailed+inspection+should+first+be+performed+by+your+installation+contractor.++++*+The+inspection+by+your+contractor+should+include%2C+as+a+minimum%2C+the+inspection+of+your+home%E2%80%99s+ductwork%2C+insulation%2C+refrigerant+piping%2C+electrical+service%2C+wiring%2C+thermostat%2C+condensate+piping%2C+flue+piping%2C+flue+terminations%2C+chimney+liner%2C+slabs%2C+filter%2C+driers%2C+registers%2C+grills%2C+drain+pans+and+evaporator+coil.How+long+will+my+system+last%3FProper+maintenance+is+key++++*+Maintenance+and+service+play+a+key+role+in+the+lifecycle+of+a+heating+or+air+conditioning+system.+If+all+recommended+maintenance+and+service+actions+are+taken%2C+an+air+conditioner+can+last+12+to+15+years+and+a+gas+furnace+20+to+25+years.Do+I+need+to+change+my+indoor+coil%3F++++*+It+is+generally+a+good+idea+to+replace+the+indoor+coil+if+you+are+also+replacing+your+air+conditioner+or+heat+pump.+There+is+a+correlation+between+the+efficiency+of+your+heating+or+cooling+system+and+the+performance+of+the+indoor+coil+and+changing+out+the+current+indoor+coil+for+a+new+one+may+be+critical+to+optimizing+the+performance%2C+the+efficiency+and+the+savings+potential+of+your+new+system.Where+can+I+locate+my+air+handler+or+furnace+system%3FYou+may+have+options+based+on+your+home%E2%80%99s+design++++*+The+system+can+actually+be+located+in+several+different+places.+A+system+with+up-flow+application+might+be+located+in+the+basement%2C+while+a+system+with+a+horizontal+application+may+be+found+in+your+attic.+A+self-contained%2C+or+single+package+unit%2C+could+be+located+outside+on+a+slab+or+on+the+roof.+Your+garage+could+house+an+up-flow%2C+down-flow+or+horizontal+application+system.What+is+a+heat+pump%3FAir+movement+from+point+A+to+point+B++++*+A+heat+pump+is+a+device+used+for+either+the+heating+or+cooling+of+a+space+by+transferring+hot+and+cold+between+two+reservoirs.++++*+A+heat+pump+can+act+like+an+air+conditioner%2C+transferring+heat+from+inside+to+out%2C+or+like+a+heater+as+it+transfers+exterior+heat+to+the+interior.+A+winter+day+with+a+temperature+of+32%C2%BA+Fahrenheit+still+produces+enough+heat+to+warm+a+space+when+the+air+is+transferred+by+heat+pump.What+can+I+do+to+control+the+humidity+levels+in+my+home%3FIt%E2%80%99s+all+about+variability++++*+Humidity+levels+can+be+reduced+by+using+a+variable-speed+furnace+or+air+handler+as+part+of+your+HVAC+system.+Variable+speed+units+run+longer%2C+at+lower+speeds%2C+allowing+air+to+constantly+circulate+against+the+cooling+coil+and+remove+more+moisture.++++*+Variable-speed+motors+also+use+less+electricity+than+regular+motors%2C+reducing+your+energy+costs.What+can+I+do+before+calling+someone+to+service+my+system%3FHVAC+systems+are+complicated+networks+of+machinery+that+should+be+serviced+by+a+certified+professional.+However%2C+if+your+HVAC+system+seems+to+be+malfunctioning%2C+you+can+try+a+few+basic+steps%2C+which+may+correct+your+problem%2C+prior+to+calling+a+service+professional.+If+you+do+not+feel+comfortable+performing+any+of+these+tasks%2C+however%2C+do+not+hesitate+to+call+an+HVAC+contractor.++++*+Disconnect+and+reconnect+your+indoor+and+outdoor+switches.++++*+Make+sure+your+circuit+breakers+are+in+the+ON+position.++++*+Make+sure+your+filters+are+clean.++++*+Open+supply+and+return+vents+and+make+sure+they+are+unobstructed.++++*+Check+the+settings+on+your+thermostat.++++*+Make+sure+the+system+switch+is+on+the+appropriate+COOL+or+HEAT+setting.What+is+AFUE%3F++++*+AFUE+is+the+abbreviation+for+Annual+Fuel+Utilization+Efficiency+ratio.+AFUE+is+used+to+rate+furnace+efficiencies+by+dividing+the+ratio+of+heat+output+by+heat+input.+This+measurement+describes+how+well+fuel%2C+gas+or+oil+is+consumed+to+produce+heat+by+a+furnace.+As+the+AFUE+rate+increases%2C+the+efficiency+of+your+furnace+also+increases%2C+lowering+your+fuel+costs.+Furnaces+manufactured+in+the+United+States+are+required+to+have+at+least+an+80%25+AFUE.What+is+HSPF%3F++++*+HSPF+is+the+abbreviation+for+the+Heating+Seasonal+Performance+Factor%2C+which+is+a+rating+of+the+efficiency+level+of+the+heating+operation+of+a+heat+pump.+The+higher+the+HSPF%2C+the+more+efficient+the+heating+performance+of+a+heat+pump.+New+units+in+the+United+States+have+HSPF+ratings+from+7.0+to+9.4.What+is+R-22%3F++++*+R-22+is+the+common+name+for+hydro-chlorofluorocarbon+%28HCFC%29.+R-22+has+been+used+as+a+refrigerant+by+HVAC+manufacturers+for+over+40+years%2C+but+studies+in+the+past+decade+have+shown+that+HCFCs+contain+chlorine%2C+an+ozone-depleting+agent.+For+this+reason%2C+the+United+States+Clean+Air+Act+has+set+a+target+date+for+January+1%2C+2010%2C+on+which+HVAC+manufacturers+must+cease+the+production+of+products+that+use+R-22.What+is+R-410A%3F++++*+R-410A+is+the+common+name+for+an+emerging+hydro-fluorocarbon+%28HFC%29+that+is+being+used+as+a+refrigerant+in+the+HVAC+industry.+R-410A+is+more+environmentally+friendly+than+R-22+and+is+being+seen+as+the+most+likely+replacement+for+R-22+by+HVAC+manufacturers.+At+the+beginning+of+2010%2C+the+use+of+alternate+refrigerant+will+be+required+in+HVAC+manufacturing.What+is+ENERGY+STAR%3F++++*+ENERGY+STAR+is+a+program+that+was+created+by+the+US+Environmental+Protection+Agency+%28EPA%29+to+help+businesses+and+individuals+make+energy+efficient+purchases.++++*+This+program+places+the+ENERGY+STAR+label%2C+a+small+blue+and+white+logo%2C+on+items+that+meet+superior+energy+efficiency+standards.+This+label+provides+an+easy+way+for+consumers+to+identify+quality%2C+high+efficiency+products.++++*+For+more+infomation+about+the+Energy+Star+program%2C+please+view+their+website+at+www.energystar.gov.%C2%A9+2002-2009+Goodman+Manufacturing+Company%2C+L.P.+All+Rights+Reserved.Duplication+in+part+or+in+whole+is+strictly+prohibited.+++Home+++%7C+++Investor+Relations+++%7C+++Partner+Link+++%7C+++Contact+Us+++%7C+++Sitemap+++%7C+++Privacy+Polic+++The+HVAC+industry+can+be+a+maze+of+unfamiliar+acronyms+and+industry+terms.+This+dictionary+will+help+you+navigate+the+most+common+terms+you%E2%80%99ll+come+across+during+your+buying+decision.A+B+C+D+E+F+G+H+I+K+L+M+N+O+P+R+S+T+U+V+W+ZAAC+Alternating+Current+-+A+type+of+current+where+the+polarity+is+perpetually+reversing%2C+causing+the+directional+flow+in+a+circuit+to+reverse+at+regular+intervals.ACCA+-+Air+Conditioning+Contractors+of+America.Acoustical+-+Relating+to+sound%2C+the+science+of+sound%2C+or+a+sense+of+hearing.AFUE+-+Annual+Fuel+Utilization+Efficiency.+A+measurement+used+to+rate+furnace+efficiencies+by+dividing+the+ratio+of+heat+output+by+heat+input.AGA+-+American+Gas+Association%2C+Inc.Air+Conditioner+-+A+device+that+changes+humidity+levels%2C+temperature+or+quality+of+air.Air+Flow+Volume+-+Measured+in+cubic+feet+per+minute+%28cfm%29%2C+this+is+the+amount+of+air+circulated+in+a+space.Air+Handler+-+Parts+of+a+system+including+the+fan-blower%2C+filter+and+housing.ARI+-+Air+Conditioning+and+Refrigeration+Institute.ASHRAE+-+American+Society+of+Heating%2C+Refrigeration+and+Air+Conditioning+Engineers.topBBTU+-+British+Thermal+Unit.+Measures+the+amount+of+heat+required+to+raise+or+lower+the+temperature+of+one+pound+of+water+one+degree+Fahrenheit.BTUh+-+British+Thermal+Units+per+hour.Burner+-+The+device+that+facilitates+the+combustion+of+air+and+gas.Burner+Orifice+-+The+opening+in+the+burner+through+which+the+gas+or+fuel+passes+prior+to+combustion.topCCapacity+-+HVAC+capacity+is+the+output+produced+by+the+heating+or+cooling+unit+and+is+measured+in+BTUs+per+hour.Celsius+-+A+temperature+scale+that+registers+the+freezing+point+of+water+as+0%C2%B0+and+the+boiling+point+as+100%C2%B0+under+normal+atmospheric+pressure.CFM+-+Cubic+Feet+per+Minute.+A+measurement+of+airflow+volume.Charging+a+System+-+Adding+coolant%2C+or+refrigerant%2C+to+an+HVAC+system.Compressor+-+A+pump+that+increases+the+pressure+of+gas.Condensate+-+Vapor+that+is+turned+into+a+liquid+as+its+temperature+is+lowered.Condenser+Coil+-+Also+an+outdoor+coil.+A+device+that+removes+heat+from+the+refrigerant%2C+allowing+the+refrigerant+to+be+converted+from+vapor+to+liquid.Condenser+Fan+-+A+fan+that+passes+air+over+the+condenser+coil+to+facilitate+the+removal+of+heat+from+the+refrigerant.CSA+-+Canadian+Standards+Association.topDDC+-+Direct+Current.+A+type+of+electrical+current+that+only+flows+in+one+direction.Damper+-+Found+at+the+exit+point+of+ductwork%2C+this+plate+usually+contains+grates+that+can+be+opened+or+closed+to+control+the+flow+of+air+into+a+zone.Degree-Day+-+Calculated+by+subtracting+the+average+outdoor+temperature+for+an+area+from+65%C2%BA+Fahrenheit.+This+measurement+is+used+to+estimate+the+amount+of+heating+or+cooling+a+home+or+building+will+need.Dehumidifier+-+A+device+that+removes+humidity%2C+or+moisture%2C+from+the+air.Diffuser+-+A+grille+over+an+air+supply+duct+with+vanes+that+distribute+the+discharging+air+in+a+specific+pattern+or+direction.DOE+-+Department+of+Energy.Downflow+Furnace+-+A+furnace+with+an+intake+on+the+top+and+an+air+discharge+at+the+bottom.Drain+Pan+-+Also+a+condensate+pan.+As+the+refrigerant+vapor+is+liquefied%2C+the+drain+pan+collects+the+condensate+and+funnels+it+to+the+drain+line.Dry+Bulb+Temperature+-+The+temperature+as+measured+without+the+consideration+of+humidity.Ductwork+-+A+network+of+metal%2C+fiberboard+or+flexible+material+flowing+throughout+a+space+which+delivers+air+from+an+HVAC+unit+to+the+respective+zones+of+a+home+or+office.topEEER+-+Energy+Efficiency+Ratio.EPA+-+Environmental+Protection+Agency.Expansion+Valve+-+A+valve+that+meters+the+levels+of+refrigerant+through+a+temperature+or+pressure+control.Evaporator+Coil+-+Also+an+indoor+coil.+A+device+that+is+designed+to+absorb+heat+in+the+air+in+order+to+change+the+liquid+refrigerant+that+flows+through+it+into+a+vapor.topFFahrenheit+-+A+temperature+scale+in+which+water+freezes+at+32+degrees+and+boils+at+212+degrees+at+normal+atmospheric+pressure.Fan+-+A+device+that+creates+air+flow.Filter+-+A+device+that+acts+like+a+strainer+to+remove+dirt+or+undesired+particles.Flue+-+A+vent+that+removes+the+byproducts+of+combustion+from+a+furnace.Furnace+-+The+major+component+in+heating+a+home.+A+device+that+facilitates+the+combustion+of+fuel+and+air+to+create+heat.Fuse+-+A+delicate+metal+strip+connecting+two+parts+of+an+electrical+circuit.+This+strip+breaks%2C+or+melts%2C+in+the+event+of+excess+electrical+charge%2C+breaking+the+electrical+circuit.topGGAMA+-+Gas+Appliance+Manufacturers+Association.topHHeat+Exchanger+-+A+device+through+which+heat+is+transferred+to+a+cold+area+or+surface.Heat+Gain+-+The+amount+of+heat+added+or+created+in+a+designated+area.Heating+Coil+-+A+coil+that+acts+as+a+heat+source+for+a+heating+system.Heat+Loss+-+The+amount+of+heat+subtracted+from+a+designated+area.Heat+Pump+-+A+device+used+for+either+the+heating+or+cooling+of+a+space+by+transferring+heat+between+two+reservoirs.Heat+Transfer+-+Moving+heat+from+one+location+to+another.HSPF+-+Heating+Seasonal+Performance+Factor.+This+factor+rates+the+efficiency+of+the+heating+portion+of+the+heat+pump.Humidifier+-+A+device+that+adds+humidity%2C+or+moisture%2C+to+the+air.Humidistat+-+The+device+that+measures+humidity+and+turns+the+humidifier+on+and+off.Humidity+-+Dampness+in+the+air+caused+by+water+vapor.HVAC+-+Heating%2C+Ventilation+and+Air+Conditioning.topIIgnition+-+Elevating+the+temperature+of+a+substance+to+the+point+of+causing+a+combustion+reaction.topKKilowatt+%28kW%29+-+1%2C000+watts.topLLatent+Heat+-+A+type+of+heat+that+when+added+to+an+area+produces+an+effect+other+than+an+increase+in+temperature.topMMedia+-+The+fine+material+of+a+filter+that+traps+dirt%2C+dust%2C+mildew+or+bacteria.topNNEC+-+National+Energy+Council+%2F+National+Electric+Code.NEMA+-+National+Electrical+Manufacturing+Association.topOOrifice+-+An+opening+or+hole.topPPackage+Unit+-+A+heating+and+cooling+system+contained+in+one+outdoor+unit.PSI+-+Pounds+per+square+inch.PSIA+-+Pounds+per+square+inch%2C+absolute.PSIG+-+Pounds+per+square+inch+gauge.PVC+-+Polyvinyl+chloride%3B+a+type+of+plastic.topRReciprocating+Compressor+-+A+type+of+compressor+used+in+cooling+systems+to+compress+refrigerant+by+using+a+piston+action.Refrigerant+-+A+chemical+that+condenses+from+a+vapor+to+liquid+and%2C+in+the+process%2C+decreases+in+temperature.Refrigerant+Charge+-+The+amount+of+refrigerant+in+a+system.topSSEER+-+Seasonal+Energy+Efficiency+Ratio.+A+rating+system+developed+by+the+U.S.+Government+to+indicate+the+efficiency+level+of+cooling+equipment.Self-contained+System+-+A+package+unit.Sensible+Heat+-+Heat+added+or+subtracted+that+causes+a+change+in+temperature.Sensor+-+A+device+that+reacts+to+a+change+in+conditions.Split+System+-+An+outdoor+unit+combined+with+an+indoor+unit.topTThermostat+-+Sensors+that+monitor+and+control+the+output+of+an+HVAC+system.Thermostatic+Expansion+Valve+-+A+device+that+creates+a+constant+evaporator+temperature.Ton+-+One+ton+is+12%2C000+BTUs+per+hour.topUUpflow+Furnace+-+A+furnace+that+pulls+in+air+from+the+bottom+and+releases+it+through+the+top.topVVacuum+-+A+space+where+the+pressure+is+significantly+below+that+of+standard+atmospheric+pressure.Volt+-+A+unit+of+electro-motive+force.Voltage+-+The+force+pushing+electrical+current+along+wires+and+cables.topWWatt+-+The+unit+of+electrical+power+equal+to+the+flow+of+one+amp+at+a+potential+difference+of+one+volt.Wet+Bulb+Thermometer+-+A+thermometer+that+measures+the+relative+humidity+in+the+air.topZZoning+-+A+system+that+divides+a+home%2C+office+or+space+into+different+regions+in+order+to+better+control+the+temperature+and+effectiveness+of+a+heating+and+cooling+system.+++1.++++++Heater+-+Ceramic+Heaters+-+Electric+Heaters+-+Gas+Heaters+-+Patio+...++++++Heater+Store+is+your+heater+headquater+with+a+extensive+selection+of+heaters+and+heater+accessories+for+personal+and+commercial+use+including+heaters+...++++++Heaters+-+Gas+Heaters+-+Radiant+Heaters+-+Wall+Heaters++++++www.heater-store.com%2F+-+Cached+-+Similar+++2.++++++Heater+-+Wikipedia%2C+the+free+encyclopedia++++++A+heater+is+any+object+that+emits+heat+or+causes+another+body+to+achieve+a+higher+temperature.+In+a+household+or+domestic+setting%2C+heaters+are+commonly+used+...++++++en.wikipedia.org%2Fwiki%2FHeater+-+Cached+-+Similar+++3.++++++Shopping+results+for+HEATER++++++DeLonghi+Oil+Filled+Radiator+Heater+with+ComfortTemp+Button++++++Rated+4.1+out+of+5.0+++++++++++++++++++++++++++++++++++%2813%29++++++%2442+new++++++60+stores++++++Lasko+754200+Ceramic+1500W+Heater+w%2FAdjustable+Thermostat%2C+7W+x+6D+...++++++Rated+4.4+out+of+5.0+++++++++++++++++++++++++++++++++++%2816%29++++++%2418+new++++++109+stores++++++Lasko+755320+Remote+Control+Ceramic+Tower+Heater+with+Digital+Display++++++Rated+4.5+out+of+5.0+++++++++++++++++++++++++++++++++++%28336%29++++++%2441+new++++++24+stores++++++Lasko+5369+2+Speed+Ceramic+Tower+Heater+1500+Watt++++++Rated+3.9+out+of+5.0+++++++++++++++++++++++++++++++++++%2819%29++++++%2433+new++++++120+stores++++++Lasko+5570+Digital+Ceramic+Tower+Heater+with+Electronic+Remote+Control++++++%2448+new++++++68+stores+++4.++++++Heaters+from+The+heater+shop.+Online+sales+of+gas+and+electric+...++++++Heaters+from+the+heater+shop%2C+we+have+online+sales+for+all+types+of+heaters.+Space%2C+Room%2C+Convection+and+other+types+including+patio+heaters%2C+forced+air%2C+...++++++www.heatershop.com%2F+-+Cached+-+Similar+++5.++++++Amazon.com%3A+Mr.+Heater+MRHF273400+Buddy+Portable+LP+Gas+Heater+...++++++The+Portable+Buddy+propane+heater+gives+you+instant+heat+indoors+or+out.+At+eight+pounds%2C+the+heater+can+be+taken+just+about+anywhere.+...++++++www.amazon.com+%E2%80%BA+...+%E2%80%BA+Home+Appliances+%E2%80%BA+Space+Heaters+-+Cached+-+Similar+++6.++++++Space+Heater+Reviews%3A+Best+Space+Heater++++++ConsumerSearch+analyzes+expert+reviews+and+owner+evaluations+of+space+heaters%2C+identifying+models+that+heat+consistently+and+safely.++++++www.consumersearch.com%2Fspace-heaters+-+Cached+-+Similar+++7.++++++Mr.+Heater+-+Americas+Most+Popular+Portable+Heaters++++++Manufacturer+of+portable+propane+forced+air+and+convection+heaters%2C+wall-mounted+and+overhead+natural+gas+and+propane+heaters.++++++www.mrheater.com%2F+-+Similar+++8.++++++Water+Heater%2C+Whole+Home+Gas+Tankless+%3A+ENERGY+STAR++++++By+heating+water+only+when+you+need+it%2C+ENERGY+STAR+qualified+tankless+water+heaters+save+the+typical+family+more+than+%24100+per+year+on+gas+bills+compared+...++++++www.energystar.gov+%E2%80%BA+...+%E2%80%BA+Find+ENERGY+STAR+Products+-+Cached+-+Similar+++9.++++++Electric+Heaters+Garage+Heater+Shop+Baseboard+Space++Wall+Heat+Units++++++Free+Same+Day+Shipping+on+Electric+Heaters%2C+Garage+Heaters%2C+Space+Heaters%2C+along+with+a+full+line+of+Wall%2C+Baseboard%2C+and+other+portable+electric+heaters.++++++www.heater-home.com%2F+-+Cached+-+Similar++10.++++++YouTube+-+Samim+-+Heater+++++++++++++3+min+3+sec+-+Oct+4%2C+2007+-++++++Rated+4.8+out+of+5.0++++++++++++++++++++++++++++++++++queuesamim+-+heater+%28+original+mix+%29+hqem293986+viewsbogdanstan+...+queueSAMIN+HEATER%3A+house+elettrONICA+con+la+fisarmONICA188174+...++++++www.youtube.com%2Fwatch%3Fv%3DNZ806mlFoMY+-+Related+videos++++++Get+more+video+results++11.++++++Heater+%7C+Outdoor+Heater+%7C+Portable+Heater+%7C+Coleman.com++++++No+hoses.+No+cords.+No+flames.+Just+heat.+Visit+Coleman.com+to+find+a+large+variety+of+heaters+like+SportCat+catalytic+heater%2C+GolfCat+catalytic+heater+and+...++++++www.coleman.com%2Fcoleman%2FColemanCom%2Fsubcategory.asp%3F...+-+Cached+-+SimilarSearches+related+to+HEATERportable+heater+space+heater+electric+heater+room+heaterpropane+heater+garage+heater+home+heater+oil+heater+++1.++++++Portable+Air+Conditioners++++++www.ETopp.com++++++Several+Sizes+To+Fit+Your+Needs+Get+A+Fast%2C+Free+Quote+Online+Now%21+++2.++++++Portable+Air+Conditioners++++++www.spot-coolers.com%2F++++++Sales++Rental%3A+Lowest+Prices+Server+Rooms%2C+Offices%2C+Industrial+++3.++++++Save+%24325+on+New+Furnaces++++++SearsHomeImprovements.com++++++Get+A+New+Furnace+on+Any+Budget%21+Sears+-+The+Name+You+Trust+in+HVACBrands+for+AIR+CONDITIONING%3A+Carrier+Trane+Lennox+Goodman+RheemSearch+Results+++1.++++++Air+conditioning+-+Wikipedia%2C+the+free+encyclopedia++++++Air+conditioning+is+the+dehumidification+of+indoor+air+for+thermal+comfort.+In+a+broader+sense%2C+the+term+can+refer+to+any+form+of+cooling%2C+heating%2C+...++++++History+-+Air+conditioning+applications+-+Humidity+control++++++en.wikipedia.org%2Fwiki%2FAir_conditioning+-+3+hours+ago+-+Cached+-+Similar+++2.++++++Air+conditioner+-+Wikipedia%2C+the+free+encyclopedia++++++An+air+conditioner+is+a+home+appliance%2C+system%2C+or+mechanism+designed+to+dehumidify+and+extract+heat+from+an+area.+The+cooling+is+done+using+a+simple+...++++++en.wikipedia.org%2Fwiki%2FAir_conditioner+-+20+hours+ago+-+Cached+-+Similar+++3.++++++HowStuffWorks+How+Air+Conditioners+Work++++++Thru-Wall%2FWindow%2C+8000+BTU%2Fhr%2C+10.8+EER%2C+With+Remote+Control%2C+Reusable+Filter+...+Portable%2C+12966.14+BTU%2Fhr+...+Thru-Wall%2FWindow%2C+10000+BTU%2Fhr%2C+9.4+EER%2C+...++++++www.howstuffworks.com+%E2%80%BA+...+%E2%80%BA+Household+Appliances+-+Cached+-+Similar+++4.++++++Local+business+results+for+AIR+CONDITIONING+near+San+Angelo%2C+TX+++++++-+Change+location+-+Back+to+results++++++++++++++++++++Benjamin+Franklin+Plumbing++++++benjaminfranklinplumbing.com+-+%28325%29+653-2616+-+1+review+++++++++++++Huffman+Heating++Air+Conditioning++++++maps.google.com+-+%28325%29+947-3690+-+1+review+++++++++++++Bowles+Heating++Cooling++++++maps.google.com+-+%28325%29+651-6244+-+More+++++++++++++Aircon+Heating++Air+Conditioning++++++maps.google.com+-+%28325%29+658-3282+-+More+++++++++++++Unlimited+Air++++++unlimited-air.com+-+%28325%29+659-4353+-+More+++++++++++++Lane+Weather+Mart+Inc++++++maps.google.com+-+%28325%29+653-5261+-+More+++++++++++++Bearing+Service+and+Supply++++++maps.google.com+-+%28325%29+653-6886+-+More++++++++More+results+near+San+Angelo%2C+TX+%C2%BB++++++++++++++Remember+this+location+++5.++++++Trane+Air+Conditioning+Solutions+-+Air+Conditioner%2C+Heating+amp+...++++++Whether+its+an+air+conditioner%2C+air+cleaner%2C+filters%2C+heat+pump+or+furnace%2C+experience+the+total+comfort+of+Tranes+heating+and+cooling+solutions+today.++++++www.trane.com%2F+-+Cached+-+Similar+++6.++++++Carrier+Corporation%3A+The+World+Leader+in+Air+Conditioning%2C+Heating+...++++++Carrier+is+the+world+leader+in+air+conditioners%2C+furnaces%2C+hvac+and+central+air+conditioning+products%2C+providing+air+conditioning%2C+heating+and+refrigeration+...++++++www.carrier.com%2F+-+Cached+-+Similar+++7.++++++Home+Tips+%3A+Air+Conditioning+%2F+Air+Conditioner+Buying+Guide++++++Free+advice+on+Air+Conditioning+%2F+Air+Conditioner+Buying+Guide+from+leading+home+improvement+and+Buying+Guides+expert+Don+Vandervort.+****++++++www.hometips.com%2Fbuying...%2Fairconditioning.html+-+13+hours+ago+-+Cached+-+Similar++++++Get+more+results+from+the+past+24+hours+++8.++++++Air+Conditioning%2C+Central+%3A+ENERGY+STAR++++++If+your+central+air+conditioning+unit+is+more+than+12+years+old%2C+replacing+it+with+an+ENERGY+STAR+qualified+model+could+cut+your+cooling+costs+by+30%25.+...++++++www.energystar.gov+%E2%80%BA+...+%E2%80%BA+Find+ENERGY+STAR+Products+-+Cached+-+Similar+++9.++++++Air+Conditioning+%7C+Heating+%7C+HVAC+Systems++++++Lennox+provides+the+best+in+home+heating+and+cooling+with+top+of+the+line+furnaces%2C+air+conditioners%2C+and+many+other+home+hvac+system+products.++++++www.lennox.com%2F+-+Cached+-+Similar++10.++++++YouTube+-+How+Air+Conditioning+Work+++++++++++++1+min+24+sec+-+Mar+9%2C+2007+-++++++Rated+4.4+out+of+5.0++++++++++++++++++++++++++++++++++Air+conditioning+has+fundamentally+changed+how+people+experience+the+world.+When+its+hot+outside%2C+walking+into+an+air-conditioned+house+is+like+...++++++www.youtube.com%2Fwatch%3Fv%3D1MiQCBIx1mM+-+Related+videos++++++Get+more+video+results++11.++++++American+Socie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