Residential HVAC Mythbusting
Two nagging duct questions answered
In 11 Florida homes with roofs coated with a white material during midsummer, average air conditioning energy use decreased by 8 kWh/day, or 19%. [continue reading]
As part of its efforts to promote energy-efficient residential HVAC systems, the Sacramento Municipal Utility District (SMUD) looked into air conditioner sizing. [continue reading]
Along with conducting detailed load calculations of 40 Sacramento homes, we asked homeowners to complete a brief survey. [continue reading]
Exhausting heat and moisture in the summer can keep a house cooler and reduce air conditioning costs. And running a fan whenever someone is cooking will eliminate most water vapor, grease, and combustion products from the kitchen. [continue reading]
Most American thermostats measure only air temperature. But there are numerous other elements that affect thermal comfort, and some of these can be used to turn HVAC equipment on and off. [continue reading]
Wall insulation clearly saves heating energy, but does it save cooling energy as well? [continue reading]
Do homes with vented attics use less cooling energy than homes with unvented, conditioned attics in hot climates? With little formal research available to answer the question, common wisdom and most building codes have favored venting. [continue reading]
A 2015 study, “Impacts of global warming on residential heating and cooling degree-days in the United States,” comparing heating ...
“Why do you need to cool and heat the whole building? Why don’t you cool and heat ...