It’s wintertime in the northern hemisphere and also that way we’re heater our homes. The brand-new year started off a little on the warmth side, with the temperature at almost 70° F (21° C) right here in the Atlanta area. In terms of heating degree days (HDD), we’ve gone from around 12 HDD/day in ~ the beginning of the month to 24 HDD/day in the previous week. Through only 4 days to go in the month, we’re in ~ 515 HDD and also probably won’t hit our mean of 684 HDD because that January so it might be another down year for heating degree days here.

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Still, through temperatures dropping right into the short 20s Fahrenheit because that the next pair of nights, we’ll have actually lots of need for heating in the ATL. And also nearly every one of that heating will certainly come from among these three sources.


This one’s common in numerous places the do significant heating. It’s the heating system that extracts the warm from burning natural gas or propane, the boiler burning natural gas or fuel oil, and also woodstoves burning wood. Fuel like organic gas (which is largely methane), propane, fuel oil, and also wood contain chemistry energy. The process of combustion releases that power in the kind of heat. Then the heat is dispersed through the living room with air ducts and also hydronic tubes.


But catching solar radiation for warmth turned the end to be greatly a deadend. Together Martin Holladay has shown, superinsulation winner the fight between more windows or more insulation (pdf). Now we know it’s much better to usage that solar radiation to do electricity.

In the end, if you’re wondering where the heat in your residence comes from, it’s virtually certainly one of the three main sources: combustion, electric resistance, or the out air, ground, or water.

See more: 2002 Chevy Silverado Radio Wiring Diagram, 2002 Chevrolet Silverado 1500

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