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It's a common misconception, at least in the US, that AC uses more power than heat. Tons of people leave the AC off to "save power" but almost nobody turns down
by nullwasamistake 7y ago
It's a common misconception, at least in the US, that AC uses more power than heat. Tons of people leave the AC off to "save power" but almost nobody turns down heat in the winter.
The article touches on this, but AC in hot areas is far more energy efficient than heating in cold ones, because humans prefer a balmy ~75 degrees. Even in the hottest places, there's only a 30 degree difference inside and outside. In areas where temps get below freezing, you need to maintain 40 degree+ difference.
What the article doesn't mention, is that AC is also 3-10X more efficient than heat even without factoring in temperate difference. In warm areas we can use heat pumps for heat and AC which function by moving heat from one side to the other. The downside is that they don't work well in cold temperatures.
In cold areas you can't move heat, there's just not enough of it, so you have to create it. This is massively inneficient and makes living in warm/hot areas far more eco friendly than somewhere like chicago
- seanmcdirmid 7y agoIn dry areas, you can also use a swamp cooler, though you might be SOL if you don’t have a backup during typhoon season.
- sokoloff 7y ago> The downside is that [heat pumps] don't work well in cold temperatures. There are now low temperature or "hyper heat" heat pumps which can function effectively to temperatures well below freezing, some as low as 5° F (-15° C). Your point is not "wrong", but simply "somewhat less true than it used to be".