Does heating or A/C use more energy in a home?
Answer:
It depends on how much heating or cooling you are doing. Heating is less costly if you use gas than colling which uses electricity. But the main energy consumption comes from bridging the difference between your starting point and your ending point.
More energy in a home than... ?
depends on the Sq. Ft. of your house, the bigger the house is the more you pay, the small the less you pay for heating/AC
If you are using the same source of energy for both heating and cooling, then heating will use more energy.
Typically heating uses more energy. Typical in the midwest is a heating load about three times the cooling load.
Mark K,
You are not considering mechanical heating and cooling systems with your 3.41 BTU/Watt formula. Mechanical heating will produce (or remove in the case of mechanical airconditioning) more than 3.41 BTU/Watt.
Not true, Bob. An AC will move three times as much heat (or more) per watt as a straight resistance heater.
Depends on the climate. In Alaska, it's heat. In Mexico, it's AC.
Assume you're in a climate where the average temperature is 70 degrees, and you need an equal amount of heating and cooling.
Then AC will use more energy, because moving heat from inside to outside is a less efficient process than simply changing fuel into heat.
No matter what size home, more energy will be used.
Sorry, but this question cannot really be answered. The number BTU's needed will determine how much cooling or heating is needed.
To calculate BTUs, multiply the wattage by 3.413.
At the most basic level, there is a difference between the temperature of the heat or cool source and the temperature at which the heat or cooling is delivered. The larger this difference, the lower the efficiency.
It does not matter whether heat or cooling is being applied, it all depends on the amount of BTUs needed. Since BTUs are a simple math problem from the number of watts used, whether you are heating or cooling is immaterial - the cost is the same per BTU.
Depends on what kind of heating or cooling you're talking about. My house has electric A/C and a gas heater.
Money-wise, it seems to cost just as much to heat my house as to cool it. I don't know if that helps, but that's my two cents.
It depends on a lot of factors. If you provided a little more information you might get better answers.
Central a/c uses more energy than anything else in the home.
Running central a/c for 12 weeks is equivalent to leaving your refridgerator door open 24/7 365 days a year. Pretty amazing huh?!
A single window unit a/c uses 500-1440 watts.
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