Which uses more energy? turning central air off when the house is cool or turning the thermostat up a little?
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Answers:
you should get a programable thermostat to adjust temperature and time to save energy.
TRY LOWERNG THE SETTING ONE DEGREE
It is better to turn up the thermostat when you are gone for the day. That way you house maintains a constant temperature without going too high.
However, your house must be well insulated to take advantage of this. Keep window blinds closed to help out the air conditioner.
If your house is of brick construction then leave the heat on. The bricks will hold the heat and it takes a long time to heat them up from scratch.
But if your house is timber then switch off your heating when you go out.
In general, turn down your heat slightly and put on a jumper(sweater).
it cost more to turn the centeral air unit off and let the house get warm in side then it does to just bump up the thermostat because when you cut it off it has to run twice as loneg to get the house back to the temp. you had it set at so just turn it up and it will not run as long
Depends on when you turn it back on. If you turn it on before the temp you set the thermostat to higher, then you use more energy. It's the same thing - a thermostat just turms the central air off when the house is cool too. That's how it works.
Save yourself the trouble and just get a programmable thermostat.
If I understand you right then up a little would be less. Luka is right also.
To answer your question, if your thermostat is functioning properly, there is no difference. If the temperature is cool enough, the thermostat should not call for the unit to come on while it is cool. Therefore, unit "off" or "on", it will should come on, so power consumption is the same.
The problem is that some thermostats have a range that might cause the unit to come on when it doesn't really need to, or stay on longer than it needs to when it does come on. Therefore, to ensure a savings whether or not your thermostat functions properly, is to either turn it to "OFF", or to offset the temperature high enough to ensure that it will not come on.
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