Turn ptac off or down at night

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Old 11-23-20, 07:50 PM
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Turn ptac off or down at night

We have a 4 season room with a separate ptac (heat pump with electric strip backup version) unit. The room is used of and on throughout the day from 8a to 8p time frame but normally we will not be in it at all the other 12 hours.

during that time Is it more cost effective to turn the unit off or to set it back to the minimum heat setting of 58 degrees, knowing that we will turn it up to about 66 in the morning
 
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Old 11-23-20, 08:13 PM
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It depends on how high an electric bill you want.

A heat pump takes hours to supply heat. It operates slow and steady.
It doesn't respond well to setbacks.

When the room temperature is 3° or more degrees under the set temperature.... the electric reheat coils are energized along with the heat pump to recover faster. The electric elements use a lot more electricity than the heat pump does making setback not always cost effective.
 
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Old 11-23-20, 08:17 PM
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So your saying letting it run all night at 63 would be cheaper as it wouldn’t have to kick on electric heat?

the room is approximately 200 sf and well insulated.
 
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Old 11-23-20, 08:29 PM
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I would let it run all night.
 
 

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