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Old 02-01-2014, 08:04 PM   #1
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Heat pump problems

I have a Janitrol heating and cooling unit. When the heat pump kicks on it blows cold air until it defrosts. When it defrosts it blows hot air until it heats the house then it will kick off. If you turn the thermostat up from 72 to 80 it will heat the house in a minute but won't kick off. If you turn the thermostat down to 68, it kicks on and off perfect. At 72 the only way you get warm air is when it defrosts. Our heat bill went up over $100 last month so something is wrong. Does anyone have any ideas about what it might be?


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Old 02-01-2014, 10:41 PM   #2
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Do you mean that it was $100 more then it usually is, or that the bill was only over $100. I wish our heating bill for Natural gas & electric was only $100 a month.

If it is taking a long time in cold temperatures, for the Heat pump to do its job, either the reversing valve is going out, it is low on refrigerant, you need to have the thermostat checked, to make sure it is working properly, so that the heat strips in the furnace kick on, when the Heat pump cannot keep up with outdoor temperatures.

If you come back, we need model# of the indoor & outdoor units, how old it is, your location that this unit is at, coldest outdoor temperatures, when you are having this issue, how well insulated & sealed is the home or structure that you are using it in, and if this is a home or mobile home/manufactured home.


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Old 02-01-2014, 10:58 PM   #3
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Freezing up could mean a low charge and you are running on bacyup electric heat.
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Old 02-02-2014, 04:32 AM   #4
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Since its a Janitrol, its an older unit. They weren't real efficient at outdoor temps below 35 degrees. So with outdoor temps between 30 and 35, and an indoor temp of 68, you might get a 80 to 82 degree air temp from your registers, if its working right. With outdoor temps below 30 and above 15 degrees, you can expect air temps from your registers to be only 8 to 10 degrees warmer then room air temp, if its working right.

Your system may be low on charge. Might want to have it checked.
When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions.
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gregzoll (02-02-2014)
Old 02-03-2014, 03:33 PM   #5
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Also check and make sure your heat strips are kicking in at all. It could be that your heat strips need a little attention.
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