Heat pumps naturally go through “on-off” cycles in order to maintain a specific temperature in your home. A heat pump measures ambient room temperature differently than your old heating system. "Repipe for primary/secondary piping, add a pump, AND maybe get a bigger pump at the heat source". Adjust the heat-anticipator lever one calibration mark closer to the … My 2.5 ton three day old Rheem heat pump is not cooling. If so, everything is fine. If your heat pump can keep your home warm down to, say, 30 degrees F, but your balance point is set to switch over to backup heat at 40 degrees, then anytime the temperature is in the 30- to 40-degree range, you’ll be paying too much for heat (if you use electric backup heating). Thermostat problems are extremely common, and they generates many service calls. Before assuming the fact that some technical problems lead your thermostat not reaching the set temperature you need to consider the fact that maybe you are using a wrong sized thermostat. Set the temperature higher while you are gone so it is not continually burning energy. With a heat pump, if you bounce the thermostat up and down, then what happens is you force the electric-resistance heater to come on and that costs about twice as much or more to run than the heat-pump system. Search: Search. When the temperature in your home drops approximately 2 degrees below room temperature, supplemental heat comes on to assist the heat pump (usually in the form of electric resistance heaters). Do the following to prevent or reduce the risk of heat pump not defrosting issue: Remove leaves and debris from the outdoor coil. My 2 yr old Goodman heat pump compressor comes on every 20 minutes for about 6 minutes AFTER it has reached the desired temperature. 1-270-575-9595. heat pump not reaching set temp I have an electric heat pump w/ electric backup, and it works fine until the outside temps get down in the twenties and then it won't get above 65 in my house, no matter what I set the thermostat to. The room thermostat only turns the boiler off when the temperature has reached its target, it does not set the temperature of the radiators, so look at your boiler and see if the heat the boiler kicks out is set high or low, if it is low then the house is going to struggle based on the radiator size you have.. I have an Amana model # ASZC16 heat pump and a Honeywell programmable thermostat.I have it set for 69 at night and 67 during the day. As long as that’s happening, everything’s hunky-dory. Mitsubishi H2i heatpump with ducted air handler not reaching set temp Hi, if anyone else is using this kind of heating setup (PUZHA 42NKA heat pump or similar H2i unit) combined with an air handler (mine is PVA A42AA7) please post your experiences with the performance of this system in heating. Because every heat pump has electric resistance built into the back of it. I set the therostat at 75. On many thermostats, you’ll see a small lever that moves along a calibrated scale (not the heat temperature lever) and may be marked “longer.” This is the heat-anticipator adjustment. What to do if your heat pump is blowing cold air. True, the efficiency does decline slightly as the temperature goes down, but even at very cold, single digit temps, heat pump efficiency is impressive and always better than any other setting on your thermostat. Ht. The thermostat stops the heat/cool call at the set point, and starts the call 2 degrees above or below the set point. 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