View Full Version : Heat from a Heat Pump? How hot/warm should the air get?
05-13-2012, 10:18 PM
Okay, loving my newly installed rheem heat pump, but I am a little confused on how the heat pump actually works. How warm should the air get from a heat pump? Let's say the return temp is 69 degrees, outdoor temp is 65 degrees, what should the temp be for the air coming out of my vents? I have ran my heat pump a few times in heating mode to see how well the unit heats. I have had a thermostat on the vent, it says any where between 89 and 91 degrees, but many times the air feels cool to the touch. Is this normal? I am just adjusting to this new type of heat. I am coming from electric baseboard heat. Let me know what you experience is on this topic and thanks.
05-14-2012, 12:29 AM
Those temps are about right without the aux heat, you are getting a 20* indoor temperature split. If the Aux (elect or gas) heat kicks in you would get much warmer air of around 100-110. You will get a warmer feel by hand once your indoor temps are colder.
05-14-2012, 08:43 AM
In those warmer outdoor temps, you might see as high as a 25-30F temperature rise if your running normal 400CFM/ton airflow. Keep in mind that you'll lose some heat in the ductwork. You should measure the temperature rise close to the indoor coil.
If the outdoor temp is actually 65F, I'd say you might either be a little low on delivered BTU's, the airflow is a little high, or that particular match-up of equipment has a somewhat low delivered heat output.
I know I ran 350CFM/ton on the heat pump I had in my last home. IN 65F outdoor temps, I'd see a 30F temp rise. So around 100F air temps.
05-14-2012, 11:30 AM
Rough old school is 50* over outdoor temp.should have 110-115 out the closest vent to the unit.so on a 30*outside temp it should give you 80* and this will feel cool coming out the vent.Seems like you got it a little low.Just sayin. If it is charged correctly(and there should be a chart on the unit) you got what you got.
05-14-2012, 09:59 PM
I will also chime in and agree that the temp seems low for a 65F outdoor temp. I usually get temps over 95 down to about 45F outdoor temp... unless the house is also at 45...
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