Thermostat recommendation

bus_driverDecember 4, 2012

A rental property has a heat pump with electric resistance auxiliary. When vacant, the heat needs to be sufficient only to prevent freezing. While the heat pump is only a couple of years old, the thermostat is a Janitrol with mercury switch that is at least 20 years old and has a minimum setting of 50 degrees.
Need your suggestions for a digital thermostat with 40 degrees minimum setting that is powered by the 24 volt control system (batteries not necessary), not-programmable, a clock function is not necessary. Preferably will light up the display when a button is pushed. Preferably would permit the user to select the differential at 1,2 or 3 degrees.
I do not know that controls the operation of the auxiliary.
If the thermostat is suddenly turned up 10 degrees, the auxiliary is actuated. I would like for that differential to be at least 2 degrees and adjustable to 3 degrees if possible.
One of the Gem Tech models has several of these features but not all of them.
Your suggestions are welcomed.

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Honeywell offers a few non-programmable thermostats which are compatible with heat pump. They can be set as low as 40 degrees. I am not sure if you you select the auxiliary heat differential.

Below is the link the the Honeywell thermostats. If you find one that may work for you, then call the Honeywell customer service assistance number. The customer assistance is supposed to answer questions for DIY installations. They can provide details not included in the manual.

Here is a link that might be useful: Honeywell thermostats

    Bookmark   December 4, 2012 at 8:18AM
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I have a Honeywell programmable which I really like, but if I was buying one now, I'd go for one that can be monitored and adjusted remotely:

Here is a link that might be useful: IP Thermostats

    Bookmark   December 8, 2012 at 1:50AM
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