Recommendations for Heat Pump Thermostat?

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Old 11-06-10, 11:55 AM
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Recommendations for Heat Pump Thermostat?

I'm giving up on the Ritetemp 6080 last fall for my Carrier "Day & Night" heat pump (circa 1987 ) and am looking for recommendations. I have had occasions where the A/C has run all night and cooled the house down to 63F in summer, and recently had the heat stay on continuously overnight until the house was 83F. (I had to turn off the circuit breaker to get the outside unit to stop). It also will not run the A/C without turning on the resistive heat, so I have to disconnect it during summer.

Jay previously recommended the Honeywell RTH7500 or RTH7600, however, I am tempted to go with a simple, non-programmable thermostat since its a heat pump. I was looking at the Honeywell RTH3100C at Home Depot, however, I don't see a setting for "Auto" to switch between heating and cooling during Spring or Fall.

My Heatpump specs are:
Inside unit: BDP, model #517EN042 (or #517EN842)
Outside unit: Carrier "Day & Night", Model #517EN842

I also run a Honeywell HE265 humidifier.

Any suggestions would be appreciated.
 
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Old 11-06-10, 12:30 PM
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I'll let the Pro's answer most of this...but most cheaper stats don't have the Auto switching from heat to cool.

I have a 7400 which works great and keeps the house exactly where I want it...but no Auto switching...which this time of year would be nice. 80+ and sunny during the day...mid 40's at night. Maybe I should teach "She Who Gets Hot and Cold" how to set it?
 
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Old 11-06-10, 09:20 PM
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The RTH3100 will work and I'd suggest that for HP system since it's best to "Set it and forget it.".
 
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Old 11-07-10, 07:17 AM
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OK, thanks for the advice. I may try my original thermostat again as I replaced it after it didn't respond once. Since I've had the Ritetemp do that multiple times, it may be a bad relay on the heat exchanger. If that doesn't work then I'll go with the RTH3100. I go with it first, but I prefer one with an Auto setting.

I thought I would like the programmable version to tailor it to my "she who gets hot and cold" but it's easier to let her change it herself then for me to start reconfiguring the menus.

Now if I could only teach her that turning it all the way up or down does not make it heat/cool faster...
 
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Old 11-07-10, 07:32 AM
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Most pros prefer Honeywell thermostats over ritetemp, lux, and hunter.

Gunguy, you should have option 300 available with the RTH7400.
 
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Old 11-07-10, 07:53 AM
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Houston...
Might be on the newer ones, mine is about 3 yrs old. Even says in the basic user manual "7500 only" for the auto changeover. Though in the install manual it doesn't...just says "see User Manual for details".
 
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Old 11-07-10, 07:58 AM
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You are right, I remember that now.
 
 

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