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Old 06-11-2022, 03:57 PM   #1
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Replacing stock Suburban thermostat

I must admit I haven't done a thorough search on this topic, so it may have been done by one or more others. I personally hate old analog thermostats, and I see the 166FBS I'm getting has one. It has been 15 years since the last time I had a Suburban where the thermostat wasn't integrated with a digital for the cooling. At that time I replaced with a Hunter 42999b at Walmart for about 12 bucks. Today that product appears to have become the Supco 43054 available at Amazon for $34 https://www.amazon.com/dp/B004OM5R9O

Suburban's use a simple on/off design with two wires. Units like the one referenced above have 2 AA batteries (about one year of life) to power the display, and while they have fan and cooling operations only heat is used in this application.

They have a "span" of 2 degrees from the factory, so for example setting 70 the heater will come on at 69 and go off at 71. They can be set to two other spans if desired, 1 degree (frequent cycling) and 3 degrees (less frequent cycling).

Image below is of a Hunter I installed in 2013 on a coach which had analog thermostats for a baseboard heater.
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Old 06-14-2022, 09:06 PM   #2
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As I said, I hadn't done a thorough search, but I'm reading everything I can get my hands on and I found at least 3 other posts mentioning digital thermostat replacements for the heater. Of them, I like this one the best. Really simple, don't have to open a door to turn it on/off, etc. Doesn't appear to have an adjustable span, but I used to always leave on the standard +-1 degree which is true for this one as well.
https://www.amazon.com/dp/B00204WWGE
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Past: 2015 Winnebago View, 2004 Blue Bird M380, 1990 Blue Bird WB40, 2003 Safari Zanzibar, 1998 Safari Sahara

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Old 06-14-2022, 10:19 PM   #3
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Honeywell TH1100DV1000 Pro-Digital 2-Wire Heat Only

I replaced my stock thermostat with the Honeywell TH1100DV1000 Pro-Digital 2-Wire Heat Only .. purchased on Amazon. Was easy to replace and works great.
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Old 06-15-2022, 09:07 AM   #4
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I did the same as Gary_LHC_Arizona, with the exact same one from Amazon. Works great. Huge improvement.
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Old 06-26-2022, 07:26 PM   #5
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I did the same Honeywell as Gary. And our AC doesn't have temprature settings, it's just a rotary dial. The stat shows us the temp in the camper so we know what ac setting is keeping the cabin at.
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Old 06-27-2022, 12:35 PM   #6
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X2 on the above thermostats
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