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This is a great working no nonsense purely mechanical, bi-metallic spring thermostat. I had previously purchased the better looking vintage style CT87K, but did not realize that its not for a millivolt system. I have a wall mounted gas heater with no fan this is the thermostat for it. If you look inside there is even a way to do some micro adjustment of the contact parts. I see no reason why this unit will not last forever. My previous sill model had a non-replaceable battery in it and a circuit board. I read that it might last 10 years and then need to be entirely replaced! What a bad design on Honeywell's part! This low end model has none of that nonsense within it!
Verified purchase: Yes | Condition: Pre-owned
The mechanism works off of a temperature sensitive coil spring, just like the choke on an old carburetor. When the setting turns on the heat, the small metal tip of the spring touches a magnet to close the circuit and turns on the heat, very simple, but effective. Good quality, great price.
Verified purchase: Yes | Condition: Pre-owned
Had one before, and needed to replace after 5 years. This kind of thermostat when used in kitchen can get dirty and loose contact. Contacts are not sealed. Could have cleaned but thought best to get a new one. Cost is very reasonable.
Verified purchase: Yes | Condition: New
Easy and simple installation, doesn't need batteries.
Verified purchase: Yes | Condition: New
This is without a doubt the very best Millivolt Heat Only Thermostat. The workmen ship is beyond compare! It is the best value that you will find anywhere. If you're in need of a Millivolt Thermostat this is the one to buy. Other millivolt thermostat have wires in them that break and you will be replacing it in a year or two. Buy this thermostat. It is the best that you will be able to find. Works great, easy to mount, excellent quality, great value.
Verified purchase: No
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