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The Honeywell Home CT53K1006 Standard Millivolt Non Programmable Thermostat combines the best elements of accessibility and dependability. Incredibly easy to install, this thermostat features precise temperature controls that's ideal for selecting the most appropriate temperature for your household. This thermostat comes equipped with a quiet switching function, 2 wires and is compatible with 750 milivolt heating systems such as floor fireplaces and wall furnace systems. The CT53K1006/E is a non-programmable option and was designed for heat systems. For additional peace of mind, this model doesn't utilize mercury similar to competing thermostats. This unit's compact design, functionality and accessibility make it a must have for those seeking a non-programmable thermostat that's compatible with heat only systems.
From the Manufacturer
The Honeywell Home CT53K Standard Millivolt is a manual low volt thermostat. It has 2 wires, quiet switching, used with 750 millivolt heating systems and is mercury free.
Bugman
Reviewed in the United States on February 13, 2025
I have a Hearthstone direct vent natural gas heater. This thermostat is listed for millivolt use, but became inconsistent, then unable to start the heater within about two months. I’m told it has to do with bimetallic conductors which corrode quickly, causing the problem. I’m surprised that a Honeywell product would not work properly.
Dan
Reviewed in the United States on September 18, 2024
I am really happy with this product. Easy to install and works great.
DN Rault
Reviewed in Canada on March 4, 2024
This thermostat was super easy to install for use with our gas fireplace - no adjustments, just hook up the 2 wires and go. Works great!
Ally
Reviewed in Canada on December 21, 2024
Normal wall switches do not work well for turning a gas fireplace on and off... This was an easy upgrade that should have been installed with the fireplace.
Nucci
Reviewed in the United States on November 28, 2024
Needed for a client with a 1940's home with a gas burner under the house. This worked perfectly for the 12v two-wire system. Screw holes were an exact fit for the 30 year old model I replaced.
michael johnson
Reviewed in the United States on January 31, 2024
Works just fine with my Williams low tech propane wall heater. Much more accurate than the Williams thermostat that came with the unit. This new one has a wider adjustment gradient which allows for more precise temp setting. Holds room temperature in a narrow 2 degree heat range, this is great for my vacation home where i need to set it at a low temp for when I am not there. This is the millivolt model, which is powered by a thermocouple heated by the pilot light. needs no battery or electricity, great for a vacation home.
Angela
Reviewed in Canada on December 18, 2023
Easy to install, works as it should, a little hard to judge actual temp setting
Customer
Reviewed in Canada on October 21, 2023
Works as expected.
Runnerfromla
Reviewed in the United States on April 1, 2022
This is the only Honeywell thermostat CT53K1006 that works with the 600 millivolt thermocouple on my 1940 floor gas furnace. I had to straighten out the 2 thermocouple wires to hook up gently to this Honeywell thermostat to get my furnace to turn on. Now it works wonderfully. I tried Honeywell CT33A1009 thermostat and Emerson 1E78-140. They both did not work as they require at 750 millivolt to work. This Honeywell CT53K1006 will work with 250 to 750 millivolt thermocouples, which my thermocouple of 600 millivolt falls nicely within this range, and it works. Make sure to remove the corrosion from the ends of the 2 wires of the thermocouple with sandpaper before hooking up these 2 wires to this Honeywell thermostat to ensure good electrical contact.
memories
Reviewed in the United States on May 10, 2021
Essential for us. We needed thermostats which shut off because the ones originally installed for our Jotul gas heaters (750 milliliter) kept coming on when the temperature became 50 degrees or lower. They were installed in rooms we didn’t want heated all the time. These have been perfect, and are a big relief. At night, I turned on a light I placed near the original thermostat on one of the heaters. This worked, but was ridiculously annoying. Of course these with an off and on work like the original Honeywell modulating the heat when turned on.
Frank YYZ
Reviewed in Canada on October 18, 2021
I wanted to like this thermostat. It's reasonably pretty and the ON-OFF switch is a handy feature. But it couldn't control my millivolt gas fireplace reliably. The thermostat would switch ON and OFF with changing temperature, but the fireplace would only light occasionally when the thermostat called for heat. I measured my thermopile open circuit voltage as 479 mV. When the thermostat was supposedly closed and asking for heat, the voltage across the thermostat terminals was 300 mV! (A properly closed switch should have almost zero mV across it.) The voltage drop seemed to be split between the ON-OFF switch and the thermostat switch. And the voltage drop varied all over the place if one jiggled the ON-OFF switch or put any stress at all on the back plate. Not acceptable for a "millivolt" rated thermostat. Or any thermostat, for that matter.Another annoying thing is how loud this unit is when it switches off. No big deal if it's in a living room or some such, but when it's in a quiet bedroom, the "sproing" sound when it opened was enough to wake one up.Sent mine back and will try something else.
@direct.impingement
Reviewed in the United States on January 13, 2014
Our house was built in ~1940's and has a large gravity heat type furnace. The aging ITT t-stat was starting to malfunction so I picked this up as a replacement. Simple two wire install and it has a on/off switch which is nice because you can lever the temp set but manually control the heater. A word of caution - while installing mine I dropped the face plate/cover which contains the ambient temp indicator. I think I knocked it out of calibration! Not a big deal as we usually set the heat by "feel" but I'm always curious as to the temperature inside the house. According to my wife "its always freezing" which means 23 F or 0 C! Put on a sweater...
Lorin Yeaton
Reviewed in the United States on February 10, 2012
Since this is the only product of its kind that I've used, it's difficult to confidently assert any opinion about it because I have nothing to compare it to-- hence the wishy-washy middle of the road rating. Having said that, I'll share that the thermostat did not meet my expectations. I'm just not sure my expectations are reasonable. In replacing a simple on off switch on a gas fireplace, I was hoping to prevent the too hot/too cold cycle that results from my laziness (not wanting to jump up and turn the switch on and off frequently) as well as the wasted money from the occasional forgetting to turn off the fireplace at night. Unfortunately I've found that thermostat does not seem to be very sensitive and rather than turning it off and on within a reasonable temperature range, it stays on (and off) much longer than I would like. If there is a way to adjust the offset, I am unaware of it and do not see it in the instructions. The device is installed only about 3 feet from the fireplace, but it is on an outside wall, which could have something to do with the lack of sensitivity. Because it stays OFF longer than expected also, it's easy to trundle off to bed without realizing it's on....discovered only the next morning upon coming downstairs to a much too warm family room. There goes the savings! The responsibility, of course, remains mine...but so much for my plan!
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