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Economy Non-Programmable Thermostat
The Honeywell CT33A1009 Millivolt Heat Only Thermostat is a non-programmable option that features low voltage controls and a convenient snap-action switch for millivolt systems such as fireplaces and floor or wall furnace systems. Incredibly easy to install, this manual thermostat includes mounting hardware and wall plated positions that make it extremely versatile for any number of positions. This Honeywell non-programmable thermostat is mercury free and designed specifically with the consumer in mind. Devoid of any traces of mercury and relatively simple to install, this non-programmable thermostat is easily read and even easier to adjust.
The Honeywell CT33A Thermostat is compatible with 750 mV heating only systems - forced air (gas, oil & electric) and hot water/steam.
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Average score based on 14 reviews
- Reviewed: 11/03/2021 by John M
It came in the mail in a timely manner and easy to install. Thanks.
- Reviewed: 10/18/2021 by JClyde E
ct33a 750 millivolt
I really like these simple to use non complicated thermostats. I would like them even better if they did not have an off position for millivolt use.
- Reviewed: 03/26/2021 by JClyde E
ct33a 750 millivolt
i love this thermostat because it does not have a heat anticipater. easy to install simple to operate.
- Reviewed: 02/12/2021 by Thomas Boniface
Exactly what one would expect from Honeywell. Solid, sturdy, perfectly functional, with simple instructions.
- Reviewed: 10/26/2020 by steven magill
Keep it Simple
I needed a non-programmable heat only thermostat for a propane direct vent wall heater in a mountain cabin. Easy to hook up with just two wires and works fine.
- Reviewed: 07/25/2020 by Bryant Floyd
No more replacing batteries every again. Installation was a breeze. It is very simple to use.
- Reviewed: 01/02/2020 by Sal Pacifico
works very well, and was used to replace a multipurpose thermostat that would not turn on gas fireplace
- Reviewed: 11/27/2019 by buster sontag
Happy Home Owner
Soooooo glad to get the correct part for my ancient floor furnace. Everyone , box store Pros swore the 24V to millivolt would work. I researched what I needed on the Honeywell site, had it shipped to my home, installed it and we have a happy Warm house again. Thanks Honeywell !
- Reviewed: 11/25/2018 by James ONeill
Used with Natural Gas Stove
Perfect product for my Natural Gas Stove. Replaced the original on/off wall switch with this unit. Nice appearance, simple installation and appreciated the large back plate to keep the wall clean.
- Reviewed: 11/21/2018 by doris kubinski
Very good and easy to install