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  • Easy to install and use.
  • Snap Acting Switch (Magnetic Switch) does not require leveling.
  • Compatible with heat only systems.
  • Bimetal temperature sensor.
  • Economy Model - Simple, worry-free operation.
  • Mounting hardware and wall plate included.
  • Mercury Free.
The Honeywell YCT33A1000 Milivolt 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 and featuring mounting hardware and wall plated options, this unit is extremely versatile and can be placed in any number of positions. The YCT33A1000 is mercury free and designed specifically with the consumer in mind. Devoid of any traces of mercury and relatively simple to install, this model is easily read and even easier to adjust. Honeywell has created the perfect solution for those searching for a highly responsive heat only thermostat that's renowned for its durability and accessibility.
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YCT33A1000 customer reviews

Overall Rating

10 Reviews
10 customers recommend this product
Honeywell YCT33A1000 Millivolt Heat Only Thermostat Reviews
merv carrington
March 23, 2016
Verified Purchase

Fast delivery works great exactly what I was needing would definitely order from Honeywell Store again.

Shep Schoepke
December 10, 2014
Verified Purchase
millivolt thermostat

My serviceman told me about the millivolt thermostat. He was sure it would take care of my problem. I installed it in ten minutes and it hasn't failed on our gas fireplace. Super fix!!!

Jim Fallon
December 2, 2014
Verified Purchase

Item arrived as described in a timely manner.

Peter Modisette
November 21, 2014
Verified Purchase

easy to install easy to use

Paul McMahon
September 23, 2014
Verified Purchase

Needed old fashioned non programmable replacement for micro volt mercury thermostat without constant power applied. Others would not work this one is perfect.

Tamera Iadonisi
January 28, 2014
Verified Purchase

everything was handled very well.

George Cornwell
January 9, 2014
Verified Purchase

Excellent product. Fine service and price.

Tamera Iadonisi
January 4, 2014
Verified Purchase

Everything was great.

Peter Breede
June 16, 2013

This could not be any easier then this to install House was build in 1942 and floor heater upgraded in 1970 but Home Dipot or Loves had no clue of this 2 wire system thank god I found and orderd it here Has worked great for one winter and never faild No Mercury made me ? it but that is technology

Rick Bonin
November 9, 2011
Verified Purchase

Excellent thermostat and great price. They are easy to install and use.

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