Thank you for you inquiry. This thermostat does not require a transformer.
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Thermostat For Mr. Heater Garage Heaters

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- Mr. Heater Thermostat is compatible with the Big Maxx series of Unit Heaters
- Compatible with MH 25/40 High Intensity Radiant Garage Natural Gas/Propane Heater
- No external power source is needed for this thermostat to operate
- With its simple 2 wire system, the thermostat mounts in minutes.
- Low voltage thermostat settings from 35 degree F to 75 degree F
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Description
Key Specs
Reviews
Q & A
Warranty
Compare
Product Summary
What's Included
- (1) Thermostat For Mr. Heater Garage Heaters
Features + Benefits
- Mr. Heater Thermostat is compatible with the Big Maxx series of Unit Heaters
- Compatible with MH 25/40 High Intensity Radiant Garage Natural Gas/Propane Heater
- No external power source is needed for this thermostat to operate
- With its simple 2 wire system, the thermostat mounts in minutes.
- Low voltage thermostat settings from 35 degree F to 75 degree F
- Compatible with both natural gas and propane heaters
Key Specs
| Attribute | Specification |
|---|---|
item# | 173641 |
Brand | Mr. Heater |
Manufacturer's Warranty | 1 year limited warranty |
| Attribute | Specification |
|---|---|
Ship Weight | 0.31 LB |
Included (qty.) | 1 |
Compatible With | Mr. Heater Garage Heaters |
Reviews
Questions & Answers
Questions
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· 16 years ago
Do I need a transformer when installing this product?
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Mr. Heater Product Expert· 12 years ago
Helpful?
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ProductExpert5· 16 years ago
This 24 volt thermostat should hook directly into a garage unit heater and should not need a transformer.
Helpful?
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· 4 months ago
Is this thermostat compatible with standard millivolt heater systems
1 answer-
ProductExpert11· 4 months ago
The thermostat is designed for 24 volt. It can be installed with a millivolt system.
Helpful?
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· 2 years ago
Will this work for 12 volt systems
1 answer-
ProductExpert13· 2 years ago
This thermostat will work on 24 volt systems only.
Helpful?
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· 2 years ago
Does this have fan only.
1 answer-
ProductExpert6· 2 years ago
The thermostat does not have a fan only setting.
Helpful?
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Anonymous· 5 years ago
Is the thermostat a 2 wire?
1 answer-
ProductExpert12· 5 years ago
This thermostat uses a simple 2-wire connection.
Helpful?
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· 5 years ago
Does this unit include wire for thermostat?
1 answer-
ProductExpert31· 5 years ago
Wiring is not included with this thermostat.
Helpful?
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· 5 years ago
is there a way to set the on degree temperature and the off temp. in other words it gets to cold before it turns the heater on again. it will go on at 68 degrees and won't come on until 60degrees. is there a setting internal for that?
1 answer-
ProductExpert6· 5 years ago
There is no way to set the thermostat to come on or go off at a certain temperature.
Helpful?
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· 6 years ago
I have a 40 x 80 building was going to purchase two 27465 Mr. Heaters. Will this thermostat run both heaters or do I need a thermostat for each heater
1 answer-
ProductExpert30· 6 years ago
The Mr. Heater Big Maxx Natural Gas Garage/Workshop Heater is capable of having two units operate off of one thermostat. The manufacturer recommends the thermostat be within 15 feet of the heaters.
Helpful?
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· 12 years ago
There is no "off" switch, how do I keep the unit from coming on when the temperature falls below the lowest setting?
1 answer-
ProductExpert25· 10 years ago
There is an "off" switch on the thermostat. It is recommended to turn the thermostat off when temperature drops below 35 degree by lowering the temperature switch to the lowest point.
Helpful?
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· 14 years ago
Single pole or double pole for Mr.Heater 45k
Is this a single pole application or double? is there a difference in options ie fan control only, etc..
1 answer-
ProductExpert5· 3 years ago
This item is a single pole unit. The difference between a single pole and a double pole thermostat is as follows: a single pole thermostat breaks only one side of the power line to your heater and cannot be turned off while a double pole breaks both sides of the power line. All power to the heater is interrupted and is safeguarded if the item requires any maintenance.
Helpful?
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Warranty
Manufacturer's Warranty
1 year limited warranty
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Specifications
1
1
1
1
Mr. Heater Garage Heaters
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K and CB Baseboard Heaters
K and CB Baseboard Heaters
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Multi
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4.0 x 2.0 x 3.25 in
6.25 x 3.375 x 2.25 in
6.25 x 3.375 x 2.25 in
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1.0000 lb
1.0000 lb
1.0000 lb
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