Last updated: February 22, 2026

Mr. Heater Flame Sensor Kit: Does This Fix Your Kerosene Heater in 2026?

Name: Mr. Heater Flame Sensor Kit for All Kerosene Forced Air Heaters
Brand: Mr. Heater
SKU: B005R21U78
Price: 12.98 USD
Availability: InStock
Rating: 4.6 (365 reviews)

This $12.98 sensor kit keeps your Mr. Heater kerosene forced air heater running. It fits 2003 and newer models across four major brands.

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Best For

How this product scores for different use cases

Our Verdict

This is a replacement flame sensor kit, not a space heater. It restores your Mr. Heater kerosene forced air unit when the sensor fails.

The part fits heaters from 50,000 to 175,000 BTU. That covers small garages up to large commercial workshops.

At $12.98, you spend very little to fix a heater that costs $200 to $500 new. The savings are significant.

The kit also fits Heatstar, All Pro, and Universal branded heaters from 2003 forward. One affordable part covers many compatible models.

Kerosene forced air heaters need open ventilation to operate safely. Use them only in garages, workshops, or outdoor spaces.

47 Overall Score

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What We Like

Fits Mr. Heater models MH50KT, MH75KT, MH125KT, and MH175KT, covering a wide power range.
At $12.98, this part costs a fraction of the price of replacing an entire kerosene heater.
Works across four brands: Mr. Heater, Heatstar, All Pro, and Universal forced air lines.
Covers all 2003 and newer models from compatible brands, giving broad repair coverage.
Weighs just 0.1 lbs, making it simple to handle and install during maintenance.

What Could Be Better

This is a replacement part only. You must already own a compatible kerosene forced air heater.
Compatible kerosene heaters have no tip-over protection, unlike most modern electric space heaters.
No overheat shutoff is available on the supported heaters, a standard safety feature in electric models.
No thermostat or timer is included in this sensor kit.
Only fits 2003 and newer models. Older heaters and all propane or electric models are not supported.

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Standout Features

Cross-brand compatibility across four product lines

Most replacement parts fit one brand only. This single kit covers Mr. Heater, Heatstar, All Pro, and Universal forced air heaters.

$12.98 price for a critical heater repair component

Compatible heaters sell for $200 to $500 or more. This part restores full function at under 7% of replacement cost.

Compatible with heaters up to 175,000 BTU output

175,000 BTU is nearly six times the 30,000 BTU threshold for excellent garage and workshop heating performance.

Full Specifications

Additional Info

Assembly

Frequently Asked Questions

Common questions about Mr. Heater Flame Sensor Kit for All Kerosene Forced Air Heaters

What heaters does this flame sensor kit fit?

It fits Mr. Heater models MH50KT, MH75KT, MH125KT, and MH175KT. It also works with Heatstar HS50KT through HS175KT, All Pro SPC-K50 through SPC-K150, and Universal K50-FA through K150-FA models from 2003 forward.

Is this a complete heater or just a repair part?

This is a replacement sensor kit only. You need a compatible kerosene forced air heater already in your possession. This part helps restore your heater when the flame sensor stops working.

What fuel type do the compatible heaters use?

The compatible heaters run on kerosene. This sensor kit is made for kerosene forced air heaters only. It does not fit propane or electric heater models.

Can I use these kerosene heaters indoors?

Kerosene forced air heaters require proper ventilation to run safely. They work best in garages, workshops, and open outdoor areas. Do not use them in bedrooms, living rooms, or any closed indoor space.

Does this kit work on heaters made before 2003?

No. The manufacturer specifies compatibility with 2003 models through current production only. Older heaters from these brands are not listed as supported.