HeatFast HF125K 125,000 BTU Forced Air Kerosene Heater with Thermostat

Stay Warm Anywhere with the HeatFast HF125K 125,000 BTU Forced Air Kerosene Heater by Ashley Hearth – Powerful Heat, Smart Features!

Product Description

Experience reliable and powerful heating with the HeatFast HF125K Forced Air Kerosene Heater. Perfect for your jobsite, barn, or any space up to 3,125 sq. feet. Tested for extreme conditions, this heater ensures you stay warm even in sub-zero temperatures.

Product Features

CSA Certified for safety
Convenient thermostat control with LED Readout
Multiple Fuel Options: K-1 Kerosene, Diesel, Heating Oil, Jet-A, JP-8
Rugged and tested to perform at -20°C
Easy assembly with 5-minute setup

Product Specifications

Assembled Width: 35.2 in
Assembled Depth: 21.5 in
Assembled Height: 26.4 in
Package Weight: 53.8 lbs
Package Width: 38.8 in
Package Depth: 15 in
Package Height: 22 in

Installation Options

refer to manual

Fuel Types


Fuel Type Application

K-1 Kerosene, Diesel, Heating Oil, Jet-A, JP-8

Clearances and Cavity Measurements

refer to manual


1 Year Manufacturer’s Limited Warranty

Product Highlights

The HeatFast HF125K boasts 125,000 BTUs of heating power, ensuring warmth in areas up to 3,125 sq. feet. With a 10.6-gallon fuel tank, it can operate for up to 11 hours, making it perfect for extended use. The thermostat control with LED readout provides easy temperature management, while its rugged design has been tested to perform at -20°C, ensuring reliability in harsh conditions. CSA Certified for safety, this heater offers versatile fuel options, including K-1 Kerosene, Diesel, Heating Oil, Jet-A, and JP-8.

Company Overview for Manufacturer

Ashley Hearth designs and engineers high-quality heating products. With a commitment to quality, affordability, and value, Ashley Hearth brings warmth to homes since 1869. Their global brand ensures products are meticulously crafted, utilizing components sourced both domestically and globally for assembly in various facilities worldwide.


Q: What is the heating capacity of the HeatFast HF125K?
A: The HeatFast HF125K provides a powerful 125,000 BTUs, heating up to 3,125 sq. feet.

Q: Can I use gasoline as a fuel for this heater?
A: No, the HeatFast HF125K is not designed to use gasoline. It is compatible with K-1 Kerosene, Diesel, Heating Oil, Jet-A, and JP-8.

Q: How long can the heater operate on a full tank of fuel?
A: The heater can operate for up to 11 hours on a full 10.6-gallon fuel tank.

Q: Is the HeatFast HF125K suitable for use in extremely cold conditions?
A: Yes, the heater is factory-tested to perform at -20°C, ensuring reliable operation in sub-zero temperatures.

Q: What safety certifications does the HeatFast HF125K have?
A: The heater is CSA Certified for safety.

Q: How easy is the assembly process?
A: Assembly is quick and easy, taking only 5 minutes with the attachment of 6 screws (included) to mount the wheel kit.

Q: Can I control the temperature with the thermostat?
A: Yes, the heater features a convenient thermostat heat control with an LED readout for easy temperature management.

Q: What warranty does the HeatFast HF125K come with?
A: The heater comes with a 1 Year Manufacturer’s Limited Warranty.

Q: Is the HeatFast HF125K suitable for both residential and commercial use?
A: Yes, it is suitable for various applications, including jobsites, barns, and other spaces.