Product Line For Sale

Our Freeburn waste oil heater line of products and kits is for sale. We are all of retirement age, and we need to spend more time with our grandkids!

Compared to any other waste oil heater system on the market, we beat them in efficiency, flexibility and affordability. This line is designed for farm shops or similar businesses. They are easy to build and maintain yourself, far more efficient, and cost effective.

The complete line of products is being offered for an outstanding price and value. This includes all parts, patterns and some tooling, instructions, videos, advertising, and literature.

Call us: 800-541-8910 or 509-525-5070

Mama Burn H-8014A


For shop size 1,200 to 2,500 sq ft, depending on insulation and other factors.

Not for indoor residential use.  Because it is a kit, this heater is not UL approved.

Mama is Versatile!

The MamaBurn takes up less than 10 square feet, conserving your valuable floor space. A quiet 1100 CFM squirrel cage blower pushes hot air through 28 heat exchanger tubes and into your shop. The air plenum can be rotated to discharge the heated air in any direction. The heated air comes out close to the floor where you want it, pushed out 15 to 20 feet.

The heat can be easily ducted to another space to be heated (see the Sheet Metal Take Off option) while still heating your shop. Or, place the heater in an enclosed space outside your shop and duct the heat in, saving shop floor space.

There are 4,420 sq inches of heat exchanger surface in this heater, giving you very high heating efficiency. Compare this heating surface area and the cfm of the heat exchanger blower, and you will find they are higher than any other heater on the market.

With double rows of heat exchanger tubes there is little direct radiant heat, making the heater comfortable to work next to in a tight shop. All of the controls are located conveniently at the front of the heater. Adjustments are easy to make while viewing the combustion through the fire inspection hole.

As in our other kits, the combination of fuel control, combustion air control, a hot combustion chamber, and turbulent mix of fuel vapors with combustion air creates very clean burning. There is no filtering required, and a screen assembly for your reservoir helps keep larger material from plugging the suction strainer. You can maintain everything in the kit yourself.

The kit includes:

Burner Control Package (oil pump, combustion air pipe assembly, combustion chamber, fuel tubes, hoses); 28 pre-cut steel heat exchanger tubes, gaskets, and hardware; barrel legs; baffle; 1100 CFM Blower, shroud, and controls; top and bottom air plenums; screen assembly and suction strainer for your oil reservoir; and all hardware, hoses, and tubing needed, plus detailed assembly instructions. 

You supply:

55 gallon barrel, 6” flue pipe, and a reservoir for your used oil (a 30 or 55 gallon barrel works well). The barrel will last a long time because there is no direct flame that hits the barrel.


To start, preheat the combustion chamber with 1/4 to 1/3 cup of kerosene or diesel and wadded up newspaper. This will get it hot enough so the oil will start vaporizing and burn by itself. It will run continuously at the heat output you set with the speed control on the pump. This heater is not thermostatically controlled and is not intended to be run unattended.

How hard is it to assemble?

Your barrel will need the following modifications as instructed in the kit:

1. Drill 28 1.” holes in top and bottom of barrel for heat exchanger tubes (a hole saw is provided).

2. Cut out a flue hole near the top of the barrel.

3. Cut out a square hole in side of barrel for a door.

4. Cut out or drill a 2” hole above the door for viewing the fire.

5. Cut out or drill a 2-3/8” hole in the top of barrel for the combustion air pipe.

The remainder of the assembly is mainly marking and drilling holes for screws and attaching the supplied parts.

No welding is required.

Clear, step-by-step assembly instructions with photos are provided. 8 - 12 hour assembly time.

Also Recommended

Power Outage Control

During a power outage, the pump and blowers will not run, and the fire will go out. However, if you do not turn off the pump, it will come back on when power is restored. Since there is no fire, the oil will fill up the bottom of the heater and run out on the floor. With the Power Outage Control, when there is a power outage the oil and combustion air supplies are turned off until reset.

Stainless Steel Screen Assembly

For on top of a 30 or 55 gallon barrel reservoir to filter out large particles that would plug a 60 mesh suction screen.

Cast Iron Combustion Chamber

Cast Iron Combustion Chamber with Cascade Assembly for Papa Burn, Mama Burn, and the Burner Control.

Sheet Metal Take-Off

Data sheet

Variable Heat:
70,000 Btu to 125,000 Btu
Oil Consumption:
1/2 gal to 7/8 gal per hour
Electrical requirements:
7 Amps, 115 VAC, 60 Hz
Approximate weight:
200 lbs
Heating efficiency:
70 to 75%
Assembled dimensions:
Approx: 32” square x 62” H
MamaBurn (H-8014A) Vertical Used Oil Heater Kit

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