Downloadable Material:

Liberator Generation 2 User Manual

Sales Flyer

19-483 RMH-2 Non-CBI Certification Report

Certificate of Conformity




Guardian Fire Testing Safety Test Certificate

Guardian Fire Testing Laboratories Agreement

Guardian Fire Testing Product Certification


What are the dimensions of the heater? 

The Liberator Mass Heater measures 16" long x 24" wide x 36" tall (no pellet hopper) and 16" long x 24" wide x 44" tall (with pellet hopper).

How much does the heater weigh?

The heater weighs 165 pounds without the pellet hopper. The pellet hopper and outside air intake adapter together weigh 36 pounds. When crated the heater with all accessories weighs 300 pounds.

Can this heater be coupled to or integrated with thermal mass?

In theory, yes. But doing so is an unconventional installation method, so please check first with your local building codes, insurance provider, and be sure to consult an expert and abide by NRTL and NFPA guidelines. We also recommend contacting your local fire marshal. And remember, be sure to use common sense. We are not liable for any damages.

How big of a home can this heater keep warm? (This applies to all structures.)

The size of a house/structure a Liberator Rocket Heater can heat varies and is determined by a plethora of factors. How cold is it in the winter? The geographic location, a house in Alaska will require more heat than an identical house in Arizona. How well insulated is your house? Do you use south-facing walls and windows to absorb sunlight and heat during the day? How tall are your ceilings? Is it a two-story house? What's your average wind speed and wind chill factor in your area? Are there trees around your house to act as windbreaks? I can’t really answer this question with a degree of fine accuracy. This is something that will have to be determined by your own unique specific needs, considerations, and variables. However, I can speak from personal experience. We heat an 1800 square foot pole barn with 12-foot ceilings. When it's in the single digits outside, the barn usually stays about 68 degrees F.

I live in Canada and would like to buy your heater. Do you ship to Canada?

Yes! In addition to being listed as UL-1482 we are also listed as ULC-S627 which is the Canadian safety standard. Please contact us for shipping details.

How long will this heater run without refueling it?

Anywhere from 30 minutes to an hour and a half on wood, depending on fuel usage and what type and size of wood are used. With burning pellets, the heater can run 12 to 16 hours.

I have an existing fireplace chimney I would like to have the heater installed to. Can I hook up the heater to my chimney?

Yes, you can. We recommend using a flue liner. Be sure to read and abide by the Owner's Manual and follow all building codes.

How many BTU’s is this heater rated?

A wood stove BTU rating is a measurement of fuel consumption, not heat output into your home/structure/building. Most wood stoves waste a large portion of their flue/chimney. Our heater, due to its large volume heat exchanger, exhausting from the bottom of the exchanger and therefore only venting the coolest gases and trapping the hotter gases at the top, and high surface area to radiate heat via emissivity maximizes thermodynamic heat transfer into your home.

Can I cook on this heater?

Yes, absolutely. The top plate is designed to double as a hot plate for cooking.

How long will this heater last?

We’ve seen only light surface oxidation on our earliest prototypes which are now approaching half a decade old. The heater is designed so that over-firing is very difficult to do. Over-firing, not use or age, is what causes burn-out and burn-through.

Can I heat water with this heater?

Place a pot of water atop the heater. It will boil quite nicely.

How often do I need to clean out the heater?
About once a day. Simply place a metal pan such as a steel pie tray or some other similar container underneath the ash clean-out door. Then remove the ash clean-out door and use the provided ash clean-out tool to pull the ashes out of the heater. Clean-out takes less than 20 seconds.

Do you have other sizes available?

Not yet. We might in the future.

What about children and pets?

This is a wood stove. As with all wood stoves, it does get very hot. Show care when children and pets are around the stove.

Is this an outdoor stove?

No, it is not.

Can I hook up your heater to my air ducts/central air system?

The Liberator is not meant to be integrated into ducting or forced air systems. It's designed to be a standalone radiant heater. You can still disperse air throughout your house with fans.

Can I burn plastic in this heater?

According to the EPA, no.

What about foam? Can I burn foam?

No, petroleum products should not be burned in any woodstove!

Can I build a wall between the feed tube and heat exchanger so I can heat one room and fuel it from another?

Can I replace that aluminum ball knob on the feed tube lid with the hood ornament from a car?

Sure. You go for it! Just make sure it's not made of plastic.