Wood Burning Furnace Model HE-1100
The HE-1100 furnace is designed to heat one building similar to an average or larger sized home. Our Model HE-1100 furnace is designed to heat one building similar to an average or larger sized home. You will enjoy putting money in the bank, instead of paying huge heating bills!
Hawken HE-1100 Spec Sheet
Wood Burning Furnace Model HE-2100
The HE-2100 Wood Burning Furnace is designed to heat two buildings up to 10,000 square feet. Our Model HE-2100 furnace is designed to heat any two buildings with a total of up to 10,000 square feet. You will be able to turn UP your thermostat, stay warm and save money all winter!
Hawken HE-2100 Spec Sheet
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How Outdoor Wood Burning Furnaces Work
In summary, wood is burned in a firebox that is completely surrounded by a chamber of water called the “water jacket”. As the fire burns, the water is heated. Once the water is heated to 180 degrees F, a blower fan that is feeding air to the fire is automatically turned off and the damper is closed. This starves the fire of oxygen and saves wood.
Fortunately, wood is a natural and renewable fuel that has been used since the beginning of time. Without oxygen, the wood will smolder until the water drops to 160 degrees at which temperature the blower fan automatically turns on again. Therefore, the water in the water jacket is constantly maintained between 160 and 180 degrees Fahrenheit without any effort on your part. All you do is add wood when needed. Many homes only require that you add wood one time a day.
The heated water in the water jacket is continuously pumped to your home or building 24 hours per day. The water is pumped through well-insulated pipes which are buried about two feet underground between the outdoor furnace and your building. The water is pumped in a continuous loop - from the outdoor furnace through the underground pipe to the house where heat is exchanged, and then back to the furnace. See Illustration to the right which shows water being pumped from the back of the furnace through insulated pipe to one building. Additional pumps can be added to provide heat to other buildings.
Use With Hot Water Systems
Indoor boilers that provide heat through baseboards are simple to hook into. We provide a water-to-water heat exchanger that looks like a large brick. The water from the outdoor furnace flows through one side of the heat exchanger and the water from the indoor boiler flows through the other side. See Illustration to the right. Although the water does not mix, heat is transferred from the outdoor system to the indoor one. It is important that the water does not mix since the outdoor system is not pressurized and the indoor boiler is pressurized - and must not be depressurized. This water-to-water heat exchanger very easily transfers the heat to your home while keeping your entire system safe.