Wood Boiler Ratings part 6, Reviews of the Hawken Energy, Heatmaster, Heatmor, Heatsource 1, Heiss Heater, Herz, Holzmaster, Hoss, and Hoval brands

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HAWKEN ENERGY------NA--------<1*

This brand is available in the United States. The GX10 units are EPA phase 2 qualified for clean burning. They feature R-30 insulation to minimize heat loss but the warranty is not as good as other brands. hawkenenergy.com


This brand is from STEELTECH INC and is made in Canada. They offer three ranges of units based on their efficiency. The G SERIES units can be installed either indoors or outdoors and uses wood gasification technology for clean burning. All of the units are made of durable stainless steel and are backed by a very good warranty. heatmasterss.com


The X SERIES offers two sizes of EPA phase 2 qualified furnaces. They are made of stainless steel for durability and are also backed by a very good guarantee. heatmor.com

HEATSOURCE 1-----NA---------<1*

This brand is from CVR MANUFACTURING and is available in three sizes. They use electronic control, a thermostatically controlled draft fan, and an auger system for ash removal. They use over/under draft for cleaner burning but the warranty on the firebox is not very good. heatsource1.com

HEISS HEATER------NA---------<1*

The ECOEXTREME 7000 boilers are made with refractory cement to hold the heat better. They use gasification technology for clean burning but the guarantee is not as good as many other brands. heissheaters.com


These boilers are sold in Europe. The FIRESTAR BIOCONTROL units are clean burning and have automatic heat exchanger cleaning. They have two separate heating circuits as well as a dhw circuit. The FIRESTAR LAMBDA models also have a lambda sensor to control the combustion. Their website does not have a stated warranty policy. herz-energie.at

HOLZ MASTER------<1*---------NA

This brand is from HKS LAZAR and features clean burning boilers with electronic controls. They are made of ceramics and stainless steel for durability but the warranty on the heat exchanger is not as good as many other brands. hkslazar.com


This brand is made in the USA and is sold through dealers. The SF models are basic units while the HE are clean burning units. They are backed by a very good warranty. tennesseeoutdoorfurnace.com


The AGROLYT range offers boilers that use three stage combustion for clean and efficient burning of logs. They have electronic controls but their website is not much help. hoval.ch

Other Wood Boiler Brand Ratings

You can continue to browse our alphabetical list of manufacturers but, if you are looking for a specific brand, you can enter its name in the search box at the top of the page.

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