HIGH-EFFICIENCY, GASIFICATION WOOD BOILER AND THERMAL STORAGE IN ONE UNIT

GARN is the only heating system that can save you money by using: wood, thermal solar, and off-peak electric - individually, or all-together. A complete, all-in-one renewable heating system for your business or home.

TECHNOLOGY

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Learn about the GARN Wood Heating System:
  • Combustion design and heat exchange
  • Thermal storage
  • Operation
  • Connections and pieces

Articles and News

We have recently updated our phone system. Note that all prior extensions have been consolidated under our existing main number at 612-326-1100. Or contact us at martin.lunde@dectra.net.

DOWNLOAD MANUALS

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The GARN Owner’s Manual:

everything you need to know to install and maintain your GARN Wood Heating System.

WHS 1000/1500/2000 Manual
WHS 3200 Manual

The GARN System Design Manual:

learn how to design your hydronic system, connect to an existing pressurized system, and plumb your GARN correctly.

System Design Manual

The Electric Heating Manual (updated as of June 10, 2019):

learn how to wire and interface the GARN Electric Heating Package with your GARN thermal storage.  Perfect for taking advantage of low-cost off-peak rates:

Electric Heating Manual

More info:

SIZING AND SELECTION

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Which GARN® WHS Model Best Fits Your Application?
  • Find out by using our Sizing Calculator.
  • You’ll need one of your monthly heating bills handy.

More info:

GARN® EMISSIONS & EFFICIENCY DATA

The test results above are certified by an independent lab using the ASTM 2816 Appendix 1 test method (for units with full thermal storage), market available cordwood fuel, and production equipment.

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