Welcome to
GARN® Wood Heating Systems
Home of the World Famous GARN® WHS Wood Fired Hydronic Heater
For over 30 years Dectra Corporation has been providing quality products and services for residential, commercial and small industrial buildings and facilities.
The World Famous GARN® line of Wood Heating Systems (WHS), have been an integral part of developing wood as a viable, clean, and effective renewable, carbon neutral heating source.
We are very proud of our products, services, people, and partners.
In addition to information on GARN® products and services, our goal is to educate and advance the intelligent use of wood and other alternative heating sources. We will be constantly updating the information and resources on this site, so please check back
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Introducing GARNparts.com, our new online store for ordering replacement parts for your GARN® unit. You can also get an ever growing selection of GARN® Wear - hats, vests, and more to come.
Best Regards,
The Entire Team at Dectra Corporation
What's New
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The duct you are referring to provides make-up air into the room to prevent smoke from entering the room when the GARN door is open for a re-firiing. It is set up with a low external opening and a high internal opening in order to provide a thermal trap to minimize air flow when the GARN door is closed.
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[quote user="BCBall"] We currently have cast iron radiators in the basement and on the first floor. I am looking at putting fin type on the second floor and some more cast iron rads in the attached garage. [/quote] Fin Tube do not work that well with wood as they are usually sized for relatively hot water. 30 btus a sq ft is also normal for...
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Sizing a heating system without heat loss calculations is simply guess work. There are however some formula's for guessing and they vary from region and construction (energy) quality. I will give you an example of one way to estimate based on average construction in central Minnesota where design temperature is -19 degrees F. You have roughly 2500...
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With the GARN you get a galvanized reducer and hood for the combustion air intake. Could one use black stove pipe in-between to extend the intake to outside the building or would there be a problem with dissimilar metals? Or should I limit my extension to galvanized pipe? I am assuming dissimilar metals is only a problem when water is involved.
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I hear you - and not a great idea where I am to. I was going to have access to the top through one of the gable ends. This enables me to close and easily insulate above the work area with no access hatch necessary through the insulation. I guess I am not understanding the real purpose of this vent. Why would it show being above the unit if the air is...