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Blog Title: What is sealed combustion furnace?
What is sealed combustion furnace?
Category: Portable Air Conditioner Repair Post By: Diane Evans (Ann Arbor, MI), 09/23/2016

These units are completely sealed from the interior environment of the house. They have two pipes that connected to the exteriors. On bring in outside air for combustion and the other takes out the exhaust gases. These two pipes are usually combined as a single concentric pipe.

- Richard King (Plano, TX), 09/29/2016
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