Boiler Basics: Part I - Combustion Air and Drafting

WxTV's master plumber Mike Campbell is back at it again, this time giving us the low-down on boiler systems. In Part 1 of this series, we'll see how he tests for, and proposes to resolve, a backdrafting problem.
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Видео Boiler Basics: Part I - Combustion Air and Drafting канала TheWXTV