Subscribe to our YouTube Channel: https://www.youtube.com/c/internachi?... Follow along with Certified Professional Inspector® Lon Henderson as he provides tips on inspecting natural draft, mid, and high efficiency furnaces.
For more inspection videos visit https://www.nachi.org/tv/
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Table of Contents
Natural Draft Unit 1:22
Mid-Efficiency Unit 6:04
High-Efficiency Unit 12:35
Utility Room 22:10
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