[Editor’s note: When we last visited with lead installer John and his helper Charlie (The NEWS, March 5, 2007), they had just learned the hard way that there’s a lot more to sealing ducts than just ...
Diagnosing airflow problems in an HVAC system can be a frustrating and intimidating task. When airflow problems arise without a defined troubleshooting approach, you’ll likely end up guessing at the ...
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