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Fig. 1: Don’t forget air handler filters — and make a notation when the filter was changed. How does that saying go — “Out of sight, out of mind!” Don’t let summer go by without changing out your air ...

Air conditioning can feel like magic on a hot day. An HVAC instructor at Northern Virginia Community College explains how it works.

Measuring total external static pressure (TESP) on an air handler can be confusing. It’s even worse when you’re the one who is adding to the confusion. A recent email from Judy Rachel, with Home ...