About HVAC Lens

HVAC Lens is a practical guide to residential heating and cooling. We focus on the decisions homeowners actually face: when a filter needs replacing, what short cycling usually means, why some systems feel clammy, and how to ask better questions before approving work.

The goal is not to turn every reader into a technician. It is to make the next maintenance call, estimate, or comfort complaint easier to understand. Articles here are general information, not contractor advice.