Matthew Akins

This technical primer breaks down defrost control board operation, key components, and practical troubleshooting steps every HVACR technician should know. 

Learn how ohmmeter checks and hopscotching can save HVAC techs from costly misdiagnoses. 

A blown fuse or tripped breaker may point to deeper problems — here’s how to trace the issue before swapping parts and burning time.

When a homeowner complains their house feels “hot and sticky” even at 68°F, the problem often isn’t the part you’re about to replace — it’s a missing Manual J calculation. 

Heat pump not performing? Before swapping parts, here’s how to use simple techniques — like the touch test — to confirm a reversing valve issue.