HVAC Technical

Furnace Blower Runs Constantly but No Heat: Thermostat, Board or Motor?

When the furnace blower keeps running and the burners stay off, the blower is usually following orders. How to read the board, find the cause and leave the motor for...

Updated Oct 2026 5 min read

Read now ›

The System Runs but the Blower Doesn't: Working the Split

When the condenser runs and the indoor blower stays dead, the symptom itself narrows the fault. How to split the circuit and land on the cause before ordering a motor.

Updated Aug 2026 3 min read

Read now ›

How to Test an ECM Blower Motor: The Full Diagnostic Sequence

A no-guessing diagnostic order for Genteq ECM blower motors: prove power, prove the command signal, prove the load, and only then condemn the motor. Each verdict ends in a specific...

Updated Aug 2026 5 min read

Read now ›