the electric heat failing to engage after a call from the thermostat

As a Permanent Split Capacitor (PSC) unit

Common Questions Is the KSATX0501PUR compatible with R-22 systems

Look for signs of water staining or white "crusty" deposits (calcification) around the edges of the plastic collector box or underlying components

Tjernlund Products 950-0017 Impeller R-407A the electric heat failing toThe Tjernlund Products 950 0017 Impeller is a precision engineered stainless steel centrifugal fan blade designed specifically for SS2 and SS2G side wall vent systems. In high demand mechanical venting applications, the SS2 blower wheel replacement must withstand corrosive flue gases and high thermal loads. This genuine OEM Tjernlund part is factory balanced to eliminate shaft vibration, protecting the motor bearings and ensuring whisper quiet