You can’t completely prevent callbacks in the HVAC field. You can reduce callbacks though. One way to do this is to have a checklist. Here’s a list that I used to have to input into my laptop when I was in the field. This is just a sample.
Sample HVAC checklist to be performed during preventative maintenance
- Drain Lines free flowing?
- Indoor coil clean?
- Air filter changed/cleaned?
- Check all Disconnects to Furnace/Air Handler
- TXV Bulb secure and Insulated (if applicable)
Static Supply Pressure: actual – nameplate total
Static Return Pressure: actual – nameplate total
Blower motor amps: actual – Nameplate rated
Power to the furnace, air handler?
Type of Refrigerant:
Refrigerant Caps put back On?
Compressor amps: actual – nameplate rated
Condenser fan motor amps: actual – nameplate rated
Voltage at Contactor:
Voltage at Capacitor:
Run Capacitor Microfarads (Start Winding Amps x 2,652 ÷ capacitor voltage) :
- Brush wires – zip tie as needed
- Outdoor coil washed?
- Power to the Condenser
Notes: lineset underground, condensing unit on uneven ground, etc…