What A Maintenance Visit Actually Covers
A tune-up is not a look and a wipe. Here is what a technician is checking, and why each item matters.
Maintenance sounds like the easiest thing in the world to skip, because a system that is running seems like a system that is fine. What a seasonal visit really buys you is the difference between a part being replaced on a Tuesday morning and the same part failing on the first hundred degree weekend.
What gets measured
- Refrigerant charge, which is the single biggest driver of cooling capacity
- Temperature split across the coil, the number that says whether the system is doing its job
- Electrical draw on the compressor and blower, which rises before a motor fails
- Capacitor health, one of the most common causes of a no cool call
What gets cleaned
A condenser coil packed with dust and cottonwood cannot release heat, so the system runs longer and hotter to do the same work. Cleaning it is not cosmetic. Neither is clearing the condensate drain, which is what stops water finding your ceiling.
What gets looked at
Duct connections, the state of the insulation, the condition of the pad, whether the unit is level, whether anything is rubbing. Small things that become expensive things.
Why the timing matters
Cooling maintenance belongs in spring and heating maintenance belongs in autumn, before the season loads the system. A weak part will usually pass on a mild day and fail under load, which is exactly why the visit happens before the load arrives.
Want somebody to take a look?
Copper State Cooling, Heating & Plumbing covers this every week in Phoenix.