Simple comparison
ServiceTypical rangeWhen it may be needed
General servicingS$25-S$80/unitRoutine cleaning and basic drain check.
Chemical washS$80-S$180/unitDirty coil or poor airflow not solved by normal servicing.
Chemical overhaulS$150-S$350/unitHeavily clogged unit requiring more dismantling and deep cleaning.
Questions before agreeing
- What parts will be dismantled?
- Can you show why normal servicing is not enough?
- Will the blower wheel and drain pan be cleaned?
- Is there any warranty after the service?
Red flags
- Overhaul recommended immediately for a recently serviced unit.
- No visible inspection before quoting.
- Package pressure: “sign today only”.