AC Blowing Hot Air — What's Wrong and How We Fix It
An AC that blows warm or hot air is working against you in Lancaster County's summer heat. This needs fast attention — both for your comfort and to prevent additional system damage. Lancaster AC Repair Pro provides same-day diagnosis and repair for hot air problems throughout Lancaster County.
Why Is My AC Blowing Hot Air?
- Thermostat set to HEAT — Check this first. Simple setting error is the easiest fix.
- Low refrigerant — Without adequate refrigerant, the system cannot cool air before blowing it.
- Compressor failure — Non-functioning compressor means no refrigerant circulation, no cooling.
- Dirty condenser coils — Heavily soiled outdoor coils can't release heat; refrigerant returns too warm.
- Refrigerant overcharge — Too much refrigerant also causes warm air and can damage the compressor.
- Reversing valve failure (heat pumps) — Stuck valve causes heating mode in summer.
- Ductwork leaks near hot attic — Hot unconditioned air mixing into supply.
Call (717) 483-1673. Do not run a system that may have low refrigerant — compressor damage can result from extended operation.