When Santa Rosa's summer heat arrives, a functional air conditioning system goes from a luxury to a necessity. Whether your AC is blowing warm air, making unusual noises, or simply not keeping up with the heat, Hahn Automotive's technicians have the equipment and expertise to restore full cooling performance.
We perform complete AC system diagnostics and service including refrigerant recharge, leak detection and repair, compressor replacement, condenser and evaporator service, expansion valve repair, and cabin air filter replacement.
Unlike some shops that simply recharge refrigerant without finding the leak, we locate and fix the underlying problem — ensuring your AC stays cold for more than one season.
Signs You Need AC Repair
Our Process
System Pressure Test
We check refrigerant levels and system pressures to determine if a recharge or leak repair is needed.
Leak Detection
Using UV dye or electronic leak detectors, we locate any refrigerant leaks before recharging the system.
Component Inspection
We inspect the compressor, condenser, evaporator, expansion valve, and all AC lines for wear or damage.
Repair & Recharge
After completing any necessary repairs, we evacuate and recharge the system to manufacturer specifications and verify cooling performance.
Why Choose Hahn Automotive?
Find the Leak First
We locate and repair leaks before recharging. A recharge without leak repair just delays the problem.
Complete System Service
We service every component of the AC system, not just the refrigerant level.
Ready for Sonoma Summers
We understand how hot Santa Rosa summers get. We make sure your AC is ready to perform when you need it most.
Certified Refrigerant Handling
Our technicians are certified in proper refrigerant handling and recovery — protecting both you and the environment.