ADVANCED MOBILE AUTO — A/C & HEATING
Car A/C & Heating Repair in Concord, CA
Comfort systems matter, and so does diagnosing them correctly. We test pressures, airflow, and the heating side to find why your A/C is warm or your cabin won't heat — then explain the options.
Common warning signs
When to have it looked at
- A/C blowing warm or not cooling
- Weak airflow from the vents
- Cabin won't warm up or heats unevenly
- Unusual noises when the A/C runs
- Climate controls not responding correctly
- Refrigerant leak or repeated low charge
What this service involves
A/C & Heating
An A/C that blows warm or a heater that won't warm up can stem from refrigerant level, a compressor, a blend door, or the heating core. We test the system as a whole to identify the real cause.
We measure vent temperatures and system pressures, check for leaks, and inspect the heating side — including the blend door that mixes hot and cold air. Because A/C and heating share climate-control hardware, testing both keeps the diagnosis accurate and avoids recharging a system that has an underlying leak.
How it works
A clear, three-step process
Performance Check
We measure vent temperatures and airflow, then check system pressures against specification.
Leak & Component Test
We identify refrigerant leaks and test the compressor, expansion valve, and blend-door operation.
Restore Comfort
We repair or recharge as needed, then verify consistent vent temperature and airflow before you leave.
Frequently asked questions
Related services
Ready when you are
Request this service
Tell us what's going on with your vehicle and we'll follow up during business hours. The service below is preselected for you.
Prefer to call?
(925) 680-7199ADVANCED MOBILE AUTO
Your car needs attention. We're here to help.
From a warning light to routine maintenance, we'll give you clear answers and quality workmanship.