Auto AC Repair Near Me
TL;DR - Quick Answer:
Car AC not blowing cold? We fix compressors, leaks, refrigerant issues, and electrical problems same-day. EPA certified for R-134a and R-1234yf. ASE certified technicians, 30+ years experience, serving all of Sonoma County. Call (707) 584-7727 for immediate service.
Don't suffer through California summer heat with a broken AC. Our expert technicians diagnose and repair all car air conditioning problems quickly, getting you back to cool, comfortable driving.
Why Is My Car AC Not Blowing Cold?
TL;DR: Most AC problems come from refrigerant leaks, compressor failure, or electrical issues. Here are the 6 most common causes we see at our Sonoma County shop.
Low Refrigerant / Leak
The most common AC problem. Refrigerant leaks from hoses, O-rings, or the evaporator reduce cooling capacity significantly.
Failed Compressor
The compressor is the heart of your AC. When it fails, the system can't circulate refrigerant and won't cool at all.
Electrical Issues
Faulty switches, relays, fuses, or wiring can prevent the AC from engaging even if all components are working.
Clogged Condenser
The condenser releases heat from the refrigerant. Debris, dirt, or damage can block airflow and reduce cooling.
Bad Expansion Valve
This valve controls refrigerant flow into the evaporator. When it fails, cooling becomes inconsistent or stops.
Evaporator Problems
Leaks or clogs in the evaporator (inside the dash) can cause weak cooling, bad smells, or water on the floor.
Signs You Need Auto AC Repair
TL;DR: If you notice any of these symptoms, bring your car in for an AC diagnostic. Catching problems early prevents more expensive repairs.
- AC blows warm or hot air instead of cold
- Weak airflow from vents even on high
- AC works intermittently or cycles on and off
- Unusual noises when AC is running (clicking, squealing)
- Musty or mildew smell from vents
- Water pooling on passenger floor (clogged drain)
- AC clutch won't engage (no click when turning on)
- Visible refrigerant leak (oily residue around AC components)
California Summer Heat Warning
Sonoma County summers regularly hit 90-100°F. A broken AC isn't just uncomfortable— it can be dangerous, especially for children, elderly passengers, and pets.
- Interior temperatures can exceed 140°F in parked cars
- AC issues often worsen quickly in hot weather
- Running AC harder strains weak components
- Fix now before summer demand peaks
Auto AC Repair Costs in Sonoma County (2025)
TL;DR: Most AC repairs range from $150-$1,500 depending on the issue. We provide free estimates before any work begins—no surprises.
| Repair Type | Cost Range |
|---|---|
| AC Recharge (R-134a) | $150-250 |
| AC Recharge (R-1234yf) | $200-350 |
| Refrigerant Leak Repair | $200-400 |
| AC Hose Repair/Replace | $150-300 |
| Expansion Valve Replacement | $200-450 |
| Condenser Replacement | $400-900 |
| Compressor Replacement | $500-1,200 |
| Evaporator Replacement | $600-1,500 |
* Prices are estimates and may vary by vehicle make/model. Contact us for an accurate quote.
Our 5-Step AC Repair Process
TL;DR: We diagnose the problem accurately first, explain what's needed, then fix it right the first time with quality parts and EPA-certified refrigerant handling.
Complete AC Inspection
Full system check including pressure and temperature testing
Leak Detection
UV dye and electronic leak detection for precise diagnosis
Component Testing
Compressor, condenser, evaporator, and electrical check
Expert Repair
Quality parts, EPA certified refrigerant handling
Performance Verify
Temperature output and pressure confirmation
AC Compressor Auto Repair & Replacement
TL;DR: The AC compressor is the heart of your car's air conditioning system. When it fails, your AC stops cooling completely. We offer same-day AC compressor repair and replacement with quality parts, warranty protection, and transparent pricing ($500-$1,200 depending on vehicle).
What Does the AC Compressor Do?
Your car's AC compressor pumps refrigerant through the entire air conditioning system, compressing low-pressure gas into high-pressure gas that releases heat through the condenser. Without a working compressor, refrigerant can't circulate, and your AC blows nothing but hot air. The compressor is the most expensive component in your AC system, but also the most critical.
Signs Your AC Compressor Is Failing
Compressor not pumping refrigerant
Internal bearing failure
Electrical or mechanical failure
Internal compressor damage
Clutch or pressure switch issues
Seal failure, refrigerant escaping
AC Compressor Replacement Cost (2025)
AC compressor replacement typically costs $500-$1,200 including parts and labor, depending on your vehicle's make and model. This includes:
- New or remanufactured OEM-quality compressor
- New O-rings, seals, and receiver/drier
- Fresh refrigerant (R-134a or R-1234yf)
- Proper vacuum and leak testing
- Warranty protection on parts and labor
Why compressor replacement costs vary: Luxury and European vehicles often require more expensive compressors and longer labor times. Vehicles with R-1234yf refrigerant cost more to recharge. We provide free, accurate quotes before any work begins.
Why Choose Us for AC Compressor Repair?
Same-Day Service
Most compressor replacements done same-day. No suffering in the heat.
Warranty Protection
All compressors backed by manufacturer warranty plus our workmanship guarantee.
EPA Certified
Proper refrigerant recovery and handling. R-134a and R-1234yf certified.
Need AC Compressor Repair Now?
Don't wait until your compressor fails completely. A struggling compressor can damage other AC components. Get it checked today—same-day service available.
Call (707) 584-7727Why Choose Rohnert Park Transmission for AC Repair?
ASE Certified Technicians
Our mechanics are ASE certified with specialized training in automotive AC systems and refrigerant handling.
EPA Certified Refrigerant Service
We're EPA Section 609 certified to properly handle both R-134a and the newer R-1234yf refrigerants.
30+ Years Local Experience
Family-owned since 1989, serving Sonoma County with honest, reliable auto repair.
Same-Day Service Available
Most AC repairs completed same-day so you're not stuck suffering in the California heat.
All Makes & Models
From Honda to BMW, Chevy to Toyota—we service every brand and handle both old and new refrigerant types.
Transparent Pricing
Free estimates, upfront pricing, no surprise charges after the work is done.
Ready to Get Your AC Fixed?
Don't spend another day sweating in your car. Call us now or stop by— no appointment needed for a diagnostic.
Auto AC Repair Near You in Sonoma County
We proudly serve drivers throughout Sonoma County with expert car air conditioning repair services. Click your city for location-specific information.
Car AC Repair FAQs
Common questions about auto air conditioning problems and repairs, answered by our ASE certified technicians.
Why is my car AC blowing hot air?
The most common causes are low refrigerant (often from a leak), a failed compressor, electrical issues, a clogged condenser, or a malfunctioning blend door actuator. Our diagnostic service pinpoints the exact cause so we can fix it right the first time.
How much does car AC repair cost?
AC repair costs vary by issue: refrigerant recharge $150-350, leak repair $200-400, compressor replacement $500-1,200, condenser replacement $400-900. We provide free estimates before any work begins and always explain your options.
How often should I recharge my car AC?
A properly functioning AC system shouldn't need regular recharging. If your AC needs frequent recharging, you likely have a refrigerant leak that should be repaired. We recommend having your AC inspected if cooling performance decreases.
What's the difference between R-134a and R-1234yf refrigerant?
R-134a is the older refrigerant used in vehicles made before 2015. R-1234yf is the newer, more environmentally friendly refrigerant required in vehicles made after 2015. We're EPA certified to service both types and stock both refrigerants.
Can I drive with a broken car AC?
Yes, you can drive safely with a broken AC, but it's uncomfortable in hot weather and can affect your ability to defog windows. If the AC compressor has seized, it could damage the serpentine belt, so have it inspected soon.
How long does AC repair take?
Simple repairs like AC recharge take 30-60 minutes. Leak repairs take 1-2 hours. Compressor or condenser replacement takes 3-5 hours. We offer same-day service for most repairs so you're not stuck in the heat.
Why does my car AC smell bad?
A musty or mildew smell indicates mold or bacteria growth in the evaporator or air ducts. A sweet smell could indicate a refrigerant leak. We can clean your AC system and replace the cabin air filter to eliminate odors.
Do you service all vehicle makes and models?
Yes! Our ASE certified technicians service all makes and models including domestic (Ford, Chevy, Dodge), Japanese (Toyota, Honda, Nissan), European (BMW, Mercedes, VW), and Korean (Hyundai, Kia) vehicles.
What's included in your AC diagnostic?
Our comprehensive AC diagnostic includes system pressure testing, temperature output measurement, refrigerant level check, leak detection using UV dye and electronic sensors, compressor operation test, and electrical system inspection.
Is there a warranty on AC repairs?
Yes, all our AC repairs come with warranty protection. We use quality OEM and aftermarket parts backed by manufacturer warranties, plus our workmanship guarantee for your peace of mind.
How do I know if my AC compressor is bad?
Common signs of a failing AC compressor include: no cold air at all, loud grinding or squealing noises when AC is on, the AC clutch not engaging (no click when you turn on AC), hot air only even with refrigerant, or visible refrigerant leaks around the compressor. If you notice any of these symptoms, bring your car in for a diagnostic—a failing compressor can damage other AC components if ignored.
Should I repair or replace my AC compressor?
In most cases, replacement is better than repair for AC compressors. Internal compressor repairs are rarely cost-effective because labor costs exceed the benefit, and rebuilt compressors often fail again. We recommend full compressor replacement with new or remanufactured units that come with warranty protection. We'll always explain your options and let you decide.
How long does AC compressor replacement take?
AC compressor replacement typically takes 3-5 hours depending on your vehicle's make and model. The process includes evacuating the old refrigerant, removing the failed compressor, replacing O-rings and seals, installing the new compressor, vacuuming the system to remove moisture, and recharging with fresh refrigerant. We offer same-day compressor replacement for most vehicles.
What causes AC compressor failure?
The most common causes of AC compressor failure are: running the system low on refrigerant (causes overheating and internal damage), lack of lubrication from refrigerant leaks, electrical issues preventing proper clutch engagement, contamination from debris in the system, and normal wear over 100,000+ miles. Regular AC system checks can catch early warning signs before complete failure.
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Get Your Car AC Fixed Today
Same-day service available. ASE certified technicians. EPA certified refrigerant handling. Serving Rohnert Park and all of Sonoma County since 1989.