Auto AC Repair San Antonio | Fast, Reliable Car Air Conditioning Service Near You
Complete AC System Diagnostics
FREE AC Performance Check – No Appointment Needed
Our technicians use advanced diagnostic equipment to accurately identify issues with your car’s AC system. We avoid guesswork and unnecessary repairs. Using our comprehensive diagnostic process, we check every component of your AC system:
What’s Included in Your FREE AC Inspection
AC Pressure Testing
- Measure high side & low side refrigerant pressure readings.
- Compare readings to manufacturer specifications
- Identify undercharge or overcharge conditions
Cooling Performance Test
- Test AC output temperature at vents
- Check airflow volume from cabin vents.
- Listen for unusual sounds during operation
Visual Leak Inspection
- Test all AC fuses and relays
- Inspect the control panel switches & temperature controls.
- Verify compressor clutch engagement
- Inspect wiring for damage or corrosion
Component Inspection
- Examine the condenser for debris or damage (this condition will cause higher engine temperature and poor AC performance).
- Check cooling fans (electric or clutch-type) for proper operation
- Inspect AC belt for wear, cracks, or slipping
- Test cabin air filter condition
Get Directions for a FREE CHECK or AC Repair in San Antonio!
Auto Service Experts
📍 13050 San Pedro Ave, San Antonio, TX 78216
📞 (210) 495-6688
⏰ Mon-Fri: 8:00 AM – 6:00 PM
Serving North Central San Antonio, conveniently located near the neighborhoods of Stone Oak, Hollywood Park, Hill Country Village, and Encino Park. We’re your local, family-owned auto AC repair experts, not a chain shop. When you bring your vehicle to Auto Service Experts, you get personalized service from technicians who live and work in your community.
See what our customers say about our AC repair service
⭐⭐⭐⭐⭐ 4.6 rating from 306+ verified reviews – Read All 300+ Reviews on Google
Why Local Residents have Trusted Auto Service Experts For 20+ Years
“Just got my old 2013 Altima back after the AC had been out for months. Not only does it work better than I remeber it working, They did it for a good bit less than the dealership was going to do it for. They even helped me expedite my vehicle pick up in a time crunch. They did absolutley everything I asked.”
Services
“A/C installation & repair, Auto A/C recharge, Auto A/C replacement”
-Reviewed January 2024
“I just recently was having issues with my ac and I went to get my ac repaired and let me tell you it actually works better than it did before! It works so good and definitely much needed in this Texas heat! I got my discharge line, ac compressor and dryer fixed! I will no longer be taking my car anywhere else but here. They did a fantastic job and the receptionist was so kind and helpful! She definitely made the whole experience better. Thank you!”
Reviewed Jan 2024
“Auto Service Experts checked out my AC and had it blowing cold again in no time. The pricing was reasonable and they didn’t try to upsell me on anything. Good, honest service.”
Price assessment
“Great price”
Services
“Air & cabin filter replacement”
-Reviewed December 2025
Advanced Car AC Diagnostics
AC Dye Testing – Advanced Leak Detection (if low refrigerant detected)
- UV dye injection for pinpoint leak location
- Electronic leak detection for hard-to-find leaks
- Pressure decay testing
- If dye testing is required we will provide you with complete pricing before proceeding.
Electrical System Check
- check for visible Freon oil seepage on all lines to the compressor, condenser, and firewall.
- Inspect all connections on compressor, condenser, & evaporator.
- Check hoses for damage or loose fittings.
Why Qur In-Depth Diagnostic Process Makes a Difference
AC problems can have multiple causes. A simple “recharge” without fixing leaks is a temporary band-aid, and a waste of your money. Our thorough automotive diagnostic services find the root cause so you get a lasting repair backed by an excellent warranty.
Our technicians are also trained & experienced in repairing hybrid car air conditioning systems.
In this image, an ASE certified AC repair specialist performs diagnostics on a Chevy Equinox AC system Y1234F. The gauge reading indicates very low refrigerant levels. In this case, the refrigerant levels are so low that the AC clutch will not engage.
What’s Wrong With Your Car’s AC? Common Issues We Fix
- AC Blowing Hot Air – Most common causes include low refrigerant due to leaks, failed compressors, electrical issues, or clogged expansion valves.
- Weak airflow from vents – Common causes include a clogged cabin air filter, failed blower motor, blocked evaporator, or duct obstruction.
- Strange noises (clicking, hissing, squealing) – Possible causes include a failing compressor, loose belt, debris in the blower motor, or a refrigerant leak.
- Water Pooling Insinde Your Car – This often indicates a clogged AC drain tube and should be repaired right away to prevent water damage to your vehicle’s interior and electronics.
- Bad odors from AC system
- AC works intermittently
- Compressor not engaging
- Refrigerant leaks
- Electrical issues preventing AC operation – If electrical issues are detected, our Master Techs are also experts in auto electrical repair & diagnostics.
Professional AC Repairs
Once we’ve diagnosed your AC problem, we provide expert repairs using quality parts and proven methods:
Refrigerant Service
- Refrigerant Recharge – $150-$250 (if no leaks detected). R-134a for pre-2017 vehicles, R-1234yf for 2017+)
- Refrigerant Recovery & Recycling (EPA-compliant disposal)
- System Evacuation & Recharge (proper procedure for leak repairs)
Major Component Replacement
- Compressor Replacement – The compressor is the “heart” of your AC system; includes new refrigerant oil.
- Condenser Repair/Replacement – The condenser is critical for heat dissipation and is often damaged by road debris.
- Evaporator Service – The evaporator is ocated inside dashboard and is labor-intensive to get to, but essential for AC functioning.
- Expansion Valve/Orifice Tube Replacement – These regulate refrigerant flow & pressure within the system.
Air Quality & Performance
- Cabin Air Filter Replacement – Filters get clogged with dust, pollen, and odors.
- Evaporator Cleaning – We remove mold and bacteria that cause bad smells.
- Condenser Cleaning – We remove debris that blocks airflow.
Electrical & Control Repairs
- Blend Door Actuator Replacement – This controls hot/cold air mixing.
- AC Pressure Switches – These protect against high- and low-pressure cutoffs.
- Temperature Sensors – Ensure accurate climate control.
- Control Module Repair – These are the electronic controls for automatic climate systems.
- Wiring Repairs – We fix damaged or corroded electrical connections.
Leak Detection & Repair
- UV Dye Testing – Fluorescent dye reveals leak locations under UV light.
- Electronic Leak Detection – This pinpoints small leaks in hard-to-reach areas.
- O-Ring & Seal Replacement – These connections are common leak points.
- Hose Replacement – Cracked or damaged refrigerant hoses are replaced.
AC System Components
- AC Belt & Pulley Replacement – Worn belts cause squealing & slipping.
- AC Compressor Clutch Repair – This allows the compressor to engage/disengage.
- Condenser Fan Replacement – These are electric fans that cool refrigerant.
- Accumulator/Receiver-Drier Replacement – This filters moisture and debris.
AC System Warning: Don’t Ignore Overheating
⚠️ Important: If your condenser is blocked by debris, it can cause your engine to overheat. Overheating can lead to serious engine damage.
If your temperature gauge climbs into the red zone:
- Pull over safely and turn off the engine immediately
- Let the engine cool for 30+ minutes before opening the hood
- Call for towing if the problem persists
Overheating and poor AC performance together may indicate:
- Blocked condenser (restricts airflow to radiator behind it)
- Cooling fan failure (fans cool both AC and engine)
- Radiator problems requiring engine cooling system service
Don’t risk catastrophic engine damage – get overheating diagnosed immediately.
Our AC Repair Process: What to Expect
- System Verification – After repairs, we test your AC system to ensure it’s cooling properly and all issues are resolved.
- Performance Test
- Visual Inspection
- Diagnostic Testing
- Leak Detection
- Detailed Estimate – Before any repair work begins, you will receive a clear, written estimate with no unexpected charges.
- Expert Repairs – Our ASE-certified technicians complete all necessary repairs using quality parts and proper procedures.
Frequently Asked Questions
How long does auto AC repair take?
Most AC repairs are completed in 2-4 hours. Complex repairs like compressor or evaporator replacement may take 4-8 hours. We offer same-day service for most repairs.
How often should my car’s AC be serviced?
We recommend annual AC performance checks before summer. Regular maintenance prevents costly breakdowns and ensures optimal cooling efficiency.
Can you repair AC systems with R-1234yf refrigerant?
Yes! We service both older R-134a systems and newer R-1234yf systems found in 2017+ vehicles. We have the specialized equipment for both refrigerant types. We provide comprehensive AC recharge and refrigerant leak repair services.
Will my AC repair be covered under warranty?
If your vehicle is still under manufacturer warranty and the issue is covered, we can work with your warranty company. We also offer warranties on our repairs.
Why is my AC working sometimes but not others?
Intermittent AC problems often indicate electrical issues (bad relay, faulty pressure switch, wiring problem) or low refrigerant. Our diagnostics will pinpoint the cause.
Is it safe to drive with a broken AC?
While you can drive with a broken AC, extreme heat can be dangerous – especially for children, elderly passengers, or anyone with health conditions. Get it fixed quickly for safety and comfort. If you have a serpentine belt system and the AC compressor clutch locks up, it will damage, melt, or break the drive belt. Depending on the make and model of the vehicle, this can cause overheating, failure to charge, & loss of power steering, creating real safety concerns.
Can I just add refrigerant myself?
DIY refrigerant kits are temporary fixes at best. If your AC is low on refrigerant, there’s a leak that needs professional repair. Adding refrigerant without fixing the leak wastes money and harms the environment.
How much does AC repair cost in San Antonio?
AC repair costs vary by service: refrigerant recharge starts at $149-400, leak detection $149-400, and compressor replacement $800-2,800. We provide a free AC system inspection and accurate quote before any work. Call (210) 495-6688 for your free estimate.
Do you serve Stone Oak, Hollywood Park, and nearby areas?
Yes! We’re located at 13050 San Pedro Ave on Highway 281 near Wurzbach Pkwy, conveniently serving Stone Oak, Hollywood Park, Hill Country Village, Thousand Oaks, and all of North Central San Antonio. Most customers are within a 10-15 minute drive.
How long does car AC repair take?
Most AC repairs take 1-3 hours. Simple refrigerant recharges take about 45 minutes, while compressor replacements may require 2-4 hours. We offer same-day service for most AC issues. Drop off your vehicle in the morning, pick it up the same afternoon.
What causes car AC to stop working in San Antonio heat?
Common causes include refrigerant leaks (most common), failed AC compressor, electrical issues, clogged condenser, or faulty blower motor. Our ASE-certified technicians use professional diagnostic equipment to identify the exact problem. Free inspection available – we’ll tell you exactly what’s wrong before any repair.
Do you work on all vehicle makes and models?
Yes! We service domestic and import vehicles including Honda, Toyota, Ford, Chevrolet, BMW, Mercedes, Volkswagen, Nissan, and more. Our shop has the equipment and expertise to handle AC repairs on cars, trucks, SUVs, and hybrids.
Don’t Suffer in the San Antonio Heat- Schedule Your Auto AC Repair Today
Your car’s AC should keep you comfortable, not leave you sweating. Don’t wait until your AC completely fails. If your car’s AC isn’t cooling like it should, we can diagnose and fix it quickly. We look forward to getting you back to comfortable driving!
Related Services
Heating System Repair – For when you need heat in winter
Engine Cooling System Service – Radiator and cooling repairs
General Auto Repair – Complete automotive services
How Your Car’s AC System Works – Educational guide
Common AC Problems – AC diagnostic and repair tips for common air conditioning sysem issues by ASE Techs.
Common Causes for AC System Failure in San Antonio
San Antonio’s extreme heat puts extra strain on vehicle AC systems. When it’s over 100°F outside, your AC works overtime to keep cabin temperatures comforatble. This constant demand accelerates wear on:
- Compressor seals and bearings – Heat causes faster deterioration
- Refrigerant seals – UV exposure and heat cause rubber seals to crack
- AC belts – Extreme temperatures reduce belt life
- Electrical components – Heat affects sensors and switches
- In summary, vehicles in San Antonio require more frequent AC maintenance than those in milder climates. Annual AC checks help prevent breakdowns during the hottest months.
Cabin Air Filter Change & System Cleaning
Your car’s air conditioner is not just responsible for keeping you cool. It also filters and conditions the air you breathe while driving or idling in traffic. The AC system can become clogged when debris and contaminants build up over time. If not properly serviced, bacteria, allergens, mildew, and mold grow inside your vehicle air conditioner, which leads to foul-smellingair coming from the vents and can even make you and your family sick!
Most modern automobiles come equipped with cabin air filters behind the glove box or in the air intake vents in front of the windshield. Thesefilter and clean air as it enters the heating, ventilation, & air conditioning system, known as the HVAC system. They block and trap dust, pollen, pollutants, and other contaminants before they enter the passenger cabin area. Therefore, a dirty cabin air filter can result in the air you breathe inside your vehicle being of poorer quality than the outside air. Cabin air filter replacement is usually recommended every 15,000 miles (or every 5th oil change). Still, it may be necessary more often if driving in heavy traffic congestion or a location with high pollution. If your car or truck does not have a cabin air filter, ask about a cleaning service to eliminate bacteria, mold, and unpleasant smells from within the system.
When Should You Have Your Car Air Conditioner Serviced?
- Yearly, before it gets hot!
- As soon as you notice any decline in AC performance, weak airflow, or warm air.
- If you detect a foul or musty odor from the vents.
AC Service Includes:
- Inspecting lines and hoses for corrosion and leaks.
- Checking high and low pressure readings.
- Testing output air temperature on the coldest setting.
- Changing or cleaning refrigerant.
- Following environmentally safe refrigerant handling and disposal procedures as outlined in the Environmentally Sustainable Actions Certification Program.
Benefits of Service:
- Stay cool and comfortable regardless of Texas weather!
- Reduce repair costs and extend the lifespan of AC components.
- Protect your lungs from mildew, mold, bacteria, allergens, and pollutants.
We back Our Auto Air Conditioning Repairs and Services with the Best Warranty in the Business!
Stop Leak Cans Cause Major Damage
When faced with the need for auto AC repair, it may be tempting to try and fix the problem yourself with a can of stop leak. These are not cheap, quick fixes! They are known in the automotive industry as “suicide cans” because most of them cause severe damage to car air conditioning system components. Repairing this damage (which often requires replacing significant components or the entire system) is much more costly than simply having a leak repaired by a qualified auto AC mechanic.
Auto Air Conditioner Performance Tips
- During AC service, special oils are inserted into the system along with the refrigerant. The AC should be turned on periodically, even during cold weather. This allows these oils to circulate through the system and provide lubrication & protection for components, seals, and gaskets.
- If your auto A/C produces a foul-smelling odor, using the outside air mode rather than the recycled air mode will help reduce the odor and provide fresher air. Your vehicle may need a cabin air filter change, or AC system cleaning service.
- Even if your A/C is blowing cold air, a clogged cabin air filter blocks most of that air from reaching you. Restricted cabin air filters cause the system to work much harder while providing little relief from the heat!
- Car air conditioning systems require a lot of horsepower to operate (usually 15% – 20%), reducing fuel economy quite a bit.
- Operating your car’s AC generates a lot of heat in the engine and strain on the vehicle’s cooling system. A well-maintained cooling system will be better able to handle this extra workload and prevent the engine from overheating, which can result in costly repairs.
- If your car is in a secure location, leave the windows cracked while parked. This will keep the interior temperature from rising as high, allowing your A/C to cool down the cabin more quickly.
- When you start your car, turn the A/C on to the coldest setting. Use maximum blowing speed, and roll all windows down completely. This will force hot air out of the vehicle and generate circulation, speeding up the cooling process.
- Turning on the air recirculation mode once the cabin air temperature is sufficiently cool allows the air conditioning system to operate more efficiently.
- With automatic temperature control AC systems, the cabin air will reach your desired temperature faster if you set it at the coldest setting first, then readjust to the desired temperature as needed.
- Once the car is sufficiently cooled, use lower blower speeds. This allows the A/C system to generate colder air.