
Air Conditioning Service + Repair
Our Service Centers
Three Lakewood Service Centers For All Your Auto Needs!
When you come into our repair center, we want you to feel right at home. We hold down a large presence at the corner of West Alameda Parkway and Union Boulevard. Our Green Mountain Havoline Xpress Lube and Green Mountain Shell Gasoline Station are part of our comprehensive automobile service platform. All of these locations are run by our family members. That way we are certain to extend the same advantages along with the friendly, family feeling we have been known to deliver for decades.
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Enjoy a cup of coffee in our waiting room!
Comprehensive Car Air Conditioning Services | Green Mountain Auto, Denver CO
At Green Mountain Auto in Denver, we provide a full range of professional air conditioning services to keep your vehicle’s climate control system operating at peak performance. Our ASE- and MACS-certified technicians use advanced diagnostic tools and high-quality parts to ensure long-lasting results and reliable comfort.
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Our Car AC Services Include:
Complete AC System Inspection & Diagnostics
Thorough testing of the entire air conditioning system, including pressure checks, temperature readings, and visual inspections.
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AC Performance Testing
Evaluation of cooling efficiency, airflow, and compressor operation to confirm your system is working as designed.
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Refrigerant Recharge (R-134a & R-1234yf Systems)
Safe recovery, evacuation, and recharging of refrigerant to restore proper cooling performance.
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AC Leak Detection & Repair
Identification and repair of refrigerant leaks using electronic and UV dye detection methods.
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AC Compressor Replacement or Rebuild
Expert diagnosis and installation of new or remanufactured compressors to restore full system functionality.
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Condenser Replacement or Cleaning
Removal of debris and buildup or replacement of a damaged condenser to maintain optimal heat transfer.
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Evaporator Core Service & Replacement
Repair or replacement of a leaking or clogged evaporator core for consistent cabin cooling.
Expansion Valve or Orifice Tube Replacement
Ensures proper refrigerant flow and pressure within the AC system.
AC System Flushing & Cleaning
Complete removal of contaminants and debris from the AC system to improve performance and longevity.
Cabin Air Filter Replacement
Installation of a fresh cabin air filter to improve air quality and ventilation efficiency.
AC Blower Motor Repair or Replacement
Restores proper airflow through the vents for consistent cabin comfort.
Drive Belt, Pulley, or Tensioner Replacement
Maintenance of essential components that power the AC compressor and ensure smooth operation.
Electrical System Diagnosis & Repair
Troubleshooting of wiring, relays, switches, and sensors that affect air conditioning performance.
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Climate Control Module Calibration or Repair
Correction of issues in electronic or manual climate control units for accurate temperature management.
Heater Core Service & HVAC System Integration
Repair or replacement of heater cores to maintain proper heating and defrosting function.
Defroster and Vent Control Repair
Restoration of airflow direction and temperature control for improved visibility and comfort.
AC Hose, Line, and O-Ring Replacement
Repair or replacement of worn or leaking components to prevent refrigerant loss.
Odor Elimination & System Sanitization
Treatment to remove mold, bacteria, and unpleasant odors from ducts and evaporator surfaces.
Preventive Maintenance & Seasonal AC Inspections
Routine check-ups to identify early signs of wear and ensure reliable operation before peak summer heat.
Hybrid and Electric Vehicle AC Service
Specialized maintenance and repair for advanced AC systems in hybrid and electric vehicles.

Frequently Asked Questions About Car Air Conditioning Service | Green Mountain Auto, Denver CO
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Why is my car AC blowing warm air instead of cold?
Your car’s AC may be blowing warm air because of low refrigerant, a leak in the system, or a failing compressor. At Green Mountain Auto in Denver, we perform detailed AC diagnostics to find the cause and recharge or repair your system so it blows cold again.
How often should I service my car’s air conditioning system?
It’s recommended to have your vehicle’s AC inspected once a year, ideally before summer. Regular AC maintenance helps catch small issues—like leaks or low refrigerant—before they turn into costly repairs.
What are signs that my car’s AC needs repair?
Common signs include:
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Warm air blowing when set to cold
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Weak airflow or air that barely comes from the vents
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Musty or foul odors when AC is on
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Unusual noises like grinding or squealing
If you notice any of these, schedule an auto AC inspection in Denver with Green Mountain Auto.
Can I drive my car if the AC isn’t working properly?
Yes, but it’s not recommended for long periods. A failing compressor or refrigerant leak can cause extra strain on your engine or electrical system. Have it checked soon to prevent further damage.
How much does car AC repair cost in Denver?
The cost varies depending on the issue—simple fixes like an AC recharge may be under $200, while compressor replacements or leak repairs can cost more. Green Mountain Auto provides upfront estimates and transparent pricing before any work begins.
Does Green Mountain Auto service all makes and models?
Yes! Our ASE- and MACS-certified technicians can service the air conditioning systems on all makes and models of cars, trucks, and SUVs, both domestic and import.
What makes Green Mountain Auto different from other Denver repair shops?
We combine certified expertise, honest communication, and state-of-the-art diagnostic tools. You’ll get clear answers, fair pricing, and a cool, comfortable ride—guaranteed.
How do I schedule an AC inspection at Green Mountain Auto?
You can call us, book online, or stop by our Denver shop near Lakewood. Our friendly team will schedule your car AC service at a time that’s convenient for you.


