Kool2U's Proprietary Auto AC Diagnostic Service Finds The Leaks Auto Repair Shops Miss!
Professional AC diagnostics and repair at your home, workplace or business.
Kool2U Auto Repair Service provides automotive air conditioning diagnostics and repair throughout New Braunfels and the surrounding Hill Country.
Instead of automatically driving to a repair shop when your AC starts blowing warm, Kool2U can bring professional diagnostic equipment and AC service directly to your vehicle.
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Automotive air conditioning is one of Kool2U's core specialties.
Our technicians are led by an ASE Master Technician with more than 30 years of professional automotive diagnostic and repair experience.
Kool2U also developed its proprietary Max Kool AC diagnostic process to provide a systematic approach to finding refrigerant leaks and diagnosing automotive AC problems before repairs are recommended.
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Whether your vehicle needs leak detection, compressor diagnosis, electrical testing, refrigerant service or another AC repair, the goal is simple: Determine what is wrong before replacing parts.
Professional AC diagnostics. Mobile convenience. Full shop support when needed.
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Mobile Auto AC Repair in New Braunfels
Many automotive AC problems can be diagnosed and repaired directly at your home, workplace or business.
Kool2U mobile AC service may include:
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AC performance testing
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Refrigerant leak detection
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Compressor diagnosis
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Condenser diagnosis
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Evaporator diagnosis
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Pressure testing
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Electrical diagnosis
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Climate control diagnosis
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Refrigerant recovery
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Evacuation and recharge
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R-12 service
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R-134a service
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R-1234yf service
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Selected AC component replacement
This can eliminate the need to spend part of your day dropping off a vehicle, finding transportation and returning later to pick it up.
When the repair can reasonably be completed at your location, Kool2U comes to you.
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Why Is My Car AC Blowing Warm Air?
Warm air from the vents can be caused by many different problems.
Possible causes include:
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Low refrigerant
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Refrigerant leak
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Compressor problem
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Condenser problem
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Evaporator problem
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Expansion valve problem
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Cooling fan problem
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Pressure sensor fault
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Electrical problem
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Blower problem
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Climate control fault
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Airflow problem
Because many different failures can create similar symptoms, simply adding refrigerant or replacing a compressor without testing the system can lead to unnecessary repairs.
Warm air is the symptom.
Diagnosis determines the cause.
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Max Kool AC Diagnostics
Kool2U developed its proprietary Max Kool AC diagnostic process to provide our technicians with a systematic way to evaluate automotive air conditioning problems.
An AC system combines refrigeration, mechanical components, electrical circuits and computer controlled systems.
A proper diagnosis may require evaluating several parts of the system rather than focusing on a single pressure reading or component.
Depending on the problem, Max Kool diagnostics may include:
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High side pressure evaluation
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Low side pressure evaluation
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Refrigerant leak detection
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Temperature testing
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Compressor performance
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Condenser performance
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Evaporator performance
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Pressure sensor operation
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Cooling fan operation
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Electrical testing
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Climate control testing
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System performance testing
The objective is not to replace parts until cold air returns.
The objective is to determine what failed and recommend the appropriate repair.
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Refrigerant Leak Detection
Automotive AC systems are designed to operate as closed refrigerant systems.
When refrigerant is lost, the source of that loss should be investigated.
Potential leak locations include:
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Compressor seals
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Condenser
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Evaporator
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Refrigerant hoses
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Refrigerant lines
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Service ports
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O rings
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Fittings
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Other AC components and connections
Some leaks are obvious.
Others may be small, intermittent or difficult to locate.
Kool2U uses professional diagnostic methods to help determine where refrigerant is escaping before recommending repair.
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Low Refrigerant Is Usually a Symptom
If an AC system is low on refrigerant, adding more may temporarily improve cooling.
That does not necessarily solve the underlying problem.
Refrigerant loss may result from:
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Leaking hose
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Failed seal
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Damaged condenser
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Leaking evaporator
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Compressor leak
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Service port leak
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Previous component failure
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Previous AC repair
Repeatedly adding refrigerant without addressing the source of the loss may only delay the repair.
Kool2U focuses on determining why the system is low before recommending the next step.
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R-12, R-134a & R-1234yf AC Service
Kool2U services supported automotive AC systems using R-12, R-134a and R-1234yf refrigerants.
These refrigerants are different and require the correct equipment and service procedures.
EPA identifies CFC-12, HFC-134a and HFO-1234yf as major motor vehicle AC refrigerants used across different generations of vehicles. R-1234yf is now used in the majority of newer light duty vehicles, while existing R-134a vehicles may continue to be serviced with R-134a. US EPA
Kool2U verifies the correct refrigerant and vehicle specifications before performing refrigerant service.
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Professional AC Evacuation & Recharge
A professional evacuation and recharge is different from simply adding refrigerant to the system.
Depending on the vehicle and system condition, service may include:
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Recovering existing refrigerant
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Evacuating air and moisture
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Pulling the AC system into vacuum
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Recharging with the correct refrigerant
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Charging to the manufacturer specified amount
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Checking system pressures
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Measuring vent temperature
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Evaluating cooling performance
EPA regulates servicing procedures and refrigerant handling for motor vehicle AC systems. US EPA
If the system has lost refrigerant because of a leak, additional diagnosis or repair may be recommended.
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AC Compressor Diagnostics & Repair
The compressor is one of the major components of an automotive AC system.
However, a compressor that is not operating does not automatically mean the compressor itself has failed.
Possible causes include:
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Low refrigerant
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Electrical fault
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Compressor control problem
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Relay
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Fuse
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Pressure sensor
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Wiring problem
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Control module problem
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Internal compressor failure
Kool2U tests the system before recommending compressor replacement.
When compressor replacement is necessary, the rest of the AC system should also be evaluated for conditions that may have contributed to the failure.
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AC Condenser Problems
The condenser releases heat from the refrigerant as air passes through it.
A condenser problem can reduce cooling performance or cause the AC system to stop cooling altogether.
Condenser problems may involve:
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Refrigerant leaks
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Road debris damage
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Collision damage
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Restricted airflow
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Internal restriction
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Cooling fan problems
Kool2U can evaluate the condenser and related components before recommending repair or replacement.
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AC Evaporator Problems
The evaporator is located inside the HVAC system and absorbs heat from air entering the passenger compartment.
Evaporator problems may include:
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Refrigerant leaks
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Restricted airflow
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Icing
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Temperature problems
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Drainage problems
Because the evaporator is often located deep inside the dashboard or HVAC housing, replacement can require considerable vehicle disassembly.
Proper diagnosis is especially important before recommending an evaporator replacement.
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Expansion Valve & Refrigerant Flow Problems
The AC system must carefully control refrigerant flow into the evaporator.
Depending on the vehicle, this may involve an expansion valve, orifice tube or another metering device.
Problems can affect:
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Refrigerant flow
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System pressures
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Evaporator temperature
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Cooling performance
Pressure readings, temperature measurements and other diagnostic information can help determine whether a refrigerant flow problem is present.
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Automotive AC Electrical Diagnostics
Modern AC systems depend heavily on electrical and electronic controls.
A vehicle can have the correct amount of refrigerant and still fail to cool because of an electrical problem.
Possible electrical faults may involve:
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Compressor controls
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Relays
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Fuses
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Pressure sensors
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Temperature sensors
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Cooling fans
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Blower motors
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Wiring
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Connectors
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HVAC controls
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Electronic modules
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Vehicle communication networks
Kool2U provides advanced automotive electrical diagnostics when the AC problem extends beyond the refrigerant system.
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Blower & Airflow Problems
Sometimes the AC system is producing cold air but very little air comes through the vents.
That may indicate an airflow problem rather than a refrigerant problem.
Possible causes include:
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Blower motor failure
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Blower control module
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Cabin air filter restriction
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Blend door problem
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HVAC actuator fault
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Evaporator restriction
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Electrical fault
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Climate control problem
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Damaged ductwork
Kool2U can determine whether the problem involves cooling performance, airflow or both.
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AC Works While Driving but Gets Warm at a Stop
An AC system that cools while driving but becomes warmer at idle can provide useful diagnostic information.
Possible causes include:
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Cooling fan problem
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Condenser airflow problem
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Refrigerant charge problem
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Compressor performance problem
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Pressure control problem
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Electrical fault
Kool2U evaluates the system under the conditions where the symptom occurs whenever practical.
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AC Starts Cold Then Turns Warm
An AC system that works normally for a period of time and then begins blowing warm may involve:
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Compressor control problem
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Electrical fault
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Refrigerant problem
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Pressure related shutdown
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Evaporator icing
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Temperature sensor fault
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Climate control problem
Intermittent AC problems often require testing while the condition is occurring.
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Dual Zone & Automatic Climate Control
Many newer vehicles use electronic climate control systems that regulate cabin temperature automatically.
These systems may include:
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Multiple temperature sensors
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Sun load sensors
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Blend door actuators
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Electronic HVAC controls
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Control modules
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Vehicle communication networks
When one side of the vehicle blows a different temperature than the other or automatic temperature control stops working correctly, the problem may be electronic rather than refrigerant related.
Kool2U provides diagnosis for many supported automatic climate control systems.
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Auto AC Repair for Domestic, Asian & European Vehicles
Kool2U provides automotive AC diagnostics and repair for many domestic, Asian and European vehicles.
Domestic Vehicles
Supported manufacturers include Ford, Lincoln, Chevrolet, GMC, Cadillac, Buick, RAM, Dodge, Chrysler and Jeep.
Asian Vehicles
Supported manufacturers include Toyota, Lexus, Honda, Acura, Nissan, Infiniti, Hyundai, Kia, Mazda and Subaru.
European Vehicles
Supported manufacturers include BMW, Mercedes Benz, Audi, Volkswagen, MINI, Porsche, Volvo, Jaguar and Land Rover.
Vehicle AC systems differ between manufacturers, so service procedures should be based on the specific vehicle and system.
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Mobile AC Repair Throughout New Braunfels
Kool2U provides mobile automotive AC service throughout New Braunfels and selected surrounding communities.
That includes many residential areas where bringing the technician to the vehicle can save considerable time.
Service areas include neighborhoods and communities such as:
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Copper Ridge
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Vintage Oaks
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Veramendi
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River Chase
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Havenwood
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Other supported New Braunfels communities
For many residents, AC diagnosis and repair can take place right in the driveway.
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Auto AC Repair in Copper Ridge
Copper Ridge residents can schedule mobile automotive AC diagnostics and selected repairs directly at their homes.
For a community west of central New Braunfels, mobile service can eliminate an unnecessary trip into town simply to determine why the AC stopped cooling.
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Auto AC Repair in Vintage Oaks
Vintage Oaks covers thousands of acres west of New Braunfels, making mobile automotive service especially convenient for many residents.
Kool2U can perform many AC diagnostic and repair procedures directly at the vehicle location.
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Auto AC Repair in Veramendi
Veramendi is one of New Braunfels' largest growing residential communities.
Mobile AC repair allows many residents to have the vehicle diagnosed or serviced at home instead of rearranging their day around a traditional repair shop.
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Auto AC Repair in River Chase
River Chase stretches across a large Hill Country area between New Braunfels and Canyon Lake.
Mobile AC diagnostics can be particularly useful for residents who would otherwise need to travel into town simply to have an AC problem evaluated.
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Auto AC Repair in Havenwood
Havenwood at Hunters Crossing is another New Braunfels community where home based automotive service can provide significant convenience. Many AC problems can be diagnosed and repaired directly in the customer's driveway when working conditions are appropriate.
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AC Repair for Trucks, RVs & Heavy Equipment
Kool2U's automotive AC capabilities extend beyond passenger cars and SUVs.
Pickup & Work Truck AC Repair
Kool2U provides AC diagnostics and repair for many supported pickups, diesel trucks and commercial work vehicles.
Semi Truck AC Repair
Kool2U provides mobile cab AC and HVAC diagnostics for supported commercial trucks and fleets.
RV & Motorhome AC Repair
Kool2U provides service for supported motorhome dash and chassis AC systems and selected RV HVAC applications.
Heavy Equipment AC Repair
Kool2U provides mobile cab AC diagnostics and repair for supported construction, industrial and agricultural equipment throughout New Braunfels and Comal County.
Fleet & Commercial AC Service
Businesses operating multiple work vehicles can schedule mobile AC diagnostics and repair at supported commercial locations.
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Mobile Service When It Makes Sense
Many automotive AC services are well suited to mobile repair.
Depending on the vehicle and problem, Kool2U may be able to perform:
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AC diagnosis
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Leak detection
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Electrical testing
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Pressure testing
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Evacuation and recharge
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Compressor diagnosis
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Condenser diagnosis
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Selected component replacement
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Climate control diagnosis
at your home, workplace or business.
The vehicle should be located in a safe area with sufficient working space.
A level driveway or other suitable paved surface is preferred for many repairs.
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When the Vehicle Should Go to the Shop
Some AC repairs are better performed in a shop environment.
A shop may be more appropriate for:
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Evaporator replacement
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Extensive dashboard disassembly
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Major component replacement
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Complex electrical diagnosis
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Repairs requiring extended service time
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Work requiring additional shop equipment
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Kool2U operates a full service automotive repair facility at:
Kool2U Auto Repair Service
4531 N. Stahl Park, Suite 111
San Antonio, TX 78217
This means New Braunfels customers are not limited to repairs that can be completed from a mobile service vehicle.
Mobile service when it makes sense. Full shop support when it does not.
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Why Choose Kool2U for Auto AC Repair in New Braunfels?
Automotive AC Is a Core Specialty
Automotive air conditioning is one of Kool2U's primary areas of diagnostic and repair expertise.
Diagnostics Come First
We focus on identifying the cause of the AC problem before recommending replacement parts.
Proprietary Max Kool Diagnostics
Kool2U developed its proprietary Max Kool process to provide a systematic approach to automotive AC diagnostics and refrigerant leak detection.
ASE Master Technician Led
Our technicians are led by an ASE Master Technician with more than 30 years of professional automotive diagnostic and repair experience.
Advanced Electrical Diagnostic Capability
Modern automotive AC systems use sensors, wiring, modules and computer controls.
Kool2U has professional diagnostic equipment for AC problems involving electrical and electronic systems.
H3: R-12, R-134a & R-1234yf Service
Kool2U services supported vehicles using these three major automotive refrigerants.
Mobile Service
Many AC diagnostics and repairs can be performed directly at your New Braunfels home, workplace or business.
Full Shop Support
More extensive repairs can be handled through Kool2U's full service automotive repair facility.
Our Own Automotive Technicians
Kool2U uses its own automotive technicians rather than operating as a referral service that sends jobs to unrelated third party mechanics.
5 Year/60,000 Mile Warranty
Qualifying repairs using Kool2U supplied parts are backed by our 5 Year / 60,000 Mile Warranty, subject to applicable terms.
Hundreds of Google Reviews
Kool2U has earned hundreds of Google reviews and a 4.9 star rating.
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Frequently Asked Questions About Auto AC Repair in New Braunfels
Does Kool2U provide mobile auto AC repair in New Braunfels?
Yes. Many automotive AC diagnostics and repairs can be performed at your home, workplace or business throughout the New Braunfels service area.
Why is my car AC blowing warm air?
Warm air can result from low refrigerant, a refrigerant leak, compressor problem, condenser problem, electrical fault, airflow problem, sensor issue or another HVAC problem.
Testing is required to determine the cause.
Does low refrigerant mean my AC only needs a recharge?
Not necessarily.
If refrigerant has been lost, the system may have a leak or another problem that should be diagnosed.
Does Kool2U service R-134a systems?
Yes. Kool2U provides diagnostics, evacuation, recharge and repair for supported R-134a systems.
Does Kool2U service R-1234yf systems?
Yes. Kool2U provides professional diagnostics, evacuation, recharge and repair for supported R-1234yf systems.
Does Kool2U still service R-12 systems?
Yes, for supported vehicles and systems.
Service depends on the condition of the system and refrigerant availability.
Can Kool2U diagnose refrigerant leaks?
Yes. Refrigerant leak detection is one of Kool2U's primary automotive AC diagnostic services.
Does a compressor that will not turn on always need replacement?
No. A compressor may fail to operate because of low refrigerant, an electrical problem, pressure sensor, relay, control problem, wiring fault or internal compressor failure. Diagnosis should come before compressor replacement.
Can Kool2U diagnose AC electrical problems?
Yes. Kool2U provides advanced electrical diagnostics for supported AC problems involving wiring, relays, sensors, blower circuits, compressor controls and climate control electronics.
Can Kool2U repair my AC at my New Braunfels home?
Many AC diagnostics and repairs can be completed through mobile service.
Repairs requiring extensive disassembly or additional shop equipment may be performed at Kool2U's San Antonio repair facility.
H3: Does Kool2U have an auto repair shop in New Braunfels?
No. New Braunfels is part of Kool2U's mobile service area.
Kool2U's physical automotive repair facility is located at 4531 N. Stahl Park, Suite 111 in San Antonio.
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Schedule Auto AC Repair in New Braunfels
If your AC is blowing warm, cooling inconsistently or has stopped working completely, you should not have to guess whether the vehicle needs refrigerant, a compressor, an electrical repair or something else.
Start with diagnosis.
Kool2U brings professional automotive AC diagnostics and repair directly to homes, workplaces and businesses throughout New Braunfels.
When the repair can be performed mobile, we come to you.
When the vehicle needs a shop, Kool2U has one.
Professional AC diagnostics. Mobile convenience. Repair what actually failed.
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Kool2U Auto Repair Service
4531 N. Stahl Park, Suite 111
San Antonio, TX 78217
Monday through Friday
8:00 AM to 5:00 PM
Proprietary Auto AC Diagnostic Process That Finds The Leaks Other Shops Miss!
Without Guesswork, Repeat Visits, or Unnecessary Parts Replacement.​
​Developed and tested by our own ASE Master Technician Aaron Burgess with over 30 years in the auto repair industry.
Our Auto AC Leak Detection System finds the leaks the old Auto AC Diagnostic System (developed in the 1950s) miss!
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A Leap Ahead In Auto AC Leak Detection
Exclusive To Kool2U Auto Repair Service!
Your local auto repair shop and dealership service department use a system for diagnosing your vehicles AC system that was developed in the 1950's. It Involves vacuuming down the refrigerant or freon in your cars AC System. Then injecting oil & dye into the system with nitrogen hoping to "sniff out" or expose the refrigerant leak with a blacklight when the AC system.
So what's the problem?
It produces a kind of hit or miss scenario that tends to find the big leaks but not small, micro leaks in your vehicles AC System. So the obvious leaks in your cars AC system get repaired but it also means that you get to go back & do it all over again in a few days or weeks.
In 2018 most car ac systems switched to R1234yf Refrigerant (Freon). This raised the cost to evacuate and recharge your vehicles ac system up to 10 times higher than the old R134b refrigerant. If your vehicles AC system is an R12 Refrigerant System (70's & 80's) it can be as much as 50X more expensive because it is not produced anymore. It's like finding gold in your grandfather's garage!
What does this mean for you?
Maybe you get lucky the first time. Far too often it means repeated trips to the shop until they find the root in your cars ac system issues.
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Superior AC System Leak Detection
We Don't Throw Parts At It
& Send You Down The Road!
We Find The Leaks In Your Vehicles AC System Other Shops Miss!​
We Will Come To You at your home, work, or on the job site. Cars, Trucks, RV's, Semi Trucks, & Heavy Equipment (Cranes, Excavators, Graders, Bulldozers). It can be taken out to fleets of service vehicles such as Firetrucks, Ambulances, School Buses, & more.
Exclusively Available at Kool2U!

