Auto Repair Shop St Charles Missouri MO.

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1665 Scherer Pkwy. St Charles, MO 63303




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Air Conditioning Maintenance, Service & Repair


car air conditioning hot air


Air Conditioning Maintenance
Don’t lose your cool over an air conditioning system that’s not working properly!
Bring in your car, truck or SUV for air conditioning inspection, diagnosis and service.

Did you know that your air conditioning belt drives many other components in your vehicle?
This means that a broken belt can have a much worse impact than simply an uncomfortable trip. The expert mechanics will take care of everything- whether it’s simply a recharge of refrigerant or maybe installing a new compressor- you’ll have peace of mind knowing that your vehicle will keep you cool and safe.



Automotive Air Conditioning System Service Diagnosis & Repair for Cars & Light Trucks


car air conditioning service



The Federal Environmental Protection Agency regulates the type of refrigerant you can use in your air conditioner. Your St. Charles, MO. service technicians are current on EPA rules for properly removing and disposing of used refrigerant, protecting the environment while keeping you cool. At Sparks Tire & Auto in St. Charles Missouri we install quality NAPA replacement parts. Give us a call at 636-946-5900 and let us help keep you safely and economically on the road... (Read more)

Car Air Conditioning ServiceSigns that your vehicle may have a malfunctioning air conditioning system include:
 car air conditioning service not blowing cold air Your air conditioner blows only hot air from the vents
 car air conditioning service not blowing cold air The air conditioner blows cold only sporadically
 car air conditioning service not blowing cold air There are noises when you run your air conditioner


Every Air Conditioning Service begins with our state-of-the-art air conditioning system diagnostic test. This diagnosis includes:
 car air conditioning service not blowing cold air Inspection of the air conditioning compressor drive belt for cracks or damage
 car air conditioning service not blowing cold air Inspection of all air conditioning-related components for leaks or damage
 car air conditioning service not blowing cold air A check for proper operation of the air conditioning compressor and other components prior to service
 car air conditioning service not blowing cold air Testing lines, hoses, seals and other system components for leaks

car air conditioning system serviceDepending on the results of the diagnosis, the system is then serviced only as required to ensure proper operation, which might include:
 car air conditioning service not blowing cold air Evacuating refrigerant from the system
 car air conditioning service not blowing cold air Recharging the system using the appropriate refrigerant to the exact system capacity according to the vehicle manufacturer’s specifications
 car air conditioning service not blowing cold air Performing any necessary service on compressor, evaporator, condenser and electrical controls
 car air conditioning service not blowing cold air Rechecking the system to ensure proper operation.

While your vehicle is at the center, an Sparks Tire & Auto certified mechanic will also perform a Multi-Point Inspection to safeguard that all of the major systems in your car, truck or SUV are in good working order.



Watch as we discuss service and repair issues around your A/C system.

Air Conditioning System - NAPA Service Assistant



Air Conditioning Service/Repair

air conditioning serviceToday’s vehicle a/c systems can lose 5% of their refrigerant per year causing the system to become inefficient. Another thing to remember is the a/c system is used all year long, every time the defroster is used the a/c system is activated to assist in removing the moisture from inside the vehicle which can defog windows much faster than non a/c equipped vehicles. It is recommended that modern a/c systems be tested annually to assure peak performance. Schedule an appointment with one of our factory trained professionals and let us make sure you’re a/c system is running efficiently. We have the latest equipment available to diagnose the computerized components, as well as to service all the different systems including the newer systems on hybrid and electric vehicles. Below is a brief explanation of the major components that make these a/c systems work so well:



The compressor is a belt-driven device that compresses refrigerant gas and transfers it into the condenser. The compressor is the core of your vehicle's air conditioning system.



The condenser's primary function is to cool the refrigerator. The condenser dissipates heat released by compressed gases and condenses them into high pressure liquids.


Receiver (Drier):

The receiver is a metal container that serves as a storage receptacle for the refrigerant; also known as a drier because it absorbs moisture from the refrigerant and filters out harmful debris and acids. You should change your drier every 3-4 years to ensure quality filtration and prevent any chemical damage.


Orifice Tube/Expansion Valve:

The orifice tube (also known as the expansion valve) is a controlling mechanism that regulates refrigerant flow throughout the system. It also converts high pressure liquid refrigerant (from the condenser) into low pressure liquid, so that it can enter the evaporator.



The evaporator removes heat from the inside of your vehicle. The evaporator allows the refrigerant to absorb heat, causing it to boil and change into a vapor. When this occurs, the vapor leaves the evaporator through the compressor, cooling your car and reducing humidity. The evaporator houses the most refrigerant in the heat transfer process and harmful acids can corrode it. This corrosion typically damages the evaporator beyond repair.



NAPA AutoCare Archived Articles

Category - Air Conditioning


Air Conditioning Service in St. Charles
Hey St. Charles! Let's talk about one of our Missouri summertime must-haves: your car A/C. It's real easy for St. Charles drivers to take their car's air conditioner for granted... (Read more)


Automotive Tips from Sparks Tire & Auto: Air Conditioning – Common Problem
Your auto air conditioning system cools and conditions the air in your passenger compartment when you are driving around St. Charles. It also removes moisture from the air to keep your windows from fogging up... (Read more)

Automotive Tips from Sparks Tire & Auto: Making Your A/C System Last Longer
St. Charles drivers know that if their air conditioning system isn’t making cool air like it used to, there is a problem. It may be as simple as adding more of the right kind of refrigerant... (Read more)


Automotive Tips from Sparks Tire & Auto: Air Conditioning Inspection
Most auto manufacturers recommend an interval for an air conditioning system inspection. The inspection uncovers leaks, worn hoses and assesses the condition of the other components... (Read more)

Cool Breeze: Air Conditioning Service at Sparks Tire & Auto in St. Charles
Most Missouri auto owners know that their vehicles need regular preventive maintenance like changing the oil and filters, rotating the tires and refilling the washer fluid. But did you know that your air conditioning system needs routine maintenance... (Read more)


Air Conditioning Maintenance at Sparks Tire & Auto in St. Charles
Warm weather or cold, St. Charles drivers still need to think about their vehicle's air conditioning. Most St. Charles people don't service their air conditioning until after it fails. At Sparks Tire & Auto, we can advise you on your vehicle manufacturers preventive maintenance schedules for air conditioning service, just as we do for transmission service, oil changes and so on.... (Read more)

A Cold Day in St. Charles – Air Conditioning Service at Sparks Tire & Auto
Most St. Charles drivers worry about a breakdown or a tire blowout on a busy Missouri highway, but don't worry too much about failure of their air conditioning system. A breakdown on the side of the road can be a miserable and dangerous affair during St. Charles rush hour, but so can a long ride in a hot vehicle... (Read more)


Cabin Air Filter- NAPA Service Assistant





Having trouble with your car or light trucks air conditioning system?   Contact us for advice.





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Monday – Friday: 8am – 5pm
Saturday – Sunday: Closed

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Sparks Tire and Auto Repair
1665 Scherer Pkwy, St Charles, MO 63303

Ph. 636-946-5900

NAPA Dealer St. Louis Missouri

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