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5 Best AC Repair Services in St. Louis, MO

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Written By Max Peterson|Last Updated: April 18, 2024

St. Louis residents are well-acquainted with the area's strong summertime heat and humid, sticky air making an efficient air conditioner (AC) key for your comfort and safety in the summer months. If you are in need of AC repairs in St. Louis, look no further than the following service providers. Begin your AC repair company search with these respected St. Louis providers, and learn more about replacing your AC and future-proofing your home with this useful guide.

Top AC Repair Companies in St. Louis, MO

Vitt Heating & Cooling Logo

Vitt Heating & Cooling

Based on 1,205 customer reviews.

Services Offered

Furnace RepairFurnace InstallationBoiler InstallationDuctlessAc InstallationFiltrationInspectionAc RepairIndoor Air QualityMaintenanceBoiler RepairDuct Cleaning


  • Informative resources
  • Prompt service delivery
  • Reliable customer support
4719 Morgan Ford Rd, St. Louis, MO 314-347-3389 vittheating.com
Energy Stars Heating & Cooling Co Logo

Energy Stars Heating & Cooling Co

Based on 860 customer reviews.

Services Offered

Ac InstallationFurnace InstallationMaintenanceAc RepairFurnace RepairIndoor Air QualityDuct CleaningBoiler Installation


  • Clear pricing policy
  • Reliable customer support
  • Informative resources
1350 Grand Ave, Madison, IL 618-477-8337 estarshvac.com
Seliga Heating and Cooling Logo

Seliga Heating and Cooling

Based on 1,308 customer reviews.

Services Offered

Furnace InstallationAc RepairIndoor Air QualityAc Installation


  • Free quote
  • Clear pricing policy
  • Reliable customer support
6211 Gravois Ave, St. Louis, MO 314-481-7333 seligaheatingandcooling.com
Design Aire Heating & Cooling Logo

Design Aire Heating & Cooling

Based on 300 customer reviews.

Services Offered

Ac InstallationFurnace RepairDuctlessBoiler InstallationMaintenanceBoiler RepairEmergency ServicesAc RepairFurnace Installation


  • Clear pricing policy
  • Informative resources
  • Reliable customer support
5804 Hampton Ave, St. Louis, MO 314-739-1600 designaire.net

More Local Hvac Companies

Hoffmann Brothers

User Reviews: 5/5 

1025 Hanley Industrial Ct
Brentwood, MO 63144

Indoor Comfort Team

User Reviews: 4.8/5 

2613 Telegraph Rd
St. Louis, MO 63125

SmartHouse Heating and Cooling

User Reviews: 4.7/5 

6921 Olive Blvd
St. Louis, MO 63130

J.Roberts Heating and Cooling

User Reviews: 4.7/5 

232 S 5th St
Dupo, IL 62239

Climate Masters Heating and Cooling

User Reviews: 4.7/5 

8027 Big Bend Blvd
Webster Groves, MO 63119

Meyer Heating and Air

User Reviews: 5/5 

11134 Lindbergh Business Ct Suite D
St. Louis, MO 63123

Unique Heating and Cooling

User Reviews: 4.6/5 

2015 Big Bend Blvd
St. Louis, MO 63117

Weis Comfort Systems

User Reviews: 4.6/5 

9900 Gravois Rd Unit 2
St. Louis, MO 63123

Harster Heating & Air Conditioning

User Reviews: 4.6/5 

9900 Gravois Rd
St. Louis, MO 63123

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

AC units after being repaired by a local pro

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Facts about St. Louis
Average Max Temp Percentile:70.8%
August Average Max Temp:88.9°F
Climate Zone:Mixed-Humid
Average Energy Cost:$0.1/kWh
Median Year Houses Built:1963
Average Heat Waves per Year:8.73

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Common Types of Air Conditioners

HVAC technicians have the expertise to service most air conditioner models, but knowing more about what you have can be beneficial. Below, we'll explain each of the common AC types.

  • Split ACs: Split air conditioner units have two main elements: one inside and one outside. They provide quiet operation, greater energy efficiency, ductwork options, and more cooling capability versus mini-splits.
  • Ductless mini-split: Ductless mini-split air conditioners have an exterior unit and multiple interior units, with no ductwork required. They offer individual room temperature control, flexible installation options, and higher energy efficiency.
  • Central AC: These are the most common home air conditioners, offering consistent, precise temperature control. They feature a central unit that cools and purifies outside air and sends it through ducts to various rooms in your home.
  • Window ACs: Window air conditioners are a popular choice for St. Louis condos, townhomes, and apartments. These budget-friendly, convenient units are designed for cooling single rooms and small spaces, and they fit snugly in a window frame or dedicated wall slot. Many window AC users deploy their units without professional assistance, though technicians can still help with maintenance and repairs.
  • Portable air conditioners: As the name suggests, portable air conditioner units don't require permanent installation or ductwork. Instead, they remove hot air through an exhaust hose connected to a window or nearby vent. They're preferred for condos, apartments, or individual rooms.

How to Choose Your St. Louis AC Repair Service

You likely want a swift resolution for your air conditioner's problem. However, before engaging with a repair company, it's important to do careful research to ensure it's the best for your home. Here are a few essential steps to follow.

Confirm the Company Is Properly Licensed and Insured

While Missouri licenses some contractors at the state level, it does not for HVAC companies. Local governments can set their own requirements, and we recommend contacting your town hall or county building department for more information.

You should also confirm a company has sufficient liability insurance coverage, even if your state doesn't require it. Choosing an insured company will protect you if something gets damaged during work.

Read Customer Reviews

Read customer reviews on the Better Business Bureau (BBB) website for each company you're interested in. The BBB recognizes businesses that respond to complaints professionally and honor their warranties.

It's common for even the best AC repair companies to have both positive and negative reviews. Read each one carefully, and avoid a company if most reviewers had subpar experiences.

Compare Estimates

We advise getting at least three different estimates to find the best cost and services. Get a written copy of each quote, and learn more about manufacturer warranties, emergency repair availability, permitting fees and installer guarantees.

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Frequently Asked Questions About AC Repair in St. Louis

What's the cost of an AC repair job in St. Louis?

Your air conditioner repair costs will hinge on the type of unit you have and the malfunctioning part. A basic repair job like sorting out a thermostat might cost $150–$250, whereas a more intricate fix like changing the compressor will be more expensive.

See the average costs for common AC repairs below.

Common RepairAverage Cost
Clogged air filter$65–$173
Electrical circuits$200–$250
Drainage problems$100–$150
Refrigerant leak$400–$1500
Frozen condenser coils$1,295–$3,886
Fan or air blower issues$150–$200
Compressor replacement$600–$1,641

What do I do if my AC is running but not cooling?

If your air conditioner is running but not cooling, a technician will usually check the condenser coil first. Normally, the outdoor unit fans draw air into the coil so the system can extract heat energy from your home. Removing the clog might be all that's necessary to get your AC working again.

Why should I hire an HVAC professional? Couldn't I repair my air conditioner myself?

Yes, it's better to get a new air conditioner professionally installed. Most units use intricate piping and wiring that can confuse even an experienced do-it-yourselfer. They also use refrigerants that could pose serious safety risks if they spill or leak. With their training and equipment, the right technician will set you up for success.

What industry certifications should I look for when researching St. Louis AC repair companies?

Private accreditations might not be required, but businesses that seek them are typically more trustworthy. The two largest HVAC trade bodies that issue certifications are the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) and Air Conditioning Contractors of America (ACCA).

How quickly can an HVAC company in St. Louis respond to emergency repair requests?

Some repair companies offer same-day or next-day service for emergency air conditioner breakdowns. However, the specific timeframe will vary depending on the team's schedule, the terms in your contract, and the severity of the issue. For the most accurate info, we recommend contacting the provider directly and explaining the situation.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.