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5 Best AC Repair Services in St. Louis, MO

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Written By Max Peterson | Last Updated: February 05, 2024

St. Louis homeowners are well-acquainted with the area's strong summertime heat and humid, sticky air making a top-notch 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 companies. These top-rated St. Louis contractors can help you with AC repair or replacement, keeping the job simple, quick, and economical.

Top AC Repair Companies in St. Louis, MO

Vitt Heating & Cooling Logo

Vitt Heating & Cooling

Based on 12,000 customer reviews.

Services Offered

Filtration Inspection Ac Installation Maintenance Furnace Repair Indoor Air Quality Furnace Installation Ac Repair Ductless Duct Cleaning Boiler Installation Boiler Repair


  • Prompt service delivery
  • Reliable customer support
  • Clear pricing policy
4719 Morgan Ford Rd, St. Louis, MO 314-351-5580 vittheating.com
Energy Stars Heating & Cooling Co Logo

Energy Stars Heating & Cooling Co

Based on 758 customer reviews.

Services Offered

Ac Repair Maintenance Duct Cleaning Carbon Monoxide Testing Furnace Repair


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

Seliga Heating and Cooling

Based on 12,000 customer reviews.

Services Offered

Indoor Air Quality Ac Installation Ac Repair


  • Clear pricing policy
  • Reliable customer support
  • Informative resources
6211 Gravois Ave, St. Louis, MO 314-481-7333 seligaheatingandcooling.com
Hoffmann Brothers Logo

Hoffmann Brothers

Based on 91,000 customer reviews.

Services Offered

Ac Installation Inspection Filtration Furnace Repair Maintenance Indoor Air Quality Ac Repair Geothermal Heating Duct Cleaning Ductless


  • Free quote
  • Clear pricing policy
  • Informative resources
1025 Hanley Industrial Ct, Brentwood, MO 314-347-1403 hoffmannbros.com

More Local Hvac Companies

Rhymes Heating & Cooling

User Reviews: 5/5 

10958 Lin Valle Dr
St. Louis, MO 63123

Jersey Heating & Cooling LLC

User Reviews: 4.7/5 

6455 Southwest Ave
St. Louis, MO 63139

Design Aire Heating & Cooling

User Reviews: 4.7/5 

5804 Hampton Ave
St. Louis, MO 63109

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 & 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

Indoor Comfort Team

User Reviews: 4.6/5 

2613 Telegraph Rd
St. Louis, MO 63125

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

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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

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

Common Types of Air Conditioners

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

  • Split ACs: Split ACs have two main elements: one inside and one outside. They provide quiet operation, improved energy efficiency, ductwork options, and more cooling capability versus mini-splits.
  • Ductless mini-split: Ductless mini-splits have an outdoor unit and one or more indoor units, with no ductwork required. They offer flexible installation options, higher energy efficiency, and individual room temperature control.
  • Central AC: These are the most common home air conditioners, offering precise, consistent temperature control. They feature a central unit that cools and purifies outside air and sends it through ducts to different rooms in your home.
  • Window-mounted 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-mounted AC users deploy their units without professional assistance, though technicians can still help with maintenance and repairs.
  • Portable air conditioners: As the name implies, portable ACs 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 a common choice for condos, apartments, or individual rooms.

How to Choose Your St. Louis AC Repair Service

You likely want a quick solution for your air conditioner's problem. However, before hiring a repair company, it's important to carefully investigate how well it fits your home's needs. 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.

Many states and cities also require companies to carry liability insurance. Even if your community doesn't require it, we still recommend choosing an insured company. This will protect you if an accident happens or something gets damaged.

Read Customer Reviews

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

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

Compare Estimates

Obtain at least three detailed, written estimates from different providers for the best value. A good estimate should include additional fees such as permitting costs. You should also ask about manufacturer warranties, the emergency repair process, 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 AC 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 swapping out 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 AC is running but not cooling, a blocked condenser coil could be the culprit. Normally, the AC’s condenser fan draws air into the outdoor unit through the condenser coil to remove heat energy from your home. A technician can help by clearing the clog or replacing a damaged coil.

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

You can most likely install a window AC unit on your own. However, installing other air conditioners should almost always be done by an HVAC contractor who knows the intricate piping, wiring and tubing. We also advise seeking professional installation due to the potential hazard of refrigerant spills.

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).

My HVAC problem is urgent. How quickly could a company respond?

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 company 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.