We may be compensated if you purchase through links on our website. Our Reviews Team is committed to delivering honest, objective, and independent reviews on home products and services. More
AC units after being repaired by a local pro

5 Best AC Repair Services in St. Peters, MO

Get matched with a top local pro
Join the 6,755 people who have received a free, no-obligation quote in the last 30 days
  1. Home
  2. Local Pros
  3. AC Repair
  4. MO
  5. St. Peters
Written By Max Peterson|Last Updated: April 18, 2024

Technical malfunctions can be a stressful situation for homeowners who need an air conditioner (AC) repair in St. Peters, especially in the summer when keeping cool is essential. Whether it's simple repairs or a full replacement you need, This Old House recommends starting your AC repair company search with these highly-rated St. Peters providers.

Top AC Repair Companies in St. Peters, MO

Faszold Heating and Cooling Logo

Faszold Heating and Cooling

Based on 816 customer reviews.

Services Offered

Furnace RepairIndoor Air QualityVentilationInspectionFiltrationBoiler InstallationAc RepairAc InstallationMaintenanceEmergency ServicesFurnace InstallationDuctless


  • Reliable customer support
  • Free quote
  • Informative resources
1613 E Terra Ln, O'Fallon, MO 636-735-7842 faszold.com
Swiss Air Heating & Cooling, LLC Logo

Swiss Air Heating & Cooling

Based on 676 customer reviews.

Services Offered

MaintenanceFurnace InstallationAc RepairVentilationEmergency ServicesAc InstallationIndoor Air QualityFiltrationInspectionDuctless


  • Free quote
  • Clear pricing policy
  • Reliable customer support
406 E Wabash St, O'Fallon, MO 636-978-7800 swissairstl.com
Stay Cool Climate Control Logo

Stay Cool Climate Control

Based on 556 customer reviews.

Services Offered

Ac InstallationIndoor Air QualityInspectionZoning SystemsMaintenanceFiltrationFurnace RepairFurnace InstallationAc RepairDuctlessEmergency Services


  • Informative resources
  • Clear pricing policy
  • Prompt service delivery
407 Sonderen St, O'Fallon, MO 636-747-1762 staycool-hvac.com
No Problem Heating and Cooling Logo

No Problem Heating and Cooling

Based on 613 customer reviews.

Services Offered

MaintenanceDuct CleaningIndoor Air QualityDuctlessAc RepairFurnace InstallationAc InstallationInspectionEmergency Services


  • Reliable customer support
  • Informative resources
  • Free quote
1565 Kisker Rd, St Peters, MO 636-400-7776 npmheatingandcooling.com

More Local Hvac Companies

Jerry Kelly Heating & Air Conditioning

User Reviews: 5/5 

4631 N St Peters Pkwy
St Peters, MO 63304

Hoff Heating & AC

User Reviews: 5/5 

1520 Kemmar Ct
O'Fallon, MO 63366

Superior Service

User Reviews: 5/5 

17722 Chesterfield Airport Rd
Chesterfield, MO 63005

Fresh Air Heating & Cooling

User Reviews: 5/5 

612 Spirit Valley E Dr
Chesterfield, MO 63005

Ozark Mechanical

User Reviews: 4.7/5 

2108 Parkway Dr
St Peters, MO 63376

Assured Heating and Cooling

User Reviews: 4.6/5 

400 N 5th St
St Charles, MO 63301

Future Aire Heating & Air Conditioning

User Reviews: 4.7/5 

400 Chesterfield Center #400
Chesterfield, MO 63017

Renaud Brothers Heating & Cooling

User Reviews: 5/5 

3037 Hopewell Rd
Wentzville, MO 63385

Breeze Heating and Cooling

User Reviews: 4.5/5 

1233 Cedar Creek Rd
Chesterfield, MO 63017

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

Get Your AC Repair Project Quote Today

Get matched with a top local pro

Please enter a valid 5-digit zip code!

Facts about St. Peters
Average Max Temp Percentile:69.9%
August Average Max Temp:88.9°F
Climate Zone:Mixed-Humid
Average Energy Cost:$0.1/kWh
Median Year Houses Built:1990
Average Heat Waves per Year:8.15

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

There are a few different kinds of air conditioner units on the St. Peters market. While HVAC professionals can work with most types, knowing which one you have will ease your company hunt.

  • Ductless mini-split: Ductless mini-split air conditioner systems have an exterior unit and one or more indoor units, with no ductwork required. They offer flexible installation options, individual room temperature control, 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 air from outside, purifies it, and sends it through ducts to various rooms in your home.
  • Portable air conditioners: As the name suggests, portable AC systems 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 apartments, condos, or individual rooms.
  • Split ACs: Split air conditioners have two main elements: one indoors and one outdoors. They offer peaceful operation, improved energy efficiency, ductwork options, and more cooling capability versus mini-splits.
  • Window-mounted ACs: Window air conditioners are a popular choice for St. Peters condos, apartments, and townhomes. These compact, affordable 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 air conditioner users set up their units without professional assistance, though technicians can still help with maintenance and repairs.

How to Choose Your St. Peters AC Repair Service

You likely want a quick solution 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 verify a company has sufficient liability insurance coverage, even if your state doesn't require it. Choosing an insured company will protect you if mishaps arise during work.

Read Customer Reviews

Find customer reviews on the Better Business Bureau (BBB) website for each company you're interested in. The BBB accredits contractors that resolve complaints professionally 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 provider if most reviewers had subpar experiences.

Compare Estimates

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

Ready to Get a Quote on Your Hvac Project?

Get matched with a top local pro

Please enter a valid 5-digit zip code!

Frequently Asked Questions About AC Repair in St. Peters

How much can I expect to pay for AC repair in St. Peters?

Your air conditioner repair costs will hinge on your system's make and model 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$62–$165
Electrical circuits$200–$250
Drainage problems$100–$150
Refrigerant leak$400–$1500
Frozen condenser coils$1,236–$3,707
Fan or air blower issues$150–$200
Compressor replacement$600–$1,565

What are some signs that I should call an HVAC repair company?

Here are a few of the frequent AC issues you might face: It's best to contact a professional HVAC technician if you encounter any of these problems.

Does my air conditioner need routine maintenance? If so, how often?

Homeowners should have their AC systems serviced every year to ensure optimal performance. This usually involves cleaning the outdoor unit of brush and debris. Regular servicing can help to maintain the system's efficiency and prolong its lifespan.

What month is best for getting an air conditioner replaced?

The best time to replace HVAC systems is during the off-season, when there's less demand for HVAC technicians and costs are cheaper. With St. Peters' weather patterns, this is usually between late September and the middle of November or early March to mid-May.

Why is my AC 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 cooling again.

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