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5 Best AC Repair Services in Thornton, IL

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

The Thornton area is no stranger to heat waves, so your air conditioner needs to work double-duty to keep you comfortable and secure. To address AC repairs in Thornton, read up on these top-tier local businesses. 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 Thornton providers.

Top AC Repair Companies in Thornton, IL

Merts Heating & Air Conditioning Logo

Merts Heating & Air Conditioning

Based on 1,209 customer reviews.

Services Offered

Ac RepairDuctlessBoiler InstallationMaintenanceFiltrationFurnace RepairAc InstallationRadiant HeatingFurnace InstallationIndoor Air QualityDuct Cleaning


  • Clear pricing policy
  • Reliable customer support
  • Informative resources
3102 Louis Sherman Dr, Steger, IL 833-526-3787 mertsheating.com
Precision Heating and Cooling & PRO Refrigeration Logo

Precision Heating and Cooling & PRO Refrigeration

Based on 502 customer reviews.

Services Offered

MaintenanceIndoor Air QualityEmergency ServicesFurnace InstallationAc RepairInspectionDuctlessAc InstallationFiltration


  • Free quote
  • Reliable customer support
  • Clear pricing policy
12004 S Central Ave, Alsip, IL 708-377-6469 4precision.com
Always Ready HVAC Logo

Always Ready HVAC

Based on 83 customer reviews.

Services Offered

Indoor Air QualityInspectionAc InstallationMaintenanceBoiler InstallationRadiant HeatingEmergency ServicesFiltrationAc RepairFurnace Installation


  • Free quote
  • Clear pricing policy
  • Reliable customer support
15507 S 70th Ct, Orland Park, IL 708-671-0813 alwaysreadyrepair.com
Amber Heating & Air Conditioning Logo

Amber Heating & Air Conditioning

Based on 273 customer reviews.

Services Offered

FiltrationMaintenanceAc RepairDuct CleaningAc InstallationFurnace RepairInspectionSmart Home IntegrationDuctlessBoiler InstallationFurnace InstallationEmergency ServicesIndoor Air Quality


  • Free quote
  • Clear pricing policy
  • Reliable customer support
11950 S Central Ave, Alsip, IL 708-290-1742 amberheatingandair.com

More Local Hvac Companies

Builders Heating And Cooling

User Reviews: 4.5/5 

4633 138th St
Crestwood, IL 60418

South Suburban Heating & Air Conditioning, Inc.

User Reviews: 4.5/5 

2914 Bernice Ave
Lansing, IL 60438

Centsible Heating & Air Conditioning

User Reviews: 4.6/5 

403 N Griffith Blvd
Griffith, IN 46319

Van Drunen Heating & Air Conditioning

User Reviews: 4.5/5 

1440 E 168th St
South Holland, IL 60473

Quality Service Inc.

User Reviews: 4.5/5 

30 E 34th St
Steger, IL 60475

Sun Ray Heating LLC

User Reviews: 4.4/5 

21740 Main St
Matteson, IL 60443

Honest Guys Heating & Cooling

User Reviews: 4.4/5 

1413 East End Ave
South Chicago Heights, IL 60411

Any Season Heating & Air Conditioning

User Reviews: 4.5/5 

7239 Duvan Dr
Tinley Park, IL 60477

Mid-City Heating, Ventilation & Air Conditioning Inc.

User Reviews: 4.7/5 

8156 S Western Ave
Chicago, IL 60620

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 Thornton
Average Max Temp Percentile:39.0%
August Average Max Temp:81.5°F
Climate Zone:Cold
Average Energy Cost:$0.13/kWh
Median Year Houses Built:1962
Average Heat Waves per Year:1.4

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 conditioners on the Thornton market. While HVAC technicians can work with most types, knowing which one you have will streamline your company research.

  • Window ACs: Window air conditioners are a popular choice for Thornton 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 AC users deploy their units without professional assistance, though technicians can still help with maintenance and repairs.
  • Ductless mini-split: Ductless mini-splits have an exterior unit and one or more indoor units, with no ductwork required. They offer flexible installation options, higher energy efficiency, and individual room temperature control.
  • 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 preferred for apartments, condos, or individual rooms.
  • Split ACs: Split ACs have two main elements: one inside and one outside. They provide quiet operation, enhanced efficiency, ductwork options, and more cooling capability versus mini-splits.
  • 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.

How to Choose Your Thornton AC Repair Service

You likely want a quick solution for your air conditioner's problem. However, before signing up 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

There's no state HVAC license in the Land of Lincoln. Instead, cities and counties are free to set their own requirements and regulations. Check with your local building department for more information.

You should also check 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

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

It's common for even the best AC repair providers 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 companies for the best value. A good estimate should list 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 Thornton

What's the cost of an AC repair job in Thornton?

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$64–$172
Electrical circuits$200–$250
Drainage problems$100–$150
Refrigerant leak$400–$1500
Frozen condenser coils$1,286–$3,859
Fan or air blower issues$150–$200
Compressor replacement$600–$1,629

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

It's a good idea to service your air conditioner at least once a year. You can further maximize its efficiency and lifespan by keeping the outdoor unit clear of brush and debris.

Why is my AC running but not cooling?

If your air conditioner is running but not cooling, a contractor 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 blockage might be all that's necessary to get your AC cooling again.

Is hiring an HVAC company better than doing the repair on my own?

Yes, it's better to get a new air conditioner professionally installed. Most units use complicated piping and wiring that could stump even a seasoned 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.

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

The response time can vary by company, but HVAC companies strive to handle emergency repair requests as quickly as possible. A number of companies offer same-day or next-day service for these issues. While a specific timeframe might be listed in your contract, contacting the company directly is best so you can get the most accurate information.

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