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AC units after being repaired by a local pro

5 Best AC Repair Services in Lockport, IL

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

The Lockport area is no stranger to heat waves, so your air conditioner needs to work double-duty to keep you healthy and relaxed. To find help tackling AC repairs in Lockport, 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 Lockport providers.

Top AC Repair Companies in Lockport, IL

Zark Heating & Cooling Inc. Logo

Zark Heating & Cooling

Based on 478 customer reviews.

Services Offered

Emergency ServicesRadiant HeatingAc InstallationMaintenanceBoiler InstallationZoning SystemsFiltrationDuctlessFurnace InstallationAc RepairIndoor Air Quality


  • Free quote
  • Reliable customer support
  • Informative resources
14021 W Illinois Hwy, New Lenox, IL 815-324-6211 zarkhvac.com
Update Heating and Cooling Services Logo

Update Heating and Cooling Services

Based on 30 customer reviews.

Services Offered

FiltrationAc InstallationBoiler InstallationDuctlessFurnace RepairMaintenanceRadiant HeatingEmergency ServicesAc RepairInspectionDuct CleaningFurnace InstallationIndoor Air Quality


  • Reliable customer support
  • Informative resources
  • Clear pricing policy
16525 W 159th St, Lockport, IL 815-242-3339 updateheating.com
Custom Seasons Heating & Cooling Logo

Custom Seasons Heating & Cooling

Based on 95 customer reviews.

Services Offered

MaintenanceIndoor Air QualityAc InstallationDuctlessInspectionEmergency ServicesBoiler InstallationVentilationFurnace InstallationAc RepairFiltrationRadiant Heating


  • Clear pricing policy
  • Free quote
  • Reliable customer support
159th Street, S Cedar Rd And, Homer Glen, IL 708-203-4895 customseasons.com
All Temp Heating and Air Conditioning Logo

All Temp Heating and Air Conditioning

Based on 108 customer reviews.

Services Offered

Emergency ServicesAc InstallationFiltrationFurnace RepairFurnace InstallationIndoor Air QualityDuctlessDuct CleaningBoiler InstallationVentilationAc RepairMaintenance


  • Free quote
  • Clear pricing policy
  • Reliable customer support
370 S Bolingbrook Dr, Bolingbrook, IL 866-693-2009 alltemp.com

More Local Hvac Companies

AAA Heating and Cooling Inc

User Reviews: 4.7/5 

400 Main St Suite 300
Lemont, IL 60439

Earth Temp HVAC, Inc.

User Reviews: 4.7/5 

15770 S Bell Rd
Homer Glen, IL 60491

CW Mechanical, LLC

User Reviews: 4.7/5 

1705 Red Maple Dr
Plainfield, IL 60586

Rousculp's Heating and Cooling

User Reviews: 4.7/5 

2551 Theodore St Suite B
Crest Hill, IL 60403

A All Temp Inc. Heating & Cooling

User Reviews: 5/5 

31W154 91st St
Naperville, IL 60564

Winters Heating & Air Conditioning

User Reviews: 4.6/5 

1312 Mc Cameron Ave
Lockport, IL 60441

RCM Heating & Cooling, Inc.

User Reviews: 4.6/5 

1018 Star Ln
New Lenox, IL 60451

Magtek Mechanical Heating & Cooling

User Reviews: 5/5 

21607 S Schoolhouse Rd
New Lenox, IL 60451

Lockwood Furnace Company

User Reviews: 4.5/5 

2300 McDonough St
Joliet, IL 60436

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 Lockport
Average Max Temp Percentile:43.6%
August Average Max Temp:82.0°F
Climate Zone:Cold
Average Energy Cost:$0.13/kWh
Median Year Houses Built:1981
Average Heat Waves per Year:0.58

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

By knowing which type of air conditioner you have, you'll feel more confident in your contractor search. Lockport HVAC professionals have experience with different AC makes and models, and they can adapt their skills to your needs.

  • Ductless mini-split: Ductless mini-split air conditioner units 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.
  • Window-mounted ACs: Window air conditioners are a popular choice for Lockport apartments, condos, and townhomes. 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 air conditioner users install their units without professional assistance, though technicians can still help with maintenance and repairs.
  • Central AC: These are the most common residential AC systems, 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.
  • Portable air conditioners: As the name implies, portable air conditioners 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.
  • Split ACs: Split air conditioner units have two main elements: one indoors and one outdoors. They offer silent operation, improved energy efficiency, ductwork options, and more cooling capability versus mini-splits.

How to Choose Your Lockport AC Repair Service

While you might want to resolve your AC issue quickly, you should do some essential research before committing to a repair service. Take the following steps to ensure you find the top-rated company for your home.

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.

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

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

It's normal for even the best AC repair companies 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 price. A good estimate should include additional fees such as permitting costs. You should also ask about manufacturer warranties, installer guarantees, and the emergency repair process.

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Frequently Asked Questions About AC Repair in Lockport

How much can I expect to pay for AC repair in Lockport?

Your AC unit 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$63–$169
Electrical circuits$200–$250
Drainage problems$100–$150
Refrigerant leak$400–$1500
Frozen condenser coils$1,269–$3,807
Fan or air blower issues$150–$200
Compressor replacement$600–$1,607

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

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

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 complex piping and wiring that can confuse even an experienced do-it-yourselfer. They also use chemical coolants 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 Lockport 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 Lockport 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.