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AC units after being repaired by a local pro

5 Best AC Repair Services in McHenry, IL

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

McHenry residents are well-acquainted with the area's strong summertime heat and dry, dusty air, and will turn to top-notch air conditioners (ACs) to shield them from the heat. If you are in need of AC repairs in McHenry, look no further than the following service providers. Discover McHenry's top HVAC repair and replacement companies, and read further about what your home might need.

Top AC Repair Companies in McHenry, IL

Woodstock Heating & Cooling Logo

Woodstock Heating & Cooling

Based on 531 customer reviews.

Services Offered

Ac RepairBoiler InstallationEmergency ServicesAc InstallationFurnace RepairDuctlessFurnace InstallationMaintenanceIndoor Air Quality


  • Prompt service delivery
  • Clear pricing policy
  • Reliable customer support
333 E Judd St, Woodstock, IL 815-338-0282 woodstockheating.com
All Temp Heating & Air Conditioning, Inc. Logo

All Temp Heating & Air Conditioning

Based on 562 customer reviews.

Services Offered

MaintenanceDuctlessBoiler InstallationVentilationFurnace InstallationFurnace RepairAc RepairAc InstallationEmergency Services


  • Free quote
  • Reliable customer support
  • Prompt service delivery
124 E Liberty St, Wauconda, IL 847-526-9082 alltemp.net
Evolution Mechanical Heating & Cooling- McHenry County, Illinois Logo

Evolution Mechanical Heating & Cooling- McHenry County, Illinois

Based on 37 customer reviews.

Services Offered

Emergency ServicesMaintenanceFurnace InstallationBoiler InstallationAc RepairAc InstallationDuctless


  • Prompt service delivery
  • Informative resources
  • Clear pricing policy
7103 Manor Rd # 1, Crystal Lake, IL 224-600-9326 evolutionmech.com
Combined Services HVAC Logo

Combined Services HVAC

Based on 162 customer reviews.

Services Offered

Furnace RepairDuctlessAc RepairMaintenanceFurnace InstallationIndoor Air QualityAc InstallationEmergency Services


  • Reliable customer support
  • Clear pricing policy
756 Ridgeview Dr, McHenry, IL 815-271-5734 combinedserviceshvac.com

More Local Hvac Companies

McHenry Heating & Air, Inc.

User Reviews: 4.6/5 

1903 State Rte 31
McHenry, IL 60050

Dowe & Wagner, Inc.

User Reviews: 4.5/5 

11215 Commercial St
Richmond, IL 60071

Absolute Comfort

User Reviews: 4.5/5 

60 W Terra Cotta Ave
Crystal Lake, IL 60014

Jetts Heating and Air

User Reviews: 4.5/5 

1306 N Green St
McHenry, IL 60050

American Comfort Solution

User Reviews: 4.7/5 

25179 IL-173
Antioch, IL 60002

V.M. O'Leary Sheet Metal & Heating

User Reviews: 4.6/5 

820 Three Oaks Rd
Cary, IL 60013

Command Service Center, INC

User Reviews: 5/5 

315 Depot St
Antioch, IL 60002

Northern Continental Heating & Cooling, Inc.

User Reviews: 4.5/5 

740 McArdle Dr Unit C
Crystal Lake, IL 60014

Precision Today Plumbing Heating Cooling Electrical (Miller's Area Heating)

User Reviews: 5/5 

112 Center St
Grayslake, IL 60030

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 McHenry
Average Max Temp Percentile:32.0%
August Average Max Temp:80.5°F
Climate Zone:Cold
Average Energy Cost:$0.13/kWh
Median Year Houses Built:1981
Average Heat Waves per Year:0.58

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Common Types of Air Conditioners

There are a few different varieties of HVAC systems on the McHenry 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 AC systems have an exterior unit and one or more indoor units, with no ductwork required. They offer individual room temperature control, flexible installation options, and higher energy efficiency.
  • 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.
  • Split ACs: Split AC units have two main elements: one inside and one outside. They provide silent operation, enhanced efficiency, ductwork options, and more cooling capability versus mini-splits.
  • Window-mounted ACs: Window air conditioners are a popular choice for McHenry apartments, townhomes, and condos. 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.
  • Central AC: These are the most common residential AC systems, offering consistent, precise temperature control. They feature a central unit that cools and purifies outside air and sends it through ducts to different rooms in your home.

How to Choose Your McHenry AC Repair Service

You likely want a swift resolution 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 verify 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

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

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

Compare Estimates

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

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Frequently Asked Questions About AC Repair in McHenry

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

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 switching 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$1,268–$3,804
Fan or air blower issues$150–$200
Compressor replacement$600–$1,606

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

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

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 McHenry's weather patterns, this is usually between late September and the middle of November or early March to mid-May.

What do I do if my AC is 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 clog might be all that's necessary to get your AC working again.

How long is my air conditioner's lifespan? When should I consider a replacement?

You won’t need to buy a new air conditioner for 10–15 years with proper maintenance. As your AC grows older, its mechanical parts might become obsolete. You'll probably need to consider new AC installation if your company can't replace a broken part.

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