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AC units after being repaired by a local pro

5 Best AC Repair Services in Grafton, IL

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

Grafton residents are well-acquainted with the area's strong summertime heat and dry, dusty air making a well-oiled air conditioner (AC) key for your safety and comfort in the summer months. If you are in need of AC repairs in Grafton, look no further than the following companies. Begin your AC repair company search with these respected Grafton providers, and learn more about replacing your AC and future-proofing your home with this useful guide.

Top AC Repair Companies in Grafton, IL

Harmonic Heating, Air Conditioning & Plumbing, previously Official Heating & Cooling Logo

Harmonic Heating, Air Conditioning & Plumbing, previously Official Heating & Cooling

Based on 363 customer reviews.

Services Offered

Ac RepairIndoor Air QualityEmergency ServicesFurnace InstallationAc InstallationMaintenanceDuctlessFurnace Repair


  • Free quote
  • Clear pricing policy
  • Informative resources
5214 S Illinois Rte 31, Crystal Lake, IL 800-350-4822 officialhvac.com
Woodstock Heating & Cooling Logo

Woodstock Heating & Cooling

Based on 531 customer reviews.

Services Offered

MaintenanceAc InstallationIndoor Air QualityBoiler InstallationFurnace InstallationDuctlessEmergency ServicesFurnace RepairAc Repair


  • Clear pricing policy
  • Prompt service delivery
  • Reliable customer support
333 E Judd St, Woodstock, IL 815-338-0282 woodstockheating.com
Climate Control Services LLC Logo

Climate Control Services

Based on 506 customer reviews.

Services Offered

Ac RepairIndoor Air QualityFurnace RepairFiltrationAc InstallationDuct CleaningMaintenanceInspectionFurnace InstallationEmergency Services


  • Reliable customer support
  • Free quote
  • Clear pricing policy
13n085 Coombs Rd Unit D, Elgin, IL 630-906-9768 climatecontrolservices.net
Leith Heating and Cooling Inc. Logo

Leith Heating and Cooling

Based on 594 customer reviews.

Services Offered

FiltrationDuctlessFurnace RepairAc InstallationFurnace InstallationIndoor Air QualityAc RepairMaintenance


  • Clear pricing policy
  • Informative resources
  • Reliable customer support
2587 Millennium Dr Unit J, Elgin, IL 224-509-9861 leith-hvac.com

More Local Hvac Companies

R&R Climate Inc

User Reviews: 4.7/5 

17455 Jefferson St
Union, IL 60180

Evolution Mechanical Heating & Cooling- McHenry County, Illinois

User Reviews: 4.7/5 

7103 Manor Rd # 1
Crystal Lake, IL 60014

Air Blue Heating and Cooling

User Reviews: 4.7/5 

1154 N Main St Unit D
Algonquin, IL 60102

TEM Control HVAC Inc.

User Reviews: 4.7/5 

1445 Geringer Rd
Algonquin, IL 60102

Shadow Heating and Cooling

User Reviews: 4.7/5 

334 E Grove
Hampshire, IL 60140


User Reviews: 4.7/5 

9 Michigan Ave
East Dundee, IL 60118

One Call Heating & Cooling

User Reviews: 4.7/5 

707 W Main St
West Dundee, IL 60118

Advantage Heating & Cooling

User Reviews: 5/5 

1750 Todd Farm Dr STE D
Elgin, IL 60123

Tempco Heating & Air Conditioning

User Reviews: 4.6/5 

2511 Technology Dr #101
Elgin, IL 60124

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 Grafton
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:1990
Average Heat Waves per Year:0.58

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Common Types of Air Conditioners

There are a few different types of HVAC systems on the Grafton market. While HVAC professionals can work with most types, knowing which one you have will ease your company search.

  • Window-mounted ACs: Window air conditioners are a popular choice for Grafton 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 air conditioner users set up their units without professional assistance, though technicians can still help with maintenance and repairs.
  • Portable air conditioners: As the name hints, portable AC 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 apartments, condos, or individual rooms.
  • Split ACs: Split air conditioner systems have two main elements: one inside and one outside. They offer peaceful operation, improved energy efficiency, ductwork options, and more cooling capability versus mini-splits.
  • Ductless mini-split: Ductless mini-split AC systems have an outdoor unit and multiple interior units, with no ductwork required. They offer higher energy efficiency, individual room temperature control, and flexible installation options.
  • 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 various rooms in your home.

How to Choose Your Grafton 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 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

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 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

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

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

Compare Estimates

We recommend getting three or more estimates to find the best pricing and offerings. Get a written copy of each quote, and learn more about permitting fees, manufacturer warranties, emergency repair availability and installer guarantees.

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Frequently Asked Questions About AC Repair in Grafton

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

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$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 once a year. You can further maximize its lifespan and efficiency 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 Grafton'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 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 defective coil.

Should my HVAC company have a private accreditation?

Private accreditations might not be required, but contractors 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).

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