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TRUSTED BY GRAYSLAKE, IL HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon1.6k+
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Grayslake, IL

*The Angi rating for Heating And Air Conditioning Service companies in Grayslake, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Grayslake, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on December 21, 2024

Top-Rated Heating and air conditioning pros in Grayslake - Updated Nov 2026

Avatar for All Temp Heating & Air Conditioning Inc
All Temp Heating & Air Conditioning Inc
4.6(
433
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+18 more

Serving Grayslake, IL and surrounding areas

Approved

In business since 1946

Free estimates

Emergency services offered

"This was our second call to All Temp for service. Mike was our technician and he is very knowledgeable and professional. He gave some good advice on cooling our house, what to look for in the HVAC system in a new house (we are looking), and didn't try to up-sell me on things we didn't need. He was quick with his assessment and work. We'll be calling them again if we have HVAC issues."
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+2

Response time3 days
Response rate100%
13 neighbors recently requested a quote
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Avatar for Mr Duct Chicagoland
Mr Duct Chicagoland
4.8(
863
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallAir Ducts & Vents - Clean+2 more

Serving Grayslake, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"The technician did a very good job cleaning the hvac ducts."
Residential Air Duct Cleaning
Mr. Duct trucks parked outside of a commercial air duct cleaning job site in Chicago.
A dryer vent before being cleaned by Mr. Duct.
A Mr. Duct technician cleaning a dryer vent at a pet salon
A Mr. Duct technician cleaning a furnace

+81

Response time1 day
24 neighbors recently requested a quote
Recommended by90%of homeowners
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Avatar for G & R Heating & Air
G & R Heating & Air
4.6(
139
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+47 more

Serving Grayslake, IL and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"HVAC machine outside wasn’t working. Ricardo ? was so good at explaining & suggesting his expert ideas. There was a mouse & nest inside the machine & wires were severed. He removed the critter & nest & repaired the wires. All is working again. What a great guy he is!!"
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+20

Response time11 hrs
Response rate100%
136 neighbors recently requested a quote
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Avatar for CR Mechanical Services, LLC
CR Mechanical Services, LLC
4.7(
53
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceDucts & Vents - Install or Replace+3 more

Serving Grayslake, IL and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"In May of 2021, CR Mechanical replaced our HVAC equipment (furnace and AC), and installed a new air scrubber and an ecobee thermostat. We were very satisfied with their work (exceeded expectations), and Craig is an excellent installer (that was most important to us). The ecobee was defective out of the box, and he reinstalled our old thermostat and was back the next day (as promised) to install a replacement ecobee. Everything works great."
Office furnace
Furnace for office
Office ac coil with damper
Shah furnace
Shah furnace

+8

Response time6 hrs
Recommended by96%of homeowners
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Avatar for G & R Heating and Air, LLC
G & R Heating and Air, LLC
4.6(
1,162
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairThermostat - Install or Replace+5 more

Serving Grayslake, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"I found my go to guys for HVAC. Jeremy was great. Fast, efficient and explained everything. Reasonable prices and watch for their specials. I trust them."
New 16 seer A/C
Old A/C
Old furnace
New Furnace
Water heater Installation

+1

Response time2 hrs
Response rate91%
202 neighbors recently requested a quote
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Avatar for Phoenix HVAC, LLC
Phoenix HVAC, LLC
4.8(
64
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+11 more

Serving Grayslake, IL and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I needed a new HVAC. I received a prompt bid at an extremely favorable price. The technicians who installed my new unit were extremely knowledgeable and personable! They finished the job in one day, even though they had estimated it would take two whole days. They cleaned up after themselves in a marvelous way."
Staging and Wrapping Ductwork
Staging and Wrapping Duct Work
Installation
OUR WORK
OUR WORK

+21

Response time9 hrs
Response rate92%
4 neighbors recently requested a quote
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Avatar for Cahill Heating, Cooling, Electric, Plumbing & Sewer
Cahill Heating, Cooling, Electric, Plumbing & Sewer
4.8(
33
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+47 more

Serving Grayslake, IL and surrounding areas

Approved

In business since 1973

Free estimates

Emergency services offered

"They've put in a new furnace, water heater, AC, etc. They are very reliable, but not inexpensive. Everything they do is quality and they only work with quality people. I had a problem with the air compressor on our AC right after the warranty had expired. Cahill said that they work with that company all the time and that part shouldn't have gone out that quick. They said they would talk to the company and see that it is made right, and they did."
Furnace Installations
Heat Pump Installations
Furnace Installations
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+7

Response time8 hrs
11 neighbors recently requested a quote
Recommended by90%of homeowners
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Dr. HVAC Heating and Cooling
4.5(
376
)
Gas Furnace / Forced Air Heating System - Repair

Serving Grayslake, IL and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

Dr. HVAC has been in business for 31 years, owned and operated by Steve Rokkas. Steve is personally involved with every project to insure complete customer satisfaction. If you are in need of a full-service HVAC contractor, call Dr. HVAC for reliable, speedy installation at the best prices in the Skokie, IL area. If you are looking for duct work or heating services call Dr. HVAC for the best customer service in the area. Contact us today!\nAll equipment comes with 5 yr part customer has to register for 10yrs parts

Recommended by92%of homeowners
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Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,297
)
Central A/C - InstallDucts & Vents - Install or ReplaceGas Furnace / Forced Air Heating System - Install+47 more

Serving Grayslake, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"Everyone from the sales person to installers were great. I love our new HVAC system!"
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Response time9 hrs
35 neighbors recently requested a quote
Recommended by86%of homeowners
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Showing 1-10 of 562
Heating and Air Conditioning FAQs, answered by experts

If you’re shopping around for a rooftop AC unit, you may hear them referred to as “package units.” That’s because rooftop AC systems are all-in-one heating and cooling units that connect directly to your home’s ductwork. If your AC repair pro references a package unit, they are referring to the system on your roof.

While many states do not have specific licensing requirements for HVAC companies, your local city or county might. It's always a good idea to check local requirements online and use a tool like Angi’s contractor license lookup to confirm that the company you’re considering is licensed. Regardless of licensing, you should always ensure the company you hire is fully insured to avoid potential lawsuits if a technician is injured on your property. Additionally, it is recommended to check if the company holds third-party certifications, such as North American Technician Excellence (NATE) certification or R-410A certification, which qualifies them to work with HVAC refrigerants.

To reset your air conditioner, start by turning it off at the thermostat. Then, shut off power to the AC system at the circuit breaker. Some units have a dedicated "reset" button; if yours does, press and hold it for three to five seconds. If your air conditioner doesn't have a reset button, or if you are resetting it after a power outage, leave the circuit breaker off for at least 30 minutes to allow the system to reset itself. Afterward, turn the power back on at the breaker, turn on the AC from the thermostat, and set it to "cool" to test the system.

Signs of a damaged evaporator coil include warm air from vents, frequent starts and stops without proper cooling, failure to turn on, refrigerant leaks, and unusual noises. If you suspect issues with your AC system or its components, it’s best to call an AC repair technician for proper diagnosis and repairs.

The compressor is the heart of your AC system and is one of the most important parts required to keep it functioning properly. If your AC unit is making a popping, banging, clanging, clicking, or screeching sound, it could point to a problem with the compressor. If the unit is physically vibrating, that can also be an indication that your AC compressor is going bad.

The Grayslake, IL homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

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