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Best heating and air conditioning pros near Lake Forest, IL

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TRUSTED BY LAKE FOREST, IL HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1.4k+
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Lake Forest - 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 Lake Forest, IL and surrounding areas

Approved

In business since 1946

Free estimates

Emergency services offered

"We have been happy with All Temp Heating/Air Conditioning Inc.  Then they told us we needed a part, I think the part was like 600 dollars.  So we didn't know what to do.  Originally All Temp had installed the air conditioner.  The reason we didn't use All Temp is because the charge for servicing the air conditioner was more."
Additional Photos
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+2

Response time3 days
Response rate100%
19 neighbors recently requested a quote
Avatar for G & R Heating & Air
G & R Heating & Air
4.6(
139
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+47 more

Serving Lake Forest, 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%
145 neighbors recently requested a quote
Avatar for Mr. Duct, Inc.
Mr. Duct, Inc.
4.6(
1,260
)
Air Ducts & Vents - Clean

Serving Lake Forest, IL and surrounding areas

Approved

In business since 2002

Free estimates

Credit card accepted

"November 2009 - When scheduling a time for the air duct cleaning, we were given an overview of exactly what services would be provided . Two clean cut young men performed the duct cleaning. They were on time, courteous and professional . We received an explanation of all they would do and when they were done, were given recommendations (i.e., change our furnace filter asap). I would definitely recommend this company."
Super Service Award 2020
Super Service Award 2019
Super Service Award 2018
Super Service Award 2017
Super Service Award 2016

+42

Response time7 hrs
Response rate97%
1 neighbors recently requested a quote
Avatar for CR Mechanical Services, LLC
CR Mechanical Services, LLC
4.7(
53
)
Ducts & Vents - Install or ReplaceCentral A/C - InstallDuctless Mini-split A/C - Install or Replace+3 more

Serving Lake Forest, 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
1 neighbors recently requested a quote
Recommended by96%of homeowners
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 Lake Forest, 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%
3 neighbors recently requested a quote
Dr. HVAC Heating and Cooling
4.5(
376
)
Gas Furnace / Forced Air Heating System - Repair

Serving Lake Forest, 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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Heating and Air Conditioning FAQs, answered by experts

There are two main reasons your furnace and AC are turning on at the same time. The first could be that you’re confusing the furnace with the blower. The blower is located in the furnace and will turn on to distribute cool air from the air conditioner through the ductwork in the home. This is normal. If the actual furnace is turning on at the same time as the AC and hot and cool air are coming into the home, it could be a result of incorrect writing to a new thermostat or new systems.

DIY is possible for basic cleaning. Professional services handle advanced maintenance like recharging the refrigerant.

Modern AC leak sealants work as a temporary measure to stop refrigerant leaks. You can purchase them at most home improvement stores or on online. When using an AC leak sealant, keep in mind that it’s only a temporary solution, so you’ll still need to hire a pro to install a replacement part as soon as possible.

HVAC companies may charge an hourly rate or a flat fee. Hourly rates typically range from $100 to $250 per hour, with an average around $175. Some contractors charge a flat fee for specific services, such as an inspection, which can cost between $150 and $500. The total cost of an HVAC service is influenced by several factors, including: the urgency of the service (emergency repairs after hours or on holidays cost more), the time of year, the type, size, and brand of your HVAC system, the specific repair needed, and whether you have a service contract.

Indications of an HVAC problem include inconsistent heating or cooling throughout your home, unpredictable temperature changes, or inadequate air flow from vents. Abnormal sounds such as grinding, banging, or hissing, and unpleasant smells like mustiness or burning are also potential warning signs. A rise in energy costs without an increase in usage may also imply decreased efficiency. An HVAC system that frequently cycles on and off or cannot maintain a stable temperature is malfunctioning.

The Lake Forest, 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.