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Verified Reviews for Air Conditioning pros in Markham, IL

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

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

Last update on September 07, 2026

Find Air conditioning pros in Markham

Avatar for Porterhouse Heating & Cooling
Porterhouse Heating & Cooling
4.8(
218
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Markham, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Repairing Central Air Conditioning System"
Work truck
Certification
Business card
Response time9 hrs
19 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Mr Duct Chicagoland
Mr Duct Chicagoland
4.8(
863
)
Central A/C - InstallAir Ducts & Vents - CleanCentral A/C - Service or Repair

Serving Markham, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"I have used Mr Duct for air ducts and vent cleaning for several years.They consistently provide great service at a reasonable price."
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 Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,297
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Markham, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"We had a great experience with Four Seasons Heating & Air Conditioning during our recent replacement of our furnace and AC unit. They were very professional and completed the job on time and answered all of my questions. Would recommend them for our Heating, Air Conditioning, Plumbing and Electrical needs."
Additional Photos
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Response time9 hrs
35 neighbors recently requested a quote
Recommended by86%of homeowners
Request Quote
Avatar for Viewtech Electrical
Viewtech Electrical
4.6(
195
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+4 more

Serving Markham, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1998

Emergency services offered

Warranties offered

"I went from one outlet to three & from a floor cluttered with electrical cords to a clean space. Amir suggested additional outlets because I had created a fire hazard by using a multiple outlet power surger which probably caused the outlet & the power surger to blow out during a storm."
Viewtech
Viewtech
electric
electrical panels downtown chicago hotel
Home

+9

Response time4 hrs
Response rate87%
45 neighbors recently requested a quote
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Avatar for LOWE'S Air Duct Cleaning Inc. -- Unlimited Vents
LOWE'S Air Duct Cleaning Inc. -- Unlimited Vents
4.6(
163
)
Air Ducts & Vents - Clean

Serving Markham, IL and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"For DC/ Northern VA: Best price in the area. Very methodical, evaluated the ducts as he worked, very knowledgeable. Dryer duct cleaned as well. Showed up 2 hrs late, so ensure you have a full day for the job to be completed."
Additional Photos
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+30

Response time9 hrs
Response rate100%
9 neighbors recently requested a quote
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Avatar for Improved Comfort Heating & Air Conditioning
Improved Comfort Heating & Air Conditioning
5.0(
9
)
Central A/C - Install

Serving Markham, IL and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"I had an excellent experience with this HVAC company! They installed 3 central A/C units in my building, and everything was done professionally and efficiently. Special thanks to Angel and Martin for their great work, professionalism, and attention to detail. Highly recommend!"
Boiler Replacement
Response time9 hrs
Response rate87%
21 neighbors recently requested a quote
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Avatar for R&J Preventative Maintenance
R&J Preventative Maintenance
4.9(
38
)
Central A/C - Service or Repair

Serving Markham, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Emergency services offered

Warranties offered

We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today! \n

Additional Photos
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+6

1 neighbors recently requested a quote
Recommended by57%of homeowners
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Avatar for Adams Carpet Care
Adams Carpet Care
4.9(
81
)
Air Ducts & Vents - Clean

Serving Markham, IL and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

Adams Carpet Care is a small family owned local company. We take pride in servicing your home. We won't leave the property until our customers are 100% satisfied! Our price includes a rotary scrub spot clean to your carpet before the steam clean, and the moving and protection of your basic furniture. We also offer detail edge cleaning, pet odor removal, Oriental and area rug cleaning. upholstery cleaning. WE ARE NOW ALSO OFFERING WINDOW AND GUTTER CLEANING. call today for a free estimate. \n847-212-5729

Work Vehicle
Equipment
Stairs
Stairs
Before

+24

Response time1 day
Response rate92%
Recommended by98%of homeowners
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Avatar for NSB Service Tech
NSB Service Tech
4.7(
51
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Markham, IL and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"My service tech Marvin got my air back working when it went out on those very hot days and for a really good price!!"
Heating & cooling
Heating & cooling
Heating & cooling
Heating & cooling
Heating & cooling

+24

3 neighbors recently requested a quote
Recommended by81%of homeowners
Request Quote
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Air Conditioning questions, answered by experts

Yes. Return air vents are responsible for gathering and pulling in the warmer air. Once they draw it in, your system conditions the air by removing the warmer molecules from it, allowing your air conditioner to dispense the cooler air back into your home. Not only does this create a more comfortable environment for you, but it also keeps your air conditioner from overworking, resulting in lower energy bills. 

To keep your air conditioner in good working condition, you should have it serviced by a professional at least once per year, ideally in the spring before the cooling season begins. If your AC unit is 10 years or older, consider servicing it twice a year (once in the spring and once in the fall) to catch potential problems early and help it reach its full lifespan. During a service visit, a technician will inspect, clean, and replace parts as needed. Regular maintenance helps avoid costly repairs. As a DIY task, you can also clean the evaporator coils annually.

Not if you have a standard unit. Because portable AC units actually work to dehumidify the room, you’ll likely need to drain the unit from time to time—but you won’t have to put water into it. There is, however, another type of air conditioner called a swamp cooler that requires water to operate. If you have a swamp cooler, you may need to fill a reservoir with water and potentially ice. But a swamp cooler is different from a standard portable AC unit.

NATE (North American Technician Excellence) certification is not legally required for HVAC technicians in most areas, but hiring a professional with this certification is highly recommended. NATE-certified technicians demonstrated their expertise and proficiency in different types of HVAC systems, offering assurance of quality service. It's a voluntary certification, yet it indicates a commitment to professionalism and ongoing training. Choosing a NATE-certified technician often means you're working with someone who is up-to-date on industry standards and best practices, which can lead to better service, energy efficiency, and long-term cost savings.

To keep a window air conditioner in good working order, you should clean the filter regularly, inspect the seals, and store the unit properly during the off-season.

The Markham, IL homeowners’ guide to air conditioning services

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

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