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4.5

(393 reviews)

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

*The Angi rating for Heating And Air Conditioning Service companies in Markham, 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 Markham, 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 January 18, 2026

Find Heating and air conditioning pros in Markham

Avatar for Porterhouse Heating & Cooling
Porterhouse Heating & Cooling
4.8(
217
)

Serving Markham, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Porterhouse Heating and Cooling was very professional and knowledgeable on the service provided. I used them to install my air conditioner unit. Eventhough, the unit was not my issue, they still came out and was able to find the issue and fix it. They were friendly, professional, and reasonably priced. I will definitely use again for any of my HVAC concerns."
Work truck
Certification
Business card
Response time9 hrs
17 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Viewtech Electrical
Viewtech Electrical
4.6(
193
)

Serving Markham, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1998

Emergency services offered

Warranties offered

"Amer completed the electrical work successfully. He is a real Pro with a courteous and service oriented approach. The quality of Amer’s work is superb. I will utilize Amer for all of my electrical and HVAC work in the future; and would highly recommend him to anyone who has a need for his service."
Viewtech
Viewtech
electric
electrical panels downtown chicago hotel
Home

+9

Response time4 hrs
Response rate87%
74 neighbors recently requested a quote
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Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,280
)

Serving Markham, 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
28 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for LOWE'S Air Duct Cleaning Inc. -- Unlimited Vents
LOWE'S Air Duct Cleaning Inc. -- Unlimited Vents
4.6(
159
)

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."
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+30

Response time9 hrs
Response rate98%
14 neighbors recently requested a quote
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Avatar for R&J Preventative Maintenance
R&J Preventative Maintenance
4.9(
31
)

Serving Markham, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Emergency services offered

Warranties offered

"I needed the refrigerant in my HVAC system refilled and Juliano and Richard were quick to respond and very professional. They inspected the system and completed the job in one day. Very satisfied with work performed."
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+6

1 neighbors recently requested a quote
Recommended by70%of homeowners
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Avatar for NSB Service Tech
NSB Service Tech
4.7(
40
)

Serving Markham, IL and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

We are a licensed professional heating & cooling company that take great pride in providing a comfort and quality service to our customers at a fair price. It is our mission to provide excellent skill and workmanship to complete customer satisfaction from start to finish of a project. With our trained certified technicians we are well equipped to provide a high quality service

Recommended by97%of homeowners
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Avatar for Adams Carpet Care
Adams Carpet Care
4.9(
81
)

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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Discovery Heating & Cooling, Inc.
4.6(
80
)

Serving Markham, IL and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"My AC died on me in the middle of the night, so I texted them instead, using the Home Advisor App...They responded before I had my first cup of coffee in the morning! They sent out Art to help me shortly after hanging up... WOW !!! Art knew right away the problem and went to his truck for the part, and it was fixed in minutes. Even before the HOT SUN started to bake my house... I am extremely grateful. They now have me as a permanent customer for both my central air and heating systems... I highly recommend it."
Response time8 hrs
1 neighbors recently requested a quote
Recommended by87%of homeowners
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Showing 1-10 of 691
Heating and Air Conditioning questions, answered by experts

While Freon is mostly odorless, a Freon leak will produce a faint chloroform-like smell. Some people find that Freon's odor has a subtle sweetness to it. Some telltale signs of a Freon leak beyond odor include ice crystals on your evaporator coil, bubbling sounds, and hissing noises.  

While your AC unit may still run even if its capacitor is going bad, doing so takes a lot more energy, so it can drive up your electric bill and cause further damage to your AC unit’s parts. If you suspect a bad capacitor, it’s important to have a professional diagnose and fix the problem before you continue to run your AC.

If your AC runs constantly, it could be due to a number of things, including a faulty thermostat, incorrect temperature settings, or broken equipment. Alternatively, you might have an airflow problem (for example, blocked vents or leaky ductwork). Either way, an HVAC pro can identify the specific problem and fix it for you.

While most air conditioners can last between 10 and 20 years, they will only last this long (or longer) if properly taken care of. Routine maintenance and inspections help keep your AC unit running in tip-top shape but understanding what factors will decrease its lifespan will also help keep your unit running cool.

Some things that shorten your AC’s lifespan include:

  • Extreme outdoor conditions, like high humidity or extensive salt spray 

  • Improper installation

  • Extended run times, either by the unit being too small or the thermostat setting too low

  • Not performing required maintenance

Yes, you can potentially save $60 to $200 by handling your own air conditioner capacitor installation. However, capacitor replacement comes with the risk of electric shock. Only attempt this if you have the knowledge and protective gear to carry it out safely. Otherwise, we recommend hiring an HVAC pro with the experience to properly diagnose the issue and avoid damaging other parts of your AC unit.

The Markham, 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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