4.6 
783 *The Angi rating for Heating And Air Conditioning Service companies in Montgomery, 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 Montgomery, 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 June 15, 2026
Serving Montgomery, 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."
+81
Serving Montgomery, IL and surrounding areas
Approved
In business since 1972
Free estimates
Emergency services offered
"Highly recommend. Found this company last year on Angie's List and this is the second time using them. I was in a pinch as the A/C went out and we have a little baby. I called and they got someone out the same day. Jeff was great...knowledgeable, friendly and answered a lot of questions! Got the unit working again! These are my go-to HVAC guys!"
Serving Montgomery, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Free estimates
Emergency services offered
"professional & courteous service. Explained what they were doing and how to improve my HVAC system"
+1
Serving Montgomery, IL and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"HVAC scheduled tuneup performed as requested perfectly. On time and on budget. Left the areas clean and neat. Perfect! They’re the best."
+1
Serving Montgomery, IL and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1922
Free estimates
Emergency services offered
"Very efficient and clean, explained everything clearly, no issues at all. Will continue to use them for HVAC and plumbing needs!"
Serving Montgomery, IL and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Ish Medellin (Owner) is very professional and knowledgeable. My furnace was running but not blowing hot air. He arrived within the predetermined time slot as promised. Was extremely thorough with explaining the issue (needed maintenance), identified the product that needed to be replaced at a reasonable price. Due to my health condition he recommended a product identified as an Air Scrubber. Itâ s purpose is to remove impurities from the air; and, improve the overall air quality within my home. I would highly recommend contacting this company if you have any HVAC issues. Overall I received amazing customer service. In addition pricing was fair and affordable."
Serving Montgomery, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Emergency services offered
"United HVAC installed new furnace and new central Air and most recently new hot water heater. That being said I trust the company and their technicians they do the job right. Communication and outstanding service from everyone. Extremely happy. Thank you United HVAC."
+25
Serving Montgomery, IL and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
Rest Assured HVAC is open Monday - Friday 8am-5pm (regardless of hours listed on Angi/HomeAdvisor). \n \nWe are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. 24/7 Emergency Service available. \n \nRest Assured HVAC\nElgin, IL 60124\n(847) 224-2420\nhttps://RestAssuredHVAC.com
Serving Montgomery, IL and surrounding areas
Approved (Corporate)
In business since 1911
Free estimates
Emergency services offered
"AWE promptly responded to my work request and kept me informed about my appointment status. Peter came to perform the work. He was very thorough and even discovered that the HVAC contractor on our new home installed 2 furnaces: a current year model as well as a prior year model that was more prone to breakdowns. Provided great information and would definitely hire again. Thanks!"
+10
Serving Montgomery, IL and surrounding areas
Approved
In business since 1976
Free estimates
Credit card accepted
At Energy Services Air Conditioning, Heating & Electrical, we go beyond the level of service you expect, and deliver the exceptional results you deserve. From routine system maintenance, to emergency repair, equipment upgrades and complete system install, our goal is to bring more expertise, resources, and professionalism to every job than any other HVAC service provider in Naperville, Aurora, Geneva, St. Charles & Wheaton IL. We offer flexible solutions for spaces large and small, customizing our designs to meet your exact needs, and providing the most cutting-edge products on the market. Cost is determined by the job. \n
+5
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