4.6 
783 *The Angi rating for Heating And Air Conditioning Service companies in Boulder Hill, 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 Boulder Hill, 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 30, 2026
Serving Boulder Hill, 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 Boulder Hill, 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 Boulder Hill, 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."
+1
Serving Boulder Hill, IL and surrounding areas
Approved (Corporate)
In business since 1992
Emergency services offered
Warranties offered
Precision Today is a trusted multi-trade contractor with a expert technicians specializing in HVAC services for residential properties. We deliver fast, safe, and reliable solutions—backed by same-day service.\n\nOur HVAC services include heating and cooling system installation, furnace and AC repair, seasonal maintenance, ductwork services, thermostat upgrades, and energy-efficient system replacements. Whether you need a quick repair or a full system upgrade, our technicians work with precision and attention to detail to keep your home or business comfortable year-round.\n\nWith locations in Carol Stream, West Chicago, Grayslake, Palatine, Franklin Park, and Naperville, we provide efficient coverage across the surrounding Chicago suburbs—allowing us to respond quickly and keep your project moving.\n\nIf you’re looking for a responsive, professional contractor who prioritizes safety, speed, and quality, Precision Today is ready to help—often the same day you call.
+49
Serving Boulder Hill, 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 Boulder Hill, 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 Boulder Hill, IL and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"This was our first time needing an HVAC service for our house (AC unit issues) and Ish, Nick and Genaro did a fantastic job! I met with Ish first to diagnose the problem. He is super knowledgeable and was able to answer all my questions confidently and thoroughly. He was honest in explaining our options for our budget. He gave me estimates for multiple different scenarios I asked for and I never felt pushed into the more expensive option (and I am typically quite a skeptic when it comes to these types of things)! He also really took his time while at my house. I didnâ  t feel like I was rushed or that my questions were a bother to him. We decided to replace our whole unit and him and his team were able to come back just three days later! The install was smooth, they cleaned up all the work areas really well, and the whole team is very personable (and dog friendly, which I appreciate)! Overall, our experience was the best case scenario, and we will be using Ish and his team for all our future AC/Furnace maintenance!"
Serving Boulder Hill, 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 Boulder Hill, 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 Boulder Hill, 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!"
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