🎯 On the Mark Heating & Air is here whenever you need help with your heating, air conditioning, or indoor air quality in Hoffman Estates, Schaumburg, or the surrounding areas.
When you call us, we’ll get to you fast, give you a straightforward evaluation of your HVAC system, then get you the solutions you need ASAP!
Our customers love us because we:
➡️ Value honesty, integrity & treat our customers like family
➡️ Have highly-trained, NATE-certified & friendly technicians
➡️ Offer flexible financing options & upfront pricing
➡️ Have extended warranties & guarantees
➡️ Are community-centered, supporting various non-profits
📞 Call us today for expert HVAC service!
Location
Certified by On The Mark Heating and Air • Jul 05, 2026
Certified by On The Mark Heating and Air • Jul 05, 2026
MondayOpen 24 Hours
TuesdayOpen 24 Hours
WednesdayOpen 24 Hours
ThursdayOpen 24 Hours
FridayOpen 24 Hours
SaturdayOpen 24 Hours
SundayOpen 24 Hours
Reviews
5.0
1,018 reviews
5 stars
1,005
4 stars8
3 stars1
2 stars0
1 star4
DF
Daniel Fowler
6 days ago
5.0
Ryan Mountain from On The Mark was phenomenal at explaining every detail of the work he was completing and how to get the best out of our system during a maintenance and thermostat install visit. Could not recommend On The Mark more, and especially Ryan M.
DP
Dan Post
Jul 2, 2026
5.0
I cannot say enough good things about On The Mark Heating & Air. Our AC stopped working during one of the hottest weeks of the year, and within just a few hours of contacting them, Chris was at our house diagnosing the problem.
Chris was outstanding. Professional, knowledgeable, and clearly an expert in his field. He quickly identified the issue, explained everything in a way that was easy to understand, and had our air conditioning back up and running in no time.
From my initial outreach to the completed repair, the entire process took less than three hours. It's rare to find that level of responsiveness and customer service these days. If you're looking for an HVAC company you can trust, I highly recommend On The Mark Heating & Air, and especially Chris.
BJ
Beom Lee (Jack)
Jun 26, 2026
5.0
On The Mark did a great job with my furnace installation. Everything was explained with detail, I was given multiple affordable plans to choose from, and the installation itself was done very professionally. All of the people I met with were very polite as well. Just wanted to give a shout out to Chris, James, and Carlos, and there was another technician with Carlos, but I did not get their profile messaged to me, but thank you all for the excellent work!
DG
David Akbar Gilliam
Jun 22, 2026
5.0
I was referred to On the Mark Heating and Air by a real estate professional I know who had received excellent service in their own household from On the Mark. On the Mark served my household with equal excellence.
The day the team arrived, they soon faced unexpectedly heavy rains in thunderstorms with lightning and high winds. But they assessed my problem and installed my new AC unit with only a half day weather delay. They also delivered and set up two portable AC units, at no additional charge, to keep our home cool during the delay.
Eight members of the On the Mark team worked to meet this challenge: Elena, James, Omar, Joe, Carlos, Jesse, Chris and Stephanie. All eight worked with courtesy, knowledge, professionalism, positive attitude and persistence. They worked on site at my home, or via phone or text message or email to keep me involved in the process from start to finish and respond to any questions or make any necessary adjustments.
And On the Mark finished with a flourish. As a gesture of thanks, they sent me a soft-side On the Mark insulated lunch bag filled with a dozen delicious homemade-style cookies. Thank you, On the Mark!
JE
Jennifer Engstrom
Jun 22, 2026
5.0
Ryan Mountain was the technician who came to check our central a/c today and provided excellent service. He was friendly, thorough, and took the time to fully explain what was going on with our unit, what was recommended, and options we have to take the next step for repairs. He was empathetic to our financial predicament right now but came up with great suggestions and offers.
Frequently Asked Questions About On The Mark Heating and Air
What services does On The Mark Heating and Air provide?
On The Mark Heating and Air offers heating, air conditioning, and indoor air quality services, including HVAC evaluations and solutions in Hoffman Estates and surrounding areas.
Where is On The Mark Heating and Air located?
It is located at 2200 Stonington Ave, Unit 110, Hoffman Estates, IL 60169.
What are the business hours of On The Mark Heating and Air?
They are open 24 hours a day, 7 days a week, offering around-the-clock service.
How quickly does On The Mark Heating and Air respond to service calls?
They prioritize fast service by providing a prompt evaluation of your HVAC system and delivering solutions as soon as possible.
Does On The Mark Heating and Air offer financing options?
Yes, they offer flexible financing options and upfront pricing to suit customers' needs.
What certifications do the technicians at On The Mark Heating and Air have?
Their technicians are highly trained and NATE-certified, ensuring expert service.
How can I contact On The Mark Heating and Air?
You can call them at +1 847-973-5851 or visit their website at https://onthemarkhvac.com/.
What are some nearby services near On The Mark Heating and Air?
Nearby you can find Trusted Homes Solutions for home services, Abesco Inc. for appliance repair and electronics, and Golden Knots Rug Cleaning for carpet and home cleaning services.
Are there any event photography services near On The Mark Heating and Air?
Yes, Ranka Photography, Angel Michelle Photography, Maureen T. Miller Photography, and The Studio100 provide professional and event photography services nearby.
Which nearby places could help customers visiting On The Mark Heating and Air with insurance or home security?
Customers can visit Amanda Delong - American Family Insurance Agent for health insurance or Euthenics Inc for home security and IT services nearby.
Brand Certified Facts from On The Mark Heating and Air
This information is certified by On The Mark Heating and Air and published from the brand's official system of record. Data is distributed through an enterprise-grade knowledge management platform. Learn more about our data sources
Certified July 05, 2026Yext Knowledge Graph
Address
Categories
Geo coordinates
Legal business name
Hours of operation
Phone number
Official website
Syndication Network
Approved business data is pushed to 100+ publishers, including: