Mon-Clair Heating and Cooling

Mon-Clair Heating and Cooling My name is Nick Antonas, owner of Mon-Clair Heating and Cooling. I have 20+ years as a Hvac technician.
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We specialize in Residential and light comercial service and installation.

How we spent our Saturday, rain didn't stop us from making sure our customers are taken care of.
06/14/2026

How we spent our Saturday, rain didn't stop us from making sure our customers are taken care of.

06/11/2026

YOUR WIFE IS HOT!!!
Time to get your AC checked

Call Mon-Clair Heating and Cooling to schedule a routine maintenance check-up.
618-828-0075 IL
314-570-0436 MO

06/10/2026

I have a SMALL favor to ask of my friends!
Go to Mon-Clair Heating and Cooling
Go to the 3 little dots on the side of the page, Hit “invite friends”
Select "invite all" & done‼️
You've SUCCESSFULLY supported my Small Business for $0.00
Your support is appreciated, THANK YOU!!!

Remember to change your filter before the warm summer months set in and cause problems with your system.
06/02/2026

Remember to change your filter before the warm summer months set in and cause problems with your system.

Some of our recent installs we have done here at Mon-Clair heating and cooling. Give use a call if you would like a Free...
05/04/2026

Some of our recent installs we have done here at Mon-Clair heating and cooling. Give use a call if you would like a Free estimate at 618-828-0075.

Give us a call here at Mon-Clair heating and Cooling at 618-828-0075 for your heating and cooling needs.
02/26/2026

Give us a call here at Mon-Clair heating and Cooling at 618-828-0075 for your heating and cooling needs.

https://www.facebook.com/share/16zvLJZRNs/?mibextid=wwXIfr
02/10/2026

https://www.facebook.com/share/16zvLJZRNs/?mibextid=wwXIfr

💙We are so incredibly thankful for the team at Mon-Clair Heating and Cooling for supporting our small business! 💙
It truly means the world when another local company chooses to shop small and trust us with their apparel needs. That kind of support keeps our doors open and our presses running.
It you're looking for a heating and cooling company you can count on, Mon-Clair is the best of the best. Reliable, professional, and always there when you need them — exactly the kind of business our community is lucky to nave.
We appreciate you more than you know.
Thank you for choosing us!

Want to improve air quality in your home ask us here at Mon-Clair heating about a new 4” media filter cabinet for your s...
02/08/2026

Want to improve air quality in your home ask us here at Mon-Clair heating about a new 4” media filter cabinet for your system. Reduce dust and allergens and only change your filter every 6-12 months. Call us at 618-828-0075 in Il and 314-570-0436 in Mo.

Need a new set of gas logs for your fireplace to replace an old existing let us help here at Mon-Clair heating and cooli...
02/06/2026

Need a new set of gas logs for your fireplace to replace an old existing let us help here at Mon-Clair heating and cooling. New gas log assembly with remote control starting at $875 installed. 618-828-0075 in Il 314-570-0436 in Mo.

Some recent reviews from some of our great customers! Thanks for for making this a great year here at Mon-Clair Heating ...
12/25/2025

Some recent reviews from some of our great customers! Thanks for for making this a great year here at Mon-Clair Heating and Cooling!

Address

6054 Triple Lakes Road
Millstadt, IL
62260

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

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