Mon-Clair Heating and Cooling LLC

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About

Hi my Name is Nick Antonas owner of Mon-Clair Heating and Cooling, we are locally owned and operated. I have 20+ years of experiece in the HVAC industry. We are licensed and insured. We believe in doing quality work at an affordable price. We are an American Standard heating and Cooling dealer as well as a Mitsubishi Mini-Split dealer, but we work on all makes. We look forward to serving you for your residential and light commercial heating and cooling needs. We offer 10% off for military/First Responders and 5% off for Senior Citizens.

Overview

Current Top Pro

Hired 96 times

Background checked

License verified

1 employee

2 years in business

Business hours

SunClosedMon8:00 am - 6:00 pm

Payment methods

This pro accepts payments via Cash, Check, Credit card, and Square cash app.

Services offered

Work needed

Install new A/C units

Replace existing A/C units

Remove old A/C units

Install ducts and vents

System type

Split system

Packaged system

Other

Building height

Single-level

Two-story

Three-story

Projects and media

41 photos

Projects and media

41 photos

Reviews

Customers rated this pro highly for professionalism, work quality, and responsiveness.

Excellent 4.9

56 reviews

5

98%

4

0%

3

0%

2

0%

1

2%

Read reviews that mention:

Bill S.

1 month ago

•

Hired on Thumbtack

Details: New installation • Central heating or cooling • House

Thermostat Installation or Repair

Nikki B.

Jul 22, 2025

•

Hired on Thumbtack

Thanks Nick for coming out as fast as you did. You completed the job in good timing. Thanks so much for installing the new a/c unit. Good reasonable price.

Details: Repair • Outside • Outside • House

Central Air Conditioning Repair or Maintenance

P J.

Jul 20, 2025

•

Hired on Thumbtack

Was very responsive to my inquiry about getting a new condenser and coil setup for my mom. Came out, got to the house early, and got us a quote that is about average for what needed to be done. After that, a couple of days later, let me know he'd obtained the new unit. The next day, he came out and installed everything. Installation was done very well. Couldn't be happier with how it all turned out. It's hard to find good, honest companies out here, but Mont-Clair is definitely high on my list. Word of mouth, even on here, does wonders for a small business, and I'd definitely refer him to anyone else that has HVAC needs!

Details: Repair • Only warm air is blowing from the vents • Basement • Outside • House

Central Air Conditioning Repair or Maintenance

Andrea F.

Jun 9, 2025

•

Hired on Thumbtack

Details: Outside • Outside • House

Central Air Conditioning Repair or Maintenance

Jeffrey P.

Jun 6, 2025

•

Hired on Thumbtack

Details: Repair • Only warm air is blowing from the vents • Basement • Outside • House

Central Air Conditioning Repair or Maintenance

Credentials

License

License type: HVAC

License region: St. Louis, MO

License verified on 1/28/2025

Background Check

Nicholas Antonas

FAQs

What should the customer know about your pricing (e.g., discounts, fees)?
We charge an $90 service call fee to diagnose your issue. Parts and labor are extra. Standard 1" filter replacement is $10. We offer a 10% discount for Military and First Responders. We also offer a 5% discount for Senior citizens.
What is your typical process for working with a new customer?
We call the customer and set up an appointment for a 2 hour time block that meets their and our availability.
What education and/or training do you have that relates to your work?
I have a HVAC certificate from Jefferson College in Hillsboro MO which i received in the year 2000. I also carry a St. Louis County and City Journeyman's License.