Mon-Clair Heating and Cooling LLC

Top Pro

$80/service call

Estimated price

Select a service

Zip code

Type of heating system

Building height

Heating system problems

Responds in about 15 min

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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 111 times

Serves Millstadt, IL

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

Type of heating system

Heating system problems

No problem, just need maintenance

No heat

Not enough heat

Unusual noises from inside

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

62 reviews

5

98%

4

0%

3

0%

2

0%

1

2%

Read reviews that mention:

Lee E.

Aug 21, 2025

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Hired on Thumbtack

Was very responsive here on the platform, got out to me early, quickly identified and fixed my leak issue and seemed thorough and diligent in the general maintenance I asked for a follow-up. Nice causal but professional experience. Pricing was also on point with what I was quoted by others.

Details: Repair • 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

Cody S.

May 21, 2025

•

Hired on Thumbtack

Details: Repair • The power is on, but the fan won't run • Basement • Outside • House

Central Air Conditioning Repair or Maintenance

Jenna S.

Apr 1, 2025

•

Hired on Thumbtack

Details: New installation • Central heating or cooling • House

Thermostat Installation or Repair

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.