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Mount Prospect HVAC Services

For nearly 30 years, TDH Mechanical has been a trusted provider of Mount Prospect HVAC services. Not only are we Chicagoland’s largest HVAC contractor, but we’re also proud to be known as Chicagoland’s Most Trusted Trane dealer! We’re committed to ensuring that your home stays comfortable and safe, year-round.

  • Mount Prospect Air Conditioning Install & Repair
  • Mount Prospect Heating/Furnace Install & Repair
  • Mount Prospect Indoor Air Quality

Mount Prospect Air Conditioning

As your Mount Prospect Illinois air conditioning company, you can count on us for fast, affordable air conditioning installation and repair services. No matter what make and model you own, we have the techs, tools, and training to repair your AC unit. Need a new air conditioning unit? We offer the industries top Trane air conditioners to keep your home protected from the heat.

Mount Prospect Heating

Looking to prepare your home for the cold months ahead? At TDH Mechanical, we deliver reliable Mount Prospect HVAC services that include industry-leading Arlington Heights heating systems. Our installations are quick, ensuring that your home never goes long without heating. We also offer same-day service for repairs on furnaces and heaters to help you stay comfortable year-round.

Mount Prospect Indoor Air Quality

Your Mount Prospect indoor air quality is an important maintenance aspect of your home that is often overlooked. From minor allergens to serious hazards, your air ducts can collect years’ worth of dust, mold, and debris. That’s why we offer several solutions to keep your Arlington Heights’s home air quality as clean as possible—at a price you can afford.

Schedule HVAC Services in Mount Prospect

When your Mount Prospect home needs heating, cooling, or ventilation service, go to the one-stop source you can rely on for top-quality service every time. Choose TDH Mechanical and get the AC and furnace maintenance and installation solutions you need at a price you can afford. Give our friendly team a call to learn more, or fill out our online form to schedule your free quote today!

Our Services

ac diagnostic
Air Conditioners

We can handle all your AC needs, from repair and maintenance, to installation, and more.

furnace tune-up

Keep your furnace running smootly, or get a new one installed. Either way, we've got you covered.

boiler and water heater
Boilers & Water Heaters

Whatever boiler system is used in your home or business, it is important to keep it running efficiently.

clean indoor air
Air Duct Cleaning

Reputable and professional duct cleaning does make a difference in your indoor air quality!

duct cleaning
Air Quality

If people inside your home have allergies or respiratory issues, cleaning up the air will help.

commercial services

If you are a property manager, you know how important it is to keep the heating & cooling systems running smoothly.


What sets us apart from other HVAC companies?

  • We have been around since 1985, and have over 30 years of experience.
  • We serve over 200 towns throughout the Chicago area.
  • Our team is NATE and EPA certified, and comply with industry codes and standards.
  • We do not subcontract our work to third parties. Your technician is a full-time professional at TDH Mechanical, handpicked by Tim himself.
  • We have a team of loyal professionals, some of whom have been with us for several years. This results in dedicated experts who are interested in building long term relationships with our customers.
  • We are authorized Trane dealers and offer the Trane Satisfaction Guarantee.
  • Top notch, truly personalized service from start to finish. No matter the extent of the job.

There is no problem too small or overwhelming for our team to tackle. We treat each and every service call with the same level of urgency, whether it’s a new furnace installation or air duct cleaning. All of our technicians carry a customer-first mindset, allowing you to benefit from unparalleled workmanship and a close attention to detail. Our goal is the same as yours: to help you experience a truly comfortable home environment without unexpected interruptions from your heating and cooling system.

Mount Prospect, Illinois

Mount Prospect is located at 42°3'56?N 87°56'10?W? / ?42.06556°N 87.93611°W? / 42.06556; -87.93611 (42.065427, -87.936217).

According to the 2010 census, Mount Prospect has a total area of 10.374 square miles (26.87 km2), of which 10.34 square miles (26.78 km2) (or 99.67%) is land and 0.034 square miles (0.09 km2) (or 0.33%) is water.

Recent Jobs and Reviews in Mount Prospect, IL

Rated 5.0 out of 5 stars based on 1 customer reviews


Excellent service, prompt and quick!
Slawomir - Mount Prospect, IL 60056

Job Locations

Rolando C.
Rolando C.
No cool
Mount Prospect, IL 60056
Rolando C.
Rolando C.
Ac start up
Mount Prospect, IL 60056
Wally W.
Wally W.
Tdh install new Trane furnace ac coil, ecobee thermostat, aprilaire media filter.
Mount Prospect, IL 60056
Mount Prospect, IL - Tdh install new Trane furnace ac coil, ecobee thermostat, aprilaire media filter.
Wally W.
Wally W.
Estimate for new furnace ac and coil
Mount Prospect, IL 60056
Mount Prospect, IL - Estimate for new furnace ac and coil
Rolando C.
Rolando C.
Furnace making noise
Mount Prospect, IL 60056
Kris S.
Kris S.
New inducer S/C
Mount Prospect, IL 60056
Mount Prospect, IL - New inducer S/C
Rolando C.
Rolando C.
Maintenance on furnace
Mount Prospect, IL 60056
Serving the St. Charles Area
Monday - Friday: 8:00am - 5:00pm
Call Us Today for Service
Chicago Location
1623 W Montrose Ave
Chicago, IL 60613
St Charles Location
606 Cedar St
St Charles, IL 60174
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