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Call a Local Heating and Air Conditioning Company That Cares

Your Reliable HVAC Contractor in

Finding the right heating and AC company in Saint Charles should not have to be a hassle. Maybe you are wary because of a negative experience with past contractors. TDH Mechanical was established to give residents and commercial property owners throughout Chicagoland a trusted solution to their HVAC problems.

We saw a need for customer-oriented contractors in our neighborhood and set out to develop a business that guarantees your satisfaction. You deserve the best solutions, and we have the right team in place to provide them. From boiler repair to mini-split installation, our expert technicians do it all.

To schedule furnace repair or replacement, reach out to us at (630) 406-9082. We look forward to adding you to our family of happy customers in Elgin, Batavia, and Saint Charles.
What Sets Us apart From Other HVAC Companies?

How Are We Different?

  • We have over 36 years of experience serving the St. Charles area.
  • We serve more than 25 towns in the Greater Chicago area.
  • Our team is NATE and EPA certified, and comply with industry codes and standards.
  • We do not subcontract our work. Your technician is a full-time employee of TDH Mechanical, handpicked by Tim himself.
  • We have a team of loyal professionals, some of who have been with us for many years. This allows them to cultivate long-term customer relationships.
  • We always provide top-notch, personalized service from start to finish. No matter the job's extent or complexity.
There is no problem too big or small 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 an air duct cleaning. All of our technicians carry a customer-first mindset, allowing you to benefit from unparalleled workmanship and our attention to detail. Our goal is the same as yours: to maintain you a truly comfortable home without unexpected interruptions from your heating and cooling system.
Allow our techs to repair your Water Heater in Elgin IL
Experienced HVAC Professionals in Saint Charles


Check out our Water Heater repair service in Saint Charles IL along with the other over 5,000 people per year have.
Served Per Year
See what your neighbors think about our Furnace service in Batavia IL with our multiple 5-star reviews.
5 Star Reviews
Call TDH Mechanical, Inc. for great Boiler repair service in Elgin IL as we have been for over 34 years.
Years in Business
Trust our 18 techs to service your Heat Pump in Saint Charles IL
Expert Techs
See what your neighbors are saying about our Furnace repair service in Saint Charles IL

Cities We Service

Click on a city below to see what your neighbors are saying about their recent experience with TDH Mechanical, Inc..
Sign up for our Heating maintenace plan in Batavia IL to ensure your home stays comfortable.
Do you like saving money? Would you like healthier, cleaner air? Then, you need to schedule an appointment for HVAC maintenance! Getting regular furnace tune-ups in Saint Charles extends the life of your HVAC equipment and saves you money on your energy bills. For more information on our furnace maintenance plans, contact us by form or phone!
Check out our Financing options in Saint Charles IL with FTL Finance.
Check out our Financing options in Saint Charles IL with Wells Fargo.
For a quote on  Boiler installation or repair in Batavia IL, call TDH Mechanical, Inc.!

Saint Charles Water Heater Service

For those living in Saint Charles, there's nothing like stepping into a hot shower, especially on cold days. But, if your water heater decides to take an unexpected vacation, all that comfort disappears.

Fortunately, TDH Mechanical, Inc. has a team of water heater repair experts ready to help. With a deep understanding of tanked water heaters and the tankless varieties, we've handled it all.

From routine maintenance checks ensuring everything's in top shape to installing a brand-new system, our proficient team is always on standby, ready to serve. With us, your comforting hot showers are in safe hands! Give us a call at to schedule water heater service in Batavia or Elgin.

Water Heater Service

A Commercial HVAC Company You Can Trust

In the fast-paced world of business, there's no room for HVAC hiccups. Keeping your customers and tenants happy means keeping them comfortable. You need AC units to run well and RTUs to flick on when needed. But you also need to consider long-term efficiency and costs. That’s the cost of doing business (or renting one).

At TDH Mechanical, Inc., we're equipped with the skills and expertise to handle the unique demands of commercial HVAC systems. Whether you run an office space, a retail store, or a large facility, we ensure your HVAC runs seamlessly, contributing positively to your business operations.

Commercial HVAC Service
To get an estimate on Furnace replacement in Saint Charles IL, call TDH Mechanical, Inc.!
Not sure if it's more cost effective to fix or replace your broken Furnace? Call us for a free quote.
Schedule your Heat Pump replacement in Elgin IL today.
Need a reliable Boiler repair company? Call (630) 406-9082 today!
Looking for someone to help with a Heat Pump repair in Saint Charles IL? TDH Mechanical, Inc. has scheduling options that fit your availability
For the best Heat Pump replacement in Elgin IL, choose a BBB rated company.
For the best Heat Pump replacement in Elgin IL, choose a BBB rated company.
For your Water Heater repair in Batavia IL, trust a HomeAdvisor Approved contractor.
For your Furnace repair in Elgin IL, trust a HomeAdvisor Approved contractor.