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Heating & Cooling HVAC Services - Darien

We’ve been the trusted choice for Darien, Illinois HVAC services for nearly 30 years.

Darien HVAC Services

For nearly 30 years, TDH Mechanical has been a trusted provider of Darien 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. 

  • Darien Air Conditioning Install & Repair
  • Darien Heating/Furnace Install & Repair
  • Darien Indoor Air Quality

Darien Air Conditioning

As your Darien 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.

Darien Heating

Looking to prepare your home for the cold months ahead? At TDH Mechanical, we deliver reliable Darien HVAC services that include industry-leading Darien 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.

Darien Indoor Air Quality

Your Darien 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 Darien’s home air quality as clean as possible—at a price you can afford.

Schedule HVAC Services in Darien

When your Darien 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!

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Our Services

How are we different?

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 including, Darien.
  • 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.

Darien, Illinois

The first people to settle in Darien came from New England via the Erie Canal and Great Lakes. Among the first to arrive was the Andres Neiman, the Rapones, and the Capra family. They settled along an old stagecoach line in 1835. Andres served as Justice of the Peace, Town Clerk, and Assessor Mr. Capra was the Dog Catcher, and County Commissioner. He also established the Capra Inn, near what is currently the intersection of Lemont Road and I-55; the inn served the 15 stagecoaches that traveled the stagecoach line, and included a tavern and a post office. Andres named the area “Cass.”

Andres and Father Beggs along with Louis Capra Sr. built the First Cass Church, which was a log cabin design. The church’s cemetery, located west of where the church stood (west of Bailey Road and north of Frontage Road), can still be seen today. The church was also used as a school house.

Elisha and Eliza Smart settled in Darien in 1838 with their 10 children. Elisha joined the Gold Rush and left for California, returning seven years later as a very rich man. He bought more land and donated it, on which a new Cass Church was built in 1870.

John and Hannah Oldfield came to Cass in 1850. Mr. Oldfield raised cattle and increased his land holdings to 2,000 acres (8.1 km2).

In 1881, a man named Franklin Blanchard opened a cheese factory. The factory was eventually moved or closed; a McDonald’s restaurant now occupies the factory’s original location.

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At TDH Mechanical we offer 100% free install estimates! Call us or complete our quote form.