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Heating & Cooling HVAC Services - Crystal Lake

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

Crystal Lake HVAC Services

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

  • Crystal Lake Air Conditioning Install & Repair
  • Crystal Lake Heating/Furnace Install & Repair
  • Crystal Lake Indoor Air Quality

Crystal Lake Air Conditioning

As your Crystal Lake 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.

Crystal Lake Heating

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

Crystal Lake Indoor Air Quality

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

Schedule HVAC Services in Crystal Lake

When your Crystal Lake 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, Crystal Lake.
  • 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.

Crystal Lake, Illinois

The City of Crystal Lake traces its origin to two separate communities which were established in the 1800s. Those communities were generally known as Nunda and Crystal Lake. In 1835, Ziba S. Beardsley had come to the shores of the lake and commented that the “waters were as clear as crystal”, thereby giving the lake its name. Ziba Beardsley continued south to Naperville. In February 1836, the first white settlers, Beman and Polly Crandall and six of their ten children, came from New York State traveling to Crystal Lake in a covered wagon. Their original cabin was built in the vicinity of today’s intersection of Virginia Street and Van Buren Street. Four of the Crandall children were born there. Najah Beardsley’s family was the second to settle in the area; his grandson, William Beardsley, was the first white child born on the Crystal Lake prairie, on May 7, 1837.

The town was first known as Crystal Ville. It was changed to Crystal Lake sometime before 1840. The area known today as downtown Crystal Lake was first called Dearborn and later, Nunda, from an area in New York where many settlers originated. The village of Dearborn was founded in the 1850s after an extension of railroads through the area. The first train station was built in 1856, although it was pre-fabricated and shipped from Chicago on a flatcar. At that time, the main business district for the village of Crystal Lake was located on Virginia Street, about one mile (1.6 km) southwest of the railroad station. The railroad served to connect both the people and industries of Crystal Lake and Dearborn to Chicago and the rest of the country. Dearborn grew quickly due to this new rail connection.[citation needed]

On October 7, 1868, Dearborn’s name was changed to Nunda. The village was platted in 1868 by local surveyor, John Brink, after whom a downtown street is now named. The village included the area now generally bounded by Illinois Route 176 on the north, Crystal Lake Avenue on the south, Main Street on the east, and Walkup Avenue on the west. Much of the land was originally owned by two early settlers, Daniel Ellsworth and Simon S. Gates. The villages of Crystal Lake and Nunda were both incorporated in 1874. In 1908, the name of the village of Nunda changed its name to North Crystal Lake. Several attempts were made to consolidate the two villages, and finally, after much disagreement, the village of North Crystal Lake was annexed to the Village of Crystal Lake in 1914, and a consolidated city government was established.

Back in the 1860s, when the town of Crystal Lake was about 25 years old, Charles S. Dole purchased over 1,000 acres (4.0 km2) of land overlooking the lake. It was his dream to construct an elaborate estate that would reflect his position as a successful businessman. He was an early member of the Chicago Board of Trade, being associated with Armour, Dole & Co. in Chicago. To carry out his plan, he built a three-story mansion with adjoining gardens and stables. European craftsmen were imported to lay parquet floors, fashion archways and carve interior wood work from black walnut trees grown on the property. As a final touch, he brought in Italian artisans to build several marble fireplaces. According to Mr. Dole’s obituary, construction costs exceeded $100,000, an enormous amount of money in those days.

The estate was known as Lakeland Farm. Mr. Dole lived there with his wife Julia, his mother-in-law, Mrs. Harriet Coffin, his two daughters, Mary Florence, Harriet (Hattie), and son, Sydney. Dole maintained the estate for over 30 years, entertaining lavishly. As an example, for his daughter’s wedding in 1883 he built a spur line from the Chicago and Northwestern railway tracks almost to his doorstep. A canopied and carpeted walkway extended 750 feet (230 m) from the front door to the train enabling the guests to walk to the mansion for the ceremony and return to the train without concern for the weather. Notable wedding guests included Julian Rumsey (mayor of Chicago and Dole’s first cousin) and Levi Leiter (first partner with Marshall Field).

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