Heating & Cooling HVAC Services - Dekalb

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

Dekalb HVAC Services

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

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

Dekalb Air Conditioning

As your Dekalb 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.

Dekalb Heating

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

Dekalb Indoor Air Quality

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

Schedule HVAC Services in Dekalb

When your Dekalb 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?

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.

Dekalb, Illinois

DeKalb was originally called Huntley’s Grove, and under the latter name was platted in 1853. The name is for Baron Johann de Kalb, a major general in the American Revolutionary War. A post office has been in operation at DeKalb since 1849. The development of barbed wire is key in the history of DeKalb. Joseph Glidden, who developed barbed wire, was a historic citizen of DeKalb. Glidden would ultimately be known as the “Father of Barbed Wire”. Glidden began to mass-produce his invention, and eventually sold half of the company to Isaac L. Ellwood. Together, the two formed the Barb Fence Company.

The city of DeKalb is in northern Illinois, United States, roughly 55 miles west of downtown Chicago and roughly 30 miles southeast of Rockford, IL. The Kishwaukee River flows northward through the city of DeKalb.

According to the 2010 census, DeKalb has a total area of 14.812 square miles (38.36 km2), of which 14.65 square miles (37.94 km2) (or 98.91%) is land and 0.162 square miles (0.42 km2) (or 1.09%) is water.

On August 24, 2007, the Kishwaukee River at DeKalb crested at 15.27 feet (4.65 m) (all-time record 15.8 feet (4.8 m)) causing major flooding. This was only the second time the river has risen above 15 feet (4.6 m) since the level of the river has been recorded.

DeKalb has a humid continental climate (Köppen climate classification Dfa) typical of northern Illinois, with four distinct seasons. Summers can be hot, while winters are cold and snowy. Precipitation is somewhat uniform year-round, although it can be heavier in the spring and summer when the area is prone to strong thunderstorms.

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