Heating & Cooling HVAC Services - Cortland

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

Cortland HVAC Services

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

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

Cortland Air Conditioning

As your Cortland 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.

Cortland Heating

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

Cortland Indoor Air Quality

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

Schedule HVAC Services in Cortland

When your Cortland 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!

Here To Help You

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.

Cortland, Illinois

A post office called Cortland has been in operation since 1892. The town was named after Cortland, New York.

Cortland is located at 41°55′29″N 88°41′35″W / 41.92472°N 88.69306°W / 41.92472; -88.69306 (41.924857, -88.693093).

According to the 2010 census, Cortland has a total area of 3.638 square miles (9.42 km2), of which 3.63 square miles (9.40 km2) (or 99.78%) is land and 0.008 square miles (0.02 km2) (or 0.22%) is water. The town is located immediately east of the city of DeKalb and just south of the city of Sycamore.

Get Your Free Quote

Fast, reliable, and quality results. Contact us for a free quote today.

Get Started

Trust Badges

We're Ready to Help!

Open 24 hours. Call us anytime, and we'll be there to help!

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