The Heart
Behind DeHart

Knowing who you can trust your comfort to can be a tough decision. Fortunately, if your home or business needs air conditioning, heating, or indoor air quality services, the local experts at DeHart Air Conditioning are just a phone call away.

Our Products

LENNOX HVAC SYSTEMS & PRODUCTS

MITSUBISHI MINI-SPLIT HEAT PUMPS & VRF SYSTEMS

CLIMATEMASTER GEOTHERMAL HEAT PUMPS

GET THE BEST HVAC SYSTEMS INSTALLED BY DEHART AIR CONDITIONING

A FAMILY-OWNED HVAC COMPANY WITH 100 YEARS OF EXPERIENCE

DeHart was founded in 1920 in Chickasha, OK, by Ed DeHart. In the early years of the company, which was first called DeHart Sheet Metal Works, DeHart was the first automated sheet metal fabrication shop in the Southwestern United States.

Ed’s son Elmer joined his father’s business in 1949, which was renamed DeHart Air Conditioning and Electronics to focus on the HVAC industry. In 1965, a new building for the company was built, which has remained as DeHart’s Chickasha location ever since. Elmer’s son Mark joined the family business in 1976, and expanded the company into the commercial and geothermal markets. Today, Mark’s sons, Seth and John, are co-owners, and have grown the company to include a second location in Duncan, OK.

As of 2020, DeHart Air Conditioning has 100 years of experience in the business. As a fourth-generation family-owned HVAC company and a full service dealership of more than 25 employees, we know the Chickasha and Duncan area and what homeowners and commercial property owners in the region need. Learn more about the history  of DeHart and our 100 years in buisness here

From the steamy summers to the chilly winters here in Grady County, our team of heating and cooling experts understand how difficult it can be to stay comfortable. That’s why our caring team of expert HVAC professionals will make sure you stay cool during the summer heat and cozy during the winter.

HIGH-QUALITY DIVERSE HVAC SERVICES

Whether you’re a homeowner that needs help with your air conditioning and heating system (even unique solutions like geothermal systems, VRFsgas log fireplaces, and radiant floor heating), your ductwork, or with your indoor air quality, we can help.

From services ranging from replacement, repair, and maintenance to new construction HVAC installation, our expert technicians do it all. We even install portable generators and home generators, both from Kohler, to guarantee your power will stay on. We’ll make your home more comfortable regardless of what the weather outside is like and help to keep you and your family healthy with solutions like air filtration, purification, and humidity control.

We’re just as comfortable doing new home construction HVAC as we are installing, maintaining, and even educating the customer on new HVAC technologies like ductless mini split heat pumps from Mitsubishi Electric.

At DeHart, we also offer commercial HVAC solutions so property and business owners from Chickasha to Duncan and the surrounding area can keep their properties comfortable year-round, including commercial HVAC replacement and new commercial HVAC ductwork and design.

Only the Best

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HIGH-QUALITY & RELIABLE HVAC SERVICE

When it comes to residential heating and air conditioning service and routine commercial maintenance, our technicians are your trusted local experts. They are known for their ability to handle a wide variety of calls and can solve any HVAC problem you send their way. Because we offer continuous training, our technicians are also highly knowledgeable about current best practices in the industry. It’s no wonder our team of technicians has built such strong rapport and trust with our customers.

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EXPERT HVAC SYSTEM INSTALLATION

Whether you need to design and build a robust HVAC system for your commercial property or simply want to hire us for plan and spec work, you can trust our construction and installation team to get the job done right. This team handles the bulk of our commercial HVAC work and can take any job from start to finish, advising you on the best system design and equipment options. They regularly receive praise and positive feedback for their high-quality work.

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FRIENDLY OFFICE PERSONNEL

We are proud to employ a talented office staff who consistently makes sure we are on track and providing the best possible service to our customers. When you call us for help regarding your residential or commercial HVAC system, you’ll speak with one our friendly and professional receptionists. Thanks to our office personnel, our customers always feel well taken care of.

HIGH-QUALITY DIVERSE HVAC SERVICES

Whatever your home, new build, or commercial property needs, the HVAC specialists at DeHart Air Conditioning have the solution for you. With the best productsfinancing and rebate options, and specials, as well as the highest-quality service, you can have peace of mind about your comfort and indoor air quality.

What makes DeHart a Lennox Premier Dealer?

  • Superior Service
  • Industry-Leading Products
  • Highly Rated
    for Customer Satisfaction

Why Choose Lennox HVAC Systems?

  • Energy Efficient
  • Pure, Clean Freshness
  • Save Money on Bills
  • Combats Dry Air

Years Established

locations

field workers

Office Staff

Contact Us

Chickasha Location

1201 South 4th Street
Chickasha, OK 73018

Duncan Location

5315 N. Highway 81
Duncan, OK 73533

OKC Location

4702 SW 20th, Oklahoma City, OK 73128