• Heating Filter, Replace, Heating Repair, Heating Maintenance
    Achieve Greater Home Comfort and Energy Savings
    Get preventive maintenance for your heating system
  • Fall Indoor Air Quality, HVAC, DeHart AirConditioning
    Indoor Air Quality & Your Family
    IAQ solutions, including air filtration, air purification, and humidity control.
  • Geothermal Energy, Geothermal Heat Pump, Geothermal Radiant Heating, Geothermal Oklahoma
    Discover the possibilities of Geothermal Energy
    You’ve probably heard about solar energy, but did you know there’s another alternative energy source right under your feet?
  • DeHart AC Oklahoma, Lennox Winter 2019 Promotion
    Save $1,250 on Lennox Home Comfort Systems Before February 8!
    When you replace your outdated HVAC equipment for more energy efficient appliances, you can feel the benefits all year round.

DeHart Air Conditioning

We are a fourth-generation family-owned HVAC company serving homeowners and commercial property owners in the Chickasha and Duncan, OK region. Whether you need to design a custom HVAC system, upgrade your heating and cooling equipment, or improve indoor air quality, we’re here to help.

Achieve greater comfort and efficiency.

Talk to the HVAC experts at DeHart today!

405-224-0184

Schedule Service

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What our customers are saying

We wanted to say 'thank you' for your great service! The new geothermal unit is working well and in fact is working better than our original ever did. We cannot express our appreciation enough. Thank you also for the extra time spent in completing paperwork for our OEC Rebate.

David and Kami Ratcliff

Read our blog

fireplace with mugs
Do you use a space heater or light your fireplace to keep your Chickasha or Duncan home warm during... Read more