• Heating and Cooling solutions with the experts at DeHart
    Achieve greater home comfort & energy savings
    Get preventive maintenance for your AC system
  • Design the Perfect HVAC System with the Experts at DeHart Air Conditioning!
    Design the perfect HVAC system with our experts
    Custom HVAC for your commercial space
  • Stay Comfortable During the Heat with the Experts at DeHart Air Conditioning!
    Feel comfortable at home even on the hottest days
    Expert air conditioning installation and maintenance

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 our HVAC experts today!


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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

central, air conditioning, ac, cooling, HVAC, dehart, OK
Temperatures are already climbing to over 100°F here in Chickasha and Duncan, Oklahoma, and that means we’re in for a long and hot summer. Are you considering air conditioner replacement as the heat... Read more