• 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
  • 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
    Indoor Air Quality & Your Family
    IAQ solutions, including air filtration, air purification, and humidity control.

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!


Schedule Service

Get Started

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

HVAC, insulation, air sealing, energy audit, maintenance, replace, dehart, dehartac, ok
The leaves are changing, pumpkin spice flavoring has found its way into just about everything, and the neighborhood kids are scoping out which houses just might be giving out the king sized Snickers... Read more