15+ years • 6,500+ jobs completed • 1,500+ Oklahoma homes served

Request a Service Call

Tell us what’s going on, we’ll call you back to schedule. Honest answers, no runaround.

Replacing a system? The estimate is free. I measure the house and give you a written price, no pressure. The $210 flat below is for a repair or diagnostic call on the system you have now.

A $99 dispatch fee applies when we come out. A separate $111 diagnostic fee is due at time of service, part of the $210 flat repair-call price.

I’m an existing Hartzell’s customer (within the last 18 months)

Request a callback

Tell me your name and number. I will record your callback request, and the office will confirm the next step.

Or use the full request form below.

4.8★

300+ Reviews

45 Yrs

HVAC Experience

NATE

Certified

Prefer to call? 405-375-4822Dave answers.

See real HVAC jobs near you. I show 6,500+ completed HVAC jobs by town on one page, with write-ups and photos from my crew. Type your ZIP or town to see the work around you. 4.8 stars, 300+ Google reviews.