Is it an emergency, or can it wait?
The first thing I tell a caller is whether it is a true emergency or something that can safely wait until morning. Gas smells and electrical issues: immediate. No heat below freezing: same day. Air conditioner out with young kids or elderly relatives in the house: urgent. Everything else, you get an honest read on the phone before I roll a truck.
4.8 stars · 300+ Google reviews · After-hours heating and cooling emergencies · Se habla español
What qualifies as an HVAC emergency?
- Gas smellLeave the home immediately, call your gas provider, then an HVAC professional. Do not attempt repairs yourself.
- No heat during freezing temperaturesWaiting can mean frozen pipes that cost more than the repair. Furnace not turning on
- No cooling during extreme heatIndoor conditions can become unsafe fast in an Oklahoma summer. AC not cooling
- Electrical issues or a burning smellTurn the system off immediately and call.
- Heat pump encased in iceHeavy ice that stops the unit running needs service. Heat pump freezing
- Complete system failureNothing runs at all after the basic checks below.




Four checks before you call
- Thermostat settingsRight mode, set past room temperature, fresh batteries.
- Air filterA clogged filter can shut a system down on a safety.
- BreakersLook for a tripped breaker, but do not reset it over and over.
- Outdoor unit clearNothing blocking it: leaves, debris, snow or ice buildup.
- Still down, or a safety concern?Call 405-375-4822. I will tell you if it is an emergency or can wait until morning.


Repair it, or plan ahead
Emergency breakdowns often reveal an aging system. I give you honest guidance on whether repair or replacement is the better long-term answer, and preventive maintenance cuts the odds of the next 2 AM call.
Maintenance
Seasonal visits catch weak parts before the cold snap or heat wave.
Plans from $199 a yearHVAC maintenanceWhat customers say
“Tim and Juan done an excellent job servicing my heatpump. We were really impressed of how thorough they checked everything.”
Steve I. · Google review · March 2026
“The technician was knowledgeable, friendly and professional. Hartzell’s Heat & Air has had our business for 10+ years and we’ve received great service consistently.”
Katie B. · Google review · May 2025
Why emergencies cluster here
Central Oklahoma swings fast: a hundred degrees for weeks, then a cold snap that drops twenty degrees overnight. Those extremes are when weak parts fail, and it is why my phone lights up in the first heat wave and the first hard freeze. Preventative maintenance catches most of it early. What a tune-up covers.
Sometimes an emergency breakdown shows you the bigger picture: an old system, one repair after another. When that is the case I tell you honestly whether the repair still makes sense or whether it is time to plan a replacement. I do not make more money steering you either way.
My job is not done until you are satisfied
- Running and testedThe system is running, tested, and set to the temperature you want.
- You know how to run itYou understand how to operate the equipment or thermostat.
- Clean work areaMy crew takes its trash with it.
- Paperwork in handYou have the documentation for the manufacturer warranty.
- Every question answeredBefore we leave the driveway.
I spent five years as a volunteer firefighter in Watonga, up at 2 a.m. when the call came in. That is still how I think about an emergency call: somebody needs help now, so the answer is a straight one.
Written by Dave Hartzell, owner of Hartzell’s Heat & Air. Oklahoma Master HVAC License #00115936, NATE certified, 47 years in the trade, based in Kingfisher County.
Straight answers
Is no air conditioning considered an emergency?
For a healthy adult in a well-ventilated home, a short outage usually is not. For elderly residents, young children or anyone with a heat-sensitive medical condition, an AC failure in Oklahoma summer heat is urgent, and I treat those calls that way.
What should I do if my furnace stops working at night?
Check the thermostat batteries and settings, then the breaker panel. If it will not restart and temperatures are below freezing or dropping fast, call. That is when waiting until morning can mean pipe damage that costs more than the repair.
How much does an emergency HVAC call cost?
After hours it is $198 dispatch plus a $111 diagnostic, $309 total and non-refundable, then the repair, quoted before any work. During business hours the standard call is $210.
How fast can you get to my house?
On most emergency calls in Kingfisher and the surrounding towns I am on site the same day. Outlying areas in Blaine, Canadian and Major counties take a little longer.
Do you provide emergency service in Oklahoma City?
Yes. I cover Kingfisher, Canadian, Oklahoma, Garfield, Major, Logan and Blaine counties, which takes in Oklahoma City, Edmond, Yukon, El Reno, Mustang and Guthrie.
Call and I will tell you straight
Describe what the system is doing. If it can safely wait for a weekday call, I will say so and save you the after-hours charge.
Call 405-375-4822Oklahoma City, Edmond, Yukon, El Reno, Mustang, Guthrie, Kingfisher and every town between. Counties: Kingfisher, Canadian, Oklahoma, Garfield, Major, Logan, Blaine.

