Homeowner HVAC Questions
4.8 stars, 300+ Google reviews
Most HVAC questions start with the same issue: what is safe for a homeowner to check, and when should Hartzell’s handle it? Use this page as the safety-first answer hub.
Direct Answer
You can safely check the thermostat mode and setpoint, filter condition, open supply and return registers, breaker position without repeated resetting, visible outdoor blockage, visible water from a safe distance, visible error codes, and system sounds or smells.
When To Stop
Stop running the system and call Hartzell’s when the breaker trips again, airflow is gone, ice is on the coil or copper lines, water is near equipment, an electrical smell appears, or a fault code keeps coming back.
Emergency Boundaries
For gas odor, smoke, fire, a carbon-monoxide alarm, exposed energized wiring, flooding near electrical equipment, or unsafe structural conditions, leave or call emergency services or the utility as appropriate before booking HVAC work.
What A Professional Measures
A technician may measure airflow, static pressure, temperature split, electrical load, controls, coil condition, refrigerant circuit behavior, combustion safety, drain safety, or geothermal loop readings depending on the equipment.
Pricing questions
How much does AC repair cost in Oklahoma?
At my shop the visit is $210 flat: $99 dispatch plus $111 diagnostic. The repair itself depends on the part. A capacitor and a compressor are very different numbers, so I price the repair in writing once I know what failed, before any work starts. The $111 does not come off the repair price.
How much does a new HVAC system cost in Oklahoma?
It depends on the size of the house, the ductwork, the equipment, and the efficiency you pick, so I do not quote it off a phone call. The estimate is free, I size the system with a load calculation, and you get the number in writing. Financing is available through five lenders.
How much is an HVAC tune-up in Oklahoma?
A standalone tune-up is $229, weekday 7am to 3pm. The One Visit Spring or Fall 360 plan is $199 a year, and the Spring and Fall 360 plan covers two visits for $360 a year. A geothermal tune-up is $348.
Does Hartzell’s charge a diagnostic fee?
Yes, $111, plus the $99 dispatch, for $210 flat on a residential call. There is always a dispatch fee and always a diagnostic fee, and I do not waive the diagnostic. New system estimates are free.
Geothermal questions
Who installs geothermal heat pumps in central Oklahoma?
I do. I am IGSHPA accredited, a ClimateMaster GeoElite dealer, and a WaterFurnace and GeoStar dealer. I design the loop, size the system, and stand behind the install, and my OWRB-licensed driller does the drilling. For geothermal I travel across Oklahoma and into most of the states that border it. Call 405-375-4822.
How much does geothermal cost in Oklahoma?
The ground loop is the biggest cost driver, and tonnage, soil, access, and ductwork move it a long way, so I quote it after I see the property. The estimate is free. The cost drivers are laid out on my geothermal cost page.
Are there geothermal rebates in Oklahoma?
Some Oklahoma electric utilities and co-ops run geothermal rebate programs, and they change by utility and by year. Tell me your ZIP code and electric utility, and I will check the current official program before I quote you an amount. I do not guess on rebates.
How much is a geothermal diagnostic?
$348 flat, weekday or after hours. It covers loop pressure, refrigerant charge, desuperheater, controls, and heat exchanger, with a written report and quote before I leave.
Service area questions
Does Hartzell’s serve Enid Oklahoma?
Yes. Enid is in Garfield County, one of the seven counties I run every day.
Does Hartzell’s serve Oklahoma City?
Yes, northwest Oklahoma City and the western side of the metro, plus Yukon, Mustang, Piedmont, Bethany, Warr Acres, and Edmond. Oklahoma and Canadian counties are both in my daily seven.
What counties does Hartzell’s cover?
Kingfisher, Canadian, Oklahoma, Garfield, Major, Logan, and Blaine, every day. Outside those seven I do not cover everyday heating and cooling. Geothermal is the exception.
Who is Hartzell’s Heat and Air?
I am Dave Hartzell, a Master HVAC technician with 47 years in HVAC/R. My shop is at 602 S Main St in Kingfisher and has been in business 15+ years. I am NATE certified and BBB A+ for 11 years, with 4.8 stars and 300+ Google reviews.
Emergency questions
Who do I call if my AC breaks down in Kingfisher Oklahoma?
Call me at 405-375-4822. A daytime residential call is $210 flat. A true after-hours emergency is $309 flat, $198 dispatch plus $111 diagnostic, non-refundable. Same-day service is offered where the schedule allows.
What do I do if my furnace stops working in Oklahoma?
Check the thermostat, the filter, and whether the breaker is tripped (once, not over and over). If you smell gas, do not run the furnace: leave the house and call your gas utility or 911 first. Otherwise call 405-375-4822.
Related Hartzell Pages
Ask DaveAI or Schedule Help
Ask DaveAI a quick question, call 405-375-4822, or book online. For non-emergency questions, DaveAI will ask for your phone, email, and town first, so the conversation stays tied together if you get disconnected.
Common Questions
What can I safely check before calling?
Check settings, filter, registers, visible water, visible outdoor blockage, breaker position without repeated resetting, visible error code, sounds, and smells.
Should I keep resetting a tripped breaker?
No. Check its position once. If it trips or is already tripped, stop and call Hartzell’s or an electrician depending on the situation.
Can DaveAI troubleshoot my system?
DaveAI can give safe observation steps and help capture contact information, but it will not give hazardous repair instructions.