Boiler Repair & Installation in Oklahoma
Hartzell’s Heat & Air repairs and installs hot water and steam boilers in central Oklahoma — NATE-certified, serving Kingfisher and surrounding counties for 15+ years. We service residential and light commercial boiler systems. Call 405-375-4822 for a diagnosis or free estimate.
Hartzell’s Heat & Air provides professional boiler repair and installation services throughout central Oklahoma. Boilers require specialized knowledge to diagnose and repair safely — our NATE-certified technicians have the training and equipment to get your system back online fast.
NATE-Certified Technicians · Residential & Commercial · Kingfisher OK · 405-375-4822
Boiler Repair Services
Boilers fail for a variety of reasons. Our technicians diagnose and repair the full range of boiler problems including:
- No heat or inconsistent heat — Thermostat, zone valve, or pilot/ignition failures
- Pressure issues — Low or high pressure caused by leaks, expansion tank failure, or pressure relief valve problems
- Circulator pump failure — Hot water not moving through the system
- Radiator or baseboard not heating — Air in lines, zone valve stuck, or flow restrictions
- Boiler leaking — Fittings, seals, heat exchanger, or pressure relief valve
- Unusual noises — Kettling, banging, or gurgling caused by scale buildup or air in the system
- Pilot or ignition failures — Gas valve, igniter, or thermocouple replacement
- Control board and thermostat issues — Electronic control failures
Boiler Installation & Replacement
Proper boiler sizing and installation are critical to system efficiency, comfort, and longevity. We handle complete boiler replacements and new installations for residential and commercial properties. Our process includes:
- Heat load calculation — Correct sizing based on your building’s actual heating needs
- System design — Proper piping, zoning, and expansion tank sizing
- Professional installation — Code-compliant work with permits where required
- System startup and testing — Full operational check before we leave the job
Types of Boiler Systems We Service
Hydronic (Hot Water) Boilers
The most common type. Heated water circulates through radiators, baseboards, or in-floor tubing to distribute heat. Efficient, comfortable, and long-lasting.
Radiant In-Floor Systems
PEX tubing embedded in floors carries hot water for even, floor-up heat. Common in new construction, barndominium builds, and high-end additions.
Steam Boilers
Found in older homes and commercial buildings. Steam boilers require specialized service knowledge for safe operation and repair.
Commercial Boilers
High-capacity boilers for commercial buildings, schools, and industrial facilities. We service and install commercial boiler systems throughout central Oklahoma.
Boiler Maintenance
Annual boiler maintenance prevents most common failures and keeps your system operating safely and efficiently. Our boiler tune-up includes:
- Flue inspection and cleaning
- Pressure and relief valve testing
- Circulator pump inspection
- Burner and heat exchanger inspection
- System water quality check
- Controls and thermostat calibration
Frequently Asked Questions
How long do boilers last?
Well-maintained boilers typically last 20–30 years. Annual service is the single biggest factor in boiler longevity.
My boiler keeps losing pressure — what’s wrong?
Pressure loss usually indicates a leak somewhere in the system — fittings, the expansion tank, or the pressure relief valve. It can also be caused by bleeding radiators without refilling the system properly. A technician can pinpoint the source quickly.
Why is my boiler making a banging or kettling noise?
Kettling is usually caused by limescale buildup on the heat exchanger, restricting flow and causing localized boiling. A power flush or descaling treatment typically resolves it.
Can you service in-floor radiant heating?
Yes. We service hydronic radiant floor systems including boiler repairs, pump replacements, zone valve service, and system balancing.
Real Job: Commercial Boiler Upgrade — Cornerstone Bank, Watonga OK
This Watonga commercial property was running on an aging boiler well past its service life. Hartzell’s replaced the original unit with a Laars NeoTherm high-efficiency condensing boiler — a quieter, more fuel-efficient system sized correctly for the building’s actual load. The job came in on time and on budget.
Before: Aging commercial boiler with labeled hot water supply and return lines — inefficient and overdue for replacement
After: Laars NeoTherm high-efficiency condensing boiler — properly piped, tested, and running
Hartzell’s has performed commercial boiler replacements throughout central and western Oklahoma for 15+ years. If your commercial property is running on aging equipment, call us for a free replacement estimate: 405-375-4822
Serving Central Oklahoma
Based in Kingfisher, Oklahoma, we provide boiler repair and installation services throughout central Oklahoma including Kingfisher County, Garfield County, Major County, Logan County, Canadian County, and Oklahoma County.
Considering a system upgrade? If your equipment is aging or repair costs are adding up, see our HVAC System Replacement page for honest guidance on when replacement makes sense — and what to expect from the process.
Common HVAC Questions › · Current Specials › · Equipment Warranties › · See Pricing ›
Nearby Communities We Serve
Our Job Isn’t Done Until You’re Satisfied
- Your system is running, tested, and set to your preferred temperature
- You understand how to operate your new equipment or thermostat
- The work area is clean — we take our trash with us
- You have documentation for manufacturer warranty and any applicable rebates
- Every question you have is answered before we leave the driveway
Written by Dave Hartzell — Owner, Hartzell’s Heat & Air. Master HVAC License #00115936. Serving central Oklahoma for 15+ years.