Affordable Tankless Water Heater Repair Service In Oklahoma City
Tankless Water Heater Repair Services Whenever You Need
No hot water? Error codes? OKC Plumbing and HVAC provides fast, expert, and affordable tankless water heater repair services. We offer 24/7 emergency service to fix ignition failures, water flow issues, burner malfunctions, and temperature fluctuations, restoring your hot water quickly.







Top Reviewed Air Conditioning Service Company
Robert Reiss2024-12-16Trustindex verifies that the original source of the review is Google. Great company, I did some computer work for the them and help set up some field management software. Working close to the owner and their employees it was easy to tell they really care about giving the best options to their customers and doing what's right. I would recommend them and will be using them moving forward. Tiffany Dalton2024-10-27Trustindex verifies that the original source of the review is Google. Absolutely loved the experience very good employees they did a very good job. Would recommend Deana Blackshire2024-10-14Trustindex verifies that the original source of the review is Google. LC was very timely and was wonderful to help on a Sunday. Great service! Tuan Lam2024-10-08Trustindex verifies that the original source of the review is Google. Okc pluming and hvac come on emergacy call and took care of me I highly recommend them for service and very honest and affordable Derrick Williams2024-10-08Trustindex verifies that the original source of the review is Google. Had a good client needing some HVAC work done at his restaurant, I referenced these guys and they were very professional and everyone’s happy, don’t hesitate to call them S. Bell2024-09-20Trustindex verifies that the original source of the review is Google. Great job. Sam Soomi2024-09-18Trustindex verifies that the original source of the review is Google. My aunt needed a new AC about a month ago, we called these guys and we got a quote better than anyone out there. They came installed and were out of there in a blink of an eye! I’m very happy with their work! Highly recommend them. Midwest Territory2024-09-11Trustindex verifies that the original source of the review is Google. OKC HVAC has completed a couple of jobs at my property and they are always fast to respond to my calls, they get the work scheduled quickly, and they always perform quality work. If your looking for professional service at affordable pricing, they are definitely the company to call. Omar Omar2024-09-10Trustindex verifies that the original source of the review is Google. We had a water break next to our back porch. We got a few quotes and went with OKC plumbing. Wow! Very professional team! they assessed the situation, explained everything clearly, and put everything back to perfect again. Thanks so much!Load more
Fastest & Easiest Proccess
Step 1
Book Appointment
Easily book a convenient time for our team to visit your home or business.
Step 2
Our Experts Arrive
Our skilled staff arrives on time, ready to address your plumbing or HVAC needs.
Step 3
Problem Solved
We provide efficient solutions, restoring functionality to your property.
Tankless Water Heater Repair Service Tailored To Your Needs
Tankless water heaters require specialized repairs to maintain efficiency and performance. Our expert technicians provide detailed diagnostics, component repairs, and system optimizations to resolve flow rate issues, ignition failures, error codes, and temperature fluctuations. We ensure quick, effective solutions to keep your hot water running reliably.

Tankless Water Heater Diagnostics
We perform thorough system evaluations to detect ignition malfunctions, sensor failures, gas supply issues, and water flow restrictions. Using advanced diagnostic tools, we identify error codes, thermostat failures, and heat exchanger inefficiencies to restore optimal performance.

Error Code Troubleshooting
Tankless water heaters display error codes for issues like low water pressure, overheating, and burner failure. We decode system alerts, test electrical components, recalibrate temperature sensors, and reset controls to fix malfunctions quickly and efficiently.

Burner & Ignition System Repair
A faulty burner or ignition system can prevent your water heater from heating water properly. We inspect burner assemblies, clean carbon buildup, check gas supply lines, replace faulty ignition rods, and adjust flame stability to restore safe and efficient heating.

Heat Exchanger Flushing & Descaling
Mineral buildup in the heat exchanger reduces efficiency and water flow. We perform full-system flushing, descaling treatments, and internal cleaning to remove calcium and lime deposits, prevent overheating, and restore peak efficiency.

Flow Sensor & Water Pressure Adjustment
Low water pressure can disrupt heating cycles and cause cold water fluctuations. We repair flow sensors, unclog blockages, adjust water inlet pressure, and calibrate flow rate settings to ensure consistent hot water delivery.

Gas Line & Exhaust Venting Inspection
Proper gas supply and venting are essential for safe tankless water heater operation. We inspect gas valves, test for leaks, ensure proper combustion airflow, and clean exhaust vents to eliminate carbon monoxide risks and improve efficiency.

Electrical System & Circuit Board Repair
Electrical failures can cause power loss, sensor malfunctions, and heating disruptions. We diagnose and repair faulty wiring, blown fuses, damaged circuit boards, and power fluctuations to restore proper heating control and system reliability.
We Provide Tankless Water Heater Services Quickly and Efficiently
A malfunctioning tankless water heater can leave you without hot water when you need it most. OKC Plumbing and HVAC specializes in fast, efficient repairs for gas and electric models, addressing issues like ignition failure, water flow restrictions, temperature fluctuations, and error codes. Our licensed technicians provide 24/7 emergency service, upfront pricing, and expert solutions to restore your tankless water heater’s performance quickly.
Top Air Conditioning Service
Expert Repairs for Every Type of Tankless Water Heater
We repair all tankless water heater types, ensuring optimal heating, water flow, and energy efficiency. Whether you have a gas, electric, or condensing model, our experts provide fast and reliable repairs to fix ignition failures, sensor malfunctions, and system inefficiencies.
Gas tankless units rely on burners and venting systems for heating. We repair gas valve issues, ignition failures, burner clogs, and vent blockages to restore safe and efficient operation.
Electric models use heating elements and thermostats. We fix burnt-out elements, wiring faults, thermostat calibration issues, and power disruptions to restore consistent hot water.
Condensing units use heat exchangers for energy efficiency. We clean condensate drains, flush mineral buildup, and inspect venting systems to maintain optimal performance and prevent overheating.
We Offer Expert Tankless Water Heater Repair for Residential & Commercial Properties
Tankless water heaters are essential for homes and businesses that rely on instant hot water. Whether you have a small household unit or a high-capacity commercial system, we provide fast diagnostics, expert repairs, and system optimizations to restore efficiency, prevent failures, and extend the life of your water heater.
Residential
A malfunctioning tankless water heater can disrupt daily activities like showering, cooking, and laundry. We diagnose and repair ignition failures, flow sensor malfunctions, error codes, and temperature fluctuations. Our services ensure consistent hot water, lower energy costs, and reliable performance for your home.


Commercial
Businesses depend on high-performance tankless water heaters for restaurants, hotels, offices, and industrial facilities. We repair high-demand heating units, recalibrate thermostats, flush mineral buildup, and optimize gas or electrical systems to ensure uninterrupted service, proper water pressure, and long-term efficiency.
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We’re Available 24/7 for Urgent Tankless Water Heater Repairs
Our technicians are skilled in servicing Rheem, Rinnai, Navien, Noritz, Takagi, Bosch, and more. Whether it’s error codes, burner failures, or sensor malfunctions, we provide brand-specific repairs for reliable performance.

Why We’re the Best Choice for Tankless Water Heater Repairs in OKC
We provide top-rated tankless water heater repairs backed by 15+ years of experience, expert technicians, and industry-leading tools. Our services include diagnostics, burner repairs, error code troubleshooting, and efficiency optimizations. With fast response times, transparent pricing, and high-quality workmanship, we ensure long-lasting results for every repair.

15+ Years of Experience
With over a decade of experience, we have in-depth knowledge of tankless water heater diagnostics and repairs. From ignition malfunctions to heat exchanger issues, we know how to restore peak efficiency and extend system lifespan.

Licensed & Experienced Technicians
Our licensed and insured technicians specialize in troubleshooting and repairing all types of tankless water heaters. We ensure safe gas line handling, electrical diagnostics, and system recalibrations for reliable hot water solutions.

Advanced Tools & Techniques
We use cutting-edge diagnostic equipment to identify flow rate issues, burner failures, and temperature fluctuations. Our advanced repair techniques, from flushing heat exchangers to fixing circuit boards, ensure your system runs at optimal efficiency.

Energy-Efficient Solutions
We focus on energy-efficient repairs that improve heating performance and lower utility costs. Our services include heat exchanger descaling, flow sensor adjustments, and thermostat recalibrations to keep your system running at peak efficiency.

High-Quality Workmanship
Every repair is handled with precision and attention to detail. Whether it’s gas valve replacements, burner cleanings, or electrical repairs, we ensure long-lasting solutions that prevent repeat breakdowns and costly future issues.

Work With All Major Brands
We repair all major tankless water heater brands, including Rheem, Rinnai, Navien, Noritz, Takagi, Bosch, and more. Our expertise allows us to troubleshoot brand-specific issues and provide OEM part replacements.

Fast & Reliable Repairs
We offer same-day service and 24/7 emergency repairs to restore hot water as quickly as possible. Our team responds promptly to gas leaks, ignition failures, and water flow disruptions to keep your system running.

Transparent Pricing
We provide upfront, honest pricing with no hidden fees. Whether you need a minor thermostat adjustment, a full burner replacement, or complex electrical repairs, you’ll receive a clear cost breakdown before work begins.

Satisfaction Guaranteed
We stand behind our tankless water heater repairs with a commitment to quality and customer satisfaction. From quick fixes to major overhauls, we ensure your system runs safely, efficiently, and reliably.
This could be due to ignition failure, gas supply issues, or a faulty flow sensor. Our technicians diagnose the problem, reset system controls, and perform burner or heating element repairs to restore hot water.
Error codes indicate specific malfunctions such as low water pressure, overheating, ignition failure, or a clogged heat exchanger. We troubleshoot and resolve these issues to ensure proper system function.
Frequent shutdowns may be caused by fluctuating water pressure, clogged flow sensors, or venting problems. We test and adjust pressure settings, clean inlet filters, and inspect exhaust vents to prevent unexpected shutdowns.
It’s recommended to flush your tankless water heater annually to remove mineral buildup and maintain efficiency. Homes with hard water may need more frequent descaling to prevent heat exchanger damage.
Yes! We provide 24/7 emergency repair services for urgent issues like gas leaks, total system failure, ignition malfunctions, and electrical faults. Our team quickly restores your hot water supply.
Basic tasks like checking the power supply or resetting the unit can be done at home, but burner repairs, gas line adjustments, flow sensor replacements, and electrical fixes require a professional for safety and accuracy.
This “cold water sandwich” effect happens when flow sensors misread demand or heating elements lag behind usage. We recalibrate thermostats, adjust flow rates, and optimize burner function to maintain consistent hot water.
We service Rheem, Rinnai, Navien, Noritz, Bosch, Takagi, and more. Our team is trained in brand-specific diagnostics and repairs for accurate troubleshooting and long-lasting solutions.
Costs depend on the issue, replacement parts, and service complexity. We provide upfront pricing with no hidden fees before starting any repairs.