Tankless Water Heaters

Whether you need a new installation or a tankless water heater repair our plumbing technicians specialized in water heaters.

HVAC Repairman

Is your tankless water heater displaying an error code or simply not working?

If you notice leaks, a lack of hot water, or other unusual issues with your tankless water heater, call us right away. Our technicians are familiar with tankless water heater repair from many leading manufacturers. No matter what breaks, we can fix it. 


Tankless water heaters provide instant hot water without using the energy than traditional water heaters do. Since water is heated as you need it, there’s no energy wasted in heating and maintaining the temperature of gallons and gallons of water. These high-efficiency systems heat water as it is needed in both residential or commercial settings. 


We are committed to ensuring you see the actual value of this investment; our licensed, certified, and highly trained technicians are ready to meet all your modern water heater needs and help you save money.

Tankless Water Heater

Common Tankless Water Heater Problems

Mineral Buildup: Even with a tankless water heater, minerals from hard water can build up in the lines, including magnesium and calcium. A water softener or water heater flush can resolve the problem.


Blocked Air Supply/Exhaust: This can cause the water heater to malfunction and create a fire hazard. A blockage creates problems with combustion and venting; a water heater should be far enough from objects to avoid this.


Ignition/Flame Failure: Natural gas water heaters can fail to ignite due to a gas supply problem, faulty valve, or failed ignition pack. Flame failure can occur due to a gas pressure problem or, in the case of electrical water heaters, a power issue may be to blame. Contact us to send a technician to get to the root of the problem.

No Hot Water: If there’s no hot water or you run out too soon, the thermostat might need to be adjusted, fixed, or replaced. The heater may be improperly sized if issues have persisted since installation.

Tankless Water Heater Installation

If the benefits of tankless water heaters sound good to you, our plumbers can install a brand-new system, replacing your outdated, energy-guzzling traditional water heater. Our technicians are fully trained and experienced at installing these modern marvels. We’ll even visit your home to perform an evaluation, so we can find a unit that meets the exact needs of your family while ensuring the best energy efficiency possible. Our technicians can install any water heater brand from Bradford White, Rheem, Kenmore, American Standard, Bosch, and Navien.

Tankless Water Heater Maintenance

If you neglect maintenance on your tankless water heater, you will shorten the lifespan of the appliance. Over time the minerals in your home’s water will cause a buildup on your tankless unit. Therefore it is critical that a professional plumber properly cleans and flush your system yearly. 


Adjustments and repairs can avoid complete breakdowns and more expensive repairs and replacements. We will fix the issue and get your water heater repaired and advise you on replacing severely damaged, broken, or burnt parts. You can rely on our services and call us at any time if the water heater malfunctions.

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Customer Reviews

Called Absolute for my 81 year old landlord in the height of Summer heat. Scott came out to inspect the old beast of an AC and found many issues. He took the time to educate us, note everything, photograph it and provide several recommendations...and my stubborn landlord has done nothing LOL. A couple months later we asked that Scott come back out and he was there that same day.

Emily H.

Santa Ana, CA

I contacted Absolute Airflow to check my mother's AC, as it was not getting cold. The tech (Scott) arrived earlier than his scheduled time, and was very knowledgeable, professional, and most of very personable with my mother in letting her know that the issue was. Superb customer service Scott and thank you Absolute Airflow! I highly recommend Absolute Airflow.

Billy A.

Billy A.

Bellflower, CA

I have called in Absokite Airflow for my tankless water heater and A/C unit for maintenance. They were professional and took the safety precautions necessary including wearing a mask and cornering their shoes when entering my home. I recommend them highly. Shout out to Zack who took care of the tankless water heater.  They were professional and friendly.

Beatriz S.


Santa Fe Springs, CA

Carlos came to our house to access the A/C project and to give us an estimate. He was very knowledgeable and took his time to explain all the opinions in detail as well as the installation process and warranties. Tanner and Chris were the installers, they were very professional taking their time and attention to details. To keep our house clean while installing the new A/C system.

Robert M.

Robert M.

Whittier, CA

HVAC Repairman

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