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Tankless Water Heater Services

in Orange County

  • Absolute Airflow—Professional Installation, Maintenance, and Repairs
  • 24/7 Tankless Water Heater Emergency Service
  • We’ll Replace Your Traditional Water Heater So You Save

Professional Tankless Water Heater Services in Orange County

Tankless water heaters provide instant hot water without using the energy that traditional water heaters do. These high-efficiency systems heat up water as it is needed, in both residential or commercial settings. At Absolute Airflow, we are committed to ensuring you see the true 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.

Benefits of Tankless Water Heaters

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. Aside from energy efficiency, the benefits include:

  • A supply of hot water for as long as you need it.
  • The unit is small enough to attach to a wall, in a closet.
  • No tank that can degrade and potentially cause a flood.
  • Fresh, clean water, with no potential bacterial contamination in a tank.
  • Potential government tax credits for efficiency.
tankless water heater in shower

Installation & Replacement

If the benefits of tankless water heaters sound good to you, our water heater plumbers can install a brand-new system, replacing your outdated, energy guzzling traditional water heater.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.

We also replace old water heaters or tankless units that no longer perform as designed. Our maintenance and repair team is available 24/7 to address any type of emergency. While newer tankless models are extremely reliable, problems can occur, but we’re always available to send a team out to assess the issue. The most common problems you might encounter are:

  • 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 it was installed. In the case of back-to-back showers, cold water trapped in pipes can persist until the heater kicks in.
  • The Water is Scalding: Water that’s too hot can cause serious burns. If this is happening, the thermostat may be too high; if not, the water heater may be malfunctioning, especially if you adjust it to a cooler setting and the water is just as hot.
  • 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.
  • Overload: If too many appliances are using hot water, or multiple showers are running, the water heater can overload, limiting hot water availability or causing the unit to shut down. You may need a higher capacity system or a second water heater.
  • Ignition/Flame Failure: Natural gas water heaters can fail to ignite due to a gas supply problem, faulty valve or valve leak, 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.
  • Blocked Air Supply/Exhaust: Can cause the water heater to malfunction and create a fire hazard. A blockage creates problems with combustion air or venting; a water heater should be far enough from objects to avoid this. Check for insect infestations or birds’ nests near venting; if that’s not the issue, call a professional plumber.

Repair & Maintenance

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 heaters from many leading manufacturers. No matter what breaks, we can fix it. We also take maintenance very seriously and will periodically inspect your water heater. Adjustments and minor repairs can avoid complete breakdowns and more expensive repairs and replacements.

Contact Absolute Airflow

Our tankless water heater professionals install, repair, and maintain the latest, most efficient systems for homeowners in Southern California. At Absolute Airflow, we’re committed to top-quality customer service and attending to every last detail when providing installation or repair services. Whether you’re a first-time user or in need of a replacement, we can promptly, reliably, and affordably address your needs. Schedule an appointment or request emergency service by calling 833-482-2626 today.

Why Choose Us

  • All Brands of AC Equipment Serviced
  • Air Duct Screening & Replacement
  • Air Quality Testing and Installation
  • Preventative AC Maintenance
  • High Efficiency HVAC Systems
  • Attic & Insulation Upgrades
  • HVAC Service Membership
  • 24-Hour Emergency Repair
  • Furnace Repair and Tune-Ups
  • Heat Pumps
  • Thermostats
  • Carbon Monoxide Detectors

on a New High Efficiency System

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Contact Absolute Air
Get Help Now

Call us at 833..482.2626 or fill out the form below to book your service now!

ALL of Our Services

With over 20 years of combined experience, Absolute Airflow has been delivering superior HVAC, emergency plumbing and attic insulation services to clients throughout Southern California. As a trusted and licensed contractor, our staff of experts works tirelessly to deliver efficient and affordable home repair, construction and maintenance services. Whether you need to have your furnace repaired or an entirely new HVAC / AC unit installed, Absolute Airflow has got you covered! From heater tune-ups to air duct cleaning, unclogging drains and checking gas lines, there isn’t anything Absolute Airflow can’t do. We care about the health, wellbeing and comfort of our clients, that’s why our professional contractors and technicians are available 24 hrs a day, when you need us the most.


From installation and repair, tune-ups and air quality testing, Absolute Airflow has the best heating services in Orange County

Air Conditioning

Our licensed and insured HVAC installation & repair technicians are available 24/7 to handle all of your air conditioning needs


Keep Absolute Airflow plumbers on speed-dial for when you are in need of emergency plumbing services

Attic Insulation

Reduce your energy costs and keep your home comfortable year-round with Absolute Airflow’s high-quality attic insulation services

Our Testimonials

John showed up today , very professional and did a great job of figuring out the cause of the loud buzzing sound from the furnace. It was actually a simple fix but nevertheless he took his time to check other issues such as the leaking pump, possible electrical problems, and the dust. He recommended to sign up with their maintenance plan which we did since we thought is a good deal. I was also able to to use the Yelp deal $100 for $150 Voucher. If you have a carpet at home, don’t worry because they cover their shoes so there will be no stains. Thanks for the great service!

Julius J.Buena Park, CA - July 30, 2019

We found Absolute Airflow on Yelp and decided to contact them based on all the great reviews they’ve received. They were quick to respond to my quote inquiry and let me know right away about their $59 dollar diagnosis fee. They said they could arrive in the late afternoon and contacted us to inform of their eta. Christian diagnosed our HVAC and did a very thorough job. From helping us understand why our venting wasn’t putting out enough air to walking us through the HVAC setup and details. He even swept and cleaned up after himself. Lastly he brought his own shoe booties to protect our floor which we really appreciated. If I could give more than 5 stars I would! Thanks Christian!

Kay H.Santa Monica, CA - December 20, 2019

Super responsive and professional! They were able to work around my schedule to get me an estimate within a couple of days, and get a mini split A/C unit installed for me within a week even though I asked for a couple of unusual features (WiFi access for example).

The installers were very professional and the result looks great and functions perfectly. The owner followed up with me to verify that everything was done to my satisfaction. I will be switching to these guys for my HVAC annual maintenance going forward!

Robert P.Orange County, CA - May 23, 2019

It is so refreshing to have Victor and his crew taking great care of me and my clients. As a Realtor, it is crucial to be able to refer clients to someone that represents me well when interacting and serving my clients I send there way. They knock it out of the park and are fast, courteous and very fair on what they charge.

Mike R.Huntington Beach, CA - January 10, 2019

Our Specials

No Interest for 5 Years

New High Efficiency Systems


Drain Cleaning Special


Water Heater Flush


Furnace Tune-Up

Contact Absolute Air
Get Help Now

Call us at 833..482.2626 or fill out the form below to book your service now!

on a New High Efficiency System

on approved credit Call for details

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