Tankless Water Heaters in Massapequa, NY

Endless Hot Water & High Efficiency

If you’re tired of running out of hot water, waiting for a tank to refill, or paying high utility bills, a tankless water heater may be the perfect upgrade for your home. At Absolute Air & Power, we specialize in tankless water heater installation, repair, and maintenance for homeowners in Massapequa, NY, and throughout Long Island.

Tankless systems heat water on demand — meaning endless hot water, superior energy efficiency, and a longer lifespan than traditional tanks.

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What Is a Tankless Water Heater?

A tankless (or “on-demand”) water heater heats water only when you need it — without storing it in a tank. This makes tankless systems far more efficient and reliable.

How tankless systems work:

No waiting. No storage tank. No running out of hot water.

Benefits of Tankless Water Heaters

Tankless systems offer major advantages over traditional tank water heaters.

Endless Hot Water

Perfect for large families or homes with simultaneous hot water use.

Lower Energy Bills

Tankless units only heat water when needed — reducing wasted energy.

Longer Lifespan

Most tankless systems last 20+ years, nearly double the life of a tank heater.

Compact, Space-Saving Design

Wall-mounted units free up valuable storage space.

Cleaner, Fresher Water

No rusty storage tank = no sediment contamination.

Reduced Risk of Leaks & Flooding

Tankless units have no storage tank that can burst.

Eco-Friendly Operation

Uses less fuel and reduces your carbon footprint.

Tankless heaters are a smart, long-term investment for your home.

Tankless Water Heater Installation in Massapequa, NY

Upgrading to tankless requires precise installation to ensure safety, peak performance, and proper venting.

Our tankless installation includes:

Home evaluation & proper sizing
Gas line, water line, and venting preparation
Electrical or gas modifications if needed
Installation of high-efficiency condensing or non-condensing tankless units
Full system testing & calibration
Homeowner education

We install top-quality tankless brands engineered for efficiency, reliability, and performance.

If your current tank is failing or you’re ready to upgrade to endless hot water, we’ll help you choose the perfect tankless system.

Tankless Water Heater Repair

Tankless systems are long-lasting, but they can still develop issues such as:

Temperature fluctuations

Low water flow

Ignition failure

Burner problems

Scale buildup

Sensor malfunctions

Exhaust blockages

Error codes

Our technicians diagnose and repair all tankless models quickly and accurately.
If you’re seeing error codes or losing hot water, we can fix it.

Tankless Water Heater Maintenance

Just like any high-efficiency equipment, tankless systems require regular maintenance — typically once per year.

Maintenance includes:

Full flush/descaling of the heat exchanger

Cleaning inlet screens & filters

Burner inspection

Venting inspection

Error code diagnostics

Temperature calibration

Checking sensors and gas lines

Annual maintenance prevents costly repairs and protects your investment.

Tank vs. Tankless — Which Should You Choose?

Choose Tankless If You Want:

Choose Tank If You Want:

If you’re unsure which is best, we’ll provide honest guidance based on your home, usage, and budget.

Why Choose Absolute Air & Power for Tankless Water Heater Services?

Homeowners trust us because we provide:

Local, family-owned service based in Massapequa
Licensed, insured, highly trained tankless specialists
Installations that follow all local codes and best practices
Honest recommendations — not pushy upselling
Fast repairs and reliable maintenance
Upfront pricing with no surprises
Emergency service available
Emergency service available
Clean, respectful, professional technicians

We ensure your tankless system delivers maximum comfort and efficiency.

What Our Clients Say

    
 
 
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   kelly schneid 
 
 
 
 Trustindex verifies that the original source of the review is Google. Tommy is the best! Life saver. Corrected a messed up system on the hottest weeks of the year!
  
 
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   Debra Rohl 
 
 
 
 Trustindex verifies that the original source of the review is Google. Absolute Air & Power did an outstanding job on the installation of my replacement air conditioning system. We have been using them for over 10 years. Tom and his team were great to work with. The technicians were professional, worked efficiently, and made sure everything was cleaned up before they left. Tom took the time to answer all my questions. Highly recommend Absolute  Air & Power for anyone looking for quality workmanship and reliable service.
  
 
      Posted on Google  
   
   Terry Moynihan 
 
 
 
 Trustindex verifies that the original source of the review is Google. A day after we closed on our house at the end of June, our central air unit crashed out. I called Tom that afternoon and he came first thing the next morning. Although not great news having to buy an entirely new central air system, Tom and his team made it happen in less than 5 days - not to mention during a heat wave! Couldn’t recommend them enough, will definitely be using them for future mishaps!
  
 
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   Christine Thearle 
 
 
 
 Trustindex verifies that the original source of the review is Google. I am beyond happy with the service I received from Tom and his team at Absolute Air & Power! From the first call I made to set up an estimate, to the estimate, to installation today everything was great! Everyone was professional, worked as a well oiled team and installed central air and a split in my basement. They arrived at 8am and by 3pm, everything was cleaned up and my house was nice and cool! My only regret is not calling them sooner!!
  
 
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   Kevin McGaheran 
 
 
 
 Trustindex verifies that the original source of the review is Google. 100% recommend. Team was organized & professional. Clockwork.  So worth the investment. Didn't realize how inefficient the system had been. Thanks fellas.
  
 
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   Ricky Wong 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have been using Absolute Air and Power for over 10 years for both my AC and Heating needs. Their yearly service plan is extremely reasonable and worthwhile to keep your system in tip top shape for all the seasons. I've had a new AC system recently installed by Tom and his team -again the work was extremely professional. Working with Tom, his son, team and office managers is a pleasure, and I would highly recommend AAP to anyone with concerns of working with a trustworthy professional HVAC service.
  
 
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   Adam Menkes 
 
 
 
 Trustindex verifies that the original source of the review is Google. Responsive, reliable and most of all everything was high quality. I needed a new central air unit and furnace and from the initial appt to the installation, my entire experience exceeded expectations. I don’t highly recommend many companies but this one “absolutely” earned it.
  
 
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   Margaret Vero 
 
 
 
 Trustindex verifies that the original source of the review is Google. I want to thank Absolute Air and Power for servicing my AC unit today.  They went above and beyond helping me, especially want to thank Samantha who actually went to pick up the part and Tom who installed it.
Thank you so much!

Tankless Water Heater Service Areas

We proudly install and service tankless systems in:

Schedule Tankless Water Heater Service in
Massapequa, NY

Whether you’re looking to install a new tankless system, repair an existing unit, or schedule annual maintenance, Absolute Air & Power has you covered.