Tankless Water Heater Service & Installation Phoenix, Arizona

Imagine never running out of hot water. Sounds great, doesn’t it.  That’s actually possible with tankless water heaters.  Gaining popularity in and around Phoenix since the late 1990s this “new” technology was common in Europe and Japan a decade sooner.  Sometimes called “instant” heaters, tankless water heaters are also known for their energy cost savings. ASAP Plumbing provides affordable tankless water heater services to all Phoenix, Chandler, Gilbert, Arizona, and surrounding areas. Schedule an appointment today.

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Licensed & insured 20+ years of repipe and plumbing experience

Tankless Water Heater Technology

Everyone’s used to tank water heaters.  A gas burner or electric resistance elements heat up a large tank (typically 40 gallons or more) and keep it hot until you’re ready to use it.  The burner can’t keep up, so if you use too much you run out of hot water and have to wait for the heater to recover.

Tankless technologies use a burner with a high-performance heat exchanger or an electric element matched to a flow rate (typically 3-10 GPM, gallons per minute) and heat only the water you use, as you use it.  Today’s showerheads use some 2-3 GPM, so you never run out of hot water.  Commercial installations can bank multiple units for just about any flow rate needed.  Without a big tank, these designs are also extremely compact.

Both gas and electric models are available, and they can be sized for a whole house or a single point of use.

Electric units don’t require venting and their small size means they can be installed right where you need hot water.  You’ll get it nearly instantly, without wasting time and water.  Plus up to some 30% in energy savings.

As with tank water heaters, gas models cost less to operate.  But they require an exhaust flue and often need an upgrade to a larger gas line.  So they’re most commonly used as whole-house heaters.  Energy savings can be as high as 30-40%, and hybrid models with a small tank can achieve an amazing 95% efficiency.

Need A Tankless Water Heater? We Can Help. (480) 336-9235


Let’s be honest.  These on-demand designs aren’t truly instant, but delivery is a matter of seconds if they’re installed in a kitchen or bath.  The total installed cost is much higher than traditional storage tank designs and the energy cost savings may not make up for the difference.  But if you qualify for federal tax credits or other incentives the balance could swing strongly in your favor.

Let’s summarize the clear benefits of tankless over tank types.

  • Heating Ability  – Properly sized, you’ll enjoy the continuous non-stop hot water.
  • Energy Efficiency  – A big tank continuously loses heat, no matter how much insulation it has.
  • Life Cycle Cost  – Annual maintenance is important to keep scale deposits under control.  But you can expect a 20-year lifetime (versus 8-15 years for standard designs), with warranties to match.
  • Safety – There’s no tank that could suddenly burst and flood.
  • Space Saving – Reclaim some garage or utility closet space.

Need A New Water Heater? We Can Help! (480) 336-9235

Why Choose ASAP Plumbing?

Our residential and commercial tankless water heater experts are ready to properly size and install a make and model that’s just right for your needs.  We use only quality manufacturers and guarantee our workmanship 100%.  We also maintain and repair tankless models as part of our full water heater repair services.  Whether for existing buildings, remodeling, or new construction our experience includes single-family homes, condominiums, apartments, and commercial buildings.

24/7 Availability

Plumbing emergencies don’t keep office hours. This is why we are available 24 Hours a Day 7 Days a Week & available for same-day service! You’re in safe hands from the moment you place that first call.

Professional Services

We’re in the business of making customers by taking care of them. From our dispatchers to our on-site Plumber’s, we’ll talk you through and then walk you through the entire plumbing process. Transparency is key to us developing a long-term relationship with our customers.

Plumbing & Drain Experts

Repiping or leaking water heaters? Blocked drains or a skyrocketing water bill? ASAP Plumbing has accumulated many years of experience there’s nothing we haven’t dealt with before. Quality workmanship & premium parts is a promise that we deliver on.

No Sticker Shock

At ASAP Plumbing, our prices are always fair and honest. And our technicians make sure to discuss them up-front, you approve the price before we do the work. You can relax knowing you pay the same price no matter how long the job takes.

Knowledgeable Technicians

Our technicians are all highly-skilled and trained to handle nearly any plumbing problem. We only hire hard working and reliable professionals. We also use our plumbing knowledge to educate our customers as well!

Financing Available

Don’t let plumbing repair costs stress you out! We offer a variety of payment options so you can pick what’s best for you.


Don’t let cost hold you back , we offer a number of financing options to help you. For a limited time receive 0% interest & NO PAYMENTS for 24 months 

  • Pre-Approval In Just Minutes
  • Soft Credit Pull
  • Up To 15 Years Payment Terms
  • Flexible Payment Options
  • Hassle-Free Plans
  • No Pre-Payment Penalty

ASAP Plumbing Arizona Team


Your home deserves the best! Our commitment to our customers is to provide the highest level of service on every single call. From the first call to the final handshake, you’ll enjoy working with us.


A fixture in our community, dedicated to serving our neighbors since 2014.


With ASAP Plumbing you get 24-Month Standard Labor Warranty & Lifetime Warranty on our Re-pipes.


We take the time to listen to your questions and concerns and work around your needs.


We are focused on educating our customers instead of pushing unnecessary services or products.