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Tankless Water Heater Installation near you in Phoenix and the salt river valley

Tankless Water Heater Installation & Replacement

When you need a new tankless water heater, you want peace of mind that it will be installed correctly. Our highly trained plumbers always provide safe, high-quality installations, and they’ll help you choose the right unit for your household’s hot water needs.

A tankless water heater installed incorrectly, or sized wrong for your home, won’t deliver the endless hot water it’s supposed to. Getting the flow rate, fuel type, and unit count right the first time is what determines whether you get the benefits tankless systems are known for.

Tankless water heaters have become increasingly popular in Phoenix-area homes for good reason: they take up less space than a traditional tank, don’t run out of hot water during back-to-back showers, and can lower energy costs since they only heat water on demand rather than keeping a full tank hot around the clock. The tradeoff is a higher upfront cost and more specific sizing requirements, which is exactly where getting professional installation right matters most.

Tankless water heater inside a customers home in Maricopa County Arizona

We also Offer:

  • Upfront, honest pricing
  • 100% satisfaction guarantee on all of our work
  • Fair and honest pricing
  • 4.7 star rating on Google…
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On this page:

What’s Included

Your tankless water heater installation includes:

Professional recommendations

Choosing a tankless unit with the correct flow rate for your hot water needs can be confusing. Don’t worry, we can help. Our plumbers assess your normal hot water usage, including how many bathrooms and appliances run at once during peak times, then match you with a correctly sized tankless unit rather than a generic recommendation.

Upfront Pricing

Before we do any work, we’ll give you an honest price upfront, and we’ll stick to that same price when we give you the bill.

Flexible Financing Options

Worried that this new water heater is going to break your budget? We can help with flexible financing.

100% Satisfaction Guaranteed

If you’re not totally happy with our installation work the first time, we’ll redo the job on our own dime.

Tankless water heater inside a customers home in Maricopa County Arizona

Factors That Affect Your Tankless Water Heater Installation Cost

There are four main factors in tankless water heater installation or replacement costs:

  • Water heater type: Whole-home tankless units provide hot water to every plumbing fixture in your home, while point-of-use (POU) units only serve a single appliance or area, like the kitchen or laundry room. Some homes just need one whole-home unit. Others need a whole-home unit paired with multiple POU units to support fixtures too far from the whole-home unit, or fixtures with high flow rates, like a shower. The more units your home needs, the more you’ll pay.
  • Fuel type: Natural gas tankless units cost more upfront than electric tankless units, but they’re also cheaper to operate, which means lower energy bills over time.
  • Flow rate: Flow rate refers to how many gallons of hot water a unit can provide per minute. The higher the flow rate, the more expensive the unit. Our plumbers help you determine the flow rate your household needs.
  • Labor factors: If your plumber needs to add a gas line or modify your home’s existing plumbing, the cost to install your tankless unit increases.

Choosing the Best Tankless Water Heater for Your Home

There’s no single tankless water heater that’s the best fit for every home. The right choice depends on your household’s hot water usage, whether you need a whole-home unit or a combination with point-of-use units, and your fuel type preference. Rather than recommend one model across the board, our plumbers assess your specific usage and recommend the tankless system that fits your household.

Frequently Asked Questions

What does a tankless heater change day to day?

Hot water that does not run out, floor space back, and energy spent only when water is flowing. The trade is a higher upfront install and more sensitivity to maintenance in hard water.

Can a tankless unit replace my tank in the same spot?

Frequently, though gas line sizing, venting, and condensate routing often need upgrades, because tankless units burn hotter in bursts than tanks do. That infrastructure work is the heart of a quality install.

Why does tankless sizing matter so much?

A tankless unit heats on demand, so it must keep up with the fixtures running at once. Undersizing shows up as lukewarm showers on busy mornings, and sizing to the household’s peak demand is what prevents it.

How does hard water affect tankless equipment?

Scale builds inside the heat exchanger and chokes performance, faster here than most places. Annual descaling flushes, and softening or filtration upstream, are what keep a Valley tankless unit at full strength.

Do tankless heaters work for large households?

Yes, sized correctly, and larger homes sometimes run two units or pair tankless with recirculation for distant bathrooms. The design conversation is where those needs surface.

A service technician walking a customer through what's included in the service that is being provided

How Scheduling Works

Schedule Your Appointment in 3 Steps

1) Book The Appointment

First, contact the friendly and knowledgeable staff members at Patrick Riley | Isley’s! You can call us at (928) 255-1040 or schedule an appointment through our website. We service all of the Phoenix Metro area, including Mesa, Chandler, Gilbert, and the surrounding Salt River Valley areas.

2) Choose a Day and Time

We value your time, and that’s why we offer flexible scheduling options. Once you get in touch with us, our team will work with you to find a day and time that suits your schedule. Whether you prefer a weekday, weekend, morning, or afternoon appointment, we’ll make it happen.

3) Get a Reminder Call

When you book with Patrick Riley | Isleys, you won’t have to worry about when we’ll arrive at your door. We always provide a 30-minute courtesy call so you can have time to square away any pets and get ready for our arrival.

Ron, a Patrick Riley Services licensed technician, completing an invoice for a customer.

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