Phoenix Valley water heater specialists

Tankless Water Heater Installation Across the Phoenix Valley

The Water Heater Bros install and replace tankless water heaters for homeowners across the Phoenix Valley, from Phoenix and Scottsdale to Chandler. Tyler and Cam size each unit to how your family actually uses hot water.

  • Licensed · AZ ROC 363269
  • Family-owned · owners do the work
  • Free water heater inspection
  • Free quote by phone or text

A tankless heater only works well if it is sized for the number of taps you run at once and how much it must warm the water. Undersize it and showers go lukewarm. We check your gas line, venting and power first, then give you a clear price by phone.

When to call about tankless water heater installation & replacement

Most people call about tankless because an old tank is failing or a tankless unit is worn out. Here are the signs it may be time.

Tap a sign to see what it usually means.

  • An aging tank is a good moment to weigh tankless, before a leak forces a rushed choice.

  • A tankless unit heats water as it flows, so it does not run out the way a tank does.

  • A wall-mounted tankless unit frees up the corner a tank used to fill.

  • That often means it was undersized for your home. A bigger or second unit may fix it.

  • If repairs keep coming back on an older unit, replacing it can cost less over time.

  • More fixtures change the flow your heater needs. It is easier to plan sizing during the remodel.

Not sure what size tankless your home needs? Call or text and Tyler or Cam will walk you through it. Call or text (602) 901-6418 · Mon–Sat, 8 AM–5 PM.

Timing and price, explained

Tankless-to-tankless swapOften 2–4 hoursWhen gas, venting and power already fit the new unit.
Tank-to-tankless conversionLonger than 2–4 hoursNew venting, a larger gas line or wiring adds time.
Sizing callA short phone callWe ask about bathrooms, fixtures and how your family uses water.

Which water heater fits your home?

Tank, tankless and heat pump heaters each suit different homes. Answer four questions to see which type to look at first.

How many people live in your home?
Do you have natural gas at the house?
Where does the heater sit?
What matters most to you?

A starting point, not a quote. We check your gas line, venting, power and space before recommending anything.

How our tankless water heater installation & replacement works

  1. 1

    Talk through your hot water use

    Call or text. We ask how many showers and appliances run at once.

  2. 2

    Check gas, venting and power

    We confirm your gas line size, where the exhaust vent can go and whether your electrical supply fits the unit.

  3. 3

    Clear price before work starts

    You get one clear price and an explanation of the manufacturer warranty before anything is installed.

  4. 4

    Tyler or Cam do the install

    The owners mount the unit, run the vent, and connect gas and water. Ask about service valves, which make descaling easier.

  5. 5

    Test and walk you through it

    We run several taps at once and show you the controls and filter.

Talk to the owners about tankless water heater installation & replacement

Call or text for a free quote by phone. Tyler or Cam will answer your questions. Mon–Sat, 8 AM–5 PM.

Why homeowners choose The Water Heater Bros

The owners do your install

Tyler and Cam size, install and test every tankless unit themselves. No hand-offs to strangers.

Sized by flow, not guesswork

We size by gallons per minute and temperature rise, so showers stay hot with the dishwasher running.

Lower pricing, explained

We bulk-order from a small group of manufacturers and only buy water heater tools. You keep the savings.

Licensed and accountable

AZ ROC 363269. Manufacturer warranty on installs, and we stand behind our workmanship.

What Phoenix Valley homes need to know

Water coming into Phoenix Valley homes changes with the seasons. In summer it arrives warm, so a tankless unit barely works. In winter it comes in cooler, and the heater must warm it much more. We size for winter, so January showers stay hot.

Hard water is the other local factor. Minerals build up inside the heat exchanger, the part that warms the water. Service valves on the water lines make that yearly descaling much quicker.

Common Questions

What size tankless water heater do I need for a house in the Phoenix Valley?

It depends on how many fixtures run at once and how much the water must be warmed. Count your showers, the dishwasher and the washer. Phoenix Valley water is cooler in winter, so size for winter, not summer. Tyler or Cam can help you size it in a short call or text.

Is tankless worth it in Phoenix with hard water?

Tankless can work very well here, but hard water means it needs care. Minerals coat the inside of the unit over time. A yearly descaling, about an hour of work, keeps it running well. If you won't keep up with that, we'll say a tank may suit you better.

Can I switch from a gas tank to a gas tankless heater in Mesa or Chandler?

Usually yes, but it is more work than a straight swap. Tankless units burn more gas at once, so the gas line may need upsizing. They also need their own vent. We check both before we quote, so you know the full scope and price before any work starts.

Frequently Asked Questions

A swap from one tankless unit to another often fits our standard 2–4 hour window. Converting from a tank usually takes longer because of venting, gas line or electrical work. We give you the expected time when we quote, so you can plan your day.

It will not run out the way a tank does, but it has a flow limit. If too many taps run at once, the water cools. That is why sizing matters. We pick a unit that covers your busiest hour, not an average one.

Often, yes. A tankless unit burns a lot of gas for short bursts, and older homes may have lines sized for a tank. We check the line size before we quote, and any upsizing is listed in your quote up front.

Most Phoenix Valley homes with gas already in place do best with gas tankless. Electric tankless units need a large amount of power, and many homes cannot supply it without electrical upgrades. We look at what your home has and give you an honest comparison by phone.

Yes. We disconnect and remove the old tank as part of the job. You also get the floor space back, since most tankless units mount on a wall. We cap the old connections neatly and leave your garage or closet clean.

Ready for tankless water heater installation & replacement you can trust?

Call or text Tyler or Cam for a free quote by phone. We work with homeowners across the Phoenix Valley, from Peoria and Glendale to Mesa and Chandler.

Call or text (602) 901-6418Send us a message

Mon–Sat 8 AM–5 PM · Sunday closed · Arizona time