Built for Flagstaff winters
Frozen pipes at 6,909 ft, water heaters that work hard all winter, and Northern Arizona’s hard water — we know your climate.
Tankless Water Heaters in Flagstaff
Tankless works here when it’s set up for here
A tankless heater fires only when you open a tap, so there’s no tank to keep hot all day and no running out halfway through a shower. At 6,909 feet, though, the setup matters. Thinner air changes how a gas burner combusts, and winter supply water that arrives 20 to 30 degrees colder than in the Valley asks a lot more of the heat exchanger. Undersize the unit or skip the altitude adjustments and you get error codes and lukewarm showers.
Our plumbers size each system to your peak demand, confirm the gas supply and venting can carry it and set the unit up for elevation. Larger homes may need two units working together. Because our water is hard, we also descale heat exchangers and clean inlet filters every year, and many owners pair the system with a water softener to cut scale at the source.
- Altitude Setup Burner and combustion settings adjusted for elevation.
- Hot Water on Demand No tank to run dry during back-to-back showers.
- Yearly Descaling Heat exchangers flushed to keep hard-water scale out.
Upgrade or Service?
Reasons to go tankless or call for service
Some point to an upgrade from your old tank, others to a tankless unit that needs attention.
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Running Out of Hot Water
A tank that can’t keep up with your family’s mornings.
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Need the Floor Space
A wall-mounted unit frees up a closet or utility corner.
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Old Tank Near Its End
Replacing anyway is the natural time to consider tankless.
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Error Codes on Your Unit
Flame failures and lockouts often trace to venting or altitude settings.
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Temperature Swings
Hot-cold-hot showers can mean a scaled exchanger or flow sensor.
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No Heat After a Freeze
A frozen line or intake can shut a unit down in winter.
Tankless Services
Tankless installation, service and repair
Full support for on-demand hot water, from sizing to the yearly flush.
- Sizing & Installation Units matched to your peak flow and winter inlet temperature.
- Tank-To-Tankless Conversion Gas supply, venting and controls updated for the new unit.
- Whole-Home Systems Two units in parallel for larger homes with several baths.
- Descaling & Filter Cleaning Annual flush of the heat exchanger and inlet screen.
- Tankless Repair Ignition, flow sensor, flame and error-code problems diagnosed.
- Tankless Replacement Aging on-demand units swapped for current models.
How It Works
How a tankless install comes together
Planning matters most, so that’s where we start.
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Measure Your Demand
We count fixtures and look at how your household uses hot water.
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Check Gas and Venting
We confirm the home can supply and vent the unit safely.
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Written Price
You approve the unit, the work and the cost first.
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Install and Calibrate
We set the unit up for altitude and test every outlet.
Flagstaff crews. Mountain‑tough service.
Why Flagstaff homeowners choose Element
Local to Northern Arizona
A real office on East Huntington Drive and crews serving Flagstaff, Sedona, Williams, Doney Park and Chino Valley — not a call center.
Licensed in Arizona
Arizona ROC 362018, with every job backed by our full service guarantee.
Here 24/7
Burst pipe at 2 a.m. or no hot water on a snowy Sunday — a real plumber answers the call.
Thinking about tankless?
Talk to our Flagstaff plumbers about sizing, setup and yearly descaling.
Maintenance Membership
Ready for Flagstaff’s mountain winters.
Seasonal checkups for every system in your home.
Seasonal checkups catch small problems before they become emergencies — and keep your systems running efficiently all year.
- Annual whole-home plumbing inspection
- Water heater flush & safety check
- Priority scheduling for members
- Member savings on repairs
Tankless water heater questions from Flagstaff
Does a tankless heater work at Flagstaff’s altitude?
Yes, when it’s set up correctly. Gas units need combustion and burner adjustments for thinner air, and the unit must be large enough to heat very cold winter supply water at the flow rate you need. We handle both during installation so you don’t end up with error codes on the first cold morning.
Gas or electric tankless: which is better here?
Gas is the more common choice in Flagstaff because it delivers higher flow, which matters in a house with several bathrooms and very cold incoming water. Electric units can suit smaller homes or single fixtures. We’ll look at your existing supply and household needs, then recommend the type that fits and price it.
How often does a tankless unit need service?
Once a year in our hard water. Minerals collect inside the heat exchanger, and over time that causes error codes, lower efficiency and a shorter life. A yearly descaling and inlet filter cleaning keeps it running well. Our maintenance plan can take care of the scheduling for you.
How long do tankless water heaters last?
A well-maintained tankless unit typically outlasts a tank heater, often reaching 15 to 20 years, compared with roughly 8 to 12 for a tank. That longer life depends on keeping scale under control. If yours is aging or failing, we can repair it or price a replacement.
Can I finance a tankless installation?
Yes. A tankless system costs more up front than a tank, especially when venting or gas supply needs updating. Financing can spread that out. You’ll always receive a written price before work starts, estimates are free, and the installation is backed by our full service guarantee.
*Offers cannot be combined with other promotions or applied to dispatch fees. No cash value. Must present offer at time of service. Call for details.