Tankless Water Heater Installation in Flagstaff, AZ
We install Rinnai, Navien, Noritz and Rheem tankless water heaters in Flagstaff, AZ with proper sizing, clean venting and isolation valves for easy descaling.
- Same-Day Estimates Available
- Factory-Trained Installers
- Gas Line Upgrades Included
- Descaling Valves Installed
Switch to a Properly Sized Tankless Water Heater in Flagstaff, AZ.
Call today for a flat-rate tankless installation quote that includes gas, venting and water connections.
Tankless Water Heater Installation in Flagstaff, AZ Sized for Your Home
CVR Plumbing installs tankless water heaters that heat water on demand instead of keeping a large tank hot all day. We calculate peak flow in gallons per minute, check incoming water temperature and confirm your gas supply can handle up to 199,000 BTU. Then we install the unit, venting and isolation valves to manufacturer specs.
Our expertise includes:
- Condensing and non-condensing gas tankless units with PVC or stainless venting
- Gas line upsizing and meter capacity checks for high BTU demand
- Isolation valve kits and scale filters for hard water protection

Additional Plumbing Installation Services in Flagstaff, AZ
We install water heaters, pumps, lines, and fixtures across Flagstaff, AZ with careful, permitted work that passes inspection the first time.

Customers
Why Choose CVR Plumbing for Tankless Water Heater Installation in Flagstaff, AZ?
A tankless water heater only performs if it is sized, vented and supplied correctly. We do the math on flow rate, temperature rise and gas load before recommending a model.
- Accurate Sizing, We match the unit's flow rate to your fixtures and incoming water temperature.
- Gas Done Right, Gas lines are upsized when needed so the heater never starves for fuel.
- Scale Protection, Isolation valves and scale filters protect the heat exchanger from hard water.
Citywide Coverage
No matter where your home is in Flagstaff, we can plan a tankless install that fits your layout and gas service. We also handle conversions from attic tanks to wall-mounted units.
Experienced Team
Our plumbers are trained on major tankless brands and understand how each handles venting, condensate and gas pressure. They configure settings and recirculation options on site.
Safety-First Approach
We pressure test new gas piping, check gas pressure under full load and confirm every joint is tight. Permits and inspections are handled for every tankless installation.
Trusted Certified Flagstaff Plumbing Services Professionals
At CVR Plumbing, we take pride in providing certified plumbing services throughout Flagstaff, AZ. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver long-lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationEfficient Tankless Water Heater Installation Services in Flagstaff, AZ
Gas Tankless Water Heater Installation in Flagstaff
Gas tankless units offer the highest flow rates and are the most popular choice for whole-home hot water. Condensing models reach high efficiency and vent with PVC, while non-condensing models use stainless steel vent pipe. We mount the unit, connect gas, water and venting, and install isolation valves for flushing. Each unit is fired, checked for proper gas pressure and tested at multiple fixtures.

Electric Tankless Water Heater Installation in Flagstaff, AZ
Electric tankless heaters suit homes without gas service or point-of-use applications like a casita or distant bathroom. Whole-home electric units can require multiple 40 to 60 amp breakers, so we confirm your electrical panel has capacity. Warm Arizona groundwater helps electric units perform better than in colder climates. We coordinate with your electrician when panel upgrades are needed.
Tank to Tankless Conversions in Flagstaff
Converting from a tank requires more than swapping units. A 40 gallon tank heater uses roughly 40,000 BTU, while a whole-home tankless unit may need up to 199,000 BTU, so the gas line usually needs to be upsized. Venting changes from a metal flue to PVC or stainless, and the unit moves to a wall location. We remove and haul away your old tank and patch the old flue penetration.
Rinnai, Navien and Noritz Installation in Flagstaff, AZ
We install leading tankless brands including Rinnai, Navien, Noritz and Rheem. Rinnai offers a wide model range and strong parts support, while Navien condensing units often include built-in recirculation pumps. Noritz is known for durable commercial-grade heat exchangers. We help you compare models based on flow rate, efficiency and warranty.
Recirculation Systems for Tankless Heaters in Flagstaff
Tankless heaters can take a few extra seconds to deliver hot water to distant fixtures. A recirculation pump or dedicated return line keeps hot water close to faucets, cutting wait time and water waste. Some units have built-in pumps with smart scheduling. We design the system to fit your plumbing layout and usage patterns.
Hard Water Protection for Tankless Units in Flagstaff, AZ
Arizona water is very hard, and calcium scale is the leading cause of tankless heater failure. Scale coats the heat exchanger, reducing efficiency and triggering error codes. We install isolation valves so the unit can be flushed with a vinegar or descaling solution once a year. A scale inhibitor cartridge or whole-home softener provides extra protection.
Commercial Tankless Water Heater Installation in Flagstaff
Restaurants, salons and small offices benefit from tankless systems that deliver continuous hot water without a large storage tank. High-demand sites often use multiple units linked on a rack system for redundancy and capacity. We size the system based on peak demand and install gas, venting and controls to code. Linked units can rotate operation to balance wear.

Tankless vs Tank Cost Comparison in Flagstaff, AZ
Tankless installation costs more upfront than a standard tank because of the unit price, gas line upgrades and venting changes. Over time, lower standby energy losses and a longer expected lifespan offset part of that cost. Tankless units often last 15 to 20 years with proper descaling, compared with about 8 to 12 years for many tanks in hard water areas. We give you a side-by-side quote so you can decide what fits your budget.
Tankless Water Heater Installation Near Me in Flagstaff, AZ
If you are searching for tankless water heater installation near me, our local team can visit, measure and give you a firm quote. We check your gas meter, line size and venting options during the same visit. Many installs are scheduled within a few days.
Our plumbers install tankless heaters in Flagstaff regularly and know local permit and inspection requirements. We stock common models and parts to keep projects moving. You get a clean, professional installation and clear instructions on maintenance.
CVR Plumbing at a Glance
- Licensed and insured plumbers serving Flagstaff, AZ
- 24/7 emergency service with same-day scheduling
- Clear written estimates, no hidden fees
- 4.8-star rated by 713+ Arizona customers
Flagstaff Map
Flagstaff Information
- Population
- 76,586
- Area codes
- 928/520/480
- Service area
- Flagstaff and communities within 40 miles
- Nearby
- Prescott Valley, Peoria, Scottsdale, Phoenix
Warm incoming groundwater helps tankless units perform well in Flagstaff, AZ, but very hard Arizona water makes proper installation with descaling valves essential for a long service life.
Expert Services
Trust our professionals for reliable CVR Plumbing solutions in Flagstaff, AZ.
Our Specialized Plumbing Services in Flagstaff, AZ
At CVR Plumbing, we provide a complete range of plumbing services across Flagstaff, AZ. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Tankless Water Heater Installation Process Works in Flagstaff, AZ
We follow a clear process so your tankless installation is sized right, installed safely and ready to use.
Request a Quote
Call (928) 470-9009 to schedule a site visit. We assess your fixtures, gas supply and venting options, then give you a written quote.
Install and Upgrade
We remove your old heater, upsize gas lines if needed and mount the new unit. Venting, water connections and isolation valves are installed to manufacturer specs.
Test and Train
We fire the unit, check gas pressure and test hot water at multiple fixtures. Then we show you how to flush the system and register your warranty.
Frequently Asked Questions About Tankless Water Heater Installation in Flagstaff
Most gas tankless installations cost $3,000 to $6,500 including the unit, labor, venting and typical gas line upgrades. Electric units can be less, though panel upgrades can add $1,000 to $3,000.
We install Rinnai, Navien, Noritz and Rheem tankless water heaters. Each brand offers different features, efficiency levels and warranties.
With annual descaling, tankless units often last 15 to 20 years. Skipping maintenance in hard water areas can shorten that significantly.
Size depends on how many fixtures run at once and your incoming water temperature. Many Arizona homes need a unit rated around 7 to 10 gallons per minute.
Tankless installs involve gas line sizing, venting, electrical and permits, so most homeowners hire a licensed plumber. DIY installs may void the manufacturer warranty.
A straight replacement takes four to six hours. Tank to tankless conversions with gas and venting changes usually take a full day.
Yes, a permit is typically required because the job involves gas, venting and water connections. We pull the permit and schedule the inspection.
Many manufacturers offer 10 to 15 year heat exchanger warranties and shorter coverage on parts. We also warranty our installation labor.
What People Are Saying About Our Plumbing Experts?

James P.
Our commercial plumbing system had a leak under the sink, and CVR Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Flagstaff, AZ
Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · Glendale, AZ
Emily R.
I called CVR Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Glendale, AZ
Mark T.
When our office needed drain cleaning, CVR Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Flagstaff, AZ
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Flagstaff, AZ
Patricia H.
We had a slab leak that two other companies could not find. CVR Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Glendale, AZ













