A water heater is one of the larger plumbing purchases a homeowner makes, and it runs every day for the next 8 to 12 years. In Phoenix, that unit works against municipal water measuring 12 to 20 grains per gallon. That mineral load is hard enough to build sediment in a new tank and coat a tankless heat exchanger with scale within the first year. How long the unit lasts depends on decisions made at install time: sizing it correctly for your household and getting every connection right so the warranty holds and the unit runs efficiently.
The installation covers more than swapping one unit for another. We drain and remove the old water heater, then make all the connections: water supply lines, gas flex or electrical whip, T&P relief valve with its discharge pipe routed to a safe termination point, expansion tank, drain pan, and shut-off valve. Gas units also require flue or vent connections. On a tank-to-tankless upgrade, the scope expands to include gas-line upsizing and new venting. Old-unit disposal is part of every job.
If you are weighing tank versus tankless, our tank vs tankless guide walks through the performance and cost tradeoffs for Phoenix homes. For a breakdown of what drives total installed price, see what determines water heater cost. Call 602-560-8989 for a free in-home estimate and a flat-rate quote before any work starts.
What We Handle
Our Process
Survey and Size
We walk your existing setup: gas-line diameter, vent type, electrical capacity, and unit placement. Then we size the replacement for your household's hot-water demand. Phoenix incoming water temperature swings from the mid-40s in January to the mid-70s in summer, and that range affects both tank recovery time and tankless flow rate. We size for the coldest month so the unit performs year-round.
Quote
You get a flat-rate quote covering the unit, all materials and connections, labor, and old-unit disposal. The price holds even if the job runs longer than expected. If the assessment reveals additional work like a gas-line upsize or panel upgrade for a tankless conversion, that goes in the quote before we start.
Install and Verify
We shut off the fuel source and cold supply, drain and remove the old unit, and make every connection on the new one. After the install, we set the thermostat to 120 degrees, run hot water at multiple fixtures, check every joint for leaks, and confirm the unit reaches setpoint and recovers properly. We walk you through the annual maintenance your new unit needs, including flush intervals and anode rod checks for tank heaters.
Frequently Asked Questions
For tank units, household size is the starting point. One to two people generally need 40 gallons, three to four need 50, and five or more need 50 to 80. Gas tanks recover faster than electric for the same capacity, so a gas 40-gallon tank can serve a household that would need a 50-gallon electric. The metric professionals use is the first-hour rating, which measures how many gallons the unit delivers during peak demand, not just how much it holds. For tankless units, sizing is about flow rate in gallons per minute, and Phoenix's incoming water temperature swing, mid-70s in summer down to the mid-40s in January, affects how much hot water a given unit produces at full flow. We size for January conditions.
A straightforward tank replacement typically takes two to three hours from arrival to walkthrough. Tankless installations and fuel-type conversions run longer, generally four to six hours, because they involve additional venting, gas-line work, or electrical runs. If the unit is in stock, same-day replacement is typical for a failed tank heater.
The flat-rate price covers draining and removing the old unit, setting the new one, making all water and fuel connections, installing the T&P relief valve and its discharge pipe, adding the expansion tank and drain pan, and verifying the shut-off valve. Gas units include flue or vent connections. We haul off and dispose of the old unit. If the project requires work beyond a standard replacement, such as a gas-line upsize or new electrical service for a tankless unit, that is quoted separately before we begin.
Yes. At 12 to 20 grains per gallon, Valley water builds sediment inside tank heaters that insulates the burner or element from the water, forcing the unit to work harder and shortening its life. In tankless units, the same minerals coat the heat exchanger and restrict flow until the unit locks out. A whole-home water softener installed at the same time slows the scale buildup and helps both types last closer to their rated life. We can bundle a softener installation with the water heater since the plumber is already on site.
If the issue is a failed part like a thermocouple, heating element, or anode rod, a repair is usually the better call on a unit that still has years of useful life. We diagnose the problem and give you the repair cost alongside the replacement cost so you can weigh both options. We do not push replacement when a repair makes sense, and we will tell you when a repair is not worth the money on an older or corroded unit.
Yes. We install gas condensing tankless units and electric tankless units for homes without a gas line. A tankless installation involves more work than a tank swap because the unit needs dedicated venting, or new electrical runs for electric models, and often a larger gas supply line. We assess all of that during the estimate so the quoted price reflects the full scope of work.