Tankless Water Heater Installation Cost in Arizona

$1,350 – $4,350We estimate tankless water heater installation in Arizona at $1,350 to $4,350 for a whole-house tankless unit replacing a tank. The national estimate is $1,400 to $4,400. Arizona plumber pay is 3% below the national median, ranking 33 of 51.

Part of the job	Low	High
Parts and materials (our assumption)	$1,000	$3,000
Labor hours (our assumption)	5	10
Billed labor rate per hour	$75	$134
Estimated total	$1,350	$4,350

Our estimate, not a quote. Billed rate is the Arizona median wage from BLS (2025, $29.84 an hour) times 2.5 to 4.5 to cover payroll costs, overhead, travel and profit. How we estimate

What our assumptions are based on

Item	Sourced figure	Basis	Source
Labor hours	4 – 10	4 to 8 hours (This Old House); 6 to 10 hours (Fixr). Bob Vila says close to 3 hours; that figure is not in this range.	This Old House, Fixr

What other publishers report

National figures as published by each source, checked 2026-11-03. Their scope can differ from ours.
Publisher	Low	High	Scope
This Old House	$1,200	$3,500	Equipment and labor. Page dated June 2026.
Fixr	$2,500	$4,500	National average range, installed. Page dated January 2025.
Bob Vila	$1,333	$3,721	Installed, citing Angi and HomeAdvisor. Page dated October 2023.

Cities in Arizona

Metro area	Median wage	Low	High
Phoenix	$30.65	$1,400	$4,400

Compared with neighboring states

State	Median wage	Low	High
California	$35.01	$1,450	$4,600
Nevada	$29.62	$1,350	$4,350
New Mexico	$29.54	$1,350	$4,350
Utah	$29.76	$1,350	$4,350

Other plumber jobs in Arizona

Tankless Water Heater Installation cost in every state · Arizona home repair guide

Sources

U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics

General information, not professional advice. Conditions, codes and prices vary. Turn off power, gas or water before any work, and hire a licensed professional when in doubt. Cost figures are our estimates, not quotes.