Gas tank water heater replacement cost in Phoenix, AZ
Installed, 50 gallon, standard vent
A typical gas water heater (50 gallon, standard vent) costs about $2,000 installed in the Phoenix area, about the same as the national figure, because plumbers here earn a median $31 an hour against $31 nationally.
Prices by size in Phoenix
| Size | Low | Typical | High | National typical |
|---|---|---|---|---|
| 40 gallon, standard vent | $1,700 | $1,900 | $2,450 | $1,900 |
| 50 gallon, standard vent | $1,750 | $2,000 | $2,600 | $2,000 |
| 75 gallon, standard vent | $2,500 | $2,800 | $3,350 | $2,800 |
| 40 gallon, power vent | $2,500 | $2,750 | $3,200 | $2,750 |
| 50 gallon, power vent | $2,650 | $2,850 | $3,450 | $2,850 |
Local labor: what plumbers earn here
| Hourly wage | Phoenix metro | United States |
|---|---|---|
| 25th percentile | $26 | $24 |
| Median | $31 | $31 |
| 75th percentile | $44 | $41 |
The Phoenix market
Phoenix's Planning and Development Department is unusually permissive about replacements. Its residential permit page lists water heater replacements done by a licensed contractor among projects that do not need a permit, while a DIY electric water heater replacement does. The page does not address DIY gas replacements. Air conditioner repairs or replacements that do not increase size and capacity or change location also need no permit. Furnaces and heat pumps are not addressed, and no fee was found for the DIY permit. The flip side: with no permit, no city inspector checks the work, so the contractor's license is your main protection. Cooling defines the market here, with EIA finding 94% of Arizona homes use air conditioning and a quarter heat with a heat pump. Mesa, Chandler, Scottsdale and other valley cities set their own rules.
Arizona homes lean electric for water heating (55% in EIA's survey) with gas at 40%. Garage installs are common, so ask the installer to confirm the drain pan and relief line routing. A Phoenix garage in summer is an oven, which suits a heat pump water heater that pulls warmth from the air. Ask for a price on one alongside a standard tank, and ask whether haul-away of the old tank is included.
Permits in Phoenix
| Permit for this job | No when replaced by a licensed contractor; yes for DIY electric water heater replacement (source) |
|---|---|
| Fee | Unclear (none needed for the exempt contractor replacements; no fee figure found for DIY electric water heater permit) |
| Who can pull it | Unclear (exemption hinges on use of a licensed contractor; applicant eligibility for DIY permit not stated) |
| Inspection | Yes when a permit is required (generic); none for exempt replacements |
Rebates in Arizona
HEAR: status unclear. HOMES: status unclear. Source: Arizona Governor's Office of Resiliency (energy programs), checked October 13, 2026.
What these programs cover, and other states
Other systems in Phoenix
- Gas tankless water heater
- Gas furnace
- Central air conditioner
- Heat pump (ducted, outdoor unit + air handler)
Gas tank water heater cost in other metros
Sources
- City of Phoenix: Residential permits
- Arizona Governor's Office of Resiliency
- EIA, 2020 RECS: Highlights for space heating in U.S. homes by state
- EIA, 2020 RECS: Highlights for water heating in U.S. homes by state
- EIA, 2020 RECS: Highlights for air conditioning in U.S. homes by state
- https://pddonline-test.phoenix.gov/Permits/Instructions/35
- BLS OEWS May 2025, Phoenix-Mesa-Chandler, AZ (47-2152 plumbers)
- DOE Consumer Water Heaters Final Rule TSD (Apr 2024), Table 8.2.7 (2022$); labor share from App. 8D (3.75 h + trip, $420 of $791)