Gas tankless water heater replacement cost in Las Vegas, NV
Installed, About 180,000–199,000 BTU (2–3+ bathrooms)
A typical tankless water heater (About 180,000–199,000 BTU (2–3+ bathrooms)) costs about $2,750 installed in the Las Vegas area, 2% below the national figure, because plumbers here earn a median $29 an hour against $31 nationally.
Prices by size in Las Vegas
| Size | Low | Typical | High | National typical |
|---|---|---|---|---|
| About 150,000 BTU (1–2 bathrooms) | $2,000 | $2,600 | $3,500 | $2,650 |
| About 180,000–199,000 BTU (2–3+ bathrooms) | $2,550 | $2,750 | $3,850 | $2,800 |
Local labor: what plumbers earn here
| Hourly wage | Las Vegas metro | United States |
|---|---|---|
| 25th percentile | $23 | $24 |
| Median | $29 | $31 |
| 75th percentile | $42 | $41 |
The Las Vegas market
The City of Las Vegas issues water heater and HVAC replacement permits online without plans. Its permit list includes "Water Heater (Same for same only including Tankless)" and "HVAC exact change outs/repairs," and the permit is issued at the end of the online submission. Either a licensed building contractor or a residential owner-builder can apply, and inspections are booked at LasVegasNevada.gov/ScheduleInspection. Fees were not published in the pages reviewed, so check the city's fee schedule. Henderson, North Las Vegas and unincorporated Clark County each run their own building departments. DOE's Building America guide puts Clark County in hot-dry climate zone 3B, and EIA's 2020 survey found 78% of Nevada homes have central air, 68% heat with natural gas and 67% heat water with gas.
A tank-to-tankless switch changes the venting and the gas pipe sizing, which moves it past a same-for-same swap. With most homes here already on gas, a gas tankless unit is the usual choice, and resizing its gas line is a job for a licensed plumber. Ask where the vent will exit and whether the meter can supply the burner. Ask about isolation valves too, so the unit can be descaled without cutting into pipes later.
Permits in Las Vegas
| Permit for this job | Yes (source) |
|---|---|
| Fee | Not stated on the city pages we checked |
| Who can pull it | Homeowner (Residential Owner Builder) or licensed contractor |
| Inspection | Yes (inspection scheduling provided for these permits) |
Rebates in Nevada
HEAR: announced, not open yet. HOMES: announced, not open yet. Source: Nevada Governor's Office of Energy, checked October 13, 2026.
What these programs cover, and other states
Other systems in Las Vegas
- Gas tank water heater
- Gas furnace
- Central air conditioner
- Heat pump (ducted, outdoor unit + air handler)
Gas tankless water heater cost in other metros
Sources
- Las Vegas, NV permit source (water heater permit)
- Las Vegas, NV permit source (who can pull)
- Las Vegas, NV permit source: Building fee table effective July 1, 2021; no MEP line
- Las Vegas, NV permit source: Fee schedule documents and Tankless Water Heater
- DOE Building America: Guide to Determining Climate Regions by County
- Nevada Governor's Office of Energy: funding opportunities
- EIA RECS 2020: Highlights for space heating fuel in U.S. homes by state
- EIA RECS 2020: Highlights for space heating in U.S. homes by state
- EIA RECS 2020: Highlights for air conditioning in U.S. homes by state
- EIA RECS 2020: Highlights for water heating in U.S. homes by state
- BLS OEWS May 2025, Las Vegas-Henderson-North Las Vegas, NV (47-2152 plumbers)
- DOE Gas-fired Instantaneous Water Heaters Final Rule TSD (Dec 2024), Table 8.2.6 (2023$)