Gas tankless water heater replacement cost in Indianapolis, IN
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 $2,900 installed in the Indianapolis area, 4% above the national figure, because plumbers here earn a median $37 an hour against $31 nationally.
Prices by size in Indianapolis
| Size | Low | Typical | High | National typical |
|---|---|---|---|---|
| About 150,000 BTU (1–2 bathrooms) | $2,100 | $2,750 | $3,650 | $2,650 |
| About 180,000–199,000 BTU (2–3+ bathrooms) | $2,650 | $2,900 | $4,000 | $2,800 |
Local labor: what plumbers earn here
| Hourly wage | Indianapolis metro | United States |
|---|---|---|
| 25th percentile | $29 | $24 |
| Median | $37 | $31 |
| 75th percentile | $47 | $41 |
The Indianapolis market
Current Indianapolis permit rules for replacing a water heater, furnace, AC or heat pump were not confirmed from official sources for this page, including the fee, who may file and whether an inspection follows. Contact the city's Department of Business and Neighborhood Services before work starts; Carmel, Fishers and other suburbs issue their own permits. DOE's Building America guide puts Marion County in cold climate zone 5A, so heating dominates. EIA's 2020 survey found 82% of Indiana homes heat with a furnace, 65% use natural gas and 81% have central air. Indiana is one of the few states whose federally funded rebates are open: the Indiana Energy Saver Program covers heat pump water heaters and heat pump HVAC for households under 150% of area median income.
A gas tankless heater gets no state rebate, since the state program covers heat pump water heaters and heat pump HVAC. In zone 5A, water enters the house cold in winter, which lowers a tankless unit's flow rate. Ask the installer to size for January. The gas line and venting changes are licensed-plumber work, so ask where the vent will exit and whether the meter can supply the burner.
Permits in Indianapolis
We couldn't confirm all of Indianapolis's rules from official pages. Check with the building department before work starts.
| Permit for this job | Not stated on the city pages we checked |
|---|---|
| Fee | Not stated on the city pages we checked |
| Who can pull it | Not stated on the city pages we checked |
| Inspection | Not stated on the city pages we checked |
Rebates in Indiana
HEAR: open. HOMES: open. Source: Indiana Office of Energy Development, checked October 13, 2026.
What these programs cover, and other states
Other systems in Indianapolis
- 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
- Indianapolis, IN permit source: Page content not retrievable
- DOE Building America: Guide to Determining Climate Regions by County
- Indiana Office of Energy Development: homeowner incentives
- 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, Indianapolis-Carmel-Greenwood, IN (47-2152 plumbers)
- DOE Gas-fired Instantaneous Water Heaters Final Rule TSD (Dec 2024), Table 8.2.6 (2023$)