Water Heater Replacement Cost in St. Louis, MO
In St. Louis, MO, water heater replacement costs about $1,770 for one tank or tankless unit, installed, with most jobs from $1,120 to $3,530. That is 7% below the national typical price of $1,900.
Water Heater Replacement price range in St. Louis
| Low | Typical | High | |
|---|---|---|---|
| Price in St. Louis | $1,120 | $1,770 | $3,530 |
| US national price | $1,200 | $1,900 | $3,800 |
| Difference | -$80 | -$130 | -$270 |
Permit fees, disposal costs and contractor availability differ by city and can move the total. Local cost index used: 0.93 (1.00 is the US average).
What affects the price in St. Louis
- House or job size
- Material and quality grade
- Local labor rates
- Permits and inspections
The price covers one tank or tankless unit, installed. Typical project time is 2 to 6 hours. Expected life: 8 to 12 years tank, 15 to 20 years tankless.
How to get a fair price in St. Louis
- Collect at least three written quotes from licensed and insured Missouri contractors.
- Ask for the price split into labor, materials and permits.
- Check licenses with the Missouri state licensing board.
- Pay in stages tied to finished work, not all up front.
Frequently asked questions
How much does water heater replacement cost in St. Louis?
About $1,770, with a typical range of $1,120 to $3,530 for one tank or tankless unit, installed.
Is water heater replacement more expensive in St. Louis than average?
It is 7% below the national typical price.
Does the price include permits?
Sometimes. Ask your contractor whether permits, disposal and cleanup are in the quote.
Sources and method
- Bureau of Economic Analysis: regional price parities
- U.S. Bureau of Labor Statistics: Occupational Outlook Handbook
- Prices are modelled estimates, not quotes
Page last updated November 2026. See our editorial policy and disclaimer.