Storage tank
$1,600–$2,400Typical cost, including installation
WATER HEATER REPLACEMENT IN ST. PETERS
St. Peters Water Heater
Replacement
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See what replacement costs ↓ST. PETERS AT A GLANCE
Replacing a water heater in St. Peters.
St. Peters issues its own plumbing permits on CitizenServe, and the city says a water heater replacement needs just one inspection. The fee is 0.70% of the job's value, with a $25 minimum for one-inspection permits for residents. Plumbers need a St. Charles County license. Spire supplies gas, and electricity comes from Ameren Missouri or Cuivre River Electric. City water mixes Missouri River water with lime-softened well water.
- Permit to replace with the same type
- Yes · City of St. Peters Building and Engineering (Building Commissioner's Office)
- Permit fee
- Based on job value: 0.70% of the construction value for permits without plan review, with a $25 minimum for small permits for residents that need one inspection ($50 minimum otherwise). Appendix A as changed by Ord. 8080 (12-19-2024), code supplement March 2025. Starting work before the permit is issued adds a $50 penalty.
- Who gets the permit
- Plumbing contractors must pass a test and be licensed by St. Charles County. City code says a homeowner working on an existing home they own and live in doesn't need a plumbing license.
- Electric utility
- Ameren Missouri and Cuivre River Electric Cooperative
- Gas utility
- Spire
- Water
- City of St. Peters Utilities (St. Peters PWS); the city guide also lists Missouri American Water as a provider in the area
- Rebate worth checking
- Heat Pump Water Heater rebate (Active)
- Typical home
- Built 1988 (median) · 79% owner-occupied
- Companies found
- 5 that advertise water heater work
01 / TYPICAL PRICES
What a new water heater costs.
Know before you call.
Heat-pump tank
$2,500–$5,000Typical cost, including installation
Tankless
$2,400–$5,400Typical cost, including installation
AI equipment illustrations; models vary and images are not to scale. Typical national prices from Home Depot ↗, checked September 28, 2026. The source doesn’t say how many jobs the ranges are based on. These are not St. Peters averages or guaranteed quotes.
Compare what each quote includes.Equipment · Labor · Permits · Old heater removalHow to compare quotes →
What we know about prices in St. Peters
- National installer’s published rangeThe ranges above. Home Depot ↗
- Local permit feeBased on job value: 0.70% of the construction value for permits without plan review, with a $25 minimum for small permits for residents that need one inspection ($50 minimum otherwise). Appendix A as changed by Ord. 8080 (12-19-2024), code supplement March 2025. Starting work before the permit is issued adds a $50 penalty.. City of St. Peters Building and Engineering (Building Commissioner's Office) fee source ↗
- Local company’s advertised price1 of the companies listed for St. Peters post water heater prices or specials on their websites: Arch Plumbing. Each offer has its own conditions.
- Measured local dataNot collected yet, so no St. Peters average is shown.
02 / COMPANIES WE FOUND
Who replaces water heaters in St. Peters?
Companies that advertise water heater replacement here, with what their water heater customers say.
Companies we found in our research. They are not Ember & Tank providers or partners. We show selected reviews, not a rating or every review. How we choose reviews →
Arch Plumbing
Lists St. Peters among the areas it serves. Based in Lake St. Louis, MO area (site says 'Based near Lake St. Louis'; no street address shown).
- Tank
- Tankless
- Heat pump
- Repair
- Emergency service
Published price:
What the reviews say
Water heater feedback Customers praised quick scheduling for water heater replacements, including same-day and next-morning installs, and prompt, professional technicians.
Worth knowing No water heater complaints found in the sources checked.
4 water heater reviews read, checked September 30, 2026.
Beis Plumbing
Lists St. Peters among the areas it serves. Based in 280 Vance Rd, Valley Park, MO 63088.
- Tank
- Tankless
- Repair
- Emergency service
What the reviews say
Water heater feedback Customers praised same-day water heater replacements, code updates explained clearly, careful cleanup and responsive office staff.
Worth knowing Reviewers alleged problems after water heater installs, including ceiling water damage from a misrouted line that the company would not repair, an incorrect installation that caused corrosion and leaking, and dismissive service-manager follow-up; no company responses were visible on these reviews.
6 water heater reviews read, checked September 30, 2026.
Performance Plumbing
Lists St. Peters among the areas it serves. Based in 1104 S Callahan Rd, Wentzville, MO 63385.
- Tank
- Tankless
- Heat pump
- Repair
What the reviews say
Water heater feedback Customers praised on-time, tidy water heater replacements at a fair price, clear explanations, and no-pressure estimates.
Worth knowing No water heater complaints found in the sources checked.
4 water heater reviews read, checked September 30, 2026.
Superior Service
Lists St. Peters among the areas it serves. Based in 101 Stag Industrial Blvd., Lake Saint Louis, MO 63367 (second location: 17722 Chesterfield Airport Rd., Chesterfield, MO 63005).
- Tank
- Tankless
- Emergency service
What the reviews say
Water heater feedback Reviewers praised a well-done gas water heater installation and a technician who caught water heater corrosion during routine maintenance.
Worth knowing A 2025 BBB complaint alleged a water heater and drain-pan install that was never tested and later let water leak into a neighbor's unit, and that Superior charged a $100 visit fee and would not correct it; Superior responded that the work was permitted, passed inspection, excluded the existing drain system, and that the overflow came from equipment it never serviced (listed as Answered).
4 water heater reviews read, checked September 30, 2026.
Faszold Heating, Cooling, Plumbing & Electrical (Faszold Service Co.)
Lists St. Peters among the areas it serves. Based in 1613 East Terra Ln, O’Fallon, MO 63366.
- Tank
- Tankless
- Repair
- Emergency service
What the reviews say
We haven’t found reviews that mention this company’s water heater work yet.
Order: companies based in St. Peters first, then companies whose water heater reviews we’ve read. Each group is alphabetical. These businesses are not our employees or vetted partners and do not receive requests from Ember & Tank. We haven’t checked their license, insurance or quality of work. Missouri has no statewide plumbing license (check your city or county) ↗.
FROM COMPANIES SERVING ST. PETERS
Photos of water heater jobs from these companies.
HOMES IN ST. PETERS
What St. Peters homes are like.
1988Median year built
25%Built before 1980
79%Owner-occupied
69%Heat with utility gas
78%Single-family homes
The median home was built in 1988. A first or second replacement is common in homes this age.
69% of homes heat with utility gas, so gas water heaters with existing venting are common here.
U.S. Census Bureau, American Community Survey ACS 2024 5-year ↗ (2020-2024). Heating fuel is what homes use to heat the house. It often, but not always, matches the water heater’s fuel.
LOCAL CONDITIONS
What’s different in St. Peters.
River water mixed with well water
St. Peters water is Missouri River water treated at St. Louis's Howard Bend plant, plus groundwater from wells in the Mississippi River floodplain that the city softens with lime at its own plant.
Low minimum fee for one-inspection jobs
The city's fee schedule sets a $25 minimum for small permits for residents that need one inspection, and the city says a water heater replacement needs only one inspection.
St. Peters Appendix A Schedule of Fees ↗ · St. Peters Building Code Compliance ↗
ENERGY & WATER
Who supplies St. Peters homes.
Energy
- Electric: Ameren Missouri (Listed by the city; it doesn't publish which areas Ameren and Cuivre River each serve)
- Electric: Cuivre River Electric Cooperative (Also listed by the city for St. Peters)
- Gas: Spire
City of St. Peters: Opening a Business in St. Peters guide (utility contacts) ↗
Water
City of St. Peters Utilities (St. Peters PWS); the city guide also lists Missouri American Water as a provider in the area
St. Peters Water Services (sources and lime-softening plant) ↗ · St. Peters PWS 2025 Annual Water Quality Report (MO6010719) ↗
REBATES & CREDITS
Rebates for St. Peters homes.
For Ameren Missouri, Cuivre River Electric Cooperative and Spire customers in St. Peters. Ask installers for the price before rebates, then check with the program that you qualify.
- Heat Pump Water Heater rebate ↗ActiveCuivre River members only: 50% of the total cost, up to $750, for a heat pump water heater of 40 gallons or more.
- Missouri IRA Home Energy Rebates (HOMES and HEAR) ↗Not launchedMissouri expects about $76 million for HOMES and $75 million for electrification and appliance rebates.
- Federal Energy Efficient Home Improvement Credit (25C) ↗EndedCovered improvements made through December 31, 2025.
Checked September 30, 2026. Who qualifies and the conditions: Missouri rebates · How to check an incentive.
PERMITS & LICENSING
Permits and licenses in St. Peters.
Permits and who issues them
St. Peters requires permits for plumbing and mechanical repairs. Apply and get inspections through the city's CitizenServe portal. The city says a water heater replacement needs only one inspection.
Plumbing contractors need a St. Charles County license and may need a City of St. Peters business license. Plumbing companies must employ a licensed supervisor.
City of St. Peters Building and Engineering (Building Commissioner's Office) ↗ · St. Peters: Apply for Licenses & Permits ↗ · St. Peters: Building Code Compliance (inspections) ↗ · St. Peters Code Ch. 520 Plumbing Code amendments ↗ · St. Peters Title V Appendix A Schedule of Fees ↗
Check the installer’s license
Ask for the license number and search it yourself on the Missouri has no statewide plumbing license (check your city or county) ↗. A listing on Ember & Tank is not a license check. Missouri licensing explained →
NEARBY CITIES
Compare places near St. Peters.
| City | Distance | Permit to replace | Fee | Electric |
|---|---|---|---|---|
| St. Charles | 5 mi | Required | $50 | Ameren Missouri |
| O'Fallon | 6 mi | Required | $50 | Ameren Missouri, Cuivre River Electric Cooperative |
| Dardenne Prairie | 7 mi | Check with city | — | Ameren Missouri, Cuivre River Electric Cooperative |
| Maryland Heights | 9 mi | Required | $50, | Ameren Missouri |
| Chesterfield | 9 mi | Required | $47 | Ameren Missouri |
| Lake St. Louis | 10 mi | Required | $50 | Cuivre River Electric Cooperative |
COMMON QUESTIONS
St. Peters water heater questions.
Does St. Peters require a permit to replace a water heater?
Yes. The city requires permits for plumbing and mechanical repairs and says a water heater replacement needs one inspection. Apply on the city's CitizenServe portal.
How much is the permit?
The fee is 0.70% of the job's construction value for permits without plan review, with a $25 minimum for small permits for residents that need one inspection (Appendix A, changed December 2024).
Can I install my own water heater in St. Peters?
City plumbing code says homeowners working in an existing home they own and live in don't need a plumbing license. Plumbers you hire need a St. Charles County license.
Is there a local heat pump water heater rebate?
Cuivre River Electric Cooperative members can get 50% of the cost, up to $750, for a heat pump water heater (40 gallons or more).
More guides: Missouri water heater replacement · All local guides