Storage tank
$1,600–$2,400Typical cost, including installation
WATER HEATER REPLACEMENT IN EUREKA
Eureka Water Heater
Replacement
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See what replacement costs ↓EUREKA AT A GLANCE
Replacing a water heater in Eureka.
Eureka's Building Department requires a permit to install a water heater; apply on its iWorq portal. City code also lets the owner or occupant file the permit for the contractor within 72 hours after the install, which no other city here allows. Eureka homes use Ameren Missouri electricity and Spire gas. Water comes from Ozark Aquifer wells run by Missouri American Water, with 2024 hardness readings up to 513 ppm, far harder than the river water in the rest of the county.
- Permit to replace with the same type
- Yes · City of Eureka Building Department
- Permit fee
- City code sets a $10 plumbing permit fee plus a $5 hot water tank inspection/replacement fee, both raised for inflation each January. The base amounts come from ordinances dated 1993–2008; the current amounts aren't published.
- Who gets the permit
- City code lets a homeowner or occupant apply for the city plumbing permit on the contractor's behalf for a home water heater. The application and inspection request must reach the city within 72 hours of the install.
- Electric utility
- Ameren Missouri
- Gas utility
- Spire
- Water
- Missouri American Water (Eureka system, six Ozark Aquifer wells) · Up to 513 ppm as CaCO3 (range 34–513) in 2024 sampling, about 30 gpg at the high end; 2024 report (latest posted)
- Rebate worth checking
- Missouri IRA Home Energy Rebates (HOMES and HEAR) (Not launched)
- Typical home
- Built 1999 (median) · 79% owner-occupied
- Companies found
- 4 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 Eureka averages or guaranteed quotes.
Compare what each quote includes.Equipment · Labor · Permits · Old heater removalHow to compare quotes →
What we know about prices in Eureka
- National installer’s published rangeThe ranges above. Home Depot ↗
- Local permit feeCity code sets a $10 plumbing permit fee plus a $5 hot water tank inspection/replacement fee, both raised for inflation each January. The base amounts come from ordinances dated 1993–2008; the current amounts aren't published.. City of Eureka Building Department fee source ↗
- Local company’s advertised priceNone of the local company websites we checked list a full installed price.
- Measured local dataNot collected yet, so no Eureka average is shown.
02 / COMPANIES WE FOUND
Who replaces water heaters in Eureka?
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 →
Beis Plumbing
Lists Eureka 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.
Mr. Rooter Plumbing of St. Louis
Lists Eureka among the areas it serves. Based in Fenton, MO (city named in franchise page titles; street address not shown on pages checked).
- Tank
- Tankless
- Heat pump
- Repair
- Emergency service
What the reviews say
Water heater feedback The one testimonial praised a courteous, efficient plumber and a reasonable price for fixing a water heater leak.
Worth knowing No water heater complaints found in the sources checked.
1 water heater review read, checked September 30, 2026.
Superior Service
Lists Eureka 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.
Roto-Rooter Plumbing & Water Cleanup (St. Louis)
Lists Eureka among the areas it serves. Based in 2671 Washington Ave, St Louis, MO 63103 (local branch of national company).
- Tank
- Tankless
- Heat pump
- 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 Eureka 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) ↗.
See before-and-after replacement examples from independent companies →
HOMES IN EUREKA
What Eureka homes are like.
1999Median year built
22%Built before 1980
79%Owner-occupied
62%Heat with utility gas
86%Single-family homes
About 28% of homes were built since 2010, so many original water heaters are reaching the age when replacement planning makes sense.
62% 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 Eureka.
Permit can be filed up to 72 hours after the install
Eureka lets the owner or occupant apply for a home water heater permit on the contractor's behalf, as long as the application and inspection request reach the city within 72 hours of the install.
Very hard well water
Eureka's water comes from six Ozark Aquifer wells, not the river plants that serve most of St. Louis County. The 2024 report lists total hardness up to 513 ppm and sodium up to 268 ppm.
Missouri American Water Eureka 2024 Annual Water Quality Report (PWS MO6010258) ↗
Check your HOA's rules
The city says some subdivisions have rules about outside features and suggests checking with your homeowners association.
ENERGY & WATER
Who supplies Eureka homes.
Energy
- Electric: Ameren Missouri
- Gas: Spire
Missouri PSC Utility Locator (St. Louis County / St. Charles / Lincoln / Franklin city list) ↗
Water
Missouri American Water (Eureka system, six Ozark Aquifer wells): Up to 513 ppm as CaCO3 (range 34–513) in 2024 sampling, about 30 gpg at the high end; 2024 report (latest posted)
Missouri American Water Eureka 2024 Annual Water Quality Report (PWS MO6010258) ↗
REBATES & CREDITS
Rebates for Eureka homes.
For Ameren Missouri and Spire customers in Eureka. Ask installers for the price before rebates, then check with the program that you qualify.
- 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 Eureka.
Permits and who issues them
Eureka says you need a permit to install a hot water heater. Apply online on the Building Department's iWorq portal (paper applications are no longer accepted). Request inspections on iWorq or by calling the inspection hotline.
Eureka's plumbing rules follow St. Louis County's. We didn't find a separate city plumber license.
City of Eureka Building Department ↗ · City of Eureka: Residential Permits ↗ · City of Eureka Code Ch. 16 Plumbing ↗
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 Eureka.
| City | Distance | Permit to replace | Fee | Electric |
|---|---|---|---|---|
| Wildwood | 6 mi | Required | $47 | Ameren Missouri |
| Ellisville | 7 mi | Required | $12 | Ameren Missouri |
| Ballwin | 8 mi | Required | — | Ameren Missouri |
| Manchester | 10 mi | Required | $47 | Ameren Missouri |
| Chesterfield | 12 mi | Required | $47 | Ameren Missouri |
| Town and Country | 13 mi | Required | $47 | Ameren Missouri |
COMMON QUESTIONS
Eureka water heater questions.
Do I need a permit for a water heater in Eureka?
Yes. The city says hot water heater installs need a permit, filed online on iWorq.
Can the permit be filed after the water heater is installed?
For home water heaters, city code lets the owner or occupant apply on the contractor's behalf within 72 hours of the install, along with the inspection request.
Is Eureka's water hard?
Yes. Missouri American Water's 2024 Eureka report lists total hardness from 34 to 513 ppm from its wells.
Missouri American Water Eureka 2024 Annual Water Quality Report (PWS MO6010258) ↗
More guides: Missouri water heater replacement · All local guides