Storage tank
$1,600–$2,400Typical cost, including installation
WATER HEATER REPLACEMENT IN CRESTWOOD
Crestwood Water Heater
Replacement
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See what replacement costs ↓CRESTWOOD AT A GLANCE
Replacing a water heater in Crestwood.
In Crestwood, the plumbing permit for a water heater comes from St. Louis County and costs $47 under the county's November 2025 fee table. The city adds its own zoning review for renovations that change plumbing, and contractors need a Crestwood business license. Crestwood is served by Ameren Missouri for electricity, Spire for gas and Missouri American Water for water.
- Permit to replace with the same type
- Yes · St. Louis County Department of Transportation and Public Works (building and trade permits), with a City of Crestwood Zoning Review Permit for renovations
- Permit fee
- $47 total to replace a home water heater; replacements don't pay the county's separate $47 processing fee (St. Louis County Code §1100.200, Ord. 29445, Nov. 5, 2025). Crestwood doesn't publish a zoning review fee.
- Who gets the permit
- St. Louis County issues water heater replacement permits to county-licensed master plumbers or master water heater replacement specialists. An owner who lives in a detached single-family home can get a homeowner permit (which can include one water heater) if they do the work themselves.
- Electric utility
- Ameren Missouri
- Gas utility
- Spire
- Water
- Missouri American Water · Total hardness 82–164 ppm (about 5–10 gpg) from Missouri American's Missouri River plants and 60–150 ppm (about 3.5–9 gpg) from its Meramec River plant, per the 2025 report; the report does not say which plant serves which neighborhood.
- Rebate worth checking
- Missouri IRA Home Energy Rebates (HOMES and HEAR) (Not launched)
- Typical home
- Built 1960 (median) · 88% 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 Crestwood averages or guaranteed quotes.
Compare what each quote includes.Equipment · Labor · Permits · Old heater removalHow to compare quotes →
What we know about prices in Crestwood
- National installer’s published rangeThe ranges above. Home Depot ↗
- Local permit fee$47 total to replace a home water heater; replacements don't pay the county's separate $47 processing fee (St. Louis County Code §1100.200, Ord. 29445, Nov. 5, 2025). Crestwood doesn't publish a zoning review fee.. St. Louis County Department of Transportation and Public Works (building and trade permits), with a City of Crestwood Zoning Review Permit for renovations fee source ↗
- Local company’s advertised price1 of the companies listed for Crestwood post water heater prices or specials on their websites: Hoffmann Brothers. Each offer has its own conditions.
- Measured local dataNot collected yet, so no Crestwood average is shown.
What can change the price in Crestwood?
Water heaters over 120 gallons (or over 40 kW or 140,000 BTU) are charged under county mechanical permit fees, and a new circuit needs a county electrical permit. Structural changes and tearing out walls or framing need city permits.
02 / COMPANIES WE FOUND
Who replaces water heaters in Crestwood?
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 →
Hoffmann Brothers
Lists Crestwood among the areas it serves. Based in 3700 Rider Trail S, Suite 100, Earth City, MO 63045 (other St. Louis-area offices: 1643 Tower Grove Ave, St. Louis, MO 63110; 2043 Woodland Pkwy, Suite 100, St Louis, MO 63146; 1254 University Drive, Suite 800, Edwardsville, IL 62025).
- Tank
- Tankless
- Repair
Published price:
What the reviews say
Water heater feedback Customers praised quick replacements (often same or next day), clean installs with floor protection, clear explanations of options, warranties and rebates, and no pushy selling.
Worth knowing A 2026 BBB reviewer said a $927 water heater repair failed, the unit was replaced for about $4,000, and the company credited $450 only after back-and-forth; another reviewer said the company was not the cheapest.
5 water heater reviews read, checked September 30, 2026.
What the reviews say
Water heater feedback Reviewers praised kind, knowledgeable plumbers, a temporary fix that restored hot water until replacement, and pricing they considered fair.
Worth knowing No water heater complaints found in the sources checked.
2 water heater reviews read, checked September 30, 2026.
Performance Plumbing
Lists Crestwood 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 Crestwood 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 Crestwood 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 Crestwood 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 CRESTWOOD
Photos of water heater jobs from these companies.
HOMES IN CRESTWOOD
What Crestwood homes are like.
1960Median year built
89%Built before 1980
88%Owner-occupied
85%Heat with utility gas
88%Single-family homes
About 89% of homes were built before 1980. Older homes often have older venting, smaller closets and shutoff valves that should be checked before install day.
85% 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 Crestwood.
An expansion tank on every replacement
St. Louis County's plumbing code requires a listed thermal expansion tank on the cold water line within 10 feet of any new or replacement water heater. The tank must be labeled with the water pressure and its pre-charge, and a reachable shutoff valve must be within 10 feet.
St. Louis County Plumbing Code, Ch. 1103 (2015 UPC with county amendments) ↗
City license for contractors
Any contractor that doesn't already have a Crestwood business license needs a Contractor's Business License, applied for on the same online portal as permits.
ENERGY & WATER
Who supplies Crestwood homes.
Water
Missouri American Water: Total hardness 82–164 ppm (about 5–10 gpg) from Missouri American's Missouri River plants and 60–150 ppm (about 3.5–9 gpg) from its Meramec River plant, per the 2025 report; the report does not say which plant serves which neighborhood.
Missouri PSC Utility Locator ↗ · Missouri American Water 2025 Water Quality Report, St. Louis County / St. Charles County ↗
REBATES & CREDITS
Rebates for Crestwood homes.
For Ameren Missouri and Spire customers in Crestwood. 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 Crestwood.
Permits and who issues them
Crestwood says home renovations that change plumbing, mechanical or electrical systems need a Crestwood Zoning Review Permit, applied for on the city's online portal, and then a permit and inspections from St. Louis County. The county handles water heater replacements up to 120 gallons as online No-Plan Plumbing Permits. Post the city permit card on your front door while the work is going on.
The plumber or water heater replacement specialist must have a St. Louis County master or journeyman license. Crestwood also requires a Contractor's Business License for any contractor that doesn't already have a current Crestwood business license.
St. Louis County Department of Transportation and Public Works (building and trade permits), with a City of Crestwood Zoning Review Permit for renovations ↗ · Crestwood – Permits & Licenses ↗ · St. Louis County – No-Plan Plumbing Permits ↗ · St. Louis County Code §1100.200 Plumbing Inspection and Permit Fees (Ord. 29445, Nov. 5, 2025) ↗ · St. Louis County Plumbing Code, Ch. 1103 (2015 UPC with county amendments) ↗
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 Crestwood.
| City | Distance | Permit to replace | Fee | Electric |
|---|---|---|---|---|
| Webster Groves | 2 mi | Required | — | Ameren Missouri |
| Kirkwood | 3 mi | Required | — | Kirkwood Electric (municipal), Ameren Missouri |
| Affton | 3 mi | Required (county) | $47 | Ameren Missouri |
| Mehlville | 5 mi | Required (county) | $47 | Ameren Missouri |
| Lemay | 5 mi | Required (county) | $47 | Ameren Missouri |
| Clayton | 7 mi | Required | $35 | Ameren Missouri |
COMMON QUESTIONS
Crestwood water heater questions.
Who issues the water heater permit in Crestwood?
St. Louis County issues the plumbing permit. Crestwood says renovations that change plumbing also need a city Zoning Review Permit first, applied for online.
Crestwood – Permits & Licenses ↗ · St. Louis County – No-Plan Plumbing Permits ↗
Does my plumber need a Crestwood license?
Contractors need a Crestwood Contractor's Business License unless they already have a Crestwood business license. The plumber also needs a St. Louis County license.
Crestwood – Permits & Licenses ↗ · St. Louis County Plumbing Code, Ch. 1103 (2015 UPC with county amendments) ↗
More guides: Missouri water heater replacement · All local guides