Storage tank
$1,600–$2,400Typical cost, including installation
WATER HEATER REPLACEMENT IN TROY
Troy Water Heater
Replacement
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See what replacement costs ↓TROY AT A GLANCE
Replacing a water heater in Troy.
In Troy, every Building Department permit costs at least $50, and the city enforces the 2015 International Plumbing Code. Ameren Missouri supplies both gas and electricity. City well water is very hard, up to 328 mg/L in 2025 testing.
- Permit to replace with the same type
- Check with the city · City of Troy Building Department
- Permit fee
- Every Building Department permit is at least $50, and miscellaneous permits are $50 (Table I to Title IV, amended through Ord. 1401, Nov. 17, 2025). Working without a required permit or inspection costs $500.
- Electric utility
- Ameren Missouri
- Gas utility
- Ameren Missouri
- Water
- City of Troy (Troy PWS, groundwater wells) · Carbonate hardness 233–328 mg/L (about 14–19 gpg), sampled Nov. 12, 2025, in the 2025 report
- Rebate worth checking
- Missouri IRA Home Energy Rebates (HOMES and HEAR) (Not launched)
- Typical home
- Built 2000 (median) · 70% 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 Troy averages or guaranteed quotes.
Compare what each quote includes.Equipment · Labor · Permits · Old heater removalHow to compare quotes →
What we know about prices in Troy
- National installer’s published rangeThe ranges above. Home Depot ↗
- Local permit feeEvery Building Department permit is at least $50, and miscellaneous permits are $50 (Table I to Title IV, amended through Ord. 1401, Nov. 17, 2025). Working without a required permit or inspection costs $500.. City of Troy Building Department fee source ↗
- Local company’s advertised price1 of the companies listed for Troy post water heater prices or specials on their websites: Arch Plumbing. Each offer has its own conditions.
- Measured local dataNot collected yet, so no Troy average is shown.
02 / COMPANIES WE FOUND
Who replaces water heaters in Troy?
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 Troy 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.
Superior Service
Lists Troy 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.
Darwyn's Plumbing, Inc.
Lists Troy among the areas it serves. Based in 2702 Camp Jackson Rd, Cahokia, IL 62206.
- Tank
- Tankless
- Repair
- Emergency service
What the reviews say
We haven’t found reviews that mention this company’s water heater work yet.
Faszold Heating, Cooling, Plumbing & Electrical (Faszold Service Co.)
Lists Troy 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.
Roto-Rooter Plumbing & Water Cleanup (St. Louis)
Lists Troy 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 Troy 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 TROY
What Troy homes are like.
2000Median year built
20%Built before 1980
70%Owner-occupied
28%Heat with utility gas
84%Single-family homes
The median home was built in 2000. A first or second replacement is common in homes this age.
71% of homes heat with electricity, which usually means an electric water heater. It’s worth getting a price on a heat pump model too.
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 Troy.
Very hard well water
Troy's six wells deliver water with carbonate hardness up to 328 mg/L (about 19 grains per gallon) in 2025 testing.
Ameren Missouri for gas and electric
The Missouri PSC lists Ameren Missouri as both the electric and natural gas company in Troy. In St. Louis-area suburbs, Spire supplies gas.
ENERGY & WATER
Who supplies Troy homes.
Water
City of Troy (Troy PWS, groundwater wells): Carbonate hardness 233–328 mg/L (about 14–19 gpg), sampled Nov. 12, 2025, in the 2025 report
Missouri PSC Utility Locator ↗ · Troy PWS 2025 Annual Water Quality Report (MO6010798) ↗
REBATES & CREDITS
Rebates for Troy homes.
For Ameren Missouri customers in Troy. 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 Troy.
Permits and who issues them
Troy uses the 2015 International Plumbing Code, which calls for plumbing permits, with fees set by the city's building permit fee schedule. We couldn't confirm its water heater permit process online.
City of Troy Building Department ↗ · Troy Code §500.015 Adoption of the International Plumbing Code (2015) ↗ · Troy Code Title IV Attachment 1, Table I fees (amended through Ord. 1401, Nov. 17, 2025) ↗
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 Troy.
| City | Distance | Permit to replace | Fee | Electric |
|---|---|---|---|---|
| Wentzville | 12 mi | Check with city | $35, | Ameren Missouri |
| Lake St. Louis | 16 mi | Required | $50 | Cuivre River Electric Cooperative |
| O'Fallon | 18 mi | Required | $50 | Ameren Missouri, Cuivre River Electric Cooperative |
| Dardenne Prairie | 21 mi | Check with city | — | Ameren Missouri, Cuivre River Electric Cooperative |
| St. Peters | 23 mi | Required | By job value (from $25) | Ameren Missouri, Cuivre River Electric Cooperative |
| St. Charles | 27 mi | Required | $50 | Ameren Missouri |
COMMON QUESTIONS
Troy water heater questions.
What is the smallest permit fee in Troy?
$50, the minimum for any Building Department permit under the city's fee table (amended November 2025).
Troy Code Title IV Attachment 1, Table I fees (amended through Ord. 1401, Nov. 17, 2025) ↗
How hard is Troy's water?
Troy's 2025 report lists carbonate hardness of 233–328 mg/L, roughly 14–19 grains per gallon.
More guides: Missouri water heater replacement · All local guides