Storage tank
$1,600–$2,400Typical cost, including installation
WATER HEATER REPLACEMENT IN ARNOLD
Arnold Water Heater
Replacement
Take a photo of your old water heater to start a replacement quote.
Get a water heater quotePhotos optional. No payment or booking.
See what replacement costs ↓ARNOLD AT A GLANCE
Replacing a water heater in Arnold.
Arnold has its own Water Heater Permit on the city's MyGov portal, and the fee for a home is $50. Only plumbers with an Arnold specialty license, backed by a $5,000 bond, can do the work. Arnold gets power from Ameren Missouri and gas from Spire. Water comes from Missouri American Water, either directly or through Jefferson County PWSD #1.
- Permit to replace with the same type
- Yes · City of Arnold Community Development – Building Division
- Permit fee
- $50 home plumbing permit fee for a Water Heater Permit ($100 for businesses), from the city's MyGov fee estimator, checked Sept. 2026.
- Who gets the permit
- Only contractors licensed by the City of Arnold can work in the city. Plumbers need a city business license plus a city specialty license. We found no rule for homeowners.
- Electric utility
- Ameren Missouri
- Gas utility
- Spire
- Water
- Missouri American Water or Jefferson County Public Water Supply District #1, depending on address (PWSD 1 buys its water from Missouri American) · Total hardness 82–164 ppm (about 5–10 gpg) from Missouri River plants and 60–150 ppm (about 3.5–9 gpg) from Meramec River plants, per Missouri American Water's 2025 report; the report says the water is lime-softened. PWSD 1's 2025 report lists calcium of 15–23 mg/L in the Missouri American water it buys.
- Rebate worth checking
- Missouri IRA Home Energy Rebates (HOMES and HEAR) (Not launched)
- Typical home
- Built 1977 (median) · 80% 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 Arnold averages or guaranteed quotes.
Compare what each quote includes.Equipment · Labor · Permits · Old heater removalHow to compare quotes →
What we know about prices in Arnold
- National installer’s published rangeThe ranges above. Home Depot ↗
- Local permit fee$50 home plumbing permit fee for a Water Heater Permit ($100 for businesses), from the city's MyGov fee estimator, checked Sept. 2026.. City of Arnold Community Development – Building Division fee source ↗
- Local company’s advertised price1 of the companies listed for Arnold post water heater prices or specials on their websites: Hoffmann Brothers. Each offer has its own conditions.
- Measured local dataNot collected yet, so no Arnold average is shown.
What can change the price in Arnold?
The portal has separate Electrical and Mechanical permits for homes, so a new circuit or changes to gas lines or venting may need their own permits.
02 / COMPANIES WE FOUND
Who replaces water heaters in Arnold?
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 Arnold 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.
Linek Plumbing Company
Lists Arnold among the areas it serves. Based in 24 Kirkham Industrial Ct, Webster Groves, MO 63119.
- Tank
- Tankless
- Repair
- Emergency service
What the reviews say
Water heater feedback Testimonials praised careful floor protection and cleanup, clear communication, and the office finding a same-day crew after a scheduling mix-up.
Worth knowing No water heater complaints found in the sources checked.
4 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.
Roto-Rooter Plumbing & Water Cleanup (St. Louis)
Lists Arnold 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 Arnold 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 ARNOLD
What Arnold homes are like.
1977Median year built
54%Built before 1980
80%Owner-occupied
65%Heat with utility gas
85%Single-family homes
About 54% of homes were built before 1980. Older homes often have older venting, smaller closets and shutoff valves that should be checked before install day.
65% 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 Arnold.
Allow two weeks for the permit
Arnold asks for permit applications at least two weeks before work starts. That doesn't work for an emergency replacement, so if your heater has failed, call the Building Division (636-282-2378).
Occupancy permit every time someone moves in
Anyone moving into a house needs an occupancy permit (free). When a house is sold or a new tenant moves in, an inspection of the existing home ($50) is required.
Utility tax rebate for seniors
Every April and October, the city refunds city utility taxes paid by residents who are 62 or older, or totally disabled, with household income up to $30,000. Bring six months of paid gas and electric bills.
ENERGY & WATER
Who supplies Arnold homes.
Water
Missouri American Water or Jefferson County Public Water Supply District #1, depending on address (PWSD 1 buys its water from Missouri American): Total hardness 82–164 ppm (about 5–10 gpg) from Missouri River plants and 60–150 ppm (about 3.5–9 gpg) from Meramec River plants, per Missouri American Water's 2025 report; the report says the water is lime-softened. PWSD 1's 2025 report lists calcium of 15–23 mg/L in the Missouri American water it buys.
Arnold – Utilities & Services ↗ · Missouri American Water 2025 Water Quality Report, St. Louis County / St. Charles County (PWS MO6010716) ↗ · Jefferson County PWSD 1 2025 Annual Water Quality Report (MoDNR, MO6024292) ↗
REBATES & CREDITS
Rebates for Arnold homes.
For Ameren Missouri and Spire customers in Arnold. 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 Arnold.
Permits and who issues them
Arnold's MyGov permit portal has its own 'Water Heater Permit' type. Apply and pay on the portal. The city asks you to apply at least two weeks before you plan to start and tries to process applications within one to two business weeks.
Yes. Anyone working in Arnold needs a city business license (application, fee and proof of insurance). Plumbers, electricians and drain layers also need a city specialty license, which takes a copy of a license they already hold, a fee and a $5,000 surety bond to the city.
City of Arnold Community Development – Building Division ↗ · Arnold – Building Permits & Inspections ↗ · Arnold MyGov Portal – Estimate Fees (Water Heater Permit) ↗
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 Arnold.
| City | Distance | Permit to replace | Fee | Electric |
|---|---|---|---|---|
| Oakville | 3 mi | Required (county) | $47 | Ameren Missouri |
| Mehlville | 6 mi | Required (county) | $47 | Ameren Missouri |
| Lemay | 9 mi | Required (county) | $47 | Ameren Missouri |
| Affton | 9 mi | Required (county) | $47 | Ameren Missouri |
| Crestwood | 9 mi | Required | $47 | Ameren Missouri |
| Kirkwood | 11 mi | Required | — | Kirkwood Electric (municipal), Ameren Missouri |
COMMON QUESTIONS
Arnold water heater questions.
How much is a water heater permit in Arnold?
The city's MyGov fee estimator shows a $50 home plumbing permit fee for a Water Heater Permit.
Can my St. Louis County-licensed plumber work in Arnold?
Only after getting an Arnold business license and an Arnold plumbing specialty license. The specialty license takes a copy of their current license, a fee and a $5,000 surety bond.
How long does the permit take?
The city tries to process applications in one to two business weeks and asks you to apply at least two weeks before work starts.
More guides: Missouri water heater replacement · All local guides