Water heater replacement & repair in Missouri
Same-day pros across 87 Missouri cities. Estimate your cost, then call to lock in the price.
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What it costs across Missouri
Water Heater Replacement
Water heater replacement cost depends on the unit type, size, fuel source, and what code upgrades the job triggers. A basic 40-gallon gas tank swap and a high-efficiency tankless install can sit nearly $4,000 apart.
Water Heater Installation
Water heater installation cost covers the labor and parts to fit a new unit — whether it's a first-time install, a fuel switch, or a tankless conversion. The number swings with venting, gas-line work, and whether the location changes.
Water Heater Repair
Water heater repair cost depends on the failing part and whether the unit is gas or electric. Most common repairs — thermostats, elements, thermocouples, valves — land between $150 and $800 including labor.
* Statewide medians — open a city for locally adjusted pricing.
What’s different about Missouri.
Generic cost pages skip the things that actually decide your price and your unit’s lifespan here — local code, water, and the money you can claim back.
Recommended unit for Missouri
Given Missouri’s humid continental climate and gas water heating, high-efficiency gas is the sensible default for most Missouri homes. Winter inlet water runs cold here, so recovery rate matters — size up a tankless or favor a high-recovery tank. A pro can confirm the right size and fuel for your home.
Sources: Missouri Plumbing Code Standards and Adopted Editions · Missouri DNR - IRA Home Energy Rebates Programs · Missouri Modular Plumbing Code 2015 Chapter 5 Water Heaters (UpCodes)
What Missouri code requires
Across Missouri, replacing a water heater means meeting these statewide rules under the International Plumbing Code (IPC), adopted locally:
- PermitRequired
Pulled by your licensed plumber; covers gas/venting and the expansion tank.
- Seismic strappingNot required
No state strapping mandate — one less line on the bill.
- Expansion tankRequired on closed systems (check valve, PRV, or backflow preventer present)
Required where a pressure regulator or backflow preventer is present.
- Plumbing codeInternational Plumbing Code (IPC), adopted locally
- Good to know—
Missouri has no single statewide building/plumbing code; permit and code requirements are set by each local jurisdiction, and work generally must be done by a state-licensed plumber
Sources: Missouri Plumbing Code Standards and Adopted Editions · Missouri DNR - IRA Home Energy Rebates Programs · Missouri Modular Plumbing Code 2015 Chapter 5 Water Heaters (UpCodes)
Not sure which rules and rebates apply to your home?
A licensed Missouri pro will walk you through code, the right unit, and what you can claim back — in one quick call.
No obligation — talk through your options.
Money back in Missouri
Missouri water heating is mostly gas, which shapes the money back:
- Federal30% of cost, up to $2,000Federal 25C tax credit →
For a qualifying ENERGY STAR heat pump water heater. Claimed on your federal return.
The federal 25C tax credit (30%, up to $2,000 for a qualifying heat pump water heater) applies in every state, including Missouri.
Ready to get your water heater fixed in Missouri?
Speak with a licensed, insured water heater pro near you. Upfront pricing, same-day availability, no obligation.
- Licensed & insured
- Same-day availability
- Upfront, no-pressure pricing
- Local pros near you
No obligation — talk through your options.
All 87 Missouri cities
Type your city to jump straight to local pricing.
- Kansas City506k
- St. Louis298k
- Springfield169k
- Columbia126k
- Independence122k
- Lee's Summit102k
- O'Fallon92k
- St. Joseph72k
- St. Charles71k
- Blue Springs59k
- St. Peters58k
- Florissant52k
- Joplin52k
- Chesterfield50k
- Wentzville45k
- Jefferson City43k
- Cape Girardeau40k
- Oakville35k
- Wildwood35k
- University City35k
- Ballwin31k
- Liberty30k
- Raytown30k
- Kirkwood29k
- Mehlville29k
- Maryland Heights28k
- Gladstone27k
- Grandview26k
- Hazelwood25k
- Belton24k
- Webster Groves24k
- Nixa24k
- Raymore23k
- Sedalia22k
- Ozark21k
- Arnold21k
- Old Jamestown20k
- Rolla20k
- Affton20k
- Warrensburg19k
- Republic19k
- Creve Coeur19k
- Concord19k
- Ferguson19k
- Manchester18k
- Spanish Lake18k
- Farmington18k
- Kirksville18k
- Clayton17k
- Lake St. Louis17k
- Hannibal17k
- Poplar Bluff16k
- Lemay16k
- Sikeston16k
- Overland16k
- Grain Valley16k
- Fort Leonard Wood16k
- Carthage15k
- Jackson15k
- Lebanon15k
- Washington15k
- Moberly14k
- Marshall14k
- Webb City13k
- Jennings13k
- Troy13k
- St. Ann13k
- Dardenne Prairie13k
- Festus13k
- Neosho13k
- Branson13k
- Fulton13k
- Union12k
- Crestwood12k
- West Plains12k
- Eureka12k
- Town and Country12k
- Mexico12k
- Bridgeton11k
- Bolivar11k
- Maryville11k
- Bellefontaine Neighbors11k
- Excelsior Springs11k
- Kearney10k
- Smithville10k
- Kennett10k
- Harrisonville10k
87 cities
Hot water back in three steps.
- 1
Tell us what’s wrong
Use the cost tool or call — takes 30 seconds. No hot water, a leak, or time for a new unit.
- 2
Get matched with a local pro
We connect you with a licensed, insured water heater specialist near you — often the same day.
- 3
Repair or replace, fast
Your pro confirms the price on-site and gets your hot water back. Most jobs done in a few hours.
Water heater FAQs — Missouri
In Missouri, a plumbing permit is generally required for a water heater replacement. Your licensed plumber pulls it; it covers the gas/venting and expansion tank.
Get a water heater quote in Missouri.
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