Cost & Running Cost

Purchase, install and the annual cost of each fuel type.

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Water heater replacement cost in Missouri: 75-gallon gas

A 75-gallon gas water heater replacement in Missouri

$2,951

three or more bathrooms drawing at once · typical range $2,137 – $4,478

Typical totalinstalled, 75 gallon gas	$2,951
Range you should see in bidsthree bids on the same scope normally land inside this	$2,137 – $4,478
Labor portion45% of the job — this is the part that moves by state	$1,328
Material portion55% — bought at national prices	$1,623
Plumbers, Pipefitters, and Steamfitters pay in Missouriabout $36/hr · BLS OEWS May 2025, SOC 47-2152	$75,010/yr
U.S. mean for the same tradeSOC 47-2152	$72,170/yr
Versus the national priceMissouri trade pay runs +3.9% against the U.S. mean	+$51

Notes

Where the number comes from. The national price for a 75-gallon gas water heater replacement is $2,900 installed — water heater replacement pricing published for 2026, unit plus installation. Labor is about 45% of that. Plumbers, Pipefitters, and Steamfitters in Missouri average $75,010 a year against a U.S. mean of $72,170 — a factor of 1.039 — so the labor half is scaled by that and the material half is not.
What is in the price: the heater, removal and disposal of the old one, new flex connectors, a drain pan, an expansion tank where code requires it, and labor.
What is not: a gas line upsize, new venting, an electrical circuit for an electric unit, and bringing an old install up to current code. These are the lines that turn a $2,951 quote into a $3,689 invoice, so ask about each one before signing.
Why state matters more than people expect. Materials ship at national prices; crews do not move. Missouri sits above the national mean by 3.9%, which lands on 45% of the job and moves the total by $51.
Use this as a bid check, not a quote. It prices an average job in an average condition. Difficult access, the state of what is being replaced, the season, and a crew booked out three months all move the real number, and none of them are in a national average for the job.

306 calculations · browse all

Water Heater Replacement Cost by State — 50 Gallon Gas, All 51
Like-for-like is the cheap path. Every change away from it adds a trade, and that is why two quotes on "a new water heater" can differ by three thousand dollars.