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Cost guide

Water Heater Replacement Cost

Replacing a standard tank water heater with a like-for-like unit, installed and hauled away.

Typical range
$900–$3,400
Most people pay
$1,800
Service life
8–12 years for a tank unit; 15–20 years for tankless

National cost range

National range, per unit installed

$900 – $3,400

Most homeowners pay around $1,800. The spread is real, not hedging — the drivers below determine which end of it you land on.

Low end
$900
Simple access, like-for-like
Typical
$1,800
What most jobs come in at
High end
$3,400
Upgrades, difficult access, code work

What you are actually paying for

Find the row that matches your situation. Quotes that differ wildly from each other usually differ in scope, not in price.

ScenarioTypical cost
40–50 gal electric, garage, like-for-likeThe simplest version of this job. No venting, easy access.$900–$1,600
40–50 gal gas, like-for-likeAdds venting and gas connection work.$1,200–$2,400
Heat pump water heaterHigher unit cost; may need a dedicated circuit and condensate drain. Federal and utility rebates often apply.$2,200–$4,500
Tankless gas conversionGas line upsizing and new stainless venting are the cost drivers, not the unit.$3,500–$7,000
Attic or difficult accessPan, drain line and a two-person carry.$1,800–$3,800

What moves the price

In descending order of impact. These are also the questions worth asking a contractor whose quote sits outside the range above.

  1. Tank versus tankless

    A tankless conversion typically doubles or triples the job because it usually requires a larger gas line, new venting, or a substantial electrical upgrade.

  2. Fuel type

    Electric resistance units are cheapest to install. Gas costs more because of venting and gas connection. Heat pump units cost the most up front and save the most to run.

  3. Code upgrades triggered by the swap

    Expansion tanks, drain pans, seismic strapping, a new gas shutoff and updated venting are frequently required on replacement and are commonly excluded from the headline price.

  4. Access

    A garage installation is straightforward. An attic or a finished basement with a tight stairwell adds labor, and attic installations require a pan and a drain line.

  5. Permit and inspection

    Most jurisdictions require a permit for a water heater replacement. Budget $75 to $300 plus the contractor's handling time.

Can you do it yourself?

Limited DIY scope

An experienced DIYer can replace an electric unit in an accessible location. Gas units involve combustion venting and gas connections where a mistake is a carbon monoxide risk, and most jurisdictions require a licensed plumber plus a permit.

Permits and inspection

A permit is required in most U.S. jurisdictions. Unpermitted water heater work is a routine finding in home inspections and can complicate an insurance claim after a failure.
Run the DIY vs. pro decisionCheck a quote you already have

When this cannot wait

  • Water pooling around the base of the tank
  • No hot water at all in a household that needs it daily
  • Rust-colored hot water or a strong metallic smell
  • Relief valve discharging repeatedly

Common questions

How much does it cost to replace a 50 gallon water heater?
A like-for-like 50 gallon replacement typically runs $1,200 to $2,400 for gas and $900 to $1,600 for electric, including the unit, labor, permit and disposal of the old tank.
How long does a water heater replacement take?
A straightforward like-for-like swap takes two to four hours. Conversions, relocations and tankless installations take a full day or more.
Should I replace it before it fails?
If the tank is past 10 years and sits above finished space, planned replacement is usually cheaper than an emergency call plus water damage remediation.

Not sure this is the problem?

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