Free Calculator · Updated May 2026

Water Heater Replacement Cost Calculator

Estimate the installed cost to replace a water heater. Pick the type and capacity, then adjust fuel and conversion options for an instant range.

Estimated installed cost

$700 – $3,100

An estimate for planning only — not a quote. Connections, code upgrades, and region move the price; get bids from local plumbers.

Embed this calculator (free)

Run a blog or local-services site? Drop this calculator on your page — copy the snippet below. Free to use; please keep the JobStack link.

<iframe src="https://jobstackcrm.com/embed/water-heater/" width="100%" height="640" style="border:1px solid #e5e5e5;border-radius:12px;max-width:760px" title="Water Heater Replacement Cost Calculator" loading="lazy"></iframe>

FAQ

Is tankless worth the higher cost?

Tankless costs more up front and may need gas-line or panel upgrades (toggle that on for a realistic estimate), but it lasts longer and lowers energy bills. Whether it pays off depends on your usage and energy prices.

What size water heater do I need?

Roughly: a 40-gallon tank suits 1–3 people, 50 gallons suits 3–4, and 75 gallons suits 5+. Tankless units are sized by flow rate (GPM) instead of capacity.

For pros

Plumber? Quote a water-heater swap on site and get paid the same day — JobStack drafts the estimate and chases the invoice.

Try the free estimate generator

Estimates are for planning only and are not a quote. Installed costs by type and capacity from HomeAdvisor, Fixr, and HomeGuide (2025–2026). See the full Water heater cost guide, or browse all cost calculators.