Planning guide · Reviewed 2026-10-16

Water Heater Replacement Cost: Tank, Tankless & Heat Pump

HomeScore's installed planning ranges are $1,600–$3,200 for a 50-gallon tank, $3,200–$5,600 for gas tankless and $3,800–$6,500 for a 50-gallon heat pump. These are modeled budgets, not local quotes. Compare the equipment and installation scope before choosing.

Add your home and see your score

Create your private account, add your address, and save your first home system. See its details and next steps. Start Free and add up to 3 systems. When you're ready for the full picture, add a card to begin your 30-day free trial of HomeScore Pro.

Compare the same kind of replacement

Installed HomeScore planning values in USD — not local bids
Equipment scope	Planning range	Planning midpoint
50-gallon storage tank	$1,600–$3,200	$2,300
Gas tankless	$3,200–$5,600	$4,400
50-gallon heat pump	$3,800–$6,500	$4,900

50-gallon storage tank

A tank replacement; fuel, venting and required connection work must be confirmed in the quote.

Gas tankless

A gas tankless installation; gas supply, venting, condensate and demand sizing can change the scope.

50-gallon heat pump

A heat-pump unit; installation space, electrical supply, condensate and household demand need review.

What should a written quote include?

Exact make, model, fuel type, capacity and sizing basis; compare like-for-like equipment.
Equipment, labor and ordinary connection materials shown separately.
Venting, gas-line, electrical, condensate, expansion-tank and drain-pan work explicitly included or excluded.
Permit and inspection responsibility, old-unit removal, startup and cleanup.
Parts and labor warranty terms, exclusions, schedule and the process for approving added work.
Any incentive shown separately, with current eligibility confirmed before subtracting it from your budget.

Record the full installed price before subtracting any verified incentive. Compare the same scope across quotes; an equipment-only listing and a completed installation are different purchases.

Choose the next step from the finding

An active leak or safety concern

Arrange prompt qualified assessment. A leak may have more than one source; do not diagnose the tank from age alone or wait for a planned review date.

A repairable fault with a clear diagnosis

Compare the written repair scope, warranty coverage and condition with a replacement quote. No age-only rule decides the answer.

A working unit and an efficiency upgrade

Compare installed scope, your actual utility prices and household demand. A higher purchase price does not by itself establish savings or payback.

A quote above the planning range

Ask which line items explain the difference: size, access, venting, electrical work, conversion or local labor. A high quote is not proof of overcharging.

Keep the decision with your home

Save the model, confirmed age, service history and written quote with your home record. Keep unknown details marked as unknown, then use those facts when discussing the next step with Jarvis. A model-based outlook does not replace an installer assessment.

The existing Cost Estimator guide explains its separate whole-home assumptions.

Water-heater cost questions

How much does a 50-gallon water heater replacement cost?

The tank row in HomeScore's v2026.1 model is $1,600–$3,200, with a $2,300 planning midpoint. The 50-gallon heat-pump row is $3,800–$6,500. Fuel, access and required work still need a local written quote.

Why can tankless installation cost more?

Compare the gas supply, venting, condensate, electrical and mounting scope as well as the unit. Tankless sizing considers simultaneous flow and the required temperature rise; a model's headline flow rate alone is not enough.

How should I choose capacity?

Ask the installer to size for your household's hot-water demand. Storage units use a first-hour rating as well as tank volume; tankless units use flow at a specified temperature rise. Heat-pump models also need a suitable location and manufacturer clearances.

Should I replace an older water heater immediately?

Age helps plan, but it does not confirm a fault or an exact failure date. Use the diagnosis, service history, condition, warranty and written repair/replacement scopes. Bring an active leak or safety concern to a qualified professional promptly.

Can I subtract a federal tax credit in 2026?

The federal section 25C home-improvement credit is not available for property placed in service after December 31, 2025. Check current state or utility programs separately and confirm eligibility before budgeting for an incentive.

Why does the Cost Estimator show a different range?

The whole-home Cost Estimator uses home-size and quality bands plus location/age inputs; it does not select these tank, tankless and heat-pump rows. Its separate model is not a quote or a direct like-for-like comparison. Use the type-specific guide to compare equipment scopes and the estimator only for its stated broader scenario.

Sources and method

Source: HomeScore replacement-cost dataset v2026.1, dated 2026-06-17; editorial review 2026-10-16. The source labels its middle value “median”; here it is a planning midpoint, not a measured contractor-price statistic. These three rows are a starting budget for installed replacements, not equipment-only prices. The dataset does not provide an itemized bid or a verified local invoice sample. Ask the installer to state exactly what the bid includes; unusual access, conversions and major enabling work can put it outside these bands.

The public sources below support sizing, installation considerations and tax-credit timing; they do not establish HomeScore's dollar ranges. Local rates and site conditions remain unknown until quoted.

Start with the details you know.

Add your home, save your water-heater details and use your record to plan the next step.

Add your home and see your score