Start with one all-in price for each replacement
A retail listing can help you choose equipment. It cannot tell you the full cost of putting that equipment in your home. Ask for a written installed quote with the exact model and the work included. A low equipment price is not enough to call an option cheaper.
This checklist is a way to organize quotes, not a market price survey. Your installer must confirm which work applies to your home.
Ask what is included
- Equipment: model number, tank capacity, and the proposed unit.
- Labor: removal, installation, startup, and testing.
- Plumbing: connections, valves, and any required changes.
- Electrical: whether the existing supply fits the selected model and whether electrical work is included.
- Site work: access, clearances, and any required changes to the location.
- Condensate or venting: what the selected system needs and who supplies that work.
- Permits and disposal: whether these are included or billed separately.
- Taxes and exclusions: what could still increase the final bill.
DOE's installation guidance covers location selection, permits when needed, preparation, and removal of the old unit. These are reasons to check the scope instead of comparing tank prices alone. Source: DOE installation guidance.
A heat pump option needs a site check
Heat pump water heaters draw heat from the surrounding air. DOE notes that installation requirements include temperature and space. Ask the installer to check the chosen model's instructions for your actual location; do not assume every utility closet is suitable. Source: DOE heat pump water heater overview.
Ask about noise, airflow, condensate handling, and hot-water demand as well. If a required change is outside the quote, obtain its cost before treating that quote as complete.
Avoid counting installation twice
Illustrative arithmetic: equipment of $1,500 plus installation and other required work of $1,000 gives an installed total of $2,500. Enter $2,500 as installed cost. If a written quote already includes those same costs, use its total; do not add them again. These amounts are examples, not current retail prices.
Ask whether a displayed discount has already been deducted. Do not enter the same rebate again under incentives. Leave unverified incentives at $0 until you confirm eligibility and how the quote treats them.
Put the amounts into the matching fields
- My combined repair quote: one total for today's repair. If several repairs share a service call or labor, use the combined quote rather than adding overlapping estimates.
- Installed cost under Standard tank: the complete standard replacement cost before any incentives you enter separately.
- Installed cost under Heat pump water heater: the complete heat pump replacement cost on the same basis.
- Step 2 incentives: only confirmed amounts that are not already deducted.
- Step 2 annual operating costs: estimates for your usage and local rates, not the upfront installation bill.
Use the same comparison period for all three paths. In this calculator, the repair path includes a later replacement if the expected repaired life ends inside that period. The breakeven section shows a repair-bill limit for that comparison; it is not a promise that a repair will last. The model uses today's replacement costs and entered incentives for that later replacement. It does not forecast future prices, future incentive eligibility, or discount future costs. Try a second comparison without incentives if timing could change eligibility.
Handle gaps before choosing
Ask each installer to fill in missing items. Compare equivalent capacity and a workable installation, not simply the cheapest model. Keep uncertain costs visible and try a higher-cost case. If a small change flips the result, the decision needs better quotes rather than a stronger headline.
Cost is only part of the choice. Warranty scope, timing, reliability, and fit still matter. This guide does not provide installation instructions or decide local code requirements.
Use your actual quotes
Run the comparison, review Step 2, then inspect Results and breakeven.
Open the water heater calculator →Keep reading
The full repair-or-replace guide · Try a worked example · Example cost sources