How to Use the Water Heater Replacement Prompt to Compare Quotes Line by Line

Water heaters tend to fail on a weekday morning, and suddenly you are choosing between three quotes that do not list the same things. One includes the permit, one says the gas line is extra, and one skips haul away entirely. The Home Water Heater Replacement Planner: Tank vs Tankless vs Heat Pump Fit, First Hour Rating Sizing, Permit and Code Items, Quote Comparison Sheet, and Rebate Check prompt lines everything up so you can decide quickly without missing a costly gap.

What the prompt produces

1. A fit table for tank, tankless, and heat pump units in your space.
2. Sizing math using first hour rating for tank and heat pump units and flow rate with temperature rise for tankless.
3. A permit and code items list to confirm with your building department.
4. A quote comparison sheet with missing items called out.
5. A rebate and incentive check list for your utilities and the federal credit.
6. A recommendation with a second best option.
7. Questions to ask each installer before signing.

How to fill the inputs

CurrentHeater comes from the label on your old unit: fuel, tank size, age, venting type, and where it sits. Take a photo of the label before anyone hauls it away.

HotWaterUse is about peak demand, not averages. How many people shower in the same hour? Do you run two showers at once? Do you have a large tub?

InstallSpace decides what is practical. Heat pump units need room air and a condensate drain, tankless gas units often need a larger gas line and new venting, and electric options may need a 240V circuit. Note the room size, panel distance, open breaker slots, gas line size, and drain.

LocationAndUtility lets the prompt list permit items and rebate programs to check. It does not invent amounts.

QuoteText should be pasted as written by each installer. The comparison sheet works best with the real line items.

BudgetAndTimeline separates an emergency from a planned upgrade. A leaking tank changes the math.

Reading the example output

The example is a family of four in Ohio with a leaking 50 gallon gas tank in the basement and three quotes: a like for like gas tank, a tankless unit, and a heat pump water heater.

• The fit table shows the tankless option likely needs a larger gas line and new venting, which the quote listed as extra.
• The sizing section shows the math for two showers at once and a winter temperature rise, and asks you to check each unit's spec sheet.
• The permit list includes a thermal expansion tank, the relief valve discharge pipe, and a draft check for the shared chimney, all marked to confirm locally.
• The quote sheet finds the same missing item in all three quotes: no one mentioned an expansion tank.
• The recommendation picks the heat pump if the installer can add the permit and install within a week, with the gas tank as the fast fallback.

Tips for better results

• Ask each installer for the exact model number. Specs vary between models in the same line.
• Ask whether the permit is included and who schedules the inspection.
• Check utility rebate rules before you buy. Some programs require pre approval or specific models.
• If the old heater shares a chimney with a furnace, ask about venting and draft testing for any new gas unit.

Mistakes to avoid

• Do not size by tank gallons alone. First hour rating tells you more about a busy morning.
• Do not assume a tankless unit drops in where a tank was. Gas line and venting work can change the price a lot.
• Do not skip the permit. Inspections catch venting and relief valve problems that matter for safety.
• Do not do gas or electrical work yourself unless you are licensed where that is required.

Who it is for

Homeowners facing a failed or aging water heater, landlords replacing units in rentals, and handy people who want to understand quotes before hiring a pro.

When you have more time

If your heater is old but not leaking, use the prompt to plan ahead. Get quotes in the off season, check rebate programs, and have an electrician look at panel capacity if you are curious about a heat pump unit. A planned swap gives you more options than an emergency one.

Related PromptDig links

Open the Home Water Heater Replacement Planner: Tank vs Tankless vs Heat Pump Fit, First Hour Rating Sizing, Permit and Code Items, Quote Comparison Sheet, and Rebate Check prompt with your quotes. For more home and life prompts, Browse more prompts. If you have a home project checklist worth sharing, Share a prompt.