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Sample plumbing estimate

Tankless water heater install estimate example

A tankless swap is a water heater job plus a gas job plus a venting job, and the bid has to say so.

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What the plumber typed

"remove 50 gal tank, install 199k btu condensing tankless, upsize gas line to 3/4, new 3in pvc vent thru wall, isolation valves, permit"

What the customer got
Mike's Plumbing LLC
Proposal #2474 · September 13, 2026
Prepared for Sara Ellis
Scope of work
• Remove and haul off the existing 50-gallon tank water heater.
• Install a 199,000 BTU condensing tankless water heater.
• Upsize the gas line to 3/4 inch from the meter to the unit.
• New 3-inch PVC vent through the exterior wall.
• Isolation valves for future flushing.
• Permit and inspection included.
Total
$4,850
Timeline
1 day
Payment
50% upfront, 50% on completion
Warranty: 1 year on labor, manufacturer warranty on the unit · Deposit at signing: $2,425
Type your full name to accept this proposal. This is a legally binding electronic signature.
Full name
Accept and pay $2,425 deposit

Example figures for a typical tankless water heater install job. Not a quote. Every line on the estimate came from the notes above. Nothing was added.

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