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Sample HVAC estimate

Ductwork replacement estimate example

Nobody can see ductwork, so the bid is the only place the customer learns what they bought.

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What the HVAC contractor typed

"replace all attic ductwork, approx 12 runs r8 flex, new supply plenum and return plenum sealed with mastic, 2 new returns, replace 12 boots and registers, static pressure test before and after"

What the customer got
Cool Air Heating & AC
Proposal #2474 · September 13, 2026
Prepared for David Chen
Scope of work
• Remove the existing attic ductwork.
• About 12 new supply runs in R-8 flex duct, properly supported.
• New supply and return plenums, all joints sealed with mastic.
• Two additional returns. Twelve new boots and registers.
• Static pressure test before and after, results on the invoice.
Total
$5,600
Timeline
2 days
Payment
50% upfront, 50% on completion
Warranty: 2 years on workmanship · Deposit at signing: $2,800
Type your full name to accept this proposal. This is a legally binding electronic signature.
Full name
Accept and pay $2,800 deposit

Example figures for a typical ductwork replacement job. Not a quote. Every line on the estimate came from the notes above. Nothing was added.

What to spell out on a ductwork replacement bid

  • Run count, insulation value, and that the plenums are sealed, not taped.
  • The attic conditions: that the price assumes a walkable attic, or that it does not.
  • Registers and boots, with a count, so "I thought those were new too" never happens.
  • A test before and after, with the numbers, which is the proof the job did something.

Many cities require a permit for equipment replacement. Offering repair and replace as two packages on one proposal lets the customer decide without a second visit.

The parts of this estimate

  • Scope of work. 5 lines, one thing each, in the order the work happens. What is not included is on the list too.
  • One price. $5,600. Not a formula, not a range. The scope explains the number.
  • Timeline. 2 days. Including dry time, cure time, or permit time, so the customer plans around it.
  • Payment terms. 50% upfront, 50% on completion. The $2,800 deposit is paid by card when they sign.
  • Warranty. 2 years on workmanship.
  • A way to accept. The customer types their name and signs with a finger on their phone. Legally binding under the E-SIGN Act, and recorded with the date, time, and the exact estimate they agreed to.

Questions HVAC techs ask about this bid

Is a static pressure test worth putting on the bid?

It is the only thing that proves the ductwork changed anything. Put the number on the invoice and the customer feels the price.

Deposit?

Half. Duct, plenums, and registers for a whole house are bought before the first day.

Is this a real quote?

No. The numbers are example figures for a typical job so you can see how a complete estimate reads. Your price is yours.

Can my customer sign this on their phone?

Yes. An estimate sent from BidWriter Pro opens as a link. The customer reads it, types their name, signs with a finger, and pays the deposit by card. You get an alert when they open it and when they sign.

Write your own ductwork replacement estimate

Type the job the way you would text it. It comes out like the one above, in about five seconds. No account needed.

Only what you type goes on the estimate. Nothing gets added.
No account needed to try it.

30 days free, then $29 a month. No card to start. HVAC estimate template · BidWriter Pro for HVAC techs

More HVAC estimate examples

Guides: what to include in an estimate · how to price a job · how to follow up · how much deposit to ask for · the warranty line

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