How many HVAC quotes should I get?

Get at least three itemized HVAC quotes so you can compare equipment, labor scope, ductwork assumptions, permit handling, and warranty terms.

What makes an HVAC quote suspicious?

A suspicious quote often lacks equipment model numbers, Manual J sizing, permit handling, ductwork notes, warranty terms, or a clear explanation of excluded costs.

Should rebates be deducted from an HVAC quote?

Only deduct rebates or tax credits after eligibility is verified for the installed equipment, date, utility program, state program, and homeowner tax situation.

HVAC quote checker

Is Your HVAC Quote Reasonable?

Use this checklist before you approve a replacement quote. The goal is to spot missing scope and compare bids fairly, not to force every contractor into the same price.

Estimate Cost Range Browse Local Costs

3-Bid Quote Checklist

Equipment brand, model number, tonnage, SEER2/HSPF2, and AHRI match are listed.
The contractor explains Manual J sizing or another defensible load calculation.
Labor, equipment, removal, thermostat, lineset, permit, and disposal are itemized.
Ductwork condition, airflow, and leakage risks are addressed in writing.
Equipment warranty and labor warranty are separated and easy to compare.
Rebates or tax credits are marked as conditional, not guaranteed discounts.

Red Flags to Question

One-line price with no model numbers.
No load calculation or sizing explanation.
No permit or inspection responsibility.
Ductwork excluded without a diagnostic note.
Very low bid that omits removal, electrical, or warranty scope.
Pressure discount that expires before you can get competing bids.

Price

Compare the quote to a local cost range, then ask what is included and excluded. A high quote may be justified by ductwork or premium equipment; a low quote may omit key scope.

Scope

Require line items for equipment, labor, permit, removal, thermostat, lineset, electrical or gas work, and duct corrections.

Risk

Review warranty, change-order terms, rebate assumptions, and what happens if inspection or duct testing reveals extra work.

Questions to Ask Each Contractor

What load calculation did you use to choose this tonnage?

What exact outdoor and indoor model numbers are included?

Who pulls the permit, and are corrections included?

What duct issues did you inspect before quoting?

What is excluded from this price?

Which rebate or tax-credit assumptions are guaranteed in writing?

Methodology

This checker is built around common HVAC replacement quote risks: sizing, equipment specificity, ductwork, permit handling, labor scope, warranty, and incentive assumptions. It is not legal, tax, or contractor licensing advice. Last updated May 6, 2026.