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Denver HVAC Companies

Choosing a Denver HVAC company

Questions to ask an HVAC company at the estimate

Questions that show whether an HVAC bid was measured or guessed: sizing, ducts, the coil, the permit and the warranty.

Updated October 17, 2026

A good estimate visit is mostly measuring.

About the house

  • How did you work out the size, and can I see the load calculation?
  • Did you check the return air, the filter and the duct sizes?
  • Which rooms will this fix, and which ones won't it?
  • What stays: ducts, line set, coil, thermostat wiring?

About the paperwork

  • What are the exact model numbers, indoor and outdoor?
  • Are the permit, removal, electrical and duct work included?
  • What could cause a change order, and how will I approve it?
  • If there is a rebate, who files it, and is it its own line on the bid?

Xcel Energy lowered its heat pump bonus for Xcel gas customers on October 1, 2026. Check current rebates on our site before you trust an old flyer.

About afterward

Ask who you call when something goes wrong, how long the labor warranty runs, and whether the parts warranty depends on registering the equipment. Get the answers written on the bid.

Send us photos or book an estimate, and ask us the same questions.

Sources

  1. Denver contractor licensing
  2. Denver contractor license search
  3. ACCA Manual J residential load calculation
  4. ENERGY STAR HVAC quality installation
  5. Denver heat pump and HVAC installation