How to price an HVAC install or replacement (and put the estimate in writing)

• 1. Split equipment, labor and allowances
• 2. Price labor from the actual job, not from “a changeout is X”
• 3. Write down what is NOT included
• 4. Protect the scope when you open the system
• 5. Take a deposit before you order equipment
• 6. Put it in one written estimate the customer can sign

You’ve already walked the house, you’ve sized the equipment, and you can do the swap. The money disappears when the written estimate is vague: the customer thought the permit, the new thermostat and the rusted plenum were included. Here’s a method you can reuse on every changeout.

§1. Split equipment, labor and allowances

List the equipment (make and model, or an equal-or-better allowance) on its own lines, then labor as its own line. Permits, crane or lift time, electrical, a new pad, and flue or liner work belong in allowances when you don’t control the final cost yet. An allowance is not a guess you eat later. Write the amount and what happens if the real cost comes in higher: a signed change order before that work starts.

§2. Price labor from the actual job, not from “a changeout is X”

A like-for-like swap in a basement with clear access is not the same job as a tight attic changeout, a fuel conversion or a new line-set run. Estimate hours for recovery, disconnect, set, braze, evacuate, start-up and haul-away. Multiply by a rate that covers wages, the truck, insurance, callbacks and the profit you need. A rate that only covers the tech’s wage means you work for free on every overhead dollar.

§3. Write down what is NOT included

Electrical upgrades, a new disconnect, duct repairs, an unlevel pad, a condensate pump, permits pulled by others, and refrigerant beyond the factory charge are the usual surprises. If it isn’t listed as included, say it is excluded. Say that extra work takes a signed change order, with its own price, before you start it.

§4. Protect the scope when you open the system

Changeouts turn up rusted coils, undersized returns, non-compliant vents and cabinets that should have been replaced years ago. Your estimate should say you will stop and quote that work before you do it. That one sentence is what keeps a straight replacement from turning into unpaid remodeling.

§5. Take a deposit before you order equipment

Equipment is ordered, and often non-returnable, the day you buy it. A deposit that covers the equipment, or a clearly stated share of the total, protects you if the customer cancels after you’ve purchased. Write when the rest is due (usually before start-up or on completion) and how long the price is good for, because equipment pricing moves.

§6. Put it in one written estimate the customer can sign

A solid HVAC install estimate covers: existing equipment and location, new equipment (make and model or allowance), labor, permits and inspections, electrical, pad, flue and line-set assumptions, disposal, start-up and warranty handoff, exclusions, the change-order process, deposit and payment schedule, and the date the price expires.

BidLogik turns these details into a ready-to-send proposal in minutes, for any trade, and you can start on the free plan.

• Construction and trade bid proposal template: https://www.bidlogik.com/construction-bid-proposal-template?utm_source=nostr_longform&utm_medium=guide&utm_campaign=hvac-install-pricing
• Plans and pricing: https://www.bidlogik.com/pricing?utm_source=nostr_longform&utm_medium=guide&utm_campaign=hvac-install-pricing

This guide is general information, not legal, licensing or code advice. Check local permit, EPA and licensing rules for your area.