How to price an HVAC job: flat-rate vs. time-and-material
A practical framework for pricing HVAC work profitably, when flat-rate beats time-and-material, and how to build a rate that actually covers overhead.
Most shops that struggle with cash flow do not have a demand problem. They have a pricing problem. Here is how to build a number that covers your costs and leaves a real profit.
Start with your fully-loaded hourly cost
Before you can price a job, you need to know what an hour of billable field time actually costs you. Add up your annual overhead: wages and payroll burden, trucks, fuel, insurance, tools, software, rent, and your own salary. Divide by your billable hours, not total hours. A tech who works 2,080 hours a year is usually only billable for 1,200 to 1,400 of them after drive time, callbacks, and admin.
If your fully-loaded cost is $95/hour of billable time and you want a 30% net margin, your break-even billing rate is closer to $135/hour than the $85 your competitor advertises.
Flat-rate vs. time-and-material
Time-and-material (T&M) bills the customer for actual hours plus parts markup. It is simple and feels fair, but it punishes efficiency: the faster and better your tech is, the less you earn. It also invites disputes over hours.
Flat-rate prices the task, not the clock. You publish (or quote) a fixed price for “replace a condenser fan motor” regardless of whether it takes 45 minutes or 90. Customers know the price upfront, your best techs become your most profitable, and closing rates go up because there is no meter running.
For most residential and light-commercial service work, flat-rate wins. Reserve T&M for genuinely unpredictable work: diagnostics on old equipment, large commercial retrofits, or anything where scope is unknown.
Building a flat-rate book
- Time each common task honestly across a few techs and take the average.
- Multiply by your billing rate to get labor.
- Add parts at your marked-up cost (2x to 3x on small parts is normal).
- Add a diagnostic/trip fee that stands on its own.
- Round to a clean, confident number.
Review the book at least twice a year, and immediately whenever supplier costs move. A distributor price change that you do not pass through is margin you simply gave away.
Do not compete on price
The lowest bidder wins the jobs nobody profitable wants. Compete on response time, cleanliness, communication, and warranty. Price is what you charge; value is why they say yes.
This guide is general information for HVAC professionals, not legal or financial advice. Some outbound links may be affiliate or sponsored links, which are disclosed and never affect our recommendations.