HVAC-specific fields to include
An HVAC invoice is also a service record for the equipment. The next tech, the manufacturer and the homeowner's warranty claim will all need the details you write down today.
- Your state license number (most states license HVAC contractors) and, for refrigerant work, note that the tech holds EPA Section 608 certification.
- Equipment make, model and serial number for each unit you worked on: condenser, air handler, furnace, heat pump.
- Refrigerant type and pounds added, for example "R-410A, 2 lb". Owners and regulators care about leaks.
- What you found and what you did: symptom, cause, repair.
- Readings after the repair (temperature split, static pressure) if you took them.
- Parts and labor warranty, kept separate. Note whether the manufacturer warranty needs the equipment registered.
- Maintenance plan status, if the customer has one.
Common HVAC charges
| Item | Typical US price |
|---|---|
| Diagnostic / service call | $89–$175 |
| After-hours or weekend fee | $100–$250 |
| AC tune-up | $100–$200 |
| Furnace tune-up | $90–$180 |
| Run capacitor, installed | $150–$350 |
| Contactor, installed | $150–$300 |
| Blower motor, installed | $450–$1,200 |
| Refrigerant R-410A, per lb | $75–$150 |
| Clear condensate drain | $120–$250 |
| Smart thermostat, installed | $200–$450 |
| Annual maintenance plan (2 visits) | $150–$300 |
| New 3-ton central AC system, installed | $6,500–$13,000 |
Refrigerant prices move with supply. Newer systems use A2L refrigerants such as R-454B and R-32, and they're priced differently from R-410A, so list the type on every line.
Repairs, tune-ups and replacements
Repairs are billed on completion. Most shops charge a diagnostic fee and then a flat price per repair from their price book. Many waive or credit the diagnostic if the customer approves the repair; say so on the invoice when you do.
Tune-ups and maintenance plans are cheap visits that keep customers coming back. Bill the plan once a year and list each visit as "Included in plan, $0" so the customer sees what they get for it.
System replacements are big tickets. Send an estimate with the equipment model and SEER2 rating, take a deposit when the equipment is ordered, and invoice the balance after install and startup. Include the model and serial numbers of the new units and the permit number, if one was pulled, on the final invoice.
Tips for faster HVAC payments
- Hand over the invoice before you leave, while the house is cooling down again.
- Explain the after-hours fee on the phone and show it as its own line.
- Write the symptom in the customer's words ("no cooling upstairs"). They recognize their own problem and accept the fix.
- List refrigerant by the pound. "Refrigerant: $400" invites questions; "R-410A, 2 lb × $110" doesn't.
- Offer the maintenance plan in the notes. A customer who just paid for a failed capacitor is open to a yearly check.
Last checked October 23, 2026.