How it works

1. 1. IntakeWhat is happening, when it started, system age, error codes and photos of the equipment labels.
2. 2. DiagnosisElectrical, airflow, refrigerant and combustion checks before parts are quoted.
3. 3. Written optionsRepair and replacement options, itemized, with warranties and expected life.
4. 4. WorkDone to the manufacturer's installation instructions and local code, with permits where required.
5. 5. CommissioningRefrigerant charge, airflow, temperature split and safety controls verified and recorded.
6. 6. Follow-upWarranty registration, filter schedule and the next maintenance date.

For a new system

A quality replacement adds a load calculation, a duct check, matched equipment with an AHRI certificate, and a walk-through of the thermostat and maintenance. See the buying guide.

What you should receive

• An itemized invoice with model and serial numbers.
• Warranty registration confirmation.
• Commissioning readings (or at least the key ones).
• Permit and inspection sign-off where required.