Route safety events out of the sales flow. A CO alarm should send occupants outside to fresh air and to 911 or the fire department; a suspected gas leak should follow the serving utility's current emergency instructions from a safe location. Do not bury these exceptions below a lead form.
Classify the normal request. Ask whether there is no heat, intermittent heat, airflow without warmth, repeated shutdown, noise, odor without suspected gas, a thermostat issue, or a maintenance question. Capture equipment type, approximate location, error display, and whether another technician has diagnosed it.
Describe the first visit. State the service area and hours, whether the request is a callback or confirmed appointment, diagnostic or after-hours fee, what accessible systems are checked, and when the customer receives findings and a repair price. Never imply every fault is fixed during the first visit.
Separate options and authorization. Present repair, defer-and-monitor, and replacement evaluation only when supported. Show which work requires customer approval, how additional faults are handled, whether the diagnostic fee is credited, and what happens if a required part is unavailable.
Make the quote inspectable. Separate diagnostic, labor, parts, other materials where applicable, after-hours fees, permits, access work, taxes, and exclusions. Distinguish manufacturer parts coverage, contractor labor coverage, registration conditions, and a new-part warranty from the whole system.
Verify operation and handoff. Explain the documented closeout: controls, operating sequence, temperature response, airflow or filter observations, combustion and venting checks where applicable, unresolved conditions, safe-use instructions, invoice, and the path if the symptom returns.