What does “no leak” mean here?

Ask which locations and conditions were checked, whether the furnace was operating, and whether the utility left any appliance instructions. The phrase can be repeated without the original scope attached. You need that scope before deciding what is still unanswered.

The furnace evaluation is about the installed appliance. Carrier's professional care guidance includes burner and heat-exchanger checks, vent condition, and fuel-supply components. The exact tests should follow the installed model's instructions. Carrier furnace service guidance.

We recommend asking for a written explanation that answers three questions:

  • What concern did you investigate?
  • What observations or measurements support your finding?
  • Is the furnace cleared for use, or what work must happen first?

A repair recommendation should connect to a confirmed condition. It should not jump from “strong smell” to “new furnace” without explaining the reason. Equally, “no gas leak found” should not become “nothing can be wrong with the furnace.”

Tell the service provider when the odor began, whether it changed after service, and how often you notice it. Share existing observations without reproducing the smell or standing near exhaust. Keep any shutdown or red-tag instruction in effect while the remaining question is resolved. If the utility and contractor give different directions, request a joint clarification before restarting the equipment.