How often should a furnace be serviced?

Once a year, ideally in early fall before heating season. An annual tune-up keeps efficiency up, catches small problems before they become expensive failures, and verifies the heat exchanger is intact — a cracked heat exchanger can leak carbon monoxide into your living space.

Vinson and Sill's $139 HVAC Assurance tune-up covers a full inspection and cleaning. Preferred Partner members get annual HVAC tune-ups included in their membership.