Most HVAC systems should be professionally serviced once a year — cooling systems in spring and heating systems in fall — while a home with both a furnace and AC, or a heat pump that runs year-round, is better served by two visits a year.
Last updated June 14, 2026 · Published by Boston Comfort Pros
The right cadence depends on the equipment. A standalone air conditioner or furnace needs one professional tune-up a year, timed to its season. A home with both heating and cooling effectively has two systems, so two visits a year keep each one ready. A heat pump that heats and cools runs in every season, which is why it benefits from being serviced twice rather than once.
A professional visit goes beyond a filter change: checking refrigerant charge and airflow on cooling equipment, inspecting the heat exchanger and combustion on furnaces and boilers, testing electrical connections and controls, and clearing condensate drains. Homeowners on r/hvacadvice often note that the systems that fail early are usually the ones that never got looked at — which matches the field reality that most no-heat and no-cool emergencies trace back to a small issue that a yearly visit would have caught.
In the Boston area, the practical rhythm is cooling service in spring before the first heat wave and heating service in fall before the cold sets in, since New England design temperatures sit around 7°F and a heating system gets tested hard. If a system is already acting up, it's worth booking furnace or AC service rather than waiting for the next seasonal tune-up.
A heat pump that both heats and cools should be serviced twice a year — once before the cooling season and once before heating season — because it runs year-round rather than seasonally.
Skipping service tends to lower efficiency, raise energy bills, and let small problems grow into breakdowns. Many manufacturer warranties also require documented annual maintenance to stay valid.
Homeowners can change filters and keep the outdoor unit clear of debris, but combustion checks, refrigerant, electrical, and safety inspections should be done by a professional.
