The answer to 'when to service heat pump' is that most experts recommend servicing your heat pump at least once per year, ideally in the spring before the summer cooling season. Regular maintenance is essential to keep your heat pump running efficiently and prevent expensive breakdowns.
During a tune-up, an HVAC technician will clean the system, check refrigerant levels, test electrical components, and make any necessary adjustments. They may also recommend replacing the air filter, which should be done every 1-3 months depending on usage and indoor air quality.