A big part of keeping your heat pump in proper condition is catching problems as early as possible. The faster you can identify a problem with your heat pump, the faster you can get it repaired and the better off it’ll be. The best way to identify issues early enough to prevent them from causing a lot of damage is to schedule preventive maintenance. You should be doing that at least twice a year, once in spring and once in fall. Problems can and will crop up between appointments, though, so it’s important to know what warning signs to look for. Strange noises is at the top of the list as far as those warning signs go.