Home furnaces and similar systems may need to be checked by a professional technician. Swink pointed out that anyone can make a visual inspection, but might need the services of an experienced, trained technician for a closer look. Attention needs to be given to possible rust build-up on furnace burners. Cleaning might be needed to produce a clean blue flame. Professional service can reduce operating costs and provide preventive maintenance that will head off more expensive repairs.
Heat pumps have special requirements, starting with the indoor filter.
Swink said having a clean filter on the heat pump is more critical than filter maintenance in an air-conditioning system. Condensers also need attention and, like automobiles, a regular oil change. And, by the way, car owners might want to check the anti-freeze level in the family car, too. Putting some blankets in the trunk could help stave off the cold if the vehicle breaks down.