Make sure the system has a good humidifier that works by evaporation to prevent clogging because forced air heat is very dry. If the home has a basement humidifier, its heating costs will be lower. Humidifiers are often not maintained properly. A professional home inspector should be able to report if the system needs to be serviced. Electric heat pumps are becoming increasingly popular because their operating costs are 30 to 35 percent less than other types of electric heat.
Heat pumps work by transferring heat from outdoors to inside, like an air conditioner in reverse.
You may also find supplementary heaters in a home where the main system has not been extended to an enclosed porch, addition or finished attic. Operating costs are usually lower if heat can be extended from the main system to these areas. Many old homes do not have central heat at all or have antiquated or ineffective systems. If you find them, you should note them as problem areas. Once you make the decision to purchase a home, we recommend that you have a professional inspector determine the condition and adequacy of the unit.