An add-on heat pump is an air-source heat pump designed to be installed on to a forced air furnace heating system. The forced air furnace can be new or existing, and can be fueled with natural gas, propane or fuel oil. The add-on heat pump replaces the current central air conditioner and works in conjunction with your present furnace, regardless of fuel type.
An add-on heat pump works with your existing heating system. In the summer, it works like a central air conditioner, transferring heat from your house to the outside air. In the winter, it transfers heat indoors from the outside air. The existing forced air furnace provides booster heat during extremely cold winter weather. The add-on heat pump works automatically with the forced air furnace to provide continuous temperature control.
An add-on heat pump system combines the best features of two types of equipment. During milder winter weather, the heat pump transfers heat from the outside air, rather than creating it. During most of the winter, the heat pump operates efficiently and costs less to heat your house than a fossil fuel furnace. During severe winter weather, when the heat pump's capacity and efficiency drop because of low outdoor temperatures, the forced air furnace takes over automatically to provide constant heating comfort.
Although the initial cost of an add-on heat pump may be more than a central air conditioner unit, an add-on system will provide savings over time that will more than make up for the initial investment. Operating costs for heating with an add-on heat pump system are generally 10-25% less than with a conventional furnace.
To find out more about the advantages of an add-on heat pump, contact your local dealer or your local NPPD office.
If you have questions, contact Cornhusker Public Power District at 800-955-2773.