This Device is designed for homes 2500 Sq. Feet or less. Used for correcting power factor and lowering ampacity use for the entire home. Houses over 2500 Sq. Ft. could also use this unit as long as the motor load is not excessive, however it is recommended to step up to the R2000 unit. Consult Electrical-Etc... if you have any questions regarding the proper size unit that is right for you. PLEASE TAKE NOTE: ALL ELECTRICAL EQUIPMENT SALES ARE FINAL. E.S.D. UNITS HAVE A FIVE YEAR LIMITED REPLACEMENT WARRANTY.