* Our written guarantee: If you do not save 25% on your first year energy bills, we will write you a check for the difference up to $500. You get a Certificate on completion of the project. ** This product qualifies for the $1,500 Federal Tax Credits for Consumer Energy Efficiency Program. *** Definition: MERV, Minimum Efficiency Reporting Value. This is a standardized rating for air conditioning and heating filters. Receive a free RX4CleanAir AirSweeper MERV 11 Whole-Home Air Filtration System, Retail Value $499.00. This is for a limited time offer expiring January 31st. Installation not included. Can not use in combination with other offers.
