Are you having problems with your heating or air conditioning unit? If so, Grassi can help. We are your heating and air conditioning specialists. We serve the Walla Walla, Washington area and its surrounding communities. Our services include: Heating & air conditioning Fireplaces Furnaces Heat pumps Commercial refrigerationWe can help with sales, repairs, maintenance and installation. We serve both residential and commercial clients. We are licensed, bonded, and insured. Call us today for more information.