Air conditioner maintenance on Rheem unit near Highland Park. Replace furnace filter. An annual ac tune up maintenance and cleaning can prolong the life of you air conditioner reducing the chances of a costly ac repair. North Shore Heating and Cooling in Glenview, Illinois offers seasonal specials for a air conditioner tune up as well as a furnace tune-up. Call today for an appointment at 847-729-1040. Our trucks are always on the north shore serving the areas of Northbrook, Deerfield, Highland Park, Wilmette, Winnetka and surounding communities. Visit our website for more information about our yearly service contract and special offers/coupons at www.northshoreheatingandcooling.com/special-offers.