Eversource and nationalgrid electric customers can receive a $30 rebate from Sponsors of Mass Save^® for turning in an old dehumidifier in working condition. Drop by Warrendale Appliance, 170 High St., Waltham, MA 02453 on Saturday, April 14 between 10:30 a.m. and 2:30 p.m. You can recycle your old dehumidifier for free and apply for a $30 rebate for doing so. See the Mass Save website for more information and for restrictions.