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These items have a check box ( ) for your installer to indicate which features are used in your system. As an EPA ENERGY STAR Partner, Home Automation, Inc. has determined that this thermostat meets the ENERGY STAR guidelines for energy efficiency. MAINTENANCE Your new thermostat is maintenance free. There is no battery to install or replace. If necessary, clean unit carefully with a mild soap solution on a soft cloth. 1 ABOUT HEAT PUMPS... A heat pump is a mechanical refrigeration system that o