PEPCO offers a variety of rebates to Maryland customers who purchase select energy efficient products. Rebates are available on light bulbs, refrigerators, freezers, clothes washers, dehumidifiers, room a/c units, water heaters, heat pump water heaters, HVAC equipment and equipment tune-ups. All appliances must be Energy Star and water heaters must have an Efficiency Factor of at least 0.93 to receive rebate. All HVAC equipment must meet program efficiency requirements in order to receive rebates.