Three people are installing equipment. cyrus is installing a heating system, aletta is installing a cooling system, and francis is installing a cooling system. which best describes the possible equipment they could install? cyrus is installing an air conditioner, aletta is installing a furnace, and francis is installing a heat engine. cyrus is installing a furnace, aletta is installing a heat pump, and francis is installing an air conditioner. cyrus is installing a heat pump, aletta is installing a thermostat, and francis is installing a furnace. cyrus is installing a thermostat, aletta is installing an air conditioner, and francis is installing a heat engine.