Efficient total home comfort all year, that is what you get with this MRCOOL complete split system. For horizontal applications, this is a powerful and versatile system that boasts feature like variable speed operation that provides accurate and efficient comfort and low-static operation making it an idea solution for all types of homes including modular. This is a heat pump system that provides efficient heating out of the box. For additional heating options, MRCOOL MX series heat strip kits are available and sold separate. The Signature series by MX is the perfect combination of savings on both HVAC equipment and your energy bill. Color: Gray.