Trane XR14 Series 2 Ton 24400 BTU 4TWR4024G1000A unit is a 14 SEER outdoor split system single stage heat pump that is a reliable and efficient heating and air conditioning system suitable for your home and commercial space. Its increased energy efficiency will help lower the HVAC costs of your home as you’d want. Besides, the base of this single stage heat pump is made of a CMBP-G30 weatherproof material that resists corrosion.