GSZ160421, ASPT47D14 3.5 Ton 16 SEER Multi Speed Goodman Central Heat Pump Split. Size: 3.5 Ton. Avg Coverage: 1,750 – 2,100 Sq Ft. Type: Central Heat Pump Split System. When you own a Multi-Speed Goodman Heat Pump Central Split System, you’re creating your energy future. The 3.5 ton GSZ160421 heatRead More