GOODMAN 14 SEER PACKAGED GAS/ELECTRIC UNIT, R-410A, 3.0 TON, 60 MBTU/HHigh-efficiency compressor with internal relief valve | ECM blower motor | R-410A chlorine-free refrigerant | Durable, corrosion-resistant T-140 aluminized steel tubular heat exchanger | Aluminum tube / aluminum fin coils | Direct spark ignition system | Self-diagnostic blower operation and safety circuits | Redundant gas valve and easy conversion to propane | Heavy-guage galvanized-steel cabinet with attractive Architectural Gray high-quality UV-resistant powder-paint finish | Horizontal or downflow multi-position application | Louvered condenser coil protection | All models comply with California Low NOx emission standards | AHRI certified; ETL listed