Store › ARMSTRONG 4 Ton 18 SEER2 Heat Pump System Image 1 of 1 ARMSTRONG 4 Ton 18 SEER2 Heat Pump System $11,987.00 Heat PumpAir HandlerHeat KitThermostatOutside PadSecondary Drain PanWater Safety SwitchTaxes & Permitting Quantity: Add To Cart Added! Heat PumpAir HandlerHeat KitThermostatOutside PadSecondary Drain PanWater Safety SwitchTaxes & Permitting