4 Ton Horizontal Piston Cased (Omniguard) Evaporator Coil, 17.5" Width Furnace Cabinet, EAC1P48B-50

Armstrong Air EAC1P48B-50 – 4 Ton Cased Evaporator Coil with Omniguard™ Protection

The Armstrong Air EAC1P48B-50 is a 4-ton cased evaporator coil engineered for upflow and downflow applications. Built for compatibility with R-410A and R-22 refrigerants, this coil features a fully insulated cabinet and precision-matched components for optimal integration with Armstrong Air systems. Designed to deliver consistent airflow and efficient heat exchange, it is well-suited for residential installations requiring durable and efficient performance.

This model incorporates Armstrong’s MHT™ (Multi-Tube Heat Transfer) technology, which enhances refrigerant distribution and thermal performance. The Omniguard™ coating provides added protection against corrosion, while a Microban®-infused drain pan inhibits microbial growth in the condensate system. The cabinet is constructed from heavy-gauge galvanized steel with an embossed finish and low air leakage ratings.

Product Features

• Omniguard™ Coil Coating: Factory-applied corrosion protection enhances coil longevity and reliability
• Microban® Drain Pan: Inhibits mold and bacterial growth in moisture-prone areas of the cabinet
• MHT™ Technology: Rifled copper tubes and optimized fin geometry improve heat transfer and refrigerant efficiency
• Cabinet Insulation: Closed-cell foam minimizes air leakage to under 2% for improved energy performance
• Service Access: External distributor body and single-position drain simplify field connections and maintenance

Specifications

• Model: EAC1P48B-50
• Capacity: 4 Tons
• Refrigerant: R-410A / R-22
• Airflow Range: 1000–1800 CFM
• Liquid Line Connection: 3/8 inch
• Suction Line Connection: 7/8 inch
• Cabinet Dimensions: 23-3/4" L x 21-3/4" W x 30-5/8" H

Installation Considerations

This unit is designed for use in upflow or downflow configurations and is best installed by qualified HVAC professionals. Proper refrigerant handling, airflow balancing, and condensate management are essential for system performance and code compliance. The coil should be matched with compatible Armstrong Air equipment to meet specified SEER ratings.

Contractor Applications

The EAC1P48B-50 is ideal for system upgrades, changeouts, or new construction projects. Its corrosion-resistant design and factory-assembled casing reduce install time and long-term maintenance requirements, making it a dependable option for residential jobs demanding performance and serviceability.