3 Ton Upflow R-410A TXV Cased Omniguard Evaporator Coil, 17.5" Width Furnace Cabinet

Armstrong Air EAC4X36B-50 – 3 Ton Omniguard™ Aluminum Cased Evaporator Coil

The Armstrong Air EAC4X36B-50 is a 3-ton aluminum cased evaporator coil designed for compatibility with R-410A refrigerant systems. Engineered to match Armstrong Air furnaces and air handlers, this coil utilizes proprietary Omniguard™ technology to deliver long-term corrosion resistance and performance in residential HVAC applications.

This model features a factory-installed TXV for precise refrigerant metering, MHT™ (Maximum Heat Transfer) coil design for improved thermal efficiency, and Microban®-treated drain pans to help inhibit microbial growth. The cabinet is fully insulated for reduced air leakage and enhanced efficiency, making it a solid choice for high-efficiency systems.

Core Features

• Nominal Capacity: 3 Ton
• Omniguard™ Coil Coating: Provides added protection against corrosion from moisture and airborne contaminants
• MHT™ Technology: Optimized refrigerant distribution and rifled tubing enhance heat transfer and system capacity
• Microban® Drain Pans: Antimicrobial protection helps reduce odors and biological buildup
• Insulated Cabinet: Factory-applied insulation minimizes air loss to less than 2% for improved energy efficiency
• Factory-Installed TXV: Ensures proper refrigerant flow under varying load conditions
• Dual Drain Design: Right-side dual port simplifies condensate removal and service
• Aluminum Coil Construction: Lightweight and corrosion-resistant material for improved longevity

Technical Specifications

• Model: EAC4X36B-50
• Refrigerant: R-410A
• Airflow Range: 800 – 1600 CFM
• Liquid Line Connection: 3/8 in
• Suction Line Connection: 3/4 in
• Dimensions: 23-3/4 in (L) × 21-3/4 in (W) × 27-5/8 in (H)

Installation Guidelines

The EAC4X36B-50 should be installed by a qualified HVAC technician. Proper configuration with matched equipment, refrigerant charging, and airflow setup is essential for system performance and warranty validation. Installation must comply with local mechanical codes and manufacturer instructions.

Professional Application Summary

This coil is designed for use in residential split systems requiring reliable, corrosion-resistant evaporator performance. Its compatibility with Armstrong Air gas furnaces and air handlers makes it an integral component of matched-efficiency system installations targeting long-term serviceability and thermal performance.