Firstco 9-320-373 Hot Water Coil for 30/36/37RAQ Aquatherm Air Handlers

The Firstco 9-320-373 is a high-performance hot water heating coil designed specifically for 30RAQ, 36RAQ, and 37RAQ series Aquatherm air handler units. This OEM replacement coil is engineered to deliver reliable hydronic heating for 2.5 to 3.0 ton capacity systems.

Key Specifications:

• Coil capacity: 2.5-3.0 ton rating
• Core dimensions: 16" wide x 20" high
• Overall size: 18" width x 20" height x 2.5" depth
• 3-row coil configuration for efficient heat transfer
• Includes integrated circulating pump
• 7/8" OD copper tube connections
• Copper tube with aluminum fin construction

Construction Features:

• Seamless copper tubes mechanically expanded into aluminum fins
• Factory-mounted manual air vent for proper system venting
• Galvanized steel frame casing
• Pressure tested to 350 PSI air, rated for 300 PSIG working pressure
• Brazed joints for leak-free operation

This factory-authorized replacement coil ensures optimal performance and compatibility with Firstco RAQ series recessed wall-mounted Aquatherm air handlers. The included circulating pump provides efficient water circulation through the heating system.