First Company 25HXS1002UBV000AAF Fan Coil Unit R-454B

Product Description

The FIRST COMPANY 25HXS1002UBV000AAF is an uncased, ceiling-mount fan coil unit designed for indoor use in split system HVAC applications. It ships with a factory-installed electric heater package and a thermostatic expansion valve (TXV) for refrigerant metering, reducing field assembly time and ensuring consistent refrigerant control out of the box. The unit is engineered for R-454B refrigerant, a lower-global-warming-potential alternative to R-410A that meets current and emerging regulatory requirements. Licensed HVAC technicians handling R-454B must hold the appropriate EPA Section 608 certification for the refrigerant type. This air handler is built for ceiling installation in residential or light commercial split system configurations.

The 25HXS1002UBV000AAF is intended for ceiling-mount, uncased installations in split system applications where the indoor air handler is paired with a compatible R-454B outdoor condensing unit. The factory-installed TXV meters refrigerant flow to match the system load, and the integrated electric heater package provides supplemental or primary heat depending on system design. This configuration is suited for residential new construction, light commercial retrofit, or multi-zone installations where ceiling placement optimizes airflow distribution. Verify voltage requirements, heater kilowatt rating, cabinet dimensions, airflow orientation, and outdoor unit compatibility before ordering and before beginning installation.

Key Features

• Factory-installed TXV for precise refrigerant metering without field-added components
• Integrated electric heater package installed at the factory for reduced field labor
• R-454B refrigerant compatible, aligning with current and upcoming low-GWP regulations
• Uncased design allows integration into custom or existing cabinetry and ceiling plenum spaces
• Ceiling-mount orientation suited for applications where floor or closet placement is not practical

Compatibility

Designed as an OEM-style indoor fan coil for ceiling-mount split system installations using R-454B refrigerant. Confirm matched outdoor unit compatibility, voltage, heater kilowatt rating, and airflow orientation with the equipment design documentation before installation.

Installation Notes

Installation should be performed by an EPA Section 608 certified HVAC technician familiar with A2L refrigerant handling requirements applicable to R-454B systems. Disconnect and lock out all electrical power to the system before servicing or connecting the unit. Verify that supply voltage, circuit ampacity, and overcurrent protection match the unit nameplate ratings before energizing. Follow all applicable local mechanical and electrical codes, including NEC requirements for electric heater circuits, when completing the installation.

Technical Specifications

• Refrigerant Type: R-454B
• Expansion Device: Factory-installed TXV
• Heater: Factory-installed electric heater package
• Cabinet Style: Uncased
• Mount Orientation: Ceiling mount
• System Type: Split system air handler

Standard Information

• Brand: FIRST COMPANY
• Manufacturer Part Number: 25HXS1002UBV000AAF