Carrier PGB448115K000B 4 Ton R-454B Packaged Gas Unit

Product Description

The CARRIER PGB448115K000B is a 4-ton packaged gas/electric unit designed for entry-level commercial and residential rooftop applications. It operates on R-454B refrigerant, a lower-GWP alternative to R-410A, making it compliant with current and near-term refrigerant regulations. The unit integrates heating and cooling into a single cabinet, simplifying installation on rooftop curbs or ground-level pads. HVAC technicians handling light commercial rooftop replacements or new construction installs will find this unit suited to standard tonnage and refrigerant requirements for the application class.

The PGB448115K000B fits typical entry-level packaged unit applications where a single rooftop cabinet handles both gas heating and vapor-compression cooling. It is appropriate for light commercial buildings, small offices, retail spaces, and similar structures requiring a self-contained, ducted HVAC solution. Installation follows standard rooftop packaged unit procedures with conventional curb or ground-mount configurations.

Key Features

• 4-ton nominal cooling capacity for light commercial and residential applications
• R-454B refrigerant — lower global warming potential, aligned with current regulatory direction
• Packaged gas/electric design — heating and cooling in a single cabinet
• Entry-level configuration suitable for standard replacement and new-construction projects

Compatibility

Designed as an OEM packaged gas/electric rooftop unit for entry-level light commercial and residential ducted systems requiring 4-ton cooling capacity and R-454B refrigerant.

Installation Notes

Installation must be performed by a licensed HVAC technician certified to handle A2L refrigerants, as R-454B carries a mild flammability classification requiring specific handling and leak-detection protocols. Shut off all electrical power and gas supply to the site before connecting ductwork, refrigerant lines, or gas piping. Follow local mechanical codes, IFGC requirements for gas connections, and NEC requirements for electrical connections. Verify curb dimensions and duct openings match unit specifications before setting the cabinet.

Technical Specifications

• Cooling Capacity: 4 Ton (nominal)
• Refrigerant Type: R-454B
• Unit Type: Packaged Gas/Electric
• Dimensions (L x W x H): 2 inches

Standard Information

• Brand: CARRIER
• Manufacturer Part Number: PGB448115K000B