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The Carrier WeatherMaker 48FE Series Model 48FEFM20A3A5-0A0A0 is a 17.5-ton commercial gas packaged rooftop unit designed to provide reliable year-round heating and cooling for commercial buildings. Combining two-stage gas heating with two-stage electric cooling, this all-in-one rooftop system helps deliver dependable comfort while simplifying equipment replacement and installation through Carrier's legacy-compatible rooftop platform.
The integrated gas heating system provides low, medium, and high gas heating input option of 400,000 Btuh, respectively. Two-stage heating operation helps match heating output to changing building demand. The system incorporates solid-state electronic direct-spark ignition, flame roll-out safety protection, and exclusive IGC anti-cycle protection to support dependable and safe gas-heating operation.
The electric cooling system provides 17.5-ton nominal cooling capacity with a 14.5 IEER rating. Two-stage cooling operation allows the system to adjust cooling output to changing commercial loads, helping support efficient operation and consistent indoor comfort.
With a 14.5 IEER rating and direct-drive EcoBlue™ Technology, this system is designed to provide efficient commercial cooling with reduced mechanical complexity. The Vane Axial indoor fan uses an electronically commutated motor in a beltless direct-drive configuration, eliminating belts, blower bearings, and shafts associated with conventional belt-drive systems. The unit uses Puron Advance™ R-454B refrigerant, which has a global warming potential of 466 and is designed to meet EPA low-GWP requirements. A UL 60335-2-40 certified A2L leak detection and dissipation system is factory installed as standard.
The packaged rooftop configuration combines gas heating, electric cooling, indoor fan, controls, and related components into a single outdoor unit, helping simplify equipment placement and preserve valuable indoor space. The 17.5-ton 48FE platform measures approximately 127 inches long by 86 inches wide by 49 inches high and has an approximate unit weight of 1,800 pounds. The platform uses the same footprint as prior Carrier models for original-fit replacement applications and provides provisions for thru-the-bottom power entry, single-point gas, electric, and controls connections, and a full-perimeter base rail with built-in rigging adapters and fork-truck slots.
The WeatherMaker 48FE incorporates a new unit control board with intuitive quick fan-speed adjustment and onboard diagnostics with LED error-code designation. Two-stage heating and cooling operation provides additional flexibility for matching equipment output to changing building demand. Optional SystemVu™ integrated communicating controls and RTU-Open communicating controls are available for compatible commercial applications.
The Carrier WeatherMaker 48FE Series is designed for commercial rooftop applications where dependable gas heating and efficient electric cooling are required in a packaged configuration. Its 17.5-ton capacity, two-stage heating and cooling, legacy-compatible footprint, and packaged rooftop design make it well suited for offices, retail spaces, restaurants, schools, warehouses, and other commercial buildings requiring reliable rooftop climate control.
The unit features easy-grip access panels, no-strip access-panel screws, a tool-less filter access door, and a simplified control-box arrangement to help streamline routine service. EcoBlue™ direct-drive fan technology uses a Vane Axial design with an electronically commutated motor and eliminates belts, blower bearings, and shafts associated with conventional belt-drive systems. The new control board facilitates simple safety-circuit troubleshooting and intuitive fan-speed adjustment. Scroll compressors include internal line-break overload protection, while high- and low-pressure switch protection supports reliable cooling operation.
The Carrier WeatherMaker 48FE Series includes a standard limited warranty consisting of 10 years parts-only coverage for an aluminized heat exchanger, 15 years parts-only coverage for a stainless-steel heat exchanger, 5 years parts-only coverage for the compressor, 3 years parts-only coverage for the SystemVu™ controller, and 1 year parts-only coverage on all other parts. Additional extended warranty packages are available.
Experience reliable year-round commercial comfort with the Carrier WeatherMaker 48FEFM20A3A5-0A0A0. Combining two-stage gas heating and two-stage electric cooling with Puron Advance™ R-454B refrigerant and EcoBlue™ direct-drive fan technology in one legacy-compatible rooftop system, it provides a practical solution for commercial replacement and new-installation applications.
Packaged Unit Buyers Guide
