4 Ton Rheem 13.4 SEER2 R-454B Single Stage Air Conditioner Packaged Unit RACBYB048AJT000NA

The Rheem RACBYB048AJT000NA is a 4-ton packaged air conditioner, which means the cooling equipment sits in one outdoor cabinet instead of being split between an indoor air handler and a separate condenser. It uses a newer, lower-impact refrigerant that already meets the EPA’s 2025 environmental rules, so you don’t have to worry about a major equipment change later.

Because everything is in one unit, it is a good fit for tighter lots, slab homes, manufactured homes, and installations where there is little room for indoor equipment. The cabinet can sit on the ground or a rooftop and can even be placed close to the house without blocking airflow. Raised metal base rails keep the unit off the ground, and a louvered outdoor coil guard helps protect it from weather and yard damage.

Inside the cabinet, all-aluminum coils resist corrosion and use less refrigerant than older coil designs. A quiet scroll compressor handles everyday cooling, and easy-access panels plus a slide-out blower section make service simpler when a technician needs to work on it.

A built-in refrigerant safety system watches for leaks. It works with a standard 24-volt thermostat and will automatically shut the unit off if it detects too much refrigerant in the air.

This model ships without factory electric heat, but optional heat kits can be added later if you want backup warmth on cooler days. Altogether, it is a compact, service-friendly cooling package designed for dependable comfort in a smaller outdoor footprint.