MRCOOL Signature 48K BTU 4 Ton 13.8 SEER2 Air Conditionar Condenser and Multi-Position Air Handler (M48C21AA4T4821AC)

The MRCOOL® Signature Series 48k Cooling Only Condenser offers efficient, dependable cooling designed to meet the needs of modern homeowners.

With a 13.8 SEER2 and 11.2 EER2 rating, this unit is built to deliver comfort while helping lower your energy bills. Whether you’re replacing an older system or installing in a new build, this condenser delivers performance you can trust. Pre-charged with R-454B refrigerant, the unit meets current environmental standards while maintaining strong cooling capabilities. At the heart of the system is the reliable scroll compressor, supported by inner-groove copper tubing for efficient heat exchange and improved thermal conductivity. Though powerful, the system is surprisingly quiet. Operating at just 65 decibels, about as loud as a dishwasher or a normal conversation, it’s ideal for residential use where noise can be a concern. A sound-dampening top reduces operating volume, while a steel louver coil guard and wire fan discharge grille further protect internal components from debris, impacts, and unruly weather conditions. With compact sizing and user-friendly service features like sweat connection valves and a convenient gauge port, installation and maintenance are simple. MRCOOL® also includes its industry-leading 10-year limited parts warranty and a limited lifetime compressor warranty.

The MRCOOL® Signature Series 48k Cooling Only Condenser is a strong, smart choice for year-round cooling comfort.

The MRCOOL® Signature Series 48k Multi-Position Air Handler is a powerful and flexible solution for year-round home comfort. Engineered for performance and efficiency, this system works with R-454B refrigerant, offering a more environmentally friendly option that meets modern energy standards without compromising reliability.

Designed to adapt to your space, this air handler supports upflow, downflow, and horizontal installations, making it an ideal fit for a wide range of home layouts. When you’re dealing with limited space, its compact and streamlined design makes installation easy without sacrificing capacity. The cabinet exterior is outfitted with galvanized steel built to withstand wear, along with an interior ECM blower motor that delivers steady airflow while helping reduce energy consumption. The copper “A” coils and aluminum fins provide efficient heat transfer, while thermal insulation along the inside of the cabinet helps reduce condensation accumulation and improve overall system efficiency. Setup is straightforward, cutting down on labor time and cost. Maintenance is just as simple, thanks to the air filter rack, and an optional electric heat kit is available for enhanced heating in colder regions.

For added convenience, this system pairs effortlessly with most third-party smart thermostats, giving you full control over your comfort without being tied to a specific platform. Backed by a 10-year limited parts warranty, the MRCOOL® Signature Series 48k Multi-Position Air Handler delivers reliable, efficient comfort season after season.