Universal Series 48,000 BTU Air Handler

Sandra
Updated

NON DIY - Licensed HVAC Installation

UAH18048-O

Description

The MRCOOL® Universal® Series 48K Air Handler is a high-efficiency HVAC solution engineered to deliver consistent, year-round comfort while helping homeowners reduce energy costs. Whether you're upgrading an aging system or installing new equipment, this unit offers an excellent combination of performance, efficiency, and reliability.

Designed with installation flexibility in mind, the Universal® 48K supports multiple configurations—including vertical, horizontal, and downflow installations—making it a versatile fit for a wide range of applications. Its compact design allows for installation in space-conscious or unconventional locations.

The unit is compatible with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately) and supports Universal® Series Heat Kits, which provide increased heating capacity during cold weather and emergency backup heat when needed.

Inside, the air handler is equipped with an advanced M-shaped evaporator coil that maximizes surface area for heat exchange, enhances airflow, and improves overall system efficiency while maintaining a compact design. Constructed from 100% aluminum, the coil is corrosion-resistant for long-term durability.

Quiet operation helps maintain a comfortable indoor environment without unnecessary noise.

Backed by a 10-year parts warranty and a 2-year limited labor warranty when installed by a licensed professional, the MRCOOL® Universal® 48K Air Handler delivers reliable, efficient, and long-lasting HVAC performance.

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Key Specs

  • Brand: MRCOOL®

  • Series: Universal® R-454B

  • System Type: Universal Series Air Handler

  • Tonnage: 4 Ton (48,000 BTU)

  • Voltage: 115 / 208 / 230V, Single Phase, 60 Hz

  • Mount Type: Multi-Position (Upflow, Downflow, Horizontal)

  • Refrigerant Type: R-454B 

  • Decibel Rating: 33.5–53 dBA

  • Number of Speeds: 4

  • Line Set Compatibility: MRCOOL® NO-VAC® Quick Connect® line set

  • Liquid Line Size: 3/8 in

  • Suction Line Size: 3/4 in

  • Filter Type: Replaceable

  • Filter Size: 20 x 20 x 1 in

  • Metering Device: EXV

  • Auxiliary Heater Options: 8kW, 10kW, 15kW, 20kW (sold separately)

  • Color: Dark Grey

  • Certifications: UL, CSA, and ETL Listed

  • Warranty: 10-Year Parts and 2-Year Limited Labor Warranty

  • Net (W x D x H): 21.5" x 21.5" x 55.94"

  • Net Weight: 186.5 lbs

  • Gross Weight: 232.1 lbs

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Compatibility

Universal Series 48,000 BTU Heat Pump Inverter Condenser

Universal R-454B Heat Kits

5th Gen R-454B No Vac Line Sets 3/8" - 3/4"

 

Disclaimer:

The compatibility information provided in this article is specific to units within the same series. While additional compatibility with other series and units may exist, it is not detailed here. For further assistance or confirmation of compatibility with other systems, please contact MRCOOL support

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Warranty

The MRCOOL warranty provides comprehensive coverage for your unit.

    

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Quick Links

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📞 (270) 366-0457
📧 support@mrcool.com
📝 Submit a support ticket

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