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MRCOOL Universal Series 48K BTU Multi-Position Air Handler | 4 Ton, R-454B, Multi-Speed | Model UAH18048-O

SKU: UAH18048-ON/AAvailability : In StockIn StockOut of stock
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MRCOOL® Universal® 48K Air Handler | High-Efficiency, Flexible Indoor Climate Control

The MRCOOL® Universal® 48K Air Handler delivers consistent, energy-efficient heating and cooling year-round. Designed for flexibility, it supports vertical, horizontal, and downflow installations to fit various spaces, including tight or unconventional areas. Featuring an advanced M-shaped aluminum evaporator coil for improved airflow and corrosion resistance, this high-efficiency unit operates quietly and integrates seamlessly with Quick Connect® line sets for hassle-free installation.

Key Features:

✅ High-Efficiency Performance: Delivers consistent heating and cooling while reducing energy costs.
✅ Flexible Multi-Position Design: Supports vertical, horizontal, and downflow configurations for versatile placement.
✅ Compact & Adaptable: Fits into tight or unconventional spaces without compromising performance.
✅ Quick Connect® Compatible: Works with MRCOOL® NO-VAC® Quick Connect® line sets (sold separately) for vacuum-free, simplified installation.
✅ Optional Heat Kits Available: Universal® Series Heat Kits increase heating capability and provide emergency backup in cold climates.
✅ Advanced M-Shaped Coil: 100% aluminum evaporator coil improves heat exchange, airflow, and system efficiency.
✅ Quiet Operation: Runs at sound levels comparable to a conversation or dishwasher for discreet comfort.
✅ Strong Warranty Protection: Backed by a 10-year parts warranty and a 2-year limited labor warranty.

Technical Specifications:

  • Capacity: 48,000 BTU

  • Installation Options: Vertical, Horizontal, Downflow

  • Coil Construction: 100% Aluminum, M-Shaped Design

  • Compatibility: NO-VAC® Quick Connect® line sets (sold separately), Universal® Series Heat Kits (optional)

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

Ideal For:

  • Whole-home heating and cooling in larger homes

  • Installations requiring versatile placement in tight or unconventional spaces

  • Upgrading older, inefficient HVAC systems

  • Homeowners seeking high-efficiency, quiet, and flexible indoor climate control

ModelUAH18048-O
Unit TypeUniversal Series Air Handler
UPC840255587853
GTIN00840255587853
ConfigurationFloor Mounted
Mount TypeMulti-Position
Air Flow DirectionDownflow, Horizontal, Upflow
Air Flow (CFM)1601 / 1442.1 / 1265.5 / 1088.9 / N/A
Number of Speeds4
Cooling Capacity4 Ton
Blower MotorMulti Speed
Electrical Phase1-Phase
Voltage240V (115/208/230 compatible)
Cycle60 Hz
Max Overcurrent Protection15 amps
Min Circuit Ampacity (A)14.5 / 10
Heat Strip CompatibilityUp to 20 kW
Auxiliary Heater IncludedNo
Auxiliary Heater AvailableYes
Auxiliary Heater Sizes8 KW / 10 KW / 15 KW / 20 KW
System Application TypeCentral Split Systems
Line Set Connection TypeQuick Connect, Flared, or Sweat
Max Lineset Length (FT)246
Liquid Line Size3/8 inch
Suction Line Size3/4 inch
Metering DeviceEXV (Electronic Expansion Valve)
RefrigerantR-454b
Filter TypeReplaceable
Filter Size20 x 20 x 1 inches
Decibel Rating (dBA)N/A / 53 / 49.5 / 33.5 / N/A
Decibel Rating Low (dBA)33.5
Decibel Rating High (dBA)53
Product Height (in)55.9 (55.94 net)
Product Length (in)21.5
Product Width (in)21.5
Weight (lbs)186.5 (186.51 net) / 232.14 gross
ColorDark Grey
Warranty10 Year, 10 Year Parts, 2 Year Labor
UL ListedYes
CSA ListedYes
ETL ListedYes
California Residentssee Prop 65 WARNING

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