MRCOOL
MRCOOL Universal Series 48,000 BTU Air Handler
4 Ton | R-454B | 115/208/230V
- 4 Ton capacity
- Uses R-454B refrigerant
- Runs on 115/208/230V power
Key Specifications
Product Overview
The MRCOOL® Universal® Series 48K Air Handler is a high-efficiency HVAC solution engineered to deliver consistent, year-round comfort while helping homeowners cut down on energy costs. Whether you're upgrading an aging system or installing new equipment, this unit offers the ideal combination of performance, efficiency, and reliability.
Designed with installation flexibility in mind, the Universal® 48K supports multiple configurations—including vertical, horizontal, and downflow setups—making it a versatile fit for a wide range of spaces. Its compact design allows for seamless placement in tight or unconventional areas. For added convenience, the unit is compatible with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately), which arrives pre-charged to eliminate the need for vacuuming or flaring—significantly simplifying installation and saving on labor.
The system also supports Universal® Series Heat Kits, offering increased heating capability during cold weather and providing peace of mind with 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—all while keeping the unit lightweight. Built from 100% aluminum, the coil is corrosion-resistant, ensuring long-term durability with minimal maintenance.
Operating at quiet sound levels similar to a household conversation or dishwasher, the Universal® 48K blends comfort with discretion. Backed by a 10-year parts warranty and a 2-year limited labor warranty, this air handler is a smart investment in your home’s comfort and efficiency.
Additional specifications
| UPC | 840255587853 |
|---|---|
| Series | Universal R-454B |
| Airflow (CFM) | 1601/1442.1/1265.5/1088.9/N\A |
| Cycle (Hz) | 60 |
| Min circuit ampacity (A) | 14.5/10 |
| Max fuse / breaker (A) | 15 |
| Metering device | EXV |
| Max line set length (ft) | 246 |
| Filter type | Replaceable |
| Filter size | 20 x 20 x 1 |
| Mount type | Multi-Position |
| Sound level low (dBA) | 33.5 |
| Sound level high (dBA) | 53 |
| Aux heater included | No |
| Aux heater available | Yes |
| Aux heater sizes (kW) | 8 KW / 10 KW / 15 KW / 20 KW |
| UL listed | Yes |
| ETL listed | Yes |
| Parts warranty (years) | 10 Years |
| Shipping W x H x D (in) | 25 x 59.84 x 31.1 |
| Shipping weight (lbs) | 232.14 |
Documents
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
Technical Specifications
Performance
| System Type | Universal Series Air Handler |
|---|---|
| Tonnage | 4 Ton |
| Sound Level | N\A/53/49.5/33.5/N\A dBA |
Electrical & Fuel
| Voltage | 115/208/230V |
|---|---|
| Phase | Single Phase |
| Refrigerant | R-454B |
| Connection Size | Liquid 3/8" / Suction 3/4" |
Physical & Certifications
| Dimensions (W x H x D) | 21.5 x 55.94 x 21.5 |
|---|---|
| Weight | 186.51 lb |
| Color / Finish | Dark Grey |
Shipping & Delivery
Manufacturer Warranty
Covered by MRCOOL's limited warranty. Warranty terms are set by MRCOOL and differ by product line — whether registration is required, and whether the installation has to be performed by a state-licensed HVAC contractor, is not the same across the range. In every case coverage depends on the unit being installed according to MRCOOL's instructions and all applicable codes and permits. MRCOOL's warranty document for this model is the controlling source; ask us and we'll send you the one that applies.
Professional Installation Recommended
Most HVAC equipment must be installed and connected by a licensed professional to remain safe, code-compliant, and eligible for manufacturer warranty coverage. If you're unsure about installation requirements, contact us before you order.
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