Description
The MRCOOL TruInverter MCAESHV8T4821BA is a 4-ton variable-speed inverter heat pump condenser on R-454B refrigerant, AHRI rated at 18 SEER2 / 9 EER2 / 8.5 HSPF2 with the matching TruInverter air handler. Its inverter compressor modulates continuously to match the load, delivering steadier temperatures, better humidity control and lower energy use than a single-stage system, with heating down to -5°F.
The MRCOOL® Signature Series TruInverter™ 48K Heat Pump Condenser delivers powerful, energy-efficient comfort for larger homes and high-demand living spaces. Designed for reliable year-round performance, it provides an 18 SEER2 rating and an 8.5 HSPF2-4 heating efficiency rating, maintaining precise indoor temperatures while using significantly less energy than traditional systems—helping lower monthly utility bills and long-term operating costs.
At its core is TruInverter™ variable-speed technology, which continuously adjusts compressor output to match real-time demand. This results in smoother temperature control, improved humidity management, quieter operation, reduced system wear, and longer equipment life compared to single- or two-stage systems.
To ensure a faster and more efficient setup, this unit is designed to work with MRCOOL® No-Vac® Quick Connect® line sets, which are pre-charged and eliminate the need for system evacuation. This compatibility significantly saves on installation time and labor by removing the need for specialized vacuum pumps or refrigerant charging in the field.
The condenser is factory-charged with next-generation R-454B refrigerant, an environmentally responsible option that delivers excellent heat transfer with a lower global warming potential. This supports current and future efficiency standards while simplifying installation and reducing labor and handling risks.
Built for quiet performance, the system operates at approximately 70 decibels, with a sound-dampening top that minimizes noise without restricting airflow—ideal for homes with patios, outdoor living areas, or nearby neighbors. Durability is reinforced with a steel louver coil guard and wire fan discharge grille to protect against debris and harsh weather.
A service-friendly design with sweat-connection service valves and an accessible gauge port makes installation and maintenance faster and easier. Backed by a 10-year limited parts warranty and a limited lifetime compressor warranty, the MRCOOL® TruInverter™ 48K offers dependable performance, long-term reliability, and peace of mind—making it a smart, future-ready investment in whole-home comfort.
Key Features
- Variable-speed inverter compressor: Modulates capacity to the load for steady comfort.
- Cold-weather heating: Operates in heating down to -5°F.
- R-454B refrigerant: Low-GWP A2L refrigerant.
- EEV metering: Electronic expansion valve for precise refrigerant control.
- Quiet: 70 dBA rated sound level.
Product Specifications
| Brand | MRCOOL |
|---|---|
| Model | MCAESHV8T4821BA |
| Series | Signature Series TruInverter |
| SEER2 | 18 |
| EER2 | 9 |
| COP 47 | 3.2 |
| HSPF2-4 | 8.5 |
| Tonnage | 4 |
| Cooling Capacity (BTU) | 47,000 |
| Heating Capacity (BTU) | 47,000 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 60 |
| Min Circuit Ampacity (A) | 35 |
| Color | Gunmetal |
| Refrigerant Type | R-454B |
| Refrigerant Volume (oz) | 141.09 |
| Decibel Rating (dBA) | 70 |
| Inverter | Yes |
| Min Ambient Cool (°F) | 5 |
| Min Ambient Heat (°F) | -5 |
| Max Lineset Length (Ft) | 100 |
| Liquid Line Size | 3/8 |
| Suction Line Size | 7/8 |
| Compressor Motor Type | Variable Rotary |
| Condenser Fan Motor Type | DC |
| Metering Device | EEV |
| Base Warranty | 10 Year Parts, Lifetime Compressor |
| Base Parts Warranty | 10 Year |
| Net Depth (in) | 29.125 |
| Net Height (in) | 33.19 |
| Net Width (in) | 29.125 |
| Net Weight (lb) | 190 |
Compatibility & Installation
- Matched system: Pairs only with the TruInverter air handler of the same tonnage (MCAEAMPVT) and the XK-120D3 TruInverter smart wired controller.
- Line set: Sweat connections, 3/8 liquid / 7/8 suction; line set not included.
- Professional installation: Licensed HVAC contractor required; R-454B is an A2L refrigerant.
