Description
The MRCOOL TruInverter MCAESHV9T3621BA is a 3-ton variable-speed inverter heat pump condenser on R-454B refrigerant, AHRI rated at 19 SEER2 / 10 EER2 / 9.0 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™ 36K Heat Pump Condenser delivers powerful, energy-efficient comfort year-round, making it an ideal solution for homeowners seeking consistent performance, lower energy costs, and long-term reliability. With efficiency ratings of 19 SEER2 for cooling and 9 HSPF2-4 for heating, it maintains precise indoor temperatures while using less electricity than traditional fixed-speed systems.
At the core of the system is TruInverter™ variable-speed technology, which continuously adjusts output to match real-time demand. This eliminates temperature swings, improves humidity control, reduces system wear, and delivers quieter operation—enhancing comfort while extending equipment life.
To further streamline the setup process, this unit is designed to work with MRCOOL® No-Vac® Quick Connect® line sets, which are pre-charged and eliminate the need for vacuuming or evacuation. This specialized compatibility significantly reduces installation time and removes the need for expensive specialized tools, making the process faster and more reliable for installers.
The TruInverter™ 36K is factory-charged with R-454B refrigerant, a next-generation, environmentally responsible option that provides excellent heat-transfer performance with significantly lower global warming potential. Factory charging also simplifies installation, reduces labor time, and minimizes refrigerant handling errors.
Designed for quiet operation, the unit runs at just 68 decibels, comparable to a household dishwasher, with a sound-dampening top that reduces noise without restricting airflow. Rugged construction includes a steel louver coil guard and wire fan discharge grille to protect against debris and harsh weather, while a service-friendly layout makes installation and maintenance easier.
For added peace of mind, the system is backed by a 10-year limited parts warranty and a limited lifetime compressor warranty. Combining inverter efficiency, quiet performance, durable construction, and strong warranty protection, the MRCOOL® TruInverter™ 36K is a smart, long-term investment in dependable 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: 68 dBA rated sound level.
Product Specifications
| Brand | MRCOOL |
|---|---|
| Model | MCAESHV9T3621BA |
| Series | Signature Series TruInverter |
| SEER2 | 19 |
| EER2 | 10 |
| COP 47 | 3.5 |
| HSPF2-4 | 9 |
| Tonnage | 3 |
| Cooling Capacity (BTU) | 34,000 |
| Heating Capacity (BTU) | 36,000 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 35 |
| Min Circuit Ampacity (A) | 22 |
| Color | Gunmetal |
| Refrigerant Type | R-454B |
| Refrigerant Volume (oz) | 100.53 |
| Decibel Rating (dBA) | 68 |
| 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 | 3/4 |
| 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) | 24.94 |
| Net Width (in) | 29.215 |
| Net Weight (lb) | 146 |
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 / 3/4 suction; line set not included.
- Professional installation: Licensed HVAC contractor required; R-454B is an A2L refrigerant.
