Description
The MRCOOL Signature Series MCAESHS4T4821AA is a 4-ton (48,000 BTU) heat pump condenser factory charged with low-GWP R-454B refrigerant and AHRI rated up to 14.3 SEER2 / 11.2 EER2 and 7.5 HSPF2 with the matching Signature Series air handler. A single-speed scroll compressor, inner-groove copper tubing and a sound-dampening top make it a dependable, quiet replacement for older R-410A equipment.
The MRCOOL® Signature Series 48k Heat Pump Condenser is a high-capacity, all-season system built to deliver powerful and efficient heating and cooling year-round. With a 14.3 SEER2 and 11.2 EER2 rating, it ensures consistent indoor comfort while helping reduce energy costs.This model comes pre-charged with R-454B refrigerant, a modern, low-GWP alternative that complies with current environmental standards.
It offers reliable performance with a smaller environmental footprint. The factory charge also speeds up installation, reducing labor time for contractors and minimizing hassle for homeowners.A heavy-duty single-speed scroll compressor sits at the heart of the system, designed to provide steady operation across a wide range of conditions. Inner-groove copper tubing improves heat exchange, boosting system efficiency.
Integrated temperature and pressure sensors protect against stress from extreme temperatures, while an intelligent defrost function prevents ice buildup during colder weather.Despite its large output, the unit operates quietly at just 65 decibels, comparable to a typical dishwasher.
A specially designed sound-control top helps reduce operating noise without affecting airflow, making it a good fit for residential areas.Built for long-term durability, the unit features a steel louver coil guard and wire fan discharge grille to protect internal components from debris and damage.
With a compact design, accessible service valves, and warranty protection including a 10-year limited parts warranty and a limited lifetime compressor warranty, the MRCOOL® Signature Series 48k Heat Pump Condenser is a smart investment in year-round comfort and reliability.
Key Features
- Scroll compressor: Dependable single-speed scroll compressor.
- R-454B refrigerant: Factory pre-charged A2L refrigerant for the current efficiency standards.
- Built-in protection: Temperature and pressure sensors guard the compressor.
- Intelligent defrost: Demand defrost keeps heating output up in cold, wet weather.
- Quiet operation: About 63 dB with a sound-dampening top.
- Durable cabinet: Steel louvered coil guard and wire fan grille.
- Service-friendly: Sweat-connection service valves and an accessible gauge port.
- Warranty: 10-year limited parts and limited lifetime compressor warranty (registration required).
Product Specifications
| Minimum Circuit Ampacity | 30 A |
|---|---|
| Maximum Fuse / Breaker | 50 A |
| Refrigerant Connections | 3/8" liquid, 3/4" suction (sweat) |
| Sound Level | 65 dB(A) |
| Unit Dimensions (W x H x D) | 29.14" x 32.8" x 29.14" |
| Unit Weight | 223 lb |
| Brand | MRCOOL |
| Model | MCAESHS4T4821AA |
| Series | Signature Series (R-454B) |
| Cooling/Heating Capacity | 42k |
| SEER2 Rating | 14.3 |
| EER2 Rating | 11.7 |
| Refrigerant | Pre-charged with R-454B |
| Compressor | Single-speed scroll compressor for steady, long-lasting performance |
| Heat Transfer | Inner-groove copper tubing for faster, more efficient heat transfer |
| Built-In Protection | Temperature and pressure sensors for system monitoring |
| Defrost Function | Intelligent defrost for smooth cold-weather performance |
| Noise Level | Quiet operation at 65 decibels with sound-dampening top |
| Durability Features | Steel louver coil guard and wire fan grille |
| Service-Friendly Features | Compact design and accessible service ports |
Compatibility & Installation
- Matched system: Pairs with the Signature Series R-454B multi-position air handler (MCAEAMP) of the same tonnage.
- Line set: Sweat (brazed) connections; line set not included.
- Professional installation: Must be installed by a licensed HVAC contractor; R-454B is an A2L refrigerant.
