Description
The MRCOOL Signature Series MCAESHS4T4221AA is a 3.5-ton (42,000 BTU) heat pump condenser factory charged with low-GWP R-454B refrigerant and AHRI rated up to 14.3 SEER2 / 11.7 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 42k Heat Pump Condenser is a powerful, energy-efficient solution designed to keep your home comfortable all year. With performance ratings of 14.3 SEER2 and 11.7 EER2, it delivers reliable heating and cooling while helping reduce overall energy use and utility bills.
Whether you’re facing summer heat or winter chill, this system is built to perform.Pre-charged with R-454B refrigerant, this model supports modern environmental standards with a lower global warming potential than older refrigerants. The pre-charged design also speeds up installation and reduces labor costs, making it a smart choice for contractors and homeowners alike.At its core, a single-speed scroll compressor ensures steady, long-lasting performance.
Enhanced with inner-groove copper tubing, the system provides faster, more efficient heat transfer. Built-in temperature and pressure sensors offer real-time system monitoring and protection, while an intelligent defrost function prevents frost buildup for smooth operation in cold conditions.Operating at just 65 decibels, the unit stays quiet enough for residential use, aided by a sound-dampening top.
Durability features include a steel louver coil guard and a wire fan grille for protecting internal components. The compact design allows flexible installation, and accessible service ports simplify maintenance.Backed by a 10-year limited parts warranty and a limited lifetime compressor warranty, the MRCOOL® Signature Series 42k Heat Pump Condenser offers lasting comfort and confidence.
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 | 26 A |
|---|---|
| Maximum Fuse / Breaker | 45 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 | 202 lb |
| Brand | MRCOOL |
| Model | MCAESHS4T4221AA |
| 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.
