MCAESHS4T4221AA
NON DIY - Licensed HVAC Installation
Description
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.
Find the Brochure HERE.
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Key Specs
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
Warranty: 10-year limited parts warranty and limited lifetime compressor warranty
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Compatibility
Signature Series R-454B Multi-Position Air Handler
Signature Series R-454B Stud Mount Air Handler
Disclaimer:
The compatibility information provided in this article is specific to units within the same series. While additional compatibility with other series and units may exist, it is not detailed here. For further assistance or confirmation of compatibility with other systems, please contact MRCOOL support.
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Warranty
The MRCOOL warranty provides comprehensive coverage for your unit when installed by a licensed professional.
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Quick Links
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- Warranty Registration
- Warranty Information
- Rebate Center
- Install Manual
- AHRI
- Energy Guide
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📞 (270) 366-0457
📧 support@mrcool.com
📝 Submit a support ticket
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