MRCOOL Signature Series 4 Ton 14.3 SEER2 Heat Pump Condenser | MCAESHS4T4821AA

Summary

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 at a quiet 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 parts from debris and damage. With compact design, accessible service valves, and a 10-year limited parts warranty and a limited lifetime warranty, the MRCOOL® Signature Series 48k Heat Pump Compressor is a smart investment in year-round comfort and reliability.

Important

AHRI certified - meets industry standards. Register your product to activate warranty coverage. This condenser contains R-454B refrigerant, which is classified as an A2L refrigerant. To comply with safety standards, this unit must be paired with an R-454B air handler or evaporator coil equipped with a leakage detection system. Failure to comply with these requirements may result in safety hazards and could void the warranty.

Key Features

• 48,000 BTU cooling capacity (4 Ton)
• 45,000 BTU heating capacity
• 14.3 SEER2 efficiency rating
• 11.2 EER2 efficiency rating
• 7.5 HSPF2 heating efficiency
• Heavy-duty scroll compressor for reliable operation
• Quiet operation (65 dBA)
• Pre-charged with R-454B refrigerant
• Factory pre-charged for 15-foot line set
• Compact design for easy installation
• Built-in protection sensors
• Intelligent defrost function
• AHRI certified
• Extended 150 ft maximum line set length
• High-capacity 4000 CFM airflow

Complete Technical Specifications

Performance Features

Warranty Information

• Registered Warranty: 10 years parts, limited lifetime compressor
• Base Warranty: 10 years parts, limited lifetime compressor
• Registration may be required for full warranty coverage

Manuals & Certifications

• Product Brochure
• Installation Manual
• Warranty Information
• AHRI Certification
• Energy Guide

Safety Information

PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Advanced Technology

The MRCOOL Signature Series 48k Heat Pump Condenser features a heavy-duty scroll compressor designed for maximum durability and energy-efficient operation. The inner-groove copper tubing enhances heat transfer efficiency while the specially designed sound-control top reduces operational noise to just 65 decibels. Built-in sensors monitor internal temperature and pressure conditions, providing protection against extreme operating environments. The intelligent defrost function ensures optimal performance even in colder temperatures down to 5°F. With its 14.3 SEER2 cooling efficiency and 7.5 HSPF2 heating efficiency, this 4-ton heat pump condenser delivers powerful performance for year-round comfort in large residential spaces.

Installation Advantages

This 4-ton heat pump condenser simplifies installation with its pre-charged R-454B refrigerant system. The unit supports extended line set lengths up to 150 feet, providing exceptional flexibility for challenging installation scenarios. The compact cabinet houses all parts including the heavy-duty scroll compressor system. The accessible service valves and gauge ports make maintenance straightforward. The unit is designed to work with Signature Series Multi-Position or Stud Mount Air Handlers for complete system compatibility. With its high-capacity 4000 CFM airflow and durable construction featuring steel louver coil guard, this condenser is a dependable HVAC solution for large residential applications requiring maximum heating and cooling capacity.