MRCOOL Signature Series 3.5 Ton 14.3 SEER2 Air Conditioner Condenser | MCAESAS4T4221AA

Summary

The MRCOOL® Signature Series 42k Cooling Only Condenser is built to provide reliable, energy-efficient cooling for homeowners who want dependable performance and lower utility bills. With a 14.3 SEER2 and 11.7 EER2 rating, this system offers consistent comfort while keeping energy consumption in check, making it a great fit for both replacement projects and new installations. Pre-charged with environmentally friendly R-454B refrigerant, this unit complies with modern environmental regulations while maintaining strong cooling capacity and dependable performance. At the heart of the system is a durable scroll compressor, engineered to deliver steady, reliable operation over time with minimal wear. To further enhance performance, the unit is equipped with inner-groove copper tubing, which maximizes surface area and significantly improves thermal conductivity and heat transfer efficiency. Despite its robust output, the system is designed with noise reduction in mind, operating at a low 65 decibels, comparable to the sound of a household dishwasher. A sound-dampening top minimizes operational noise without limiting airflow, making this unit ideal for installation in residential areas where quiet performance is valued. For added durability, it features a steel louver coil guard and wire fan discharge grille, which offer strong protection for critical internal components. The unit's compact, lightweight design makes it easy to position in tight spaces, while thoughtful service-friendly features like sweat connection valves and an easy-access gauge port streamline both installation and ongoing maintenance. To top it off, MRCOOL® offers a 10-year limited parts warranty and a limited lifetime compressor warranty, offering dependable protection and lasting value.

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

• 42,000 BTU cooling capacity (3.5 Ton)
• 14.3 SEER2 efficiency rating
• 11.7 EER2 efficiency rating
• Durable 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
• Steel louver coil guard for component protection
• AHRI certified
• Extended 150 ft maximum line set length
• 2950 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

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 42k Cooling Only Condenser features a durable scroll compressor designed for maximum durability and energy-efficient operation. The high-efficiency inner-groove copper tubing enhances heat transfer efficiency while the sound-dampening top reduces operational noise to just 65 decibels. Built with quality components and protective features including a steel louver coil guard, this 3.5-ton air conditioner condenser delivers reliable performance for consistent comfort in larger residential spaces. With its 14.3 SEER2 cooling efficiency, this unit provides energy-saving operation without compromising on powerful cooling capacity.

Installation Advantages

This 3.5-ton air conditioner condenser simplifies installation with its pre-charged R-454B refrigerant system. The unit supports extended line set lengths up to 150 feet, providing maximum flexibility for various installation scenarios. The compact cabinet design allows for efficient placement while maintaining accessibility to service valves and gauge ports for straightforward maintenance. The unit is designed to work with Signature Series Multi-Position or Stud Mount Air Handlers for complete system compatibility. With its powerful 2950 CFM airflow and durable construction, this condenser is an ideal cooling solution for larger residential applications requiring reliable and quiet operation.