This high-capacity MRCOOL® HVAC bundle includes one MRCOOL® Signature Series 42k Heat Pump Condenser and one MRCOOL® Signature Series 42k Multi-Position Air Handler, delivering powerful, energy-efficient heating and cooling all year long. Engineered for modern environmental standards, flexible installation, and long-term reliability, this system is an ideal upgrade for larger homes needing dependable comfort in every season.

Powerful, Year-Round Climate Control — MRCOOL® Signature Series 42k Heat Pump Condenser

Built for consistent, high-output performance, the 42k Heat Pump Condenser offers:

• 14.3 SEER2 / 11.7 EER2 efficiency for reliable heating and cooling with reduced energy costs

• Factory pre-charged R-454B refrigerant, supporting low-GWP environmental compliance and faster installation

• A durable single-speed scroll compressor designed for long-term, stable operation

• Inner-groove copper tubing for enhanced heat transfer and improved overall efficiency

• Integrated temperature and pressure sensors for real-time system protection

• An intelligent defrost function that maintains smooth operation in cold weather

• Quiet 65 dB performance, supported by a sound-dampening top ideal for residential neighborhoods

• Rugged protection with a steel louver coil guard and wire fan discharge grille

• Compact, flexible design for easier placement in various installation environments

• Service-friendly access, including accessible ports and sweat connection valves

• Industry-leading warranties: 10-year limited parts warranty and limited lifetime compressor warranty

Built to perform through extreme heat and winter cold, this condenser provides reliable, efficient comfort year after year.

Flexible, High-Efficiency Airflow — MRCOOL® Signature Series 42k Multi-Position Air Handler

Perfectly matched to the included heat pump condenser, the 42k Multi-Position Air Handler delivers:

• Full compatibility with R-454B refrigerant for modern, eco-friendly performance

• Multi-position installation options—upflow, downflow, or horizontal

• A slim, space-saving profile ideal for attics, closets, crawl spaces, and other tight areas

• Galvanized steel cabinet for long-term structural strength

• High-performance copper “A” coils with enhanced aluminum fins for optimal heat transfer and humidity control

• A high-efficiency ECM blower motor for strong airflow with lower energy consumption

• Internal thermal insulation to minimize energy loss, reduce condensation, and quiet operation

• Simple, fast installation designed to reduce labor and complexity

• A built-in air filter rack for easy maintenance

• Optional electric heat kit for enhanced cold-weather heating power

• Compatibility with most third-party smart thermostats, offering flexible control without proprietary restrictions

• Backed by a 10-year limited parts warranty

With flexible installation options and efficient year-round performance, this air handler delivers powerful, evenly distributed comfort.

A Complete, High-Capacity Home Comfort Solution

Combined, the 42k heat pump condenser and multi-position air handler create a robust, energy-efficient HVAC system engineered for large residential spaces. Featuring modern refrigerant technology, quiet operation, flexible installation, and strong warranty protection, this MRCOOL® system provides reliable comfort and long-term value for any home.

• Heat Pump Brochure
• Air Handler Brochure
• Heat Pump Installation & Owner's Manual
• Air Handler Installation & Owner's Manual
• Heat Pump and Air Handler Limited Warranty
• AHRI Certificate
• Energy Guide