MRCOOL Signature TruInverter 48K BTU 4 Ton 18 SEER2 Heat Pump Condenser and Multi-Position Air Handler

The MRCOOL® Signature Series TruInverter™ 48K Heat Pump Condenser delivers powerful, energy-efficient comfort for larger homes and high-demand living spaces. Designed for reliable year-round performance, it provides a 18 SEER2 rating and a 8.5 HSPF2-4 heating efficiency rating, maintaining precise indoor temperatures while using significantly less energy than traditional systems—helping lower monthly utility bills and long-term operating costs.

At its core is TruInverter™ variable-speed technology, which continuously adjusts compressor output to match real-time demand. This results in smoother temperature control, improved humidity management, quieter operation, reduced system wear, and longer equipment life compared to single- or two-stage systems. To ensure a faster and more efficient setup, this unit is designed to work with MRCOOL® No-Vac® Quick Connect® line sets, which are pre-charged and eliminate the need for system evacuation. This compatibility significantly saves on installation time and labor by removing the need for specialized vacuum pumps or refrigerant charging in the field.

The condenser is factory-charged with next-generation R-454B refrigerant, an environmentally responsible option that delivers excellent heat transfer with a lower global warming potential. This supports current and future efficiency standards while simplifying installation and reducing labor and handling risks.

Built for quiet performance, the system operates at approximately 70 decibels, with a sound-dampening top that minimizes noise without restricting airflow—ideal for homes with patios, outdoor living areas, or nearby neighbors. Durability is reinforced with a steel louver coil guard and wire fan discharge grille to protect against debris and harsh weather. A service-friendly design with sweat-connection service valves and an accessible gauge port makes installation and maintenance faster and easier.

Backed by a 10-year limited parts warranty and a limited lifetime compressor warranty, the MRCOOL® TruInverter™ 48K offers dependable performance, long-term reliability, and peace of mind—making it a smart, future-ready investment in whole-home comfort.

The MRCOOL® Signature Series TruInverter™ 48K BTU 230V Multi-Position Air Handler delivers powerful, energy-efficient comfort for homes.

Built with TruInverter™ variable-speed technology, it continuously adjusts output to match real-time demand, providing smooth, consistent temperatures while reducing energy use, system wear, and operating noise. Using next-generation R-454B refrigerant, the system offers excellent heat transfer with a much lower environmental impact, helping meet modern efficiency standards while lowering long-term operating costs.

The air handler supports upflow, downflow, and horizontal installation, allowing it to fit easily in attics, closets, crawl spaces, or mechanical rooms. Its compact cabinet delivers strong airflow without the bulk of traditional systems. When paired with a compatible TruInverter™ Heat Pump Condenser, it provides reliable heating and cooling in every season.

Installation is faster and cleaner thanks to MRCOOL® No-Vac® Quick Connect® line sets, which arrive factory-charged with R-454B refrigerant, eliminating the need for vacuum pumps or refrigerant handling. For control, the system works with most third-party smart thermostats, letting you choose your preferred app-based or voice-controlled platform. Optional TruInverter™ electric heat kits add supplemental or emergency heat for cold climates.

Backed by a limited lifetime compressor warranty and a 10-year parts warranty, the TruInverter™ 48K delivers efficient, flexible, and dependable whole-home comfort.

The MRCOOL XK-120D2 is a professional wired controller specifically designed for the Signature Series TruInverter™ systems. This white, wall-mounted thermostat features a clear LCD display and provides comprehensive command over your HVAC system, including advanced scheduling and precise temperature monitoring. It includes a battery backup to ensure your time and schedule settings remain saved even during a power failure

Features

• Operating Modes: Supports a full range of settings including Auto, Cool, Dry, Fan, Heat, and Emergency Heat.
• Precision Fan Control: Features eight distinct fan speed settings: Mute, Low, Med-Low, Med, Med-High, High, Turbo, and Auto.
• Intelligent Monitoring: Includes a real-time Room Temperature Display and an Error Code Display for simplified troubleshooting.
• Energy Efficiency: Built-in "ECO" function to activate or deactivate energy conservation modes easily.
• User Protection: Features a Child Lock function to prevent accidental setting changes.
• Smart Memory: Power-down memory ensures the system retains its configuration through electrical interruptions.
• Flexible Interface: Offers both 12-hour and 24-hour clock systems and the ability to switch between Fahrenheit and Celsius displays.
• Maintenance Alerts: Built-in "Change Filter" reminder to help maintain optimal indoor air quality.