4 Ton 17.5 SEER2 High Efficiency Central Heat Pump System Extreme+ Series | Inverter

ACiQ’s Extreme+ heat pump systems set a new standard in home comfort—delivering high-performance, self-adjusting climate control through a mini-split-style inverter condenser paired with a fully communicating air handler. Designed for seamless integration with your existing ductwork, installation is simple, and the results are extraordinary.

The ACiQ-48-HPD 4 Ton Extreme Series Heat Pump features advanced inverter technology that converts AC power to DC, allowing the compressor to automatically modulate its speed. This self-adjusting system tailors BTU output in real time based on current demand, ensuring maximum efficiency and consistent indoor comfort as weather conditions change.

This system goes beyond basic functionality. With built-in sensors that track indoor/outdoor temperature, duct pressure, and refrigerant levels, the condenser enters a “learning mode” during its initial operation. It gathers performance data to continuously optimize efficiency and fine-tune system output for long-term energy savings.

Unlike traditional heat pumps, which can overcool your home when sized for winter heating, the ACiQ-48-HPD adapts to your specific needs. Thanks to its intelligent inverter design, it scales down performance during warmer months to function like a smaller unit—eliminating excess humidity while still providing powerful cooling.

Engineered for the harshest winters, ACiQ’s Extreme Heat Technology ensures reliable heating all the way down to -22°F. While conventional systems depend on costly electric backup heat below 30°F, the ACiQ-48-HPD adjusts refrigerant flow to extract maximum heat—even in extreme cold. It maintains 100% heating capacity at 0°F and delivers 80% at -22°F, slashing cold-weather heating bills by up to 75%. Backup electric heat only activates below -22°F, preserving efficiency whenever possible.

The ACiQ-48-PAH is one of the most advanced ducted air handlers available, designed to deliver exceptional performance in any installation. With a variable-speed DC blower and communicating controls, this air handler works in sync with your thermostat and inverter condenser to dynamically adjust BTU output—maximizing comfort and minimizing energy use. Its slim design and multi-positional flexibility (upflow, downflow, or horizontal) make it a perfect fit for a wide range of spaces and system setups.

4 Ton 17.5 SEER2 Extreme Heat Pump System Specs

4 Ton 17.5 SEER2 Extreme Heat Pump System Features

Installing the ACiQ Extreme+ central ducted air handler is straightforward and similar to replacing a standard air handler. Your technician will handle electrical, refrigerant, thermostat, and communication connections, along with tying the unit into your existing return and supply ductwork. Designed with a slim cabinet and multi-position capability (upflow, downflow, or horizontal), this air handler is both space-efficient and highly versatile. It works with any 24V thermostat that supports two stages of heating.

Optional electric heat kits are available for additional heating support on the coldest days. For added convenience, the built-in intelligent control board displays fault codes to help diagnose any system issues quickly during maintenance.

This air handler must be installed alongside a compatible condenser and other system components, which are sold separately if not already included in your product bundle. If you plan to use straight electric heating, a compatible electric heat kit is required and available at an additional cost.

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