The Blueridge BXS4Z-VK Two-Way Ventilation System is made for Blueridge XS4 Series wall mount air handlers, adding fresh-air ventilation to your mini split system. It brings in outdoor air and helps remove stale indoor air, while a built-in healthy filter helps clean the incoming air before it enters the room. Its total heat exchange design helps reduce the impact on heating and cooling performance, so you can enjoy fresher indoor air without sacrificing comfort.

Fresh Air Kit for Blueridge XS4Z Ultra Heat Mini-Splits

• Two-way ventilation — simultaneously draws in filtered outdoor air while expelling stale indoor air.
• Total heat exchange (enthalpy) core — transfers both temperature and humidity between the outgoing and incoming air streams, so fresh air enters pre-conditioned and your system doesn't take the full efficiency hit of raw outdoor air.
• Built-in healthy filter — traps particulates from incoming outdoor air before it reaches the room; rated for replacement roughly every 3 months under typical conditions.
• Purpose-built for XS4Z wall-mount handlers — designed as a matched add-on, not a universal retrofit kit, so installation and airflow are engineered specifically for this handler line.
• Quiet operation — rated at 42 dB(A) max, so ventilation runs without adding noticeable noise to the room.
• Compact wall-mounted footprint — mounts alongside the indoor unit; requires a single 110mm (or two 60mm) wall penetration for ducting.