Kermi 425 Boost Heat Recovery Unit (WiFi gateway, RF switch, siphon) Ventilation unit with heat recovery 425 Y110442501101K

Heat recovery ventilation unit Kermi 425 Boost – intelligent ventilation for your home

The Kermi 425 Boost recuperator is an advanced solution providing optimal air quality in your home while reducing heating costs. The unit recovers up to 90% of the heat from exhaust air, delivering fresh, heated air to the rooms. This allows you to enjoy a comfortable indoor climate and save energy, regardless of the season. This is not only a device for demanding installers, but also for users who appreciate convenience and modern technologies.

Performance and user comfort

The Kermi 425 Boost unit offers a maximum performance of 425 m³/h at a pressure of 150 Pa. High heat recovery efficiency translates into real savings in heating costs, and the ISO ePM1 55% filter ensures clean air free from pollutants. The built-in summer bypass allows complete deactivation of heat recovery on warmer days, providing cooling comfort. The construction using expanded polypropylene (EPP) dampens vibrations and noise, guaranteeing quiet operation of the device. Internal connections located both at the top and bottom provide great flexibility during installation.

Intelligent control and remote access

The Kermi 425 Boost recuperator is equipped with a Wi-Fi gateway and a wireless RF switch, allowing full control over the ventilation system. Thanks to the "Vasco Climate Control" mobile application (available on Android and iOS), you can control the device from anywhere in the world. The application offers:

• Weekly programmer with 5 ventilation intensity levels
• Possibility of current gear change
• "Fireplace" function – temporary increase of air flow
• Preview of current temperatures and status of the bypass, pre-heater and anti-freeze protection
• Possibility of manual opening of the bypass
• Modification of recuperator settings

Additionally, the wireless RF switch allows you to select 3 ventilation intensity levels and activate the timed ventilation function. The LED indicates correct operation of the device, signals errors and reminds you to replace the filters. The ability to expand the system with CO₂ and humidity sensors allows automatic adjustment of ventilation intensity based on actual needs.

Solid construction and warranty

The recuperator housing is made of powder-coated steel, which ensures durability and corrosion resistance. The entire internal structure is made of EPP – a material characterized by high strength, thermal insulation and the ability to dampen vibrations and noise. The Kermi 425 Boost recuperator was designed and manufactured in Belgium, which guarantees high quality workmanship and reliable operation. A 5-year warranty applies to the entire Kermi system (after installation by an Authorized Installer).