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energiSava® 400

High Efficiency Whole House Heat Recovery System

The energiSava® 400 is ideal for residential properties to provide a constant supply of clean, tempered air and maintain stable humidity levels.

With maximum airflow capacities of 400 m3/h respectively, they are available in left-handed and right-handed versions with a range of options for connecting the ducts. In addition to the comprehensive standard version, a ‘Plus version’ is also available which offers additional connection options, such as a CO2 sensor.

Key Features

  • EC Motor
    EC Motor

    Incorporates a powerful backward curved EC motor.

  • Summer By-Pass
    Summer By-Pass

    Benefiting from a temperature controlled integral summer by-pass as standard.

  • 2 Year Warranty
    2 Year Warranty

    High quality products for peace of mind, saving time, money and hassle.

  • Energy Efficient
    Energy Efficient

    Delivering up to 89% thermal efficiency.

  • Frost Protection
    Frost Protection

    An intelligent frost protection system prevents the heat exchange from freezing when cold outside.

  • Wireless

    Available with wireless remote control.



Providing all year round good indoor air quality is vital for a healthy and comfortable living environment. Regulations relating to energy efficiency and low noise levels are becoming increasingly stringent.

EnviroVent have responded with the introduction of the energiSava® 300 & 400 Series. These high efficient whole house heat recovery products have been designed not only with the optimum performance for today’s requirements but with forward-thinking innovation for future demands in ventilation.

Summer Bypass & Frost Protection

The energiSava® 300 comes with bypass and preheater as standard. The bypass contributes to an improved comfort level in summer and is controlled automatically by measuring indoor and outdoor temperatures. The intelligent frost protection with preheater guarantees the high efficiency, even at extremely low temperatures. This energy-efficient frost protection helps to achieve significant energy savings per year.

Constant Flow Control

The ‘constant flow’ technology ensures maximum efficiency and that the commissioned airflow rate is always delivered despite any resistance encountered in the ductwork or filters. The ‘constant flow control’ system also enables commissioning to be carried out much quicker and more easily, saving on installation costs.

Silent Running

Engineered with aerodynamic fans to run at lower rates enables noise to be reduced and minimalised, whilst lower internal resistance delivers exceptionally quiet running.

Control Options

The energiSava® 300 unit can be controlled with a 4-way switch with filter indication or a wireless remote control. Alternatively, using the intelligent control module with timer, or the relative humidity sensor.

Passive House Certified

The energiSava® 400 products are certified by the Passive Haus Institute and manufactured with the latest energy-saving technology.

The Passive House concept is the only internationally recognised, performance based energy standard in construction.

Ease of Maintenance

The units come as standard with two G3 filters that can be easily changed. These filters remove 95% of the dust from the air. A high-performance fine dust filter (F7 filter) is optionally available, ideal for people with respiratory conditions or allergies. The intelligent digital display panel located on the unit ensures the utmost ease of commissioning.

Product Codes
Product Code
Product Name
Product Description
energiSava 400
Standard unit with summer bypass, 4 way switch and frost protection
energiSava 400 Plus
Plus version with summer bypass, 4 way switch and frost protection
Product Specification
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