Why choose MVHR with heat recovery?

A continuous dual-flow MVHR system with heat recovery helps reduce energy waste and improve comfort throughout the year. The heat exchanger preheats incoming air in winter and helps cool it in summer by using the properties of the outgoing air to transfer both sensible heat – temperature – and latent heat – humidity.

Choosing a continuous dual-flow Mechanical Ventilation with Heat Recovery system means investing in both indoor comfort and energy efficiency. This type of system extracts stale air from indoor spaces while simultaneously supplying fresh, filtered air from outside. The core of the technology is the heat exchanger which, in Helty MVHR systems, is enthalpy-based and can recover up to 91% of the heat from the outgoing air to warm the incoming air – or help cool it when used in combination with an air-conditioning system.

In addition to thermal efficiency, Helty MVHR ensures constantly purified air thanks to advanced filters that capture particulates, pollen and other pollutants, helping improve indoor air quality. This is particularly important in modern homes, which are increasingly airtight and therefore more prone to the accumulation of humidity, CO₂ and VOCs. This continuous and automatic flushing of indoor air minimises the need for manual ventilation by opening windows, thereby contributing to the building’s overall energy efficiency.

Continuous air renewal also helps prevent mould and condensation, keeping indoor spaces healthy.