Stiebel Eltron centralised heat recovery ventilation (HRV) system components. Heat recovery levels of up to 94% can be achieved through an optimised cross-flow heat exchanger. Centralised HRV systems are designed for ventilating air tight homes including apartments, houses and small commercial properties. They help to control mould, make your home feel fresh and airy with windows shut, and reduce your heating and cooling loads. These systems are ideal for people with sensitivity to dust and allergies. Note that prices are continually reviewed and may change prior to the new listing. Prices listed below include GST ex Melbourne warehouse. Contact us for advice, pickup or delivery arrangements that may require added freight cost.