Recovering energy from buildings with clean exhaust air (domestic houses, office buildings and commercial building) has been obvious around the world since the 1960s, when the traditional heat exchangers were invented.  But, in Sweden where the winter lasts five months, a kWh costs €0,2 and energy recovery is mandated by the government, recovering energy from only clean exhaust air is not enough.

Energy is also recovered in buildings with polluted exhaust air (restaurants, commercial kitchens, laundries and industry buildings) where grease, soot or particles make it impossible to use traditional equipment.

'How has this been made possible', you ask?

Well, by using the innovative, patented product 'Lepido' by Enjay Systems, a heavy duty heat exchanger developed specially for challenging environments. Lepido makes it both possible and profitable to recover energy from hot polluted exhaust air from the kitchen. By using this recycled energy to heat the cold supply air, a restaurant can halve its heating costs and drastically reduce its fossil CO₂ emissions.

With booming energy costs around Europe and an ongoing race to “net-zero”, it´s time for a global wake up call. More countries need to start using the Swedish way to recover energy. Because wasting energy is no longer an option.

If you'd like to calculate your possible energy and money savings, you can do it here.