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“Energy efficiency in ventilation, air conditioning and heating systems” – an interview with Eng. July Armianov (interview for newspaper “Stroitelstvo Gradat”)

The rumors for energy efficiency in the systems for ventilation, heating and air conditioning started after the energy crises from 1973. Since that time, the interest in heat recov...

Energy saving ventilation systems (Mechanical Heat Recovery Ventilation) guarantee repayment between 1.5 and 2 years.

Dipl. Eng. Armianov, what are the tendencies in Europe and all over the world in development of energy efficient ventilation systems, mechanical heat recovery ventilation?