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[21 Sep 2012 | 1,111 read]
“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 recovery and energy saving ventilation systems follow the increasing slope of energy prices.