We are satisfied and honored that European level industries event this year was held in Riga. We provided contribute and support to REHVA (European heat, ventilation and air conditioning technology association federations) and LSGŪTIS (Latvian Heat, Gas and Water Technology Engineers' Association) organized conferences and the annual meeting, that took place in 2015, 6 to 9 May in Riga. The event brought together European level experts - REHVA Association members, industry experts, engineers and specialists.