Lenker til foreninger og organisasjoner

Organisasjoner
Nordiske
VVS-foreningen
Scanvac
Internasjonale
ASHRAE, American society of heating, ventilating and air-conditioning engineers
EUROVENT, Eurovent Certification
ISIAQ, International Society of Indoor Air Quality and Climate
NIOSH, National Institute for Occupational Safety and Health
REHVA, Federation of Eurpean Heating and Air-Conditioning Assosiation