Y.H.Associates (YHA) is a professional services consulting firm specializing in the design of air conditioning, refrigeration, heating, ventilation, plumbing, fire protection, mechanical and electrical engineering systems.

YHA is a private firm, owned and operated by Mr. Yousuf Hasan, having Principal office in Karachi, Pakistan, since 1994. We have enjoyed the projects across the country and abroad namely in Karachi, Lahore, Islamabad, Dadu, Kotri, Sahiwal, Jehlum, Akora Khatak, Faisalabad, Kyrgystan, Tashkent, Turkmenistan and Bangladesh.