Cekap Air Sdn Bhd (565278-A) (CASB) is a company incorporated in Malaysia, in Year 2001. Based in Puchong, Selangor, it was set up to venture into the ever-increasing water, wastewater and related industries. Prior to the formation of Cekap Air, the company business is conducted under Thermex Engineering, which started business since early 1994, in providing mechanical installation, piping work, and maintenance services.

Since incorporation, Cekap Air is pursuing engineering construction based activity in different industries, with core activities derived from mechanical and electrical engineering installation works. Cekap Air is a C2 and C3 (Bekalan Air) registered Contractor with Suruhanjaya Perkhidmatan Air Negara (SPAN), and Grade G5 with the Construction Industry Development Board Malaysia (CIDB). Cekap Air is also a registered contractor with the Felda Holding and to the Ministries of Defence.