This tender invites qualified contractors to undertake the repair and maintenance of HVAC works at Jinnah International Airport Karachi, specifically focusing on the rehabilitation of HVAC infrastructure at the new transmitting and radar stations. The project involves detailed electrical wiring, installation of circuit breakers, distribution boards, bus bars, and CPVC piping for drainage, along with removal and replacement of deteriorated foam insulation on refrigerant copper pipe lines of various diameters. The site is located within a high-security airport environment, requiring strict adherence to safety and operational protocols. The scope demands skilled workmanship in electrical and mechanical HVAC systems, including copper conductor wiring, MCCB installations, and insulation works with precise fitting and sealing. Contractors must be prepared to work in a complex airport setting, coordinating with the Pakistan Airports Authority's HVAC section and complying with all technical specifications and safety standards. The work requires careful handling of materials and equipment to avoid disruption to airport operations. Bidders must hold a valid Pakistan Engineering Council license in category C-6 or above with specialization ME-01, and be active taxpayers with NTN and ATL status. Compliance with FBR regulations and submission of bid security in the prescribed form is mandatory. The contract duration is 210 days from the date of commencement, with a 12-month maintenance period post-completion. Contractors should ensure all documentation, including technical bids, financial bids, and supporting certificates, are complete and submitted as per instructions. The submission deadline is set for 15 May 2023, with electronic bids to be submitted via the PPRA EPADS portal and original bid securities delivered physically before bid opening. Bids will be opened publicly 30 minutes after closing time. The physical address for submission and inquiries is the Office of Sr. Joint Director (HVAC), Room # 3076, Jinnah International Airport, Karachi. Pro-Tip: Ensure the original bid security instrument is submitted in a sealed envelope before the bid opening date and time, as failure to do so will result in outright rejection. Also, carefully review the technical specifications and ensure all pages of the bidding documents are signed and stamped by the authorized representative to avoid disqualification.