This tender invites qualified contractors in Karachi to undertake the rehabilitation of HVAC condensate-drainage infrastructure at various locations within the headquarters of Pakistan Airports Authority. The scope includes dismantling and removal of damaged condensate drain pipelines and installation of new CPVC piping systems with proper slope and supports to ensure efficient drainage. The work covers multiple office branches and service areas at Jinnah International Airport, requiring careful coordination to maintain operational continuity. The project demands skilled workmanship and adherence to OEM installation standards, including trench cutting, pipe laying, and restoration of affected surfaces. Contractors must be licensed by the Pakistan Engineering Council with a minimum C-6 financial category and specialization in mechanical engineering (ME-01). The site conditions at JIAP require attention to safety, minimal disruption, and compliance with airport operational protocols. Bidders should ensure their PEC registration is valid and maintain Active Taxpayer List (ATL) status for the fiscal year 2025-26. Bid security of PKR 50,000 is mandatory, and all bids must be submitted electronically via the EPADS portal with the original bid security instrument physically delivered before bid opening. The tender follows the Public Procurement Rules 2004 and e-Pak Procurement Regulations 2023. The submission deadline is set for 8th June 2024, with electronic bid opening 30 minutes after closing. Physical submission of bids is recommended but not mandatory. Bids must be complete with signed documents and accompanied by all required certifications. The office of the Sr. Joint Director (HVAC), Room # 3076, JIAP Karachi, is the contact point for bid security submission and clarifications. Pro-Tip: Ensure the original bid security instrument is submitted in a sealed envelope before the bid opening date to avoid outright rejection. Also, verify that all pages of the bidding documents are signed and stamped by the authorized representative to meet technical responsiveness criteria.