This tender invites experienced contractors in HVAC works to provide and fix PVC fills for the cooling towers at the Central Library of International Islamic University Islamabad, Sector H-10 Campus. The project involves specialized HVAC system maintenance requiring contractors registered under PEC Category C-6 with specialization code ME-01. The work demands quality materials and skilled workmanship to ensure efficient cooling tower operation in Islamabad's climate. The scope includes removal of old fills and installation of new PVC fills designed to optimize cooling tower performance. Contractors must consider site conditions at the university campus and ensure compliance with technical specifications outlined in the tender documents available on PPRA EPADS portal. The engineering challenge lies in maintaining uninterrupted HVAC functionality during installation. Bidders must hold valid PEC registration under the specified category and specialization, be on the Active Taxpayers List (ATL), and provide an undertaking confirming no blacklisting or litigation. Tender Fee of PKR 5000 and Earnest Money of 2% of the bid value must be submitted via Call Deposit Receipt (CDR) in favor of the university. Compliance with FBR and PEC requirements for the financial year 2025-26 is mandatory to avoid disqualification. The submission deadline is set for 22 January 2026 at 10:30 AM, with bid opening at 11:00 AM on the same day in Office #121, Admin Block, IIU Sector H-10 Campus, Islamabad. Bidders must submit their bids online via PPRA EPADS and also provide original CDRs and hard copies of bids along with all required documents. Pro-Tip: Carefully review the tender advertisement for specific stamp duty and Earnest Money submission instructions, as missing these details often leads to bid rejection. Ensure all PEC and tax documentation is current and properly attached to avoid technical disqualification.