This tender invites qualified contractors in Hyderabad from the Pakistan Airports Authority (PAA), ES E&M Sindh Division, CATI for HVAC works involving replacement of underperforming air conditioning units at the Medical Center, Masjid, and Madarasa within the CATI complex. The scope covers removal and installation of AC units ensuring improved cooling efficiency and reliability across these critical facilities. The project demands contractors registered with PEC in category C-6 or above, specializing in Mechanical (ME-01) and Electrical (EE-04) fields. The site is located in Hyderabad, Sindh, where contractors must consider local climate conditions and electrical infrastructure to ensure optimal performance and compliance with safety standards. The work involves technical challenges such as coordinating installations without disrupting hospital and religious activities. Bidders must hold valid NTN and Professional Tax certificates and comply with PEC registration requirements. The tender follows the Public Procurement Rules 2004 and e-Pak Procurement Regulations 2023, requiring earnest money of PKR 350,000 in the form of a pay order or bank draft favoring PAA DEVELOPMENT. Ensure your PEC category and FBR/ATL status are current for the 2025-26 financial year to avoid disqualification. Submission deadline is on the **22nd of January 2026** by 14:00 hours, with technical bids opened the same day at 14:00. Bids must be submitted electronically via the PPRA E-PADS portal, with the original earnest money instrument delivered physically at the Divisional Engineer ES E&M Office, CATI Hyderabad. Pro-Tip: Double-check the earnest money instrument for authenticity and ensure it is submitted both electronically and physically on time. Missing or fake instruments lead to outright rejection and possible blacklisting. Also, carefully review the PEC specialization codes ME-01 and EE-04 to confirm eligibility before bidding.