This tender invites bids for the procurement of critical parts for Chiller No 4 located at Jinnah International Airport Karachi under the Pakistan Airports Authority (PAA). The procurement falls under the Electronics & Appliances category and is aimed at ensuring the efficient operation and maintenance of the chiller system at this key airport facility in Karachi, Sindh. The scope includes supply of specific components such as flow sensors, electric actuators, and level sensors for the York brand chiller model YKPKPKK25DAHS. These parts are essential for the chiller's optimal performance and reliability. Bidders must ensure that the items conform to the technical specifications provided, including OEM product data sheets. The delivery period is set at 90 days from the signing of the contract, and the procurement method follows the PPRA Rule 36(b) single stage two envelop procedure. Bidders should be registered with valid NTN and GST certificates and must appear on the Active Taxpayer List (ATL) of FBR. Compliance with PEC categories is advised, and bidders should ensure their bid security and performance bond meet the stipulated requirements. The bid security amount is PKR 90,000, and a performance bond of 5% of the total contract value is mandatory. The bid validity period is 180 days from the technical bid opening date. Submission deadline is on the 23rd of February 2026, with bid opening scheduled at 11:30 AM via the EPADS online portal. Original bid security in hard copy must reach the specified office address before the closing time. The physical address for submission and queries is the OIC Logistics, Level-6, Main Terminal Building, Jinnah International Airport Karachi. Pro-Tip: Ensure the original bid security reaches the office well before the closing date and time, as failure to submit the original bid security in hard copy will lead to outright rejection. Also, carefully review the bidding documents and attach all required technical literature and forms to avoid disqualification.