ACG CxT Exam 2025 | 100+ Questions | HVAC Terms, Commissioning Phases, FPT, TAB

This document provides a complete and updated set of over 100 exam-focused questions and answers tailored for the ACG Certified Commissioning Technician (CxT) Exam for the academic year 2025/2026. The content is structured around key definitions, acronyms, concepts, and commissioning processes as defined by the AABC Commissioning Group (ACG) standards. The material includes detailed explanations of technical abbreviations such as EBCx, FPT, TAB, BAS, and many others commonly used in the HVAC commissioning industry. It also covers the full cycle of Comprehensive HVAC Commissioning, including the Pre-Design, Design, Construction, Acceptance, and Post-Acceptance phases. Concepts such as functional performance testing (FPT), retro-commissioning, re-commissioning, energy conservation measures (ECM), preventive maintenance (PM), and construction models (Plan & Spec, Design-Build) are clearly defined and supported with sample questions and answers. This resource is ideal for: HVAC and mechanical engineering students Construction management or building systems students Technicians preparing for ACG CxT certification Entry-level professionals in facility operations, testing & balancing (TAB), or commissioning teams Candidates pursuing LEED projects or energy efficiency initiatives in building design The document is designed to simplify terminology, clarify commissioning procedures, and help learners confidently prepare for the CxT certification with concise, exam-relevant material. Keywords: CxT exam, HVAC commissioning, building automation, functional performance test, commissioning phases, retro-commissioning, re-commissioning, TAB, FPT, DDC systems, O&M, BAS, ECM, LEED, construction models