Assessing HVAC System Cleanliness Part 1of2 The Inspection Process The inspection process begins when an assessor makes contact with the client or their designated representative and reviews the building’s drawings, history and HVAC system documentation. A walk-through is conducted so that the inspector can become familiar with the physical layout of the building and its HVAC system. After discussing the purpose and scope of the inspection with the client or their representative, the inspector drafts a written plan that will be reviewed and approved before a detailed inspection is performed. The actual HVAC inspection includes all equipment associated with air handling units (AHUs), as well as supply air ducts, return air ducts, outdoor intake make-up ducts and air exhaust systems that are within the inspection scope outlined by the inspector and client. The inspector looks for dirt, debris and suspected microbial growth and makes observations Checking drop in cfm due to dirty filter Introduction The lifespan, efficiency and cost-effectiveness of any HVAC system hinge on its state of cleanliness and regular and effective maintenance. HVAC inspectors can objectively determine whether a system is contaminated with a significant accumulation of particulate matter, or if HVAC performance is compromised due to contamination buildup. The inspection process begins when a facility manager, building owner, or another industry related professional (referred to as the ‘client’) contacts an HVAC service provider. Visual inspection of HVAC system components is the first step for the assessment, cleaning, and restoration of HVAC systems. The role of the HVAC assessor is to assess the cleanliness of the HVAC system, which is defined by the presence of dirt, obstructions, excess moisture and microbial contamination that might affect system performance or occupant health and comfort. The inspection involves visual examination of critical HVAC system components using cameras and scopes, where necessary. The inspector (if qualified) also reports observations regarding potential operational malfunctions or other maintenance needs that are observed during the course of the inspection.
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