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Furnace filters protect HVAC components from dust and debris while improving indoor air quality. Missing filters allow contaminants to accumulate on coils, blowers, and ducts, reducing efficiency and causing premature failure. NHIE Domain 1 requires inspectors to identify missing or inadequate system components that compromise performance and safety. Reporting this defect ensures clients understand the need for immediate correction.

Reports must convey defects clearly so clients and contractors can act appropriately. NHIE Domain 2 highlights the need for precise, factual descriptions. For example, “active water stain on ceiling” is clearer than “possible water issue.” Vague terms create confusion, while overly technical jargon may confuse clients. Precision strikes a balance by being accurate, clear, and actionable. This reduces misinterpretation, ensures proper repairs, and protects the inspector from liability claims.

Photos without captions can confuse clients and contractors. NHIE Domain 2 emphasizes clarity and documentation. Labeling photos (e.g., “water stain on living room ceiling”) ensures readers understand what the image depicts and its location. This strengthens report defensibility and usability.

Sediment traps are required to prevent debris, dirt, or condensate from entering the gas valve or burners. Without it, particles can clog the system, leading to inefficient combustion, equipment damage, and potential safety issues. NHIE Domain 1 emphasizes identifying missing safety components in fuel systems. Reporting the absence of a drip leg ensures the client understands the potential hazard and need for correction by a licensed contractor.

Clients may request proof of insurance before or after hiring an inspector. NHIE Domain 3 emphasizes professionalism and transparency. Providing proof of coverage demonstrates accountability and builds client trust. This does not mean sharing the full policy details, but a certificate of coverage is appropriate.