Home diagnostics
Thermal camera for home inspection
A room-by-room method for windows, doors, insulation gaps and HVAC registers.
Short answer
A thermal camera maps surface temperature; it does not see inside a wall. Cold streaks may indicate missing insulation, air leakage, thermal bridging or moisture-driven cooling, so context and confirmation matter.
A practical workflow
- Work when indoor and outdoor temperatures differ by at least 18°F (10°C) where possible.
- Scan exterior walls, windows, doors, ceilings and HVAC registers from a consistent distance.
- Capture both a wide reference image and a close image of each anomaly.
Common mistakes
- Scanning sun-heated walls
- Treating every cold patch as moisture
- Comparing surfaces with different emissivity
Choosing a camera for this job
Start with native IR resolution, thermal sensitivity, field of view and focus. Close electronics work often needs macro or manual focus; broad building scans benefit from a useful field of view and enough native pixels to resolve an anomaly from a safe distance. Compatibility and reporting workflow matter as much as the headline detector specification.
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Reviewed August 2026 · Educational information, not a substitute for qualified electrical, mechanical or structural advice.