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Using a thermal camera for underfloor heating
Map loop patterns, cold areas and warm-up behavior without over-interpreting the image.
Short answer
A thermal camera can often map the surface effect of active underfloor heating, especially during warm-up. Floor coverings, pipe depth and recent sunlight can hide or distort the pattern.
A practical workflow
- Start from a reasonably even floor temperature.
- Switch the system on and record the pattern as it develops.
- Compare zones and manifolds under the same conditions.
Common mistakes
- Scanning after the entire slab has equalized
- Assuming a faint area proves a blocked loop
- Ignoring rugs and furniture
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.