Thermal cameras
How much detector resolution do you actually need?
One camera plugs into a phone and measures at 80 × 60 while displaying 1440 × 1080; the other is a standalone site instrument measuring at 256 × 192. Ten times the measured points, three times the price, and the ruggedness figures only one of them has.
| Compared on | FLIR ONE Gen 3, phone thermal camera | Thermal camera, 256 × 192, site-rated |
|---|---|---|
| Detector resolution | 80 × 60 (4,800 points) | 256 × 192 (49,152 points) |
| Displayed image resolution | 1440 × 1080 (upscaled) | Single figure quoted |
| Stated accuracy | ± 3 °C (37 °F) or ± 5%, conditions given | Not published |
| Temperature range | Not published in this listing | −20 °C (-4 °F) to +450 °C (842 °F) |
| Ingress rating | Not published | IP54 |
| Drop resistance | Not published | 2 m (7 ft), excluding battery |
| Power | From the phone | 12 V Li-ion or AA alkaline |
| Needs a phone | Yes, USB-C Android | No |
| Listed on amazon.com | Yes | No |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.
Buy the FLIR ONE for building-fabric work: cold bridges, missing insulation, an overheating connection. Four thousand eight hundred measured points finds all of those, it publishes its accuracy with its conditions, and it costs a third as much.
No amazon.com listing was found for this one. We hold references for other markets but none for the United States, so it may not be buyable here — which is the first thing to weigh against anything below.
Buy the Bosch if the camera is a working instrument. Ten times the detector, a real temperature range and the only ruggedness figures in the hub — and read the specification sheet for the accuracy the listing leaves out.
For the large, high-contrast features a house inspection looks for, yes. It will not resolve one small component among several in a crowded electrical panel.
Because both are true. The detector measures at 80 × 60; the displayed image combines that with a visual camera and scaling. Quoting both in the same sentence is more honest than most of the category.
80 × 60 detector · 1440 × 1080 image · ± 3 °C (37 °F) or ± 5% stated · USB-C Android
A phone-attached thermal camera whose listing states both numbers plainly: an 80 × 60 thermal detector behind a 1440 × 1080 displayed image, with accuracy given as ± 3 °C (37 °F) or ± 5%.
Best for: A first thermal camera for home inspection, where finding the cold spot matters more than resolving it finely.
≈ $214
256 × 192 px · −20 to +450 °C (842 °F) · IP54 · 2 m (7 ft) drop · dual power
A camera that quotes 256 × 192 with no upscaled figure beside it, in an IP54 body rated for a 2 m (7 ft) drop, running on a 12 V Li-ion pack or AA cells.
Best for: Site use, where the camera shares a bag with other tools and has to work on the first press.
