Thermal sensors - please suggest


I want to build a thermal camera, after looking at various posts seems the most popular choice is MLX90614ESF-BCI. However, this or the DCI version is not exactly cheap when you add the shipping cost.

Please suggest what other sensors with a small FOV are suitable (e.g. TPA81)?

Note : I want to use the thermal camera to scan for thermal leaks in walls, windows or other house insulations.

You've probably heard of the IR Blue project, a 4x16 camera.

There is also the cheaper Omron noncontact IR sensor in 4x4 or 1x8 configurations:$file/D6T_1112.pdf