Stay in cold country is quite manageable if you could do proper planning. For example, to make the interior of the house warm you could either choose to live in a cottage made of wood as wood would not transmit the heat between inside and outside of the house. However, earning a decent salary would not let you do so, so the other alternative is to insulate the house you live in. How to insulate the house is not the technology that you should learn. You should just learn how quickly or how slowly is the interior getting heated or cooled down.
Well, depending on the stamina each person in the family has they may withstand the variations in temperature and hence you could not consider the inputs provided by your family members. When one say it is too cold, the other may be feeling comfortable enough to sit without covering their body with warm woollen clothes. So, it is the device that does tell the variations in temperature clearly. The Thermal Imaging Camera is the best device that could do this job of capturing that area in the house where one may experience the air to be cooler when compared to the rest of the places in the house.
It does mean that there is a leakage in the insulation in that corner of the room. This leakage could be cleared understood from the images that are captured by the camera. So, this would help you save the electricity that is consumed by the leakage of the insulation. Once the issue is identified fixing it would not take much time. If the environment is worse and even the insulation experts could do nothing on such leakages only the thermal camera could help in such situations.