We have purchased a condo a couple of years ago. We had it inspected by a pre-purchase-home-inspetor company as it is the common thing done around here.
We live near Montreal in Canada, where it can get cold during the winter (-30°C), so the inspection included a thermal reading (thermal imaging) of the home to spot where heat could be lost. The inspection was done during the month of May, while the temperature outside was quite comfortable (15°C). So of course, it did not spot anything outstanding.
The following winter, we got faced with frozen pipes issues (no leakage, thank you!), and well, general "Geez, it's cold in here" while getting up in the morning.
I'm aware of a couple of places where we blatantly lose heat (stove hood, fireplace chimney, window cracks), and I feel we lose more heat from this kind of spot than a badly insulated wall.
I'm clueless about what I should Google to find a company that would help me find all of these issues. I can find a bunch of thermal imaging inspectors, but I don't feel that they will be of any help (the winter temperature is already fading way).
What are companies who specialize in that called?