While insulation may seem like an expense during the building phase, it is, in fact an excellent long-term investment. It is one of the few building materials that will actually help you save money once the building is fully operational. That being said, it can be hard to determine how much you will save and what you should insulate. These four calculators, outlined by NCMI, can help you establish exactly what you’ll save by insulating your systems. Click to read more.