Amongst the many other things I'm dubious about, one is that I can't help wondering if a 20% saving on heating bills is going to be sufficiently attractive to the discerning customer
Carpet factories in Georgia use a lot of process heat and steam. The people at Hydrodynamics sell them heating equipment. (https://www.hydrodynamics.com/) I have been to visit them many times, and I talked to carpet factory managers and engineers. They would hardly notice a 20% savings, and they wouldn't care about it. They are more concerned about other things such as: reliability, safety, capacity, dirty water clogging the boilers and pipes, equipment maintenance cost, and so on. They would go with a boiler that is 20% less efficient but does not clog up. They are also restricted by regulations and by common sense. For example, an open flame might cause an explosion, so they have to use electric heaters, even though gas is about 3 times more energy efficient and cheaper.