Comment by WatchdogReset

My two cents, I just tried to show this free course on my site, because heat pumps are an interesting topic. There is also others courses like this : https://hvac-learning.com/courses/air-handling-units-technol...

Heat pump as every heating or cooling devices, have pro and cons. This is where HVAC knowledge is nice to have, in order to have the best solutions. For example, the maintenance / obsolescence are an under estimated point when it comes to environment and savings