I just got a Heliocol pool solar system installed, and this morning, I just wanted to turn on the pump to make sure everything was still working. Everything *seemed* fine, until I went in the house and realized there was a loud humming noise that was never there before. The pipes are directly over my living room, but I was never warned that there would be any noise created by this system. I touched the pipes going up to my roof and could feel them vibrating, so I know water is going through them. Is this expected? God I hope not.