It works i used product in bathtub where water was running out slow water is flowing freely again! If you feel you need to report an issue, please use this form. Ernesto was great he happened to be right around the corner on a saturday night he came over in mins and had our ac fixed within an hour. We have a model and output of boiler for every home. Is your boiler losing pressure? Put simply it all depends on the size and scale of the project on the majority of occasions we can have your boiler.