It works i used product in bathtub where water was running out slow water is flowing freely again! Boiler installation, repairs and servicing. Would need to know more, but if you read through this article, it sounds like it might uncover the problem! Solv promise to provide value for money, do the right job, at the right price, at the right time to suit our customers. All boilers come with a one-year warranty looking for even more headache-free years?.