Please send me a link on DYI to clean this coil. Is there a kit? Where can I get it? Is it a difficult process? Our hot water pressure has rapidly decreased over the past 6 months and we were told it is the residue build up on the coil to the fault of our water company however we cannot find anyone to clean it....our furnace is only 5 years old!!! I am not prepared to settle for the lack of pressure.

Thanks so much,