L
lame plumber
There's a certain amount of heat generated from the oil pump on a tigerloop set up. That might not help the hose life. But I come across a lot of Riello hoses that are around 10 or more years old & seem to have lasted if not touched! Hoses from the electro oil burners are however a different breed & seem to last forever. As you said, usually some idiot twists them or damages them & you really need to replace.
I saw a tigerloop with Riello hoses that that had a leak on a hose & ruined a garden.
being that litigation and blame are part of our world now, and MIs state annual hose change, Ichange the standard flexis annually, and long life hoses every 2 or 3 years and any new boiler service cops hose, nozzle and filter change. keeps me in business and cant be blamed for leaky hose in the future. I see it as an income earner and the MFIs reccommend it, so I do after all we are there to earn a living not save every penny for the customer.