The hoses are usually just standard ones to the Tigerloops. So, whatever the life is of the hoses, you need to change them. Some are long life hoses. As you probably know, if a tiny hole is in the return hose, it will draw air in & stop the boiler.
You are supposed to fit a Tigerloop OUTSIDE a building/boiler house as it vents to the air, so risk of smell of oil & fire hazard, therefore you may need copper pipes from Tigerloop to inside of boiler casing & then to hoses. Tigerloop Bio (near identical to ordinary T'loop) is allowed inside as it has a vent pipe connection to pipe to outside.