Yes 5 years is the recommended max lifespan and it starts from the date of manufacture marked on the hose.
Its absolute cobblers of course. I just renewed mine because I was fitting a new cooker. The old was 9 years old IIRC and in perfect condition.
In a dark, copwebbed and mouse infested corner of the garage I found the original bits now over 30 years old. Also in perfect condition.
10 years is the max recommended life for the regulator.
i have been round & round the Calor Gas site .
found 1 reference to Hose 5 yrs old
no mention of
1/ manufacture
2/ date fitted
you cant tell me a retailer will stock time dated hose i.e. best before date
When you get surveyed, the surveyor looks at the date on the hose and puts it in his report - doesn't ask you when you fitted it. If it wasn't the manufacture date that was significant then why put it on at all?
Presumably it is a recommendation to change, or are there groups (eg commercial) where it is compulsory?
Mind you, spending about £1-50 on hose, even if annual, it is not a significant cost compared with other items.
The Calor Site is pretty good imo. Stacks of useful info. Logically set out, easy to find things via the index. I went straight to the info on hoses anyway.
Didn't even notice the search facility.
I could not find it in the Booat safety Scheme either. Found the 10 year recommendation for the regulator there but nothing about the hose. I was sure it was there but it seems not.
Went back to the shop I bought it from whom seem genuine and helpful, they say the date stamped on the hose is the date the the manufacturer got the accreditation.
I had assumed it was date of manufacture does anyone know for sure?
Service Life
It has always been a requirement of the British standard that type 1 and type 2 hoses to BS 3212
should be marked with the date of manufacture, together with other informative markings. No
specific service life / exchange interval has ever been officially promulgated. When EN 1763 is
finally adopted as a British Standard and supersedes BS3212 both marking systems may be in
use.
We have no specific recommendation for the exchange interval for vapour hoses, but it is
considered that the normal useful service life of such hoses should not be beyond 5 years,
Also see my earlier quote from the Calormarine website