Establishment obviously needing a way to heat water (8)
I believe the answer is:
teahouse
'establishment obviously needing a way' is the definition.
I can't tell whether this defines the answer.
'heat water' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'heat' is 'teah' which is present in the answer.
The remaining letters 'ouse' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for teahouse that I've seen before include "''The ... of the August Moon'' (film with Marlon Brando)" , "Japanese cafe" , "restaurant in China" , "refreshments served here" , "Chinese restaurant" .)