Rates to change for appliance (7)
I believe the answer is:
toaster
'for appliance' is the definition.
(toaster is a kind of appliance)
'rates to change' is the wordplay.
'change' is an anagram indicator.
'rates'+'to'='ratesto'
'ratesto' with letters rearranged gives 'TOASTER'.
(Other definitions for toaster that I've seen before include "Machine for making brown bread?" , "Bread griller" , "wedding present?" , "Health-promoting" , "one that suggests health" .)