I have bought some B&Q trv's for a couple of the upstairs rads, only about £4-5 each. Are these any good? Have seen some other on the web by Drayton or Honeywell for between £10-15 each. B&Q ones are reversible so can be fitted on either flow/return.
What are the drawbacks of "cheaper" TRV's.
What are the drawbacks of "cheaper" TRV's.