Try Paul Cringle at Auldyn Electrics....in the book, lives in Glen Auldyn. We've used him a few times. If you explain to him over the phone he will know if it's the appliance or more 'plumby' if you see what I mean!!!
Just saved money on my gas bill. Result
On a realated topic just pulled my bath waste to pieces pulling out a huge hairball.
Anyone know a good plumber.