My word I am absolutely flabbergasted at how brilliant and super quick RW are! I called with an error code on my Vaillant boiler as I was worried my boiler may be leaking gas and it had just shut down completely, no heating or hot water. RW came out in less than a hour, which is fantastic!! The problem was sorted and the engineer shared very helpful tips and advice. Any problems in the future with my boiler, I will most definitely be calling RW! Reliable, helpful, knowledgeable and friendly ??????????