Yes, I'm not fussed about the guarantee actually as it's a second hand heater outside of guarantee. It's just that I'm trying to understand the rationale for insisting they are to be permanently wired in. I can't see any difference that would affect the operation or performance of the heater. The only thing I would consider myself is what other appliances are likely to be plugged in to the double socket but it's irrelevant to the heater anyway

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