Having had a cold winter and paying a fortune for gas I`m considering upgrading heating, my questions are, roughly how old is this kit, boiler and radiators, AND if I upgrade will I see a significant performance increase?, ie; will I be warmer and will warmth per £ be reduced by what % ?, I know the question is dependent on many variables unique to my circumstance but opinions welcome, esp from people with experience. Thanks.
boiler
radiator
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boiler
radiator
radiator