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Efficiency Of Pipework And Boiler...is This The Right Forum?
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<blockquote data-quote="brummydave" data-source="post: 371386" data-attributes="member: 18490"><p>Not sure if an electrician's forum is the right place to find info but as many of you have amazing knowledge I thought I'd ask!</p><p></p><p>My central heating is unconventional to say the least and I'm trying to find out which would be the most efficient way to improve it. And then the best value for money...</p><p></p><p>Currently a 13 year old Gloworm combi boiler is in the kitchen by an external wall, 6m away from the utility room where the 3 motorized valves, underfloor heating manifold, unvented tank, expansion vessel and wiring centre are. It has 22mm flow and return and gas pipes from the utility. It supplies hot water directly to the kitchen sink only which is adjacent.</p><p></p><p>(If anybody wants to know why we've that arrangement, that's another two paragraphs!)</p><p></p><p>Option one is replace the boiler with a condensing combi in the same location.</p><p></p><p>Option two, replace with a system boiler and run a new 7m pipe for kitchen sink hot water from the utility.</p><p></p><p>Option three, locate new boiler in utility with extended 6m flue to either front or rear of house, adding new hot water pipe for kitchen sink as well (or reusing c/h pipe).</p><p></p><p>Efficiency wise,</p><p></p><p>is it true that shorter runs from the boiler to the tank and valves is better?</p><p></p><p>A new boiler will be ninety something % efficient which is better than ours (81% at new)</p><p></p><p>Cost wise</p><p></p><p>Modern boilers can cope with long flue runs but not sure of cost of 6m flue!</p><p></p><p>Moving boiler location will mean a small amount of pipe jiggery pokery, and several metres of pipe no longer needed.</p><p></p><p>Running a new hot water pipe to kitchen is a relatively minor cost.</p><p></p><p>We may be eligible for the boiler cost under ECO/Affordable warmth, but doubtful any new pipework.</p><p></p><p>Our boiler is Category D and our house has an EPC of B.</p><p></p><p>Any tips, advice, or places to go looking for them is much appreciated!</p></blockquote><p></p>
[QUOTE="brummydave, post: 371386, member: 18490"] Not sure if an electrician's forum is the right place to find info but as many of you have amazing knowledge I thought I'd ask! My central heating is unconventional to say the least and I'm trying to find out which would be the most efficient way to improve it. And then the best value for money... Currently a 13 year old Gloworm combi boiler is in the kitchen by an external wall, 6m away from the utility room where the 3 motorized valves, underfloor heating manifold, unvented tank, expansion vessel and wiring centre are. It has 22mm flow and return and gas pipes from the utility. It supplies hot water directly to the kitchen sink only which is adjacent. (If anybody wants to know why we've that arrangement, that's another two paragraphs!) Option one is replace the boiler with a condensing combi in the same location. Option two, replace with a system boiler and run a new 7m pipe for kitchen sink hot water from the utility. Option three, locate new boiler in utility with extended 6m flue to either front or rear of house, adding new hot water pipe for kitchen sink as well (or reusing c/h pipe). Efficiency wise, is it true that shorter runs from the boiler to the tank and valves is better? A new boiler will be ninety something % efficient which is better than ours (81% at new) Cost wise Modern boilers can cope with long flue runs but not sure of cost of 6m flue! Moving boiler location will mean a small amount of pipe jiggery pokery, and several metres of pipe no longer needed. Running a new hot water pipe to kitchen is a relatively minor cost. We may be eligible for the boiler cost under ECO/Affordable warmth, but doubtful any new pipework. Our boiler is Category D and our house has an EPC of B. Any tips, advice, or places to go looking for them is much appreciated! [/QUOTE]
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