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unvented cylinder and immersion divert
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<blockquote data-quote="ProDave" data-source="post: 546755" data-attributes="member: 6969"><p>I think the big problem with boiler to ASHP swaps in poorly insulated houses is doing half a job. If you expect an ASHP to deliver hot water at 70 degrees to heat your radiators to scalding hot like the boiler used to just to get enough heat into the house, you will be very disappointed and the ASHP will run at a very poor COP if it will even reach the temperature needed.</p><p></p><p>On the other hand if you do it properly and install under floor heating, or all new over sized radiators that will deliver the heat the house needs at a very much lower water temperature you will get good results from an ASHP.</p></blockquote><p></p>
[QUOTE="ProDave, post: 546755, member: 6969"] I think the big problem with boiler to ASHP swaps in poorly insulated houses is doing half a job. If you expect an ASHP to deliver hot water at 70 degrees to heat your radiators to scalding hot like the boiler used to just to get enough heat into the house, you will be very disappointed and the ASHP will run at a very poor COP if it will even reach the temperature needed. On the other hand if you do it properly and install under floor heating, or all new over sized radiators that will deliver the heat the house needs at a very much lower water temperature you will get good results from an ASHP. [/QUOTE]
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unvented cylinder and immersion divert
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