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Do-It-Yourself (DIY) Question & Answer Forum
Going over to Electric - Does a houshold supply need upgrading?
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<blockquote data-quote="johnb2713" data-source="post: 547032" data-attributes="member: 35153"><p>Heatpumps usually run between a COP of 2 and upto 4.5 dependent on outside air temp and flow temp. Gas boilers on the otherhand tend to run around 80 to 85% for a condensing boiler, much worse for a non condensing one. These figures need factoring in when considering heatpumps etc. So if gas is 10p kWh, correcting it for boiler efficiency would give you £12.5p per kWh of heat, a heatpump on a standard tariff say 30p would give you 10p per kWh of heat. If you have solar or battery then it really does come into its own, in my case 2.5p kWh heat.</p><p></p><p></p><p>And it's not what I said!</p></blockquote><p></p>
[QUOTE="johnb2713, post: 547032, member: 35153"] Heatpumps usually run between a COP of 2 and upto 4.5 dependent on outside air temp and flow temp. Gas boilers on the otherhand tend to run around 80 to 85% for a condensing boiler, much worse for a non condensing one. These figures need factoring in when considering heatpumps etc. So if gas is 10p kWh, correcting it for boiler efficiency would give you £12.5p per kWh of heat, a heatpump on a standard tariff say 30p would give you 10p per kWh of heat. If you have solar or battery then it really does come into its own, in my case 2.5p kWh heat. And it's not what I said! [/QUOTE]
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Going over to Electric - Does a houshold supply need upgrading?
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