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<blockquote data-quote="ProDave" data-source="post: 410181" data-attributes="member: 6969"><p>You need a lot of land for a GSHP and we don't have that much. It would mean digging up just about every bit of garden and filling it with slinky pipe.</p><p></p><p>When you look at the cost of the amount of pipe you need to bury, then the not inconsiderable amount of anti freeze you have to put in it (which heeds replacing every 10 years) then the materials alone cost as much as the heat pump.</p><p></p><p>So it was a lot simpler and cheaper to fit an air source pump, but fully accepting it won't perform as well. We will have a wood burner for when the weather is too poor for the ASHP</p><p></p><p>Of course once it's all signed off and people have stopped poking their noses in, I might experiment with a water source heat pump from the burn, but the paperwork to get permission to do that properly would be ridiculous.</p></blockquote><p></p>
[QUOTE="ProDave, post: 410181, member: 6969"] You need a lot of land for a GSHP and we don't have that much. It would mean digging up just about every bit of garden and filling it with slinky pipe. When you look at the cost of the amount of pipe you need to bury, then the not inconsiderable amount of anti freeze you have to put in it (which heeds replacing every 10 years) then the materials alone cost as much as the heat pump. So it was a lot simpler and cheaper to fit an air source pump, but fully accepting it won't perform as well. We will have a wood burner for when the weather is too poor for the ASHP Of course once it's all signed off and people have stopped poking their noses in, I might experiment with a water source heat pump from the burn, but the paperwork to get permission to do that properly would be ridiculous. [/QUOTE]
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