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Author Topic: GSHP RHI - newbie advice needed!  (Read 40142 times)
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« Reply #15 on: April 11, 2015, 06:40:41 PM »

This implies the cost of GSHP installation to be between 11 & 15k. My house will be a 4-bed semi, so it looks like i should get at least 20k back over seven years. So, yes, my understanding is that Domestic RHI should more than pay for the GSHP installation. If that is incorrect, then i would definitely reconsider.
For us, the quotes including groundwords and oversize radiators are coming in at ~26K for a 3 bed bungalow. That makes the system costs around 10K greater than the RHI in our case. Other peoples mileage will obviously differ.

Edit: Given what Ivan says maybe my assumption that the cause of the discrepancy is the apparently OTT heat demand on the EPC leading to an over spec. system isn't correct. It just goes to show that not all cases are average.,,
« Last Edit: April 12, 2015, 02:53:15 PM by skyewright » Logged

3.91kWp PV  (17 x Moser Baer 230 and Aurora PVI-3.6-OUTD-S-UK), slope 40, WSW, Lat 57 9' (Isle of Skye)
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« Reply #16 on: April 13, 2015, 11:27:26 AM »

In my view, a GSHP is a good idea, as long as you have oversized radiators. From an RHI point of view you really want underfloor heating or 4.3x oversized radiators IN EVERY ROOM. As long as you are not using vertical ground loops (very expensive), then it's generally going to have a reasonable pay-back period with RHI. Navitron is selling MCS-certified GSHPs incidentally, but due to long delays in getting new things onto the website, it's not listed online yet. Give Navitron a call if you're interested in purchasing, or if you need an installer. These are the GSHPs that Navitron is selling:

Thanks. I plan on installing underfloor heating throughout and making the house as efficient as poss. At the end of the day, i guess it will come down to installation cost. If in the range that seems to imply (i.e. 11-15k), then, with RHI, it really does look a no brainer. But, when ready, i will get some quotations and see.
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