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Hi all, I currently have two Willis heaters (Read more here) providing the 6kW for the slab (proving very expensive now), I am now looking to get an ASHP installed. Question is, should I go via the BUS grant or should I source a unit off ebay and either attempt a self install or get a local fitter to install? I'd like to think that the grant would now cover the simple install! Further questions: How long does it take once the installer has applied for the £7.5k voucher? I'd like to have an install completed ASAP before the temps drop and there's a significant demand for heating in the house. The setup would be fairly straight-forward, with the heat just being fed directly into the slab, so no need for cylinder etc. Previously (2019) I had a quote for a Mitsubushi 8.5kW which also included the installation only of 2 Sunamp units (previously purchased but now installed) which came to £8,000. Presume that would have been a 2 day install at max, so imagine that realistically, today's figure would be less! I expect of course to get a much inflated price back when I go back for an updated quote with the excuse being short-supply of units, price increase etc. Self-install? So the alternative is to self install (with electrician), but would like to keep the controller KISS and the unit install itself would need to be a relatively simple to install and connect. I've done all of the plumbing including the Willis heaters (except the Sunamps) so would like to think an ASHP install is within my grasp. Worst case, I'd have to rope in a local plumber who has some experience of installs - maximum of a day I would think? Any feedback gratefully received!

Hello buildhub residents. My first post here. I'm self-building a passive house in East Anglia and I'm looking at heating, DWH and potentially cooling solutions. My question is this - a load of companies seem to manufacture units that are either multi-split of mini VRF and have A2A refrigerant inverters available with a hydrobox for DWH (that's my reading of the marketing docs, please correct me if I've misunderstood the technology) But NONE OF THEM are available in the UK it seems (I hope I'm wrong, but I've called them and nobody knows anything about these units here). Does anyone have a good sense of why they're ether not bothering with the UK market, or why they're unable to get them licensed here? Maybe something to do with the distortions created by the Boiler Upgrade Scheme? The list has most of the big guys one it: Mitsubishi PXZ series - see around page 25 of this pdf here: https://kokotasgroup.gr/entypa/pdf/FULL_PRODUCT_HEATING_WEB--281-29_6166.pdf Samsung EHS TDM Plus Climatehub - https://samsung-climatesolutions.com/en-gb/b2c/our-solutions/home/heat-pump-solutions/heating-cooling/tdm-plus.html Daikin Multi Plus - https://www.daikin.ie/en_gb/product-group/air-to-air-heat-pumps/multiplus.html Panasonic Aquarea Ecoflex - https://www.aircon.panasonic.eu/IE_en/happening/aquarea-ecoflex/ LG Multi-V compact with Hydro kit - probably too big for my house, but anyway https://images.b2bmkt.lge.com/Web/LGElectronics/%7Bc5c4ca24-a96c-4aed-9cc9-97e1f6dbabf2%7D_2023_4Q_White_paper_Hydro_Kit_Low.pdf? ArgoClima iseries split - https://www.keaneenvironmental.ie/argoclima/iseries-split-pump/ Midea CirQHP- https://www.prnewswire.com/news-releases/midea-comes-to-ish-frankfurt-2023-with-its-latest-water-and-space-heating-solutions-301774592.html And yet - nothing available in the UK....