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Last seen: Jun 26, 2026
That's interesting, but OFTEC is the oil fired technical association, and one can't help but feel this sounds like self-preservation? If there's adequ...
@cathoderay quite! It does rather complicate hanging a picture, etc. I'm hoping the system runs at SELV, but maybe not.
I like the thinking outside the box. Air source heat pumps are designed to take enthalpy (the energy state of outside air) at fairly low levels, trans...
The Grant low loss header is a decent bit of kit, but Grant bizarrely don't put flow monitoring and adjustment gauge on primary and secondary circuits...
@soniks I think they are sometimes not wired up on the Grant installs. Mine was, but I recall the installer saying he was not supposed to enable it us...
@lfranklin used to divert excess solar PV generation into a system hot water tank via the 3kW immersion. About £350-400. Friends with them have said t...
@lfranklin ah, yes, you'll need a smart meter for Cosy. My PV export tariff is 'Outgoing Octopus 12M fixed' their standard 15p/kWh fixed arrangement. ...
Have you got a variable rate tariff and have scheduled the Growatt battery to charge during cheap rates to supply during standard and peak rates? It's...
@katcesca what flow temperature has your MCS estimate based and sized the design on? This is THE most fundamental element of an ASHP efficiency and th...
@marvinator80 you got lucky on the SAP EPC lottery! I went up from a D to a C. My heating and hot water scores both went DOWN after ASHP and solar wit...
@mike-patrick - click on 'document' @ronin92 - clearly whoever is in charge at the BRE and tasked with preparing the SAP methodology for heat pump e...
@marvinator80 ahhh, right, check the cylinder stat. Here's the info for that stat in Appendix A p.30. When the stat is demanding heating, the green LE...
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RE: Renewable Heating Hub Homeowners' Q&A Podcast
This was interesting and seem like its very expensive o...
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As we know here, the success or not of plug-in storage ...
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
Samgsung Quint is an A2W heat pump that also does A2A i...
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RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
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RE: How should the Boiler Upgrade Scheme be reformed?
Ah, that makes sense when a combi is in place. The boil...
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage
@bobflux Thanks, that gives me something to check the i...
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RE: Tesla Powerwall (2) Calibration Cycles
For Powerwall calibration, avoid forcing repeated deep ...
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Over the years, due to the non barrier PEX underfloor h...
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RE: Getting closer to a finished Haier system
All the 45° elbows required for getting the primaries i...
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RE: battery storage without solar
Indeed, current on the grid input = current used for ch...
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@papahuhu @papahuhu A lot of tears and sweat went into ...
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