Last seen: Apr 24, 2025
Groundsource is usually a lot simpler - a lot of them are just simple on/off things just like an old fridge, controlled by relays and thermostats. Th...
@murchison2003 Our heatpump is tiny. It takes 1800W from the ground outside, using 600W of electricity. So that 1800W from outside over 200m (30m...
@derek-m It is gshp yes! 230m of pipe buried in the back garden, 800mm down. Had it for just over a year, all good so far:-)
@derek-m Cheers, I’ve obsessively been insulating for years, I need a new hobby! @kev-m It’s actually LWT-Tgroundwater. Not that it makes a h...
Our heatpump has been going for 13 months, used 1580kWh of electricity, and produced 5803kWh of heat. Most of that is heating the (4 bed 1963 build) ...
I started by cable tying temp sensors to pipes, and wrapping with loads of insulation, re-wrapping, getting a different answer... There is no doubt i...
In my experience, the temperature is much harder to monitor accurately enough than the flow rate. We need two sensors well connected to the flow and ...
@iancalderbank The flowmeters I use are cheapie £8 things that look like this from Amazon, which claims 2%. I have two, one on the house circuit m...
@derek-m The sensors are tsic506f, and they connect up to an mbed(old micro type I’m used to) that I programmed with a free Arm account. There’s a...
I used a couple of 0.1C accurate temperature sensors for flow and return - they’re pushed into thin copper tubes which are thoroughly soldered to the ...
We changed the glass in our circa 1990 uPVC windows 11 years ago. The double glazing units that were in were the standard of the time: 4mm glass/16mm...
@mattengineer It follows the load quite well. If the Indra box is "on", then the smart meter tends to read between -50W and +50W, except in the ch...
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RE: Plug and play solar. Thoughts?
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@editor @bart Hi, I can see a few problems with your in...
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RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
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RE: Location of hot water isolation valve on cylinder
@rossowheels if you isolate the water supply in it will...
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The Importance of Radiator Balancing for Efficient Heating: Introducing the Flow Regulating Valve
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RE: Servicing Hitachi HP in rural Somerset
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RE: Heating coming on when not required
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RE: Pressure drop Primary circuit
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Have your say in the Renewable Heating Hub Awards
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RE: Mitsubishi cycling while on chilled water output
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RE: Weather compensated secondary circuits with Biomass
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