Last seen: Dec 4, 2025
That does sound surprising! I expect that you're right - the backup heater is likely to be an inline immersion somewhere. How do you measure the ...
@catapult I’m pretty sure that black thing in your pic is a magnetic water trap. Strong magnets inside pick up bits of circulating rust flaking of...
An Electrician will be able to fit a meter to your gshp system, and I think it's the first step in understanding if it is functioning well. I underst...
@william1066 I think that you're right - dropping the LWT always improves the COP of the compressor. The DeltaT is pretty much irrelevent to the c...
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...
Latest Posts
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RE: Mitsubishi Ecodan R290 10kW performance
@jamespa I appreciate the questioning, you are correct...
By Ecoste , 11 minutes ago
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@jamespa I have found that it comes as a shock when we ...
By Toodles , 15 minutes ago
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One potential project on my future wish list will be to...
By Sheriff Fatman , 38 minutes ago
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RE: New Fogstar 15.5kWh upright solution
I don't get it because JK to solis is one of the most c...
By swwils , 1 hour ago
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RE: My Powerwall 3 Consumes 3-4 kWh/Day in Self-Consumption: Is This Normal?
I suspect a good chunk of the "losses" are power consum...
By Bash , 1 hour ago
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RE: Speedcomfort radiator fans
&mars SpeedComfort have confirmed my understanding ...
By Richard24738 , 2 hours ago
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RE: Need Help Optimising My Rushed ECO4 Install: 12kW Bosch Heat Pump
Hi @mickamills . Welcome to the forum. It sounds like...
By bontwoody , 2 hours ago
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RE: Midea ASHP – how to set weather compensation
@curlykatie did you get sorted with this?
By MickaMills , 2 hours ago
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RE: External pipework insulation
@transparent I hope you are not being admonished @trans...
By Toodles , 2 hours ago
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RE: Setback savings - fact or fiction?
Oops, well spotted, thanks. Yes they are the wrong way ...
By cathodeRay , 3 hours ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
The FT levels off at either the set point OR the minimu...
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RE: MyVaillant Connect Regular Disconnect
Thanks. Yes, if the time is consistently 11pm every nig...
By buckwem , 24 hours ago
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RE: Who's your electricity provider and what's your tariff?
@transparent Thanks, this helps. Could it be that St...
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RE: Clivet ASHPs and weather compensation
Simon did share a lot of very helpful advice. On furthe...
By ambris , 1 day ago
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RE: Advice on internal circulation pump noise
Extend the primary branch and make sure you have more t...
By ASHP-BOBBA , 2 days ago
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RE: Jokes and fun posts about heat pumps and renewables
By Morgan , 2 days ago
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RE: Controlling Daikin Altherma via P1P2 and Home Assistant
On the contrary, @toodles, that’s a lot of help. I’d ne...
By Majordennisbloodnok , 2 days ago
