Last seen: Dec 19, 2025
@jamespa I followed your advice and the room temperature drifted up slightly to around 20.5C, even hitting 20.7C at one point. I am not sure that t...
@paultheheating I wonder if you are being a bit pessimistic. A friend of mine moved from an oil boiler to a heat pump. Oil is so expensive compared ...
@allyfish thanks for your observations. At the moment, I suspect that my upstairs radiators are receiving too much water flow even without the +/-10%...
@giryan I understand your dilemma. I was in a similar position earlier in the year and was certainly nervous about installing a heat pump. However, ...
Well you certainly are a brave polar bear! A few comments: I presume you have insulated the remainder of the pipe work, since you took the fir...
We are on the Intelligent Octopus Go tariff. We installed a heat pump in the summer and our solar panel and battery installation is almost complete. ...
@editor Here are my suggested questions: In your designs, how do you trade off the up-front cost of the system versus ongoing running costs? What...
It may be cycling on and off a lot. Do you have any graphs of the compressor frequency, water outlet/inlet temperature, other relevant data... over s...
Some photos might help as well.
@jamespa I agree that people should use measurements of the performance of the existing system as input to their heat loss estimate. It makes sense t...
@jords it sounds as though you have been having a frustrating time. I had some similar experiences. Here are a few pointers: All installers have...
Latest Posts
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RE: ASHP sizing - value of Heat Transfer Coefficient
Sorry, but I cant see what the point of this is unless ...
By JamesPa , 11 hours ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
TC Thermostatic Radiator Valve TRV Plastic Decorators S...
By Toodles , 15 hours ago
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RE: Ecodan unable to hit legionella target temp - what's the consensus?
UPDATE: Thanks everyone who commened with suggestions h...
By 9jwr9 , 19 hours ago
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How long will your energy contract last?
Some heat pump tariffs don’t run as long as a heat pu...
By Toodles , 3 days ago
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@morgan They are unsupervised these days, can’t get the...
By Toodles , 3 days ago
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RE: Setback savings - fact or fiction?
Exactly. We only need to compare conditions, to decide ...
By cathodeRay , 4 days ago
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RE: Balancing financial efficiency and comfort using the Octopus Cosy tariff
I found because I have very low heat loss I can set bac...
By RadWhisperer , 4 days ago
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RE: Need Help Optimising My Rushed ECO4 Install: 12kW Bosch Heat Pump
Welcome @mickamills We too have an oversized 12kW Sa...
By Old_Scientist , 4 days ago
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RE: My Powerwall 3 Consumes 3-4 kWh/Day in Self-Consumption: Is This Normal?
@caron I can confirm that the power usage of the PW3 is...
By Old_Scientist , 4 days ago
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RE: Speedcomfort radiator fans
Thats true, but having tried (and succeeded) in constru...
By JamesPa , 4 days ago
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RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
@bash brilliant, thanks for the feedback
By energy9165 , 4 days ago
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RE: Heat Pump Heats the House… But It’s Not Cosy. Emitter Changes or System Tweak?
@alastair There I was, feeling grumpy, he said “Cheer u...
By Toodles , 5 days ago
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RE: Grant Aerona: Is there a setting to keep the 2-port valve open during pump blockade
Depends on OAT. Mine cycles at OAT>10 and of course...
By JamesPa , 5 days ago
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RE: New Fogstar 15.5kWh upright solution
@transparent My conclusion is as you have noted, tha...
By Bash , 5 days ago
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RE: Mitsubishi Ecodan R290 10kW performance
And to you too. Wishing you a very enjoyable festive s...
By Sheriff Fatman , 5 days ago
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RE: External pipework insulation
They do? But that isn't apparent from the photos we'r...
By Transparent , 5 days ago
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RE: Say hello and introduce yourself
@velcro welcome to the forums. Please feel free start a...
By Mars , 5 days ago
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Daikin EDLA11D3V3 DHW Settings
I have a newly installed EDLA11D3V3 which I'm still get...
By Velcro , 5 days ago
