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Last seen: Oct 7, 2025
@cathoderay I did some maths over my lunchbreak and I think I've got an explanation for why there is a polynomial in the relationship. I think it is...
I also found other forms of the curve that better fit the data when doing my EDA, many of which confused the hell out of me, including the polynomial ...
@cathoderay I've made a few modifications having looked through your posts. First, the problem with applying the "no setback" model to the "yes setb...
So I did a quick model in R on the hourly data, and I found that the setback period used 1% less electricity than the model suggests would have been u...
This is absolutely the right question to ask, and then to follow up - so what should your should your strategy be for raising and lowering the set tem...
You could try increasing the tank target temperature so that, even if it's 3C below and doesn't trigger, it's still hot enough for long enough to supp...
I'm on Intelligent rather than Cosy, but I have automated my heat pump to boost the flow temp by 5C during the cheap period. I don't think it's game c...
It's also 2.4kWh extra heat generated in your home (assuming the circulating pumps are inside the thermal envelope of your home).
If we're getting R-squareds of 0.9 with just the OAT vs energy consumed, then we're probably not going to be able to discern a 5-10% difference in ene...
This was my experience too, and our installers removed the FTC6 and replaced it with an FTC5. Otherwise, I believe, you have to invest in the dedicate...
@jamespa I think it is better to measure energy consumed of course, but then you also need to take into account things like Time of Use tariffs. For e...
There's really no meaningful difference between those two lines at all. People can set their setbacks if they want and not worry about it, or people c...
Latest Posts
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RE: Estimating true heat loss from twelve months of consumption data
@ian33a — a measured heat loss always trumps a calculat...
By cathodeRay , 4 minutes ago
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RE: Setback savings - fact or fiction?
@cathoderay Thanks for your detailed response.Just two ...
By PeterWurmsdobler , 12 minutes ago
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RE: Grant Aeona 3 R32 cycling with weather compensation.
The hot water heating looks normal. The heat transfer ...
By GrahamF , 2 hours ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
Good questions @temperature_gradient. My understanding ...
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RE: Anyone concerned about GivEnergy?
@sunnyskies I agree with Downfield trying to ask the GE...
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
All going according to plan, mid July we get that 7kW a...
By Batpred , 15 hours ago
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Current metrics - DHW target set to 47c
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RE: My Grant R290 9kW Heat Pump Installation
@petch I'm very sorry that I have not picked up your po...
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Suggest you have a trial with Havenwise app. I have th...
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RE: DIY or Don’t Touch? Solarman Smart Meter Install
That was my understanding also.
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RE: Vaillant Sensocomfort Time
Oh I remember this from when I set mine up 2 years ago,...
By JamesPa , 2 days ago
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Heat geek have already stated that the pro is in fact c...
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RE: The Myth of the MCS Performance Guarantee
@editor I know. As if MCS wasn't bad enough, it's now e...
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