Last seen: Aug 15, 2025
Keep it out in the open! Others will want to have a look and possibly comment. The heat loss report estimates the heat loss to be 7.42kW at -5.28°C ...
@jamespa - thank you for your ongoing heroic attempts to make sense of all this. I too had noticed this different behaviour. Here are the two per...
For completeness sake, and I may as well document it here as anywhere else, I have now done the other test I mentioned earlier for whether the two sam...
It may be be because the controller has been changed, and has gone to some albeit rather odd defaults. See if you can set them to what you had before....
And finally, the R version tidied up a bit and larger, so 95% confidence interval bands are more visible: The R code used (slightly different,...
Calculation based heat loss assessments are often particularly over the top for older buildings because the assumed U values for walls are just plain ...
Now we are all posting at the same time! One thing to add - I agree with @jamespa, there is no such thing as a ridiculously low curve, only a curve th...
@cliffhanger @editor - I would be inclined to ask how and why is the overshoot happening. I'd start by looking at the estimated heat loss, and how the...
Here's the same plot, less the R squared values, done quick and dirty in python, with the one done in R on the right: They look the same to me a...
Latest Posts
-
RE: What crazy nonsense are inverter limits and why are they imposed?
I disagree. You don't even require G99 consent from y...
By Transparent , 24 minutes ago
-
RE: Electricity price predictions
Actually there would be a good logical case for this. ...
By JamesPa , 36 minutes ago
-
RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@jamespa unfortunately, your plumbing and shelving appr...
By GrahamF , 2 hours ago
-
I've heard good things about FoxESS too. I have a work ...
By Majordennisbloodnok , 2 hours ago
-
RE: Mitsu Wireless Controller and MelCloud
@robs Hi Rob, At the end of a note to Mitsu UK, thank...
By DavidAlgarve , 17 hours ago
-
RE: Why so many sigenergi installer recommendations?
@adamk Tesla is a great option, it’s also one we instal...
By SAEnergy , 1 day ago
-
RE: Rodents! A word of warning for heat pump owners
Hradline in Telegraph: Brace for plague of rats after s...
By Tim441 , 1 day ago
-
RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
As a potential heat pump customer, it would be good to ...
By Temperature_Gradient , 1 day ago
-
RE: Octopus replacing the fixed 15p/kWh export rate with a market tracking one
@trbob I have just extracted the details for Agile Expo...
By Toodles , 2 days ago
-
RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
The Ultimate Guide to Heat Pumps is less than a month a...
By Mars , 2 days ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor Hi Mars, We have just installed a Grant Aerona...
By GrahamF , 3 days ago
-
RE: Sanity check please. Battery storage and inverter sizing.
There are MCS guidelines about how close to the edge/ri...
By Old_Scientist , 3 days ago
-
RE: Balancing financial efficiency and comfort using the Octopus Cosy tariff
I estimated our usage on the following basis. The mos...
By Old_Scientist , 3 days ago
-
@editor Something changed in this last 12 months, they ...
By ASHP-BOBBA , 4 days ago
-
RE: Ecodan & MelCloud scheduling
I put the above question to Mitsu UK at the sme time as...
By DavidAlgarve , 4 days ago
-
Thanks for the heat geek info. I've fitted my own heat ...
By bontwoody , 5 days ago
-
RE: Does anyone have experience of a smart water meter?
Just to give a sense of scale, I've used the CCW water ...
By Majordennisbloodnok , 5 days ago
-
RE: Powerwall 3 or Myenergi or something else?
We have a Tesla Powerwall 3, recently installed, so I m...
By Old_Scientist , 6 days ago
-
RE: Mitsubishi PAR-WT60R-E Wireless Controller installation
@morgan They have been paired once but it was thought b...
By DavidAlgarve , 7 days ago
-
RE: Isolating the system for a planned power cut
A great many ground-mounted local substation transforme...
By Transparent , 7 days ago
