
Last seen: Sep 10, 2025
@jamespa - your heat pump selection logic makes sense, and I also get the importance of aesthetics. This thread now demonstrates a fossil fuel boiler ...
@jamespa - an interesting chart, it shows the method working for a large fossil fuel data set. I suspect if you cleaned up the data a bit, you might g...
But in an elevator?
Which is why I have tried plotting 24 hour periods rather hourly periods, and sure enough the correlation does appear to be very good, remarkably good...
@jamespa - you know I do! You can't have forgotten the many discussions we and others have had about it, some of which have got rather warm on occasio...
Energy input (used, consumed) you have, it's what your meter says it is, and you just total it for each day (or subtract previous reading from current...
Given this, and the fact you seem to have a fairly good consensus based assessment of your total heat loss, can you do what I did, that is find a peri...
My suggestion is the heating is always on (on the timer) during any heat loss assessment exercise, set to a constant IAT, the only on/off activity wil...
@majordennisbloodnok - interesting questions that I don't know the answer to, but the thinking behind them is the same line of thinking I had when I w...
Interesting (and a splodge is another example of what I recently called monkey plots). I wonder if the hourly plots fail because your system is very v...
It means what it says, but if you want a rewording it might be 'not for the first time the data is messy (incomplete, haywire values at extreme ends o...
Here we go again, messy data making monkey plots! What I have, and can and can't do: (1) minute by minute recorded data for all variables of interes...
- 26 Forums
- 2,158 Topics
- 47.4 K Posts
- 15 Online
- 5,736 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Midea ASHP – how to set weather compensation
I think it is a bug in the code, it comes on even when ...
By cathodeRay , 6 hours ago
-
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@ashp-bobba wish you lived closer to Wiltshire! My inst...
By pash44pump , 7 hours ago
-
RE: COP is not the only measure of efficiency
@jamespetts Interesting post, thanks. Here are my thou...
By GrahamF , 7 hours ago
-
RE: Who’s Caved and Switched the Heating On Already?
@editor So… who’s given in and turned the heating on al...
By Lucia , 7 hours ago
-
RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
I am pleased to say at 4pm today we have added another ...
By ASHP-BOBBA , 8 hours ago
-
RE: Buffers, hot water and cooling
@jamespa Your reasonably close! Especially with warmer ...
By dgclimatecontrol , 10 hours ago
-
RE: Renewables & Heat Pumps in the News
To unpack this a little.... 1) how many of us in this...
By Lucia , 17 hours ago
-
RE: Vaillant aroTherm Plus 10kW thoughts?
@realevil the fans and fan speed / coil size (height, w...
By ASHP-BOBBA , 1 day ago
-
RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan this can just be done by your sepecilist when t...
By ASHP-BOBBA , 1 day ago
-
RE: Anyone still weathering it out with Agile?
@toodles I guess it all comes down to import averages. ...
By Tim441 , 1 day ago
-
RE: 300 Liter Tank - Do I have to heat it all?
The size of DHW tank affects the anti-legionella cycle....
By Transparent , 1 day ago
-
RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
By HCas , 2 days ago
-
RE: Solar Thermal DHW and ASHP
I was originally contemplating a solar thermal installa...
By jamespetts , 2 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
My system installed in July 2024 has produced 6.4mWh in...
By jamespetts , 2 days ago
-
RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
By GrahamF , 2 days ago
-
RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 3 days ago
-
RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 3 days ago
-
RE: Can you help with our research: solar panels, EV chargers, home batteries, heat pumps?
Just done your survey!
By Judith , 3 days ago
-
RE: Failing heat pump system - seeking thoughts on a rebuild
@cleardene-ashp just thinking about your issues here. Y...
By Judith , 3 days ago
Members Online
No online members at the moment