Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Last seen: Sep 23, 2026
I assume that the vertical axis is kWh/week (ie energy consumed/delivered in any one week), consistent with the title, can you confirm. If so oil pea...
As I said it depends on what you are trying to calculate. If you are trying to calculate heating load (ie what the house needs) then degree-days are ...
Be careful not to confuse kW (power) and kWh (energy). 12.3kW is the (calculated) peak power demand at the design temperature. To get to kWh/year yo...
@cathoderay Thanks The first observation I would make is this: 1100l oil per year is 11.4MWh. Even if your oil is 100% efficient that would sug...
@derek-m Surely that depends on what you are trying to calculate. Degree days will tell you about demand (load) profile whatever the heating technolo...
It deserves an explanation if collectively we can find one. You seem to have done many of the obvious things right, and it would be instructive to fi...
I havent found a source of hourly data over an extended period of time which is available for free (you can get about a months worth at a time here:/p...
My answers in short to the questions asked (I can provide more detail on request): 1. No, I would trust this and other forums. Government/Industry ...
If that is the case (which I can, sadly, easily believe) then its very badly set up indeed. The energy used should be about one third. Running costs...
Hopefully I didn't say quite that (and if I did, I apologise)!. I base my more nuanced comments on 1. reading the MCS rules 2. getting 10 qu...
@dougmlancs interesting, I'm surprised it's that high although with new properties being small it's perhaps not surprising. Having had combos in...
Quite possibly not. However ASHPs are associated with air-conditioning and LPAs are accustomed to imposing noise constraints. So I think we have to ...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Solar Power Output – Let’s Compare Generation Figures
@downfield I was seriously considering Tide Lifestyl...
By Papahuhu , 8 hours ago
-
RE: Passiv Smart Thermostat - Help & Forum Support
Thanks Will. I'll probably be a week or so before get...
By Singlespeed , 10 hours ago
-
RE: Cooling using an air to water heat pump
From experience this summer, a single-split A2A unit on...
By Rob of York , 17 hours ago
-
@mrkfm, I’m definitely not trying to put anyone off get...
By Mars , 1 day ago
-
RE: Why are ASHP installs so expensive?
Posted by: @springswood I confess to becoming a litt...
By Rob of York , 2 days ago
-
Analysis of the economics of switching to an A2W ASHP compared to other heat sources
This post aims to analyse the economics of installing, ...
By Rob of York , 2 days ago
-
RE: Cooling with air to water heat pumps
@editor does that mean you have to have two separate ex...
By mrkfm , 2 days ago
-
RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
Posted by: @ian-s Could always use the money saved o...
By Rob of York , 3 days ago
-
Depends on what controls the pump! Thats the whole poi...
By JamesPa , 3 days ago
-
The positive reviews keep coming in for Britain's Heat ...
By Mars , 3 days ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
I have one of these fitted which also allows you to reg...
By Old_Scientist , 4 days ago
-
RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
If they can't don't give up. Heat pumps are, in reali...
By JamesPa , 5 days ago
-
RE: Missing flow temperature in Heat Geek proposal
Yes that's what would happen by turning down the lsv to...
By JamesPa , 5 days ago
-
RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 5 days ago
SPONSORS
