Jekyll2025-03-20T12:59:07+00:00https://crog.uk/feed.xmlCrog.UkCROG is about Carbon Reduction and Ongoing Greening of our energy usage to reduce costs and environmental impact.Craig Hutchinsoncroguk-contact@crog.ukHeatPünk - Free web based heat-loss calculator2024-03-08T09:27:02+00:002024-03-08T09:27:02+00:00https://crog.uk/heatpump/2024/03/08/Free%20MCS%20Compliant%20heat%20loss%20calculatorIf you are looking to do your own heat-loss calculation to compare against 3rd party quotes or do some preliminary research. Then there are many options out there. I would recomend HeatPünk https://heatpunk.co.uk/ is actually a sureprisingly simple tool. Being fully web-based its easy to get setup with a free acount and setup your floor plans in a visual and intuitive manner. I currently have no point of reference to compare but will be looking to get professional heat-loss survey in future to compare. Noteable though is there is much debate over Air Changes/hr which on its own will dramatically affect your heat-loss estimates.

Heatpunk - the free, MCS-compliant heat loss and heat pump design software - has launched exciting new upgrades!

Its made by https://midsummerwholesale.co.uk/ which is also why they provde it free as if your interested you can transfer your system over to the Wholesalers main site for accurate pricing quote!

]]>Craig Hutchinsoncroguk-contact@crog.ukAre ASHP datasheets reliable?2024-03-07T16:11:00+00:002024-03-07T16:11:00+00:00https://crog.uk/heatpump/2024/03/07/Are%20ASHP%20datasheets%20reliableThis is an open question of mine, questions the datasheet SCOP figures for many products.

Firstly, it appears some manufacturers are very active and update their performance figures. The one place we have to verify is the MCS Product database which provides 3rd party verification and correlation here is our key indicator of data reliability.

Ideal Heating (and others TBC) are not showing the verified figures on their website, either due to compilcated internal processes or lack of desire to show a public image with lesser performance.

This is our concern as to how we know what numbers to trust?

So, in need of picking an example, I will take Ideal Logic Air 5kW as a basis of what appears to be over-stated SCOP on the marketing site and donwloadable datasheet!

Data Source SCOP@35C SCOP@45C SCOP@55C Link
Site+Datasheet 5.07 N/A (4.36 est.) 3.65 Datasheet
MCS cert. KIWA 00027/023 HP 4.39 3.83 3.06 MCS Product Database
Discrepancy +0.68 +0.53 +0.59  

I get that they want to make things look good but this could be misleading consumers and as a community we may need to find how we raise this.

For me, here we will need to include MCS correlation in our product databse to have higher confidence in the figures, there is a lot to verify and digest here.

Current list of verified devices that match third-party MCS verified SCOP performance:

  • Ebac 5Kw
  • Vaillant 5Kw
]]>Craig Hutchinsoncroguk-contact@crog.ukComparison of 5Kw Heat Pumps2024-02-15T11:14:02+00:002024-02-15T11:14:02+00:00https://crog.uk/heatpump/2024/02/15/5Kw%20Heat%20Pump%20SCOPThis is a comparison table of all 2024-2025 heat-pump datasheet figures for make+models I am aware of.

Criteria:

  • Target property 4-5Kw
  • EN 14511/14825 (?) Average Climate and Low temperature = 35C and Medium = 55C
  • Ordered by SCOP where higher is better. Where order is ambiguous the SCOP at 45C is used, and then 35C i.e. We prefer mild weather performance which gives greater yearly SCOP.

All SCOP figures are now correlated (i.e. replaced) with MCS 3rd party certified figures where possible. Please be aware :broken_heart: currently indicates a device that has not got a verified performance and may not be correctly ranked among others.

Make/Model SCOP@35C SCOP@45C SCOP@55C Gas Comment/Validation Sound Power Level (dBA) Date Valid Wall-Mount Site/Datasheet
1   3     2     4  
Lambda 8Kw 5.66 5.07 4.48 R290 :broken_heart: No MCS cert as of 2024-06 42-56 2024-12 :x: site datasheet
Ovum AC208P 5.53 4.89 4.00 R290 :broken_heart: No MCS cert as of 2024-06 41-54.5 2024-07 :x: site datasheet
LG ThermaV HM093HF 9Kw 5.04 3.74 3.75 R290 :orange_book: MCS 011-1W0831_04 over Datasheet(5.23,4.49,3.75) 48-49 2024-01 :x: site datasheet
EBac H1A05WG-GB 5Kw 4.91 4.38 3.96 R32 :gem: MCS HP0369/01 64.5 2024-02 :+1: site datasheet brochure
Nibe 6kw 4.87 4.07 3.46 R32 :orange_book: MCS 012-C700141 over Datasheet(5.08,4.33,3.58) 53 {todo} :x: datasheet
Samsung Gen7 5Kw 4.84 4.14 3.43 R290 :gem: MCS 011-1W0686_2 55 {todo} :x: datasheet
Stiebel Eltron WPL-A 07 4.66 4.21 3.69 R454C :orange_book: MCS 011-1W0393_02 over Datasheet(4.88, ? , ?) 48 2024? :x: site datasheet
Aira 6KW 1.0 4.62 4.10 3.58 R290 :green_book: Source MCS HP0372/06 57 2024-03 :x: datasheet
Baxi 5Kw 4.77 4.06 3.39 R32 :gem: MCS HP0033/10 58 {todo} :x: site
Viessmann 151.A06 4.53 4.03 3.61 R290 :green_book: MCS 011-1W0590_06 over Datasheet(4.58,4.10,3.61) 51 {todo} :+1: datasheet brochure
Bosch CS5800iAW 5Kw 4.53 3.90 3.28 R290 :orange_book: MCS MCS HP0329/06 over Datasheet(4.65,4.08,3.50) 42 {todo} :x: site
Mitsubishi Ecodan 4.42 3.90 3.53 R290 :orange_book: MCS 037-0135-23-1 over Datasheet(4.62,4.08,3.53)   {todo} :+1: site
Ideal 5Kw 4.39 3.83 3.06 R32 :orange_book: MCS KIWA 00027/023 HP over Datasheet(5.07,4.36,3.65) 52 2023-06 :x: site
Vaillant aroTherm+ 5Kw 4.48 3.77 3.06 R290 :gem: KIWA 00016/018HP 51-55 {todo} :+1: datasheet
Daikin Altherma 4Kw 4.43 3.72 3.20 R32 :green_book: MCS 011-1W0527_3 over Datasheet(4.48,3.87,3.26) 60 {todo}   site
Octopus Cosy 6 3.98 3.36 3.06 R290 :green_book: MCS HP0255/03 53.8 2024-05 :x: datsheet. MCS database source https://mcscertified.com/product-directory/
CTC Ecoair 700M ???? ???? ???? R290 :broken_heart: No MCS cert or data of any SCOP kind as of 2024-03 46 2024-03   site.
Wonderwall DR-HP-006-UK ???? ???? ???? R290 :broken_heart: No MCS cert or data of any SCOP kind as of 2024-03 60 2024-03   datsheet.

1Make/Model = models may cycle due to being oversized i.e. 8KW+

2 :gem: = Datasheet-matches-MCS, :green_book: = MCS-only-or-close-match, :orange_book: = MCS-not-close-to-datasheet, :broken_heart: = Not validated/Unknown

31.23 = SCOP at 45C calculated as MEAN(35,55) when not made available in datasheet. This produces conservative underestimate of SCOP when unavailable.

4Only if directly shown in datasheet, many, if not all could be wall mounted, but not directly mentioned in datasheet.

ToDo:

  • Add Wonderwall DR-HP-006-UK https://wondrwall.com/products/air-source-heat-pump/#technical-specifications
  • Add CTC Ecoair 700M https://ctc-heating.com/products/air-to-water-heat-pumps/ctc-ecoair-700m

Changes:

  • Fix data-entry error on Ebac 45C 4.63 to 4.38 (down to 4th)
  • 2024-02 Ovum AC208P from 5.78 to 5.53 @ 35C, 4.15 to 4.00 @ 55C etc. old-datasheet
  • 2024-02 EBac H1A05WG-GB from 5.11 to 4.91 @ 35C, 4.12 to 3.96 @ 55C old-datasheet
  • 2024-04-25 Added Aira 6KW 1.0 with SCOP figures from MCS Product Database
  • 2024-06-03 Added Octopus Cosy 6 with SCOP figures from MCS Product Database
  • 2024-06-10 Remove inconsistent standard in favour of 3rd party MCS correlation for SCOP accuracy, devices re-ordered respectively
  • 2024-12-11 Added Sound Power LEvel (dBa) + add Stiebel Eltron
  • 2024-12-12 Added MCS figures for Bosch CS5800iAW 5Kw and LG Therma V 9Kw
  • 2025-03 Preliminary entry of Wonderwall DR-HP-006-UK
]]>Craig Hutchinsoncroguk-contact@crog.uk