Sean Hood
@snhd.co
Get paid to keep servers happy. Hobby collector: Lazy photographer, gravel rider, cider drinker, home automation tinkerer, VW owner, passivhaus/retrofit enthusiast, lurcher & greyhound owner; not all at the same time.
snhd.co
📍Sheffield, UK
snhd.co
📍Sheffield, UK
Pinned
Do we do #introduction's on the butterfly app? Anyway, I'm Sean, Cloud Engineer/SRE at an EdTech company. Interested in #observability, #containers and the related glue. Based in #Sheffield. Outside of work I dabble in #homeautomation, #photograpy, #cycling, #bouldering and generally being #outdoors
Reposted by Sean Hood
I'm so excited for the Tour de France Femmes coming to Sheffield. I hope they close Snake Pass so we can cycle up there to watch them race.
www.bbc.co.uk/news/article...
www.bbc.co.uk/news/article...
Tour de France Femmes in Yorkshire 'will boost women's cycling'
The start of the annual elite women’s cycling race will take place in Yorkshire.
www.bbc.co.uk
January 15, 2026 at 10:49 PM
I'm so excited for the Tour de France Femmes coming to Sheffield. I hope they close Snake Pass so we can cycle up there to watch them race.
www.bbc.co.uk/news/article...
www.bbc.co.uk/news/article...
DIYers bringing #PassiveHouse to the masses? youtube.com/watch?v=v854...
Absolutely loved this. So refreshing to hear people talk about this sorta stuff, in such depth, when they aren’t in the trade. Hopefully it might teach others to not to build crap leaky buildings with PIR. I can only hope.
Absolutely loved this. So refreshing to hear people talk about this sorta stuff, in such depth, when they aren’t in the trade. Hopefully it might teach others to not to build crap leaky buildings with PIR. I can only hope.
INSULATING MORE DOESN'T ALWAYS MAKE SENSE! - How we built our home using science
YouTube video by The Restoration Couple
m.youtube.com
January 15, 2026 at 9:47 PM
DIYers bringing #PassiveHouse to the masses? youtube.com/watch?v=v854...
Absolutely loved this. So refreshing to hear people talk about this sorta stuff, in such depth, when they aren’t in the trade. Hopefully it might teach others to not to build crap leaky buildings with PIR. I can only hope.
Absolutely loved this. So refreshing to hear people talk about this sorta stuff, in such depth, when they aren’t in the trade. Hopefully it might teach others to not to build crap leaky buildings with PIR. I can only hope.
@benadamsmith.bsky.social Catching up with HPH over Christmas; sad to hear The Hub is no more. I was just thinking about joining too, as after listening to so many eps, I recently figured self-build is for me in the future. My question is: could the resources& case studies be available as a one off?
January 15, 2026 at 10:27 AM
@benadamsmith.bsky.social Catching up with HPH over Christmas; sad to hear The Hub is no more. I was just thinking about joining too, as after listening to so many eps, I recently figured self-build is for me in the future. My question is: could the resources& case studies be available as a one off?
Reposted by Sean Hood
It's been COLD. What flow temperatures are you folks using? (And for oil / gas / heat pump, or what? And to achieve what room temp?)
Currently still working fine at 45C here in Belfast, gas combi, 19-20C target room temp.
Currently still working fine at 45C here in Belfast, gas combi, 19-20C target room temp.
January 7, 2026 at 8:44 AM
It's been COLD. What flow temperatures are you folks using? (And for oil / gas / heat pump, or what? And to achieve what room temp?)
Currently still working fine at 45C here in Belfast, gas combi, 19-20C target room temp.
Currently still working fine at 45C here in Belfast, gas combi, 19-20C target room temp.
Reposted by Sean Hood
people starting the new year with a shiny new substack when @ghost.org is literally right there smdh my head
January 5, 2026 at 3:31 PM
people starting the new year with a shiny new substack when @ghost.org is literally right there smdh my head
Reposted by Sean Hood
I just posted some (a lot of?) pictures from my cycling trip through the length of Japan on my blog. sebastiandahl.com/blog/2025124...
#japancyclingnavigator #bikepacking #cycletouring #japan
#japancyclingnavigator #bikepacking #cycletouring #japan
Cycling the length of Japan — Sébastian Dahl
Marie and I spent 3 months in Japan this summer. It’s hard to summarise such a long trip in such an interesting country, but here goes an attempt. Planning the trip started more than a year before. ...
sebastiandahl.com
December 8, 2025 at 10:07 AM
I just posted some (a lot of?) pictures from my cycling trip through the length of Japan on my blog. sebastiandahl.com/blog/2025124...
#japancyclingnavigator #bikepacking #cycletouring #japan
#japancyclingnavigator #bikepacking #cycletouring #japan
Got my work cut out for the weekend. Bedroom bay window is a stud wall filled with brick off cuts. To be insulated with 160mm of the finest German made woodfibre. New book for if I get bored too. More details in alt text.
Current U-value is ~2.1W/(m²K), will be ~0.22W/(m²K)
#retrofit #aecb
Current U-value is ~2.1W/(m²K), will be ~0.22W/(m²K)
#retrofit #aecb
December 3, 2025 at 10:50 PM
Reposted by Sean Hood
Good.
George Clarke wants homeowners and businesses to shun ‘dishonest’ firms Arconic, Kingspan and Celotex
www.theguardian.com/uk-news/2025...
George Clarke wants homeowners and businesses to shun ‘dishonest’ firms Arconic, Kingspan and Celotex
www.theguardian.com/uk-news/2025...
Architect George Clarke calls for boycott of firms criticised by Grenfell inquiry
TV personality wants homeowners and businesses to shun ‘dishonest’ firms Arconic, Kingspan and Celotex
www.theguardian.com
November 23, 2025 at 7:09 PM
Good.
George Clarke wants homeowners and businesses to shun ‘dishonest’ firms Arconic, Kingspan and Celotex
www.theguardian.com/uk-news/2025...
George Clarke wants homeowners and businesses to shun ‘dishonest’ firms Arconic, Kingspan and Celotex
www.theguardian.com/uk-news/2025...
Reposted by Sean Hood
There’s some very bad news hidden in the Ofgem price cap for January announced yesterday: the electricity to gas price ratio has jumped to 4.67, its highest level since before the energy crisis.
This is a big barrier to households adopting heat pumps in Britain, and threatens our climate goals
This is a big barrier to households adopting heat pumps in Britain, and threatens our climate goals
November 22, 2025 at 7:51 AM
There’s some very bad news hidden in the Ofgem price cap for January announced yesterday: the electricity to gas price ratio has jumped to 4.67, its highest level since before the energy crisis.
This is a big barrier to households adopting heat pumps in Britain, and threatens our climate goals
This is a big barrier to households adopting heat pumps in Britain, and threatens our climate goals
Saw a video yesterday, someone talking about new Vaillant aroTHERM Plus #ashp : www.vaillant-group.com/news-stories...
Distance req either side reduced: 100cm to 50cm
Sound level (5kW): 51dB(A) to 44.3dB(A)
Data: www.vaillant.de/heizung/prod...
The video: www.youtube.com/watch?v=Czwk...
Distance req either side reduced: 100cm to 50cm
Sound level (5kW): 51dB(A) to 44.3dB(A)
Data: www.vaillant.de/heizung/prod...
The video: www.youtube.com/watch?v=Czwk...
New aroTHERM plus heat pump: More efficient, quieter, and flexible installation options
New aroTHERM plus heat pump: More efficient, quieter, and flexible installation options
www.vaillant-group.com
November 19, 2025 at 10:05 AM
Saw a video yesterday, someone talking about new Vaillant aroTHERM Plus #ashp : www.vaillant-group.com/news-stories...
Distance req either side reduced: 100cm to 50cm
Sound level (5kW): 51dB(A) to 44.3dB(A)
Data: www.vaillant.de/heizung/prod...
The video: www.youtube.com/watch?v=Czwk...
Distance req either side reduced: 100cm to 50cm
Sound level (5kW): 51dB(A) to 44.3dB(A)
Data: www.vaillant.de/heizung/prod...
The video: www.youtube.com/watch?v=Czwk...
@archtesta.bsky.social Good to chat to you at the Homebuilding show! ubakus.de was the site I mentioned, and this was the data I got about phase shift: bsky.app/profile/snhd... PIR was even worse than my memory served at 6.5hr. Not a replacement for WUFI but feels useful for a layperson.
November 2, 2025 at 2:57 PM
@archtesta.bsky.social Good to chat to you at the Homebuilding show! ubakus.de was the site I mentioned, and this was the data I got about phase shift: bsky.app/profile/snhd... PIR was even worse than my memory served at 6.5hr. Not a replacement for WUFI but feels useful for a layperson.
Wishing wood fibre insulation was as readily available in the UK as it was in France (this was at Brico Depot). This is something I should be able to buy from B&Q or Wickes not limited to specialist suppliers where postage is 3x the item price in some cases.
#retrofit
#retrofit
October 27, 2025 at 10:17 AM
Wishing wood fibre insulation was as readily available in the UK as it was in France (this was at Brico Depot). This is something I should be able to buy from B&Q or Wickes not limited to specialist suppliers where postage is 3x the item price in some cases.
#retrofit
#retrofit
Reposted by Sean Hood
Just starting your self build journey? I recommend listening to this podcast first. Andy Mitchell from 21 Degrees outlines the challenges of finding a healthy, comfortable and energy-efficient home. And he explains it all in simple language!
www.houseplanninghelp.com/andymitchell
#SelfBuild
www.houseplanninghelp.com/andymitchell
#SelfBuild
October 7, 2025 at 10:20 AM
Just starting your self build journey? I recommend listening to this podcast first. Andy Mitchell from 21 Degrees outlines the challenges of finding a healthy, comfortable and energy-efficient home. And he explains it all in simple language!
www.houseplanninghelp.com/andymitchell
#SelfBuild
www.houseplanninghelp.com/andymitchell
#SelfBuild
Reposted by Sean Hood
"If it takes longer to make your coffee than it does for you build pipeline to complete, you're doing one of them wrong"
- @abangser.bsky.social
- @abangser.bsky.social
October 4, 2025 at 9:17 AM
"If it takes longer to make your coffee than it does for you build pipeline to complete, you're doing one of them wrong"
- @abangser.bsky.social
- @abangser.bsky.social
A good day to re-read this post: charity.wtf/2019/05/01/f...
Friday Deploy Freezes Are Exactly Like Murdering Puppies
VOICEOVER: “Previously, on twitter …” So, that happened. I hadn’t seen anyone say something like this in quite a while. I remember saying things like this myself as recentl…
charity.wtf
October 3, 2025 at 11:04 AM
A good day to re-read this post: charity.wtf/2019/05/01/f...
#passivehouse peeps, is the ~new "easyPH" compatible with #PHPP "Variants" worksheet? I see it's there but hidden, and I didn't see a mention in the manual.
Alternatively, is modeling in easyPH then exporting into the full variants sheet an option. NB: not being used for certification just fiddling
Alternatively, is modeling in easyPH then exporting into the full variants sheet an option. NB: not being used for certification just fiddling
September 15, 2025 at 3:49 PM
#passivehouse peeps, is the ~new "easyPH" compatible with #PHPP "Variants" worksheet? I see it's there but hidden, and I didn't see a mention in the manual.
Alternatively, is modeling in easyPH then exporting into the full variants sheet an option. NB: not being used for certification just fiddling
Alternatively, is modeling in easyPH then exporting into the full variants sheet an option. NB: not being used for certification just fiddling
PassiveHouse peeps, is the ~new "easyPH" comptatible with #PHPP "Variants" worksheet? I see it's there but hidden, and I didn't see a mention in the manual.
September 13, 2025 at 3:55 PM
PassiveHouse peeps, is the ~new "easyPH" comptatible with #PHPP "Variants" worksheet? I see it's there but hidden, and I didn't see a mention in the manual.
Spent an evening in Walkley at an SY Ecofit event. Chatting all things retrofit, insulation, moisture in buildings and also enjoyed this lovely curry.
#sheffield #retrofit
#sheffield #retrofit
September 9, 2025 at 9:49 PM
Spent an evening in Walkley at an SY Ecofit event. Chatting all things retrofit, insulation, moisture in buildings and also enjoyed this lovely curry.
#sheffield #retrofit
#sheffield #retrofit
Read this book at the weekend, would highly recommend to any homeowner, even if you aren’t planning a renovation. I especially liked this little illustration feat ASHP and solar panels.
#retrofit #renovation #mvhr #ashp #passivehouse
#retrofit #renovation #mvhr #ashp #passivehouse
August 19, 2025 at 3:59 PM
Read this book at the weekend, would highly recommend to any homeowner, even if you aren’t planning a renovation. I especially liked this little illustration feat ASHP and solar panels.
#retrofit #renovation #mvhr #ashp #passivehouse
#retrofit #renovation #mvhr #ashp #passivehouse
Reposted by Sean Hood
Papers and magazines for free with your library card! Ask your library if they subscribe.
August 19, 2025 at 6:42 AM
Papers and magazines for free with your library card! Ask your library if they subscribe.
If you're curious about comfortable and well performing housing, I can't recommend this episode enough! An incredibly accessible explanation for such a deep topic. Touches on: why housing is so poor; what the future could be and areas to focus on when improving your current home.
In my latest podcast I'm chatting to the Managing Director of 21 Degrees. He's got a beginner's guide to creating a comfortable home. Expect a bit of physics... but the good news we can do this! Andy explains how.
www.houseplanninghelp.com/hph383-a-beg...
#SelfBuild #Passivhaus #EcoHome
www.houseplanninghelp.com/hph383-a-beg...
#SelfBuild #Passivhaus #EcoHome
August 6, 2025 at 6:19 PM
If you're curious about comfortable and well performing housing, I can't recommend this episode enough! An incredibly accessible explanation for such a deep topic. Touches on: why housing is so poor; what the future could be and areas to focus on when improving your current home.
Looking for examples of people who've done an "AECB Step by Step Retrofit" but struggling to find anything. I know it's somewhat of a new standard and that's likely why. Ideally blog posts or forum posts from homeowners but curious to read anything.
cc @aecb.bsky.social and #passivehouse
cc @aecb.bsky.social and #passivehouse
July 30, 2025 at 9:05 AM
Looking for examples of people who've done an "AECB Step by Step Retrofit" but struggling to find anything. I know it's somewhat of a new standard and that's likely why. Ideally blog posts or forum posts from homeowners but curious to read anything.
cc @aecb.bsky.social and #passivehouse
cc @aecb.bsky.social and #passivehouse