iiinova — where your digital self keeps evolving

Sean Hood @snhd.co · 26/06/2026

Yes! It's working nicely. Some anecdata in my thread over here: hachyderm.io/@seanhood/11... The more open-plan the space, the better it'll work I'm finding. I've had more success downstairs than upstairs.

hachyderm.io

Sean Hood (@seanhood@hachyderm.io)

Update II: My Midea Portasplit (12k) arrived! And it's working well to drop the temps. Got down to 21c in kitchen and 23c in living room. Outside in the shade being 30c. Out of the front vent it's l...

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Sean Hood @snhd.co · 23/06/2026

Yup, I'd love to see examples of external shades that don't look out of place on a 1930's double height bay window. That said, I do like the look of the bright yellow sail shades which Harry Paticas put on his retrofit: www.passivhaustrust.org.uk/projects/det...

passivhaustrust.org.uk

Project Gallery

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Sean Hood @snhd.co · 22/06/2026

I literally ordered one of these today, unsure when it will arrive (I suspect after this weeks weather) but I can let you know how it goes

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Sean Hood @snhd.co · 28/05/2026

This series is one of my faves. Felt like we got more behind the scenes at the reunion too.

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Ky @ky.fyi · 24/04/2026

I wrote about why I quit my job, and how weird and tiring tech feels these days.

ky.fyi

Do I belong in tech anymore?

On quitting, the spread of AI, and the loss of an ideal.

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Sean Hood @snhd.co · 14/04/2026

I'm probably one of a few who'd go to a conference talk about this

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Dave @isntdave.bsky.social · 11/04/2026

THREE TUNNOCKS TEACAKES

Integrity lander is suspended from three red and white striped parachutes

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Hazel Weakly @hazelweakly.me · 31/03/2026

I’ve posted it before, but it feels evergreen The two hardest problems in Computer Science are 1. Human communication 2. Getting people in tech to believe that human communication is important

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Sean Hood @snhd.co · 20/03/2026

It was daft not to..., they went out of stock (from 99 avail) to vanished from the site in <5 days.

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Sean Hood @snhd.co · 15/03/2026

I just picked up one from EcoFlow for £95 anticipating this news. And that’s pretty much it. Sub £300 for 1kWp of panel but 800Wp output to grid. Could pay for itself in less than a year.

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Sean Hood @snhd.co · 15/03/2026

I’m seeing 505w panels for £78 locally (@ City Plumbing). Seems daft not to?

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Sean Hood @snhd.co · 09/03/2026

I took at look on Wayback Machine and the latest snapshot from November 2025 doesn't mention it either. Although they did state it wasn't an exhaustive list.

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Sean Hood @snhd.co · 18/02/2026

Nokia 5110(?) (Something like this was my first in ~2002/3) Nokia 6310i Nokia N95 Nokia C5 (Left in a lorry while hitchhiking in 2012) HTC ? iPhone 5 (Bought when I got my first proper job) iPhone 6 iPhone 8 Pro iPhone 13 Pro

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Katie Fenn @katiefenn.bsky.social · 17/02/2026

I really, really love Look Mum No Computer. I own quite a lot of his vinyl. I’m really disappointed he’s standing while the boycott is happening. www.bbc.co.uk/news/article...

bbc.co.uk

Eurovision 2026: Electronic artist and YouTuber Look Mum No Computer to represent UK in Vienna

The synth artist and Eurovision fan says he finds it

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Sean Hood @snhd.co · 10/02/2026

Not totally knocking them on this, was an awful lot of info in 1h30. That sort of demo would have got my attention too; where did you see that? I wonder where CO2 would place in those reactions? At least since COVID, there's been more awareness of CO2 concentration & can't be masked w/ dehumidifier.

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Sean Hood @snhd.co · 10/02/2026

Worth a watch if you're even vaugely interested in how buildings work, or why (some) new builds are a bit shite. But more importantly why and how we can make things better. 7/7

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Sean Hood @snhd.co · 10/02/2026

Also got a look into how a heat pump works and a trip to the Vaillent factory in Derby where they have been assembling this "controversial" technology. Odd mention at the end that the ASHP is ran on a morning and then again on the evening, generally how you /shouldn't/ run these things. 6/7

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Sean Hood @snhd.co · 10/02/2026

Would have liked to have seen more natural materials used. They visited a factory building modern prefab homes, out of light steel and glued on brick slips. Would have been nice to see the likes of EcoCocon or PH15 instead. 5/7

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Sean Hood @snhd.co · 10/02/2026

MVHR (Mechanical Ventilaton with Heat Recovery) did get a mention but sadly not nearly long enough. They aren't just a tool for managing high humidity but also very good for #AirQuality. 4/7

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Sean Hood @snhd.co · 10/02/2026

An amusing experiment with cups of tea, insulation and a ziplock bag to demonstrate how air tightness can help, but also the problem that comes when you forget ventilation. 3/7

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Sean Hood @snhd.co · 10/02/2026

We got not one but two(!) examples of blower door tests; first on Guy's house and the other on the retrofit house. Love it when the big red door comes out. 2/7

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Sean Hood @snhd.co · 10/02/2026

Really enjoyed that! Bringing good building practices more into the public realm, with a very relatable house: a 1930's semi at the core of the programme being retrofitted to a PassiveHouse standard (#EnerPHit I assume, I forget if that was mentioned). 1/7

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Marianne Heaslip @marianneh.bsky.social · 09/02/2026

So that was decent. Worth finding on catch up if you missed it. Props to Hannah from Progress in Practice for representing women working in retrofit - I promise despite the impression that might have been given, there are a few of us!

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Sean Hood @snhd.co · 09/02/2026

Seeing the bit red door on proper telly got me really excited! (Maybe I need other hobbies)

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Sean Hood @snhd.co · 09/02/2026

Watching "Guy Martin's House Without Bills" on #Channel4. Been looking forward to this!

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Sean Hood @snhd.co · 03/02/2026

Yeah, that does take away from the point somewhat doesn't it? The grift has also settled into a few others in the retrofit/ashp space too which I actively avoid their blogs; sadly because I believe they'd otherwise have a unique perspective, if it was their own voice.

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Sean Hood @snhd.co · 03/02/2026

While watching RTÉ's "Heat my Home", I was wishing that there was going to be a UK equivalent. Seems like Channel4 had read my mind. Not only with a great presenter like Guy Martin, but also @aecb.bsky.social Greater Manchester's local group ran by Progress in Practice Looking forward to watching.

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Sean Hood @snhd.co · 03/02/2026

I have both of Marion's "Residential Retrofit" books, so already knew this would be a good episode, even then it blew me away. Myth busting that low energy buildings require the occupant to "manage" their environment and the "rebound effect" is a non-issue. www.buzzsprout.com/2394957/epis...

buzzsprout.com

Mark talks to Marion Baeli - The Building Podcast

The retro-fit market for domestic homes in the UK is enormous.  We have some of the oldest housing stock in Europe that accounts for 20% of national carbon emissions.  There are 27 million h...

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Scott Riley @scott.is · 03/02/2026

imagine looking up at the vast and harrowing beauty of outer space and thinking not about how short and fleeting and precious our intertwined existence in this realm is but instead ‘wow this place needs some fuckin data centres’

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Sean Hood @snhd.co · 31/01/2026

HPs got a good mention in S1E4 of “George Clarke’s Building Home”, alongside air tightness measures and even MVHR which was nice to see.

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Sean Hood @snhd.co · 23/01/2026

Had an issue with mine in my last house, also in the north, worked for the first couple months then stopped (elec and gas). It’s not a fix but I badgered Bulb enough to take it to the ombudsman and got £75.

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Sean Hood @snhd.co · 19/01/2026

I wonder if there’s any interest at PHI to re-work the macros to work in LibreOffice?

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Katie Fenn @katiefenn.bsky.social · 15/01/2026

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...

bbc.co.uk

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.

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Sean Hood @snhd.co · 15/01/2026

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.

m.youtube.com

INSULATING MORE DOESN'T ALWAYS MAKE SENSE! - How we built our home using science

YouTube video by The Restoration Couple

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Sean Hood @snhd.co · 15/01/2026

Imagine how much we could get done in this country if we just did the job properly the first time, rather than having to do the same job twice because of corner cutting. I guess in this instance, it was the lack of corner cutting, heh

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Sean Hood @snhd.co · 15/01/2026

@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?

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Sean Hood @snhd.co · 07/01/2026

Yeah, end of Monday I bumped the flow temp up as it wasn't quite hitting a comfortable temp. Then yesterday I tried to bump up in small increments to hone in on a more exact match between flow temp and what the house needs to maintain ~20c. Sadly 10yo gas combi which only has manual controls.

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Chris Baraniuk @chrisbaraniuk.com · 07/01/2026

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.

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Sean Hood @snhd.co · 07/01/2026

Mine for Mon (76kWh) + Tue (83kWh). I don't think my boiler likes being ran so low. And my (mostly K1) radiators don't have enough output to match my calculated heatloss at -3c.

Chart for 5th Jan showing Boiler: Flow, Return, DHW, Mains and outside temps.

Outside starting -2c, then going above 0c.

Flow temps ~45-53c spikey until 7pm when it reaches 70c.
DHW spikes during the day

Chart for 5th Jan showing Boiler: Flow, Return, DHW, Mains and outside temps.

Outside starting -1c, then going above 5c

Flow temps ~45-57c spiky
DHW spikes during the day

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Scott Riley @scott.is · 05/01/2026

people starting the new year with a shiny new substack when @ghost.org is literally right there smdh my head

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Sean Hood @snhd.co · 31/12/2025

The doubling down on authoritarianism, the TERFiness and the supporting countries doing a genocide also come to mind.

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Sean Hood @snhd.co · 28/12/2025

I think eBay for me. I get the macOS pop up for it and the 1Password one too. I’m like “Did I ask?!?!”. Infuriating

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Sean Hood @snhd.co · 24/12/2025

Do you have measurements of CO2 and Humidity before and after fitting your MVHR?

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Sean Hood @snhd.co · 22/12/2025

Okay, back on with the wall! Finally insulation time. The shape is kinda L shaped so this required the use of crow bars. A small piece fitted behind the studs, and with some of the off cuts squished inside of a tiny void.

Wood fibre insulation on the cutting board. Speed square, wood off cut as a straight edge, pencil, ruler and saw.

The first piece of wood fibre cut and needed to fit in the space below. Pictured on top of the floor joists

Wood fibre insulation in place in the L shaped area.

Small channel ~10-20mm wide stuffed with some of the off cuts. It all helps right?

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Sean Hood @snhd.co · 16/12/2025

They're missing the obvious 🟨🦆too

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Sean Hood @snhd.co · 12/12/2025

I think my parents have all 3…

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