Glyn Hudson
@glynhudson.bsky.social
Co-founder of @openenergymon, passionate about energy transition and low carbon travel. Love rock climbing, cycling & outdoor adventures, 9yrs #FlightFree https://openenergymonitor.org https://heatpumpmonitor.org https://zerocarbonadventures.co.uk/
Reposted by Glyn Hudson
Really great to see this work on how good heat pump installs can be. An average seasonal performance factor (sCOP) of 3.9 beats gas on running costs, even in the UK where the price ratio between gas and electricity is so bad.
NEW RESEARCH: UK heat pumps can perform far better than many think.
Our analysis of HeatPumpMonitor.org data shows well-designed systems achieve ~40% higher efficiency than past trials (SCoP 3.86 vs 2.81), cutting bills (~£224/yr) and emissions.
Open access: www.sciencedirect.com/science/arti...
Our analysis of HeatPumpMonitor.org data shows well-designed systems achieve ~40% higher efficiency than past trials (SCoP 3.86 vs 2.81), cutting bills (~£224/yr) and emissions.
Open access: www.sciencedirect.com/science/arti...
December 18, 2025 at 7:08 PM
Really great to see this work on how good heat pump installs can be. An average seasonal performance factor (sCOP) of 3.9 beats gas on running costs, even in the UK where the price ratio between gas and electricity is so bad.
It's been great to be part of this project with @janrosenow.bsky.social @trystanlea.bsky.social to share the results from HeatpumpMonitor.org @openenergymon.bsky.social in a peer-reviewed paper 🥳
The overall highlighted HP performance is testament to the work of excellent installers 👏 🎉
The overall highlighted HP performance is testament to the work of excellent installers 👏 🎉
December 18, 2025 at 1:54 PM
It's been great to be part of this project with @janrosenow.bsky.social @trystanlea.bsky.social to share the results from HeatpumpMonitor.org @openenergymon.bsky.social in a peer-reviewed paper 🥳
The overall highlighted HP performance is testament to the work of excellent installers 👏 🎉
The overall highlighted HP performance is testament to the work of excellent installers 👏 🎉
This has also been the result of the analysis of the data from @openenergymon.bsky.social Heatpumpmonitor.org youtu.be/SiHtzDNWAo4?...
December 15, 2025 at 7:21 PM
This has also been the result of the analysis of the data from @openenergymon.bsky.social Heatpumpmonitor.org youtu.be/SiHtzDNWAo4?...
Reposted by Glyn Hudson
A must watch for anyone thinking of getting a heat pump for their older home.
Fantastic to see another @glynhudson.bsky.social project swapping an old oil 🔥 boiler for a super efficient and clean heat pump ⚡
www.youtube.com/watch?v=Tz0W...
Fantastic to see another @glynhudson.bsky.social project swapping an old oil 🔥 boiler for a super efficient and clean heat pump ⚡
www.youtube.com/watch?v=Tz0W...
Installing a SCOP 5 Heat Pump in My House - Design, Install & Monitoring
YouTube video by Glyn Hudson
www.youtube.com
December 4, 2025 at 7:32 AM
A must watch for anyone thinking of getting a heat pump for their older home.
Fantastic to see another @glynhudson.bsky.social project swapping an old oil 🔥 boiler for a super efficient and clean heat pump ⚡
www.youtube.com/watch?v=Tz0W...
Fantastic to see another @glynhudson.bsky.social project swapping an old oil 🔥 boiler for a super efficient and clean heat pump ⚡
www.youtube.com/watch?v=Tz0W...
Reposted by Glyn Hudson
Just came across this presentation by @glynhudson.bsky.social of heat pump performance monitoring comparing self monitored installs with those on electricification of heat trial - great insight into what makes heat pumps perform well, and how to fix systems that don't
www.youtube.com/watch?v=SiHt...
www.youtube.com/watch?v=SiHt...
Optimising Heat Pump Performance: Insights from HeatPumpMonitor Data
YouTube video by OpenEnergyMonitor
www.youtube.com
November 27, 2025 at 2:23 PM
Just came across this presentation by @glynhudson.bsky.social of heat pump performance monitoring comparing self monitored installs with those on electricification of heat trial - great insight into what makes heat pumps perform well, and how to fix systems that don't
www.youtube.com/watch?v=SiHt...
www.youtube.com/watch?v=SiHt...
I've finally finished editing the video of my heat pump installation, there's now some cold weather monitoring data to talk about, TLDR It's working very well, 50% cost saving compared to gas 😃 youtu.be/Tz0W9xCBxS0
Installing a SCOP 5 Heat Pump in My House - Design, Install & Monitoring
YouTube video by Glyn Hudson
youtu.be
December 4, 2025 at 2:33 PM
I've finally finished editing the video of my heat pump installation, there's now some cold weather monitoring data to talk about, TLDR It's working very well, 50% cost saving compared to gas 😃 youtu.be/Tz0W9xCBxS0
Can you help?
Do you have a heat pump on HeatPumpMonitor.org? If so, we need your help to compile real-world maximum output test data. Watch the video below for how to contribute. There should be some cold temperatures tonight and tomorrow. Thanks! ❄️ 🤞
November 19, 2025 at 6:40 PM
Can you help?
Reposted by Glyn Hudson
Do you have a heat pump on HeatPumpMonitor.org? If so, we need your help to compile real-world maximum output test data. Watch the video below for how to contribute. There should be some cold temperatures tonight and tomorrow. Thanks! ❄️ 🤞
November 19, 2025 at 6:39 PM
Do you have a heat pump on HeatPumpMonitor.org? If so, we need your help to compile real-world maximum output test data. Watch the video below for how to contribute. There should be some cold temperatures tonight and tomorrow. Thanks! ❄️ 🤞
📸 New Feature: heatpumpmonitor.org now supports uploading photos of systems 😃
November 13, 2025 at 1:29 PM
📸 New Feature: heatpumpmonitor.org now supports uploading photos of systems 😃
Reposted by Glyn Hudson
We often forget how far we have come: Today almost 3/4 of EU electricity generation is from non-fossil energy sources.
It is not long ago that fossil fuels dominated the EU's electricity mix.
This year their share is approaching 1/4 of EU electricity generation.
Source is @ember-energy.org
It is not long ago that fossil fuels dominated the EU's electricity mix.
This year their share is approaching 1/4 of EU electricity generation.
Source is @ember-energy.org
November 7, 2025 at 2:19 PM
We often forget how far we have come: Today almost 3/4 of EU electricity generation is from non-fossil energy sources.
It is not long ago that fossil fuels dominated the EU's electricity mix.
This year their share is approaching 1/4 of EU electricity generation.
Source is @ember-energy.org
It is not long ago that fossil fuels dominated the EU's electricity mix.
This year their share is approaching 1/4 of EU electricity generation.
Source is @ember-energy.org
What makes a heat pump install efficient? 📈
I presented the data-backed insights from @openenergymon.bsky.social heatpumpmonitor.org at a recent CarbonTrust webinar.
Watch the recording: youtu.be/C16nBd85XOM?...
I presented the data-backed insights from @openenergymon.bsky.social heatpumpmonitor.org at a recent CarbonTrust webinar.
Watch the recording: youtu.be/C16nBd85XOM?...
HeatpumpMonitor.org - Heat Pump Performance Data
An open-source initiative to share and compare heat pump performance data. Join our community of heat pump owners sharing real-world performance data.
HeatPumpMonitor.org
November 4, 2025 at 11:54 AM
What makes a heat pump install efficient? 📈
I presented the data-backed insights from @openenergymon.bsky.social heatpumpmonitor.org at a recent CarbonTrust webinar.
Watch the recording: youtu.be/C16nBd85XOM?...
I presented the data-backed insights from @openenergymon.bsky.social heatpumpmonitor.org at a recent CarbonTrust webinar.
Watch the recording: youtu.be/C16nBd85XOM?...
I've just documented in an
@openenergymon.bsky.social
forum post the various methods to read on-board data from the Grant Aerona HP290 heat pump, the data is not very accurate (ignore COP values 😂), but it's still interesting to log community.openenergymonitor.org/t/reading-on...
@openenergymon.bsky.social
forum post the various methods to read on-board data from the Grant Aerona HP290 heat pump, the data is not very accurate (ignore COP values 😂), but it's still interesting to log community.openenergymonitor.org/t/reading-on...
October 20, 2025 at 10:21 AM
I've just documented in an
@openenergymon.bsky.social
forum post the various methods to read on-board data from the Grant Aerona HP290 heat pump, the data is not very accurate (ignore COP values 😂), but it's still interesting to log community.openenergymonitor.org/t/reading-on...
@openenergymon.bsky.social
forum post the various methods to read on-board data from the Grant Aerona HP290 heat pump, the data is not very accurate (ignore COP values 😂), but it's still interesting to log community.openenergymonitor.org/t/reading-on...
I've finally got round to editing a video from our EV camper van trip In January 😅
In this episode, we explore Portugal and experience a very dangerous campsite hookup issue 😬https://youtu.be/n9zQ2Ngftpg
In this episode, we explore Portugal and experience a very dangerous campsite hookup issue 😬https://youtu.be/n9zQ2Ngftpg
October 13, 2025 at 12:29 PM
I've finally got round to editing a video from our EV camper van trip In January 😅
In this episode, we explore Portugal and experience a very dangerous campsite hookup issue 😬https://youtu.be/n9zQ2Ngftpg
In this episode, we explore Portugal and experience a very dangerous campsite hookup issue 😬https://youtu.be/n9zQ2Ngftpg
Well done Isle of Man! I wasn't aware of this, installing fossil heating in new build houses is bonkers
Yes, BUT the Isle of Man banned fossil fuel heating systems for all new buildings.
So they’re not lax about regulations for everything.
So they’re not lax about regulations for everything.
October 11, 2025 at 10:54 PM
Well done Isle of Man! I wasn't aware of this, installing fossil heating in new build houses is bonkers
Reposted by Glyn Hudson
Heat pump monitoring for last 12months via OpenEnergyMon. These 2 visualizations show the hot water and space heating uses as separate charts.
September 17, 2025 at 11:07 AM
Heat pump monitoring for last 12months via OpenEnergyMon. These 2 visualizations show the hot water and space heating uses as separate charts.
It's arrived! Thanks to Mars from Renewable Heating Hub for sending over a copy of his new book. It's a fantastic resource for homeowners considering a heatpump, or trying to optimise an existing system. I'm proud to have contributed in a small way 😀
September 30, 2025 at 10:58 PM
It's arrived! Thanks to Mars from Renewable Heating Hub for sending over a copy of his new book. It's a fantastic resource for homeowners considering a heatpump, or trying to optimise an existing system. I'm proud to have contributed in a small way 😀
There's not many 10-year-old cars with software this good, or 130kW+ charging speeds! The combination of autopilot and free charging make this the best road trip EV, Tesla was so far ahead of other manufacturers back in 2015, it's a shame they've lost their way a bit...
September 13, 2025 at 9:40 AM
There's not many 10-year-old cars with software this good, or 130kW+ charging speeds! The combination of autopilot and free charging make this the best road trip EV, Tesla was so far ahead of other manufacturers back in 2015, it's a shame they've lost their way a bit...
We're on the verge of the heating season in North Wales, temperature is dropping to 11C, my newly installed Grant Aerona 290 heatpump has started trickling some heat in, impressive low modulation of 2.2kW (366W electrical) from this 9kW unit, COP of 5.7 at the moment 👍
September 8, 2025 at 9:07 AM
We're on the verge of the heating season in North Wales, temperature is dropping to 11C, my newly installed Grant Aerona 290 heatpump has started trickling some heat in, impressive low modulation of 2.2kW (366W electrical) from this 9kW unit, COP of 5.7 at the moment 👍
Reposted by Glyn Hudson
Want mass heat pump adoption? Fix the running costs.
The electricity-to-gas price ratio is key. When policy makes electricity artificially expensive, the cleaner choice isn't the cheaper one. It's time to rebalance energy taxes, as this @thecccuk.bsky.social chart highlights.
The electricity-to-gas price ratio is key. When policy makes electricity artificially expensive, the cleaner choice isn't the cheaper one. It's time to rebalance energy taxes, as this @thecccuk.bsky.social chart highlights.
July 18, 2025 at 11:09 AM
Want mass heat pump adoption? Fix the running costs.
The electricity-to-gas price ratio is key. When policy makes electricity artificially expensive, the cleaner choice isn't the cheaper one. It's time to rebalance energy taxes, as this @thecccuk.bsky.social chart highlights.
The electricity-to-gas price ratio is key. When policy makes electricity artificially expensive, the cleaner choice isn't the cheaper one. It's time to rebalance energy taxes, as this @thecccuk.bsky.social chart highlights.
I've finally finished upgrading radiators and filling my space heating circuit, 10 rads and a towel rail have been upgraded, all piped TBOE to maximise output, existing rads were old single panel non convector and in poor condition, but I was able to re-use existing pipework 😃
August 27, 2025 at 11:33 PM
I've finally finished upgrading radiators and filling my space heating circuit, 10 rads and a towel rail have been upgraded, all piped TBOE to maximise output, existing rads were old single panel non convector and in poor condition, but I was able to re-use existing pipework 😃
One of my photos has made it onto the front cover of the new North Wales Rock climbing guidebook! 🥳
August 18, 2025 at 10:01 PM
One of my photos has made it onto the front cover of the new North Wales Rock climbing guidebook! 🥳
Good scenes at The Diamond this week! 🧗🌊
August 5, 2025 at 4:47 PM
Good scenes at The Diamond this week! 🧗🌊
I've just published a LinkedIn post on the design and installation process for my home heat pump 😀 @newarkcylinders.bsky.social @openenergymon.bsky.social www.linkedin.com/pulse/design...
August 2, 2025 at 3:48 PM
I've just published a LinkedIn post on the design and installation process for my home heat pump 😀 @newarkcylinders.bsky.social @openenergymon.bsky.social www.linkedin.com/pulse/design...
I've just got my dad bee hive temperature monitor back up and running, we've got 13 years of almost unbroken data on the @openenergymon.bsky.social Emoncms, it's fascinating how the temperature profile in the hive changes during the year 🐝 emoncms.org/beehive/live
August 2, 2025 at 11:04 AM
I've just got my dad bee hive temperature monitor back up and running, we've got 13 years of almost unbroken data on the @openenergymon.bsky.social Emoncms, it's fascinating how the temperature profile in the hive changes during the year 🐝 emoncms.org/beehive/live