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OpenEnergyMonitor @openenergymon.bsky.social · 06/08/2026

Please let us know what you think?! Feedback is welcome, it's still a work in progress 🤔

Reposted by OpenEnergyMonitor

Glyn Hudson @glynhudson.bsky.social · 05/08/2026

The new @openenergymon.bsky.social HeatPumpMonitor front page is live! 👀🥳 heatpumpmonitor.org It's very exciting to provide more insight to the data on HeatPumpMonitor, this has been a big focus for @trystanlea.bsky.social 👏

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Glyn Hudson @glynhudson.bsky.social · 30/07/2026

It's been 1yr since I installed a Grant HP290 heat pump and @newarkcylinders.bsky.social in my house! 🏠 Space heating SCOP 4.8 🚿 DHW SCOP 4.3 📊 Combined SCOP 4.7 💰 Running cost on Agile with battery: £567/yr 🛢️ Previous oil boiler would cost £2k to deliver same heat (72% saving)

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Newark Cylinders @newarkcylinders.bsky.social · 08/04/2026

DID YOU KNOW: The top 3 DHW performers on @openenergymon.bsky.social right now are all using Newark Cylinders' @heat-geek.bsky.social Super Cylinders. Three different heat pumps, three different installers, 4+ COP across the board newarkcylinders.co.uk/products/hg-...

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Energy Stats UK @energystatsuk.bsky.social · 21/07/2026

New Energy Unwrapped Podcast episode with @glynhudson.bsky.social and @trystanlea.bsky.social from @openenergymon.bsky.social We talk about the history of OEM, heat pump monitor & why monitoring matters. Available on YouTube and audio format wherever you get your podcasts. youtu.be/BjiylCYpx1U

youtu.be

Open Energy Monitor: The Tools Changing UK Energy

YouTube video by Mick Wall (Energy Stats UK)

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OpenEnergyMonitor @openenergymon.bsky.social · 21/05/2026

📌Looking for a heat pump installer with a proven track record of high-efficiency installations? Or are you an installer looking to showcase your work? Check out the HeatPumpMonitor map heatpumpmonitor.org/map?filter=&... 📊 Data from shop.openenergymonitor.com/level-3-heat...

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Glyn Hudson @glynhudson.bsky.social · 04/12/2025

This system has got an @openenergymon.bsky.social Level 3 independent monitoring system installed shop.openenergymonitor.com/level-3-heat...

shop.openenergymonitor.com

Level 3 Heat Pump Monitoring Bundle (emonHP)

Open-source hardware tools for energy monitoring and visualisation

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OpenEnergyMonitor @openenergymon.bsky.social · 19/11/2025

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! ❄️ 🤞

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Glyn Hudson @glynhudson.bsky.social · 13/11/2025

📸 New Feature: heatpumpmonitor.org now supports uploading photos of systems 😃

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Glyn Hudson @glynhudson.bsky.social · 30/04/2025

I really enjoyed recording this podcast, it was great to chat to Gregg about @openenergymon.bsky.social all the other fun stuff e.g heat pumps and EVs 😀 This was recorded at the @fullychargedshow.bsky.social Everything Electric show, which explains why I was losing my voice!

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OpenEnergyMonitor @openenergymon.bsky.social · 30/04/2025

Here's an updated installation video for the emonPi2 and emonTx V5 for electricity monitoring using clip on CT sensors youtu.be/XAJV5zDJF_4

youtu.be

OpenEnergyMonitor Electricity Monitor Installation

YouTube video by OpenEnergyMonitor

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Steve DeVeaux @stevedvo.bsky.social · 09/04/2025

Q1 2025 heat pump stats: Energy in: 2,553 kWh @ 16.87 p/kWh avg Heat out: 8,598 kWh Avg COP: 3.37 Avg cost of heat delivered: 5.01 p/kWh [~31% cheaper than 85% efficient gas boiler @ 6.19p/kWh] Monitoring by @openenergymon.bsky.social My system details here: heatpumpmonitor.org/system/view?...

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Robert Osfield @robertosfield.bsky.social · 18/04/2025

Studies that are already out of date by the time they get into circulation is part of them problem. Live results from @openenergymon.bsky.social for real-world heat-pumps illustrate what is possible, right now: heatpumpmonitor.org We've achieve a COP of 4.1 this week here in rural Scotland.

heatpumpmonitor.org

HeatpumpMonitor.org

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OpenEnergyMonitor @openenergymon.bsky.social · 29/04/2025

We've managed to reduce the price of our popular Level 3 Heat Pump Monitoring Bundle 🥳 - up to 10kW £462 +VAT - up to 17kW £539 + VAT shop.openenergymonitor.com/level-3-heat...

shop.openenergymonitor.com

Level 3 Heat Pump Monitoring Bundle (emonHP)

Open-source hardware tools for energy monitoring and visualisation

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Glyn Hudson @glynhudson.bsky.social · 26/03/2025

30kW SolarEdge PV and 65kWh of GivEnergy Commercial battey system is now up and running, with @openenergymon.bsky.social monitoring 😀

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Glyn Hudson @glynhudson.bsky.social · 04/03/2025

Heat pumps are on site! Our shared office space will soon be heated by 2 x 16kW @viessmanncs.bsky.social ASHPs, of course with @openenergymon.bsky.social monitoring, no more LPG 😀

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Glyn Hudson @glynhudson.bsky.social · 06/03/2025

Proud to have played a small part in this, heat pump monitoring using @openenergymon.bsky.social has resulted in £100/month bill saving 👍

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Glyn Hudson @glynhudson.bsky.social · 26/02/2025

I really enjoyed this episode of the @TransitionShow.mastodon.energy.ap.brid.gy podcast with @richardlowes.bsky.social, thanks for the @openenergymon.bsky.social heatpumpmonitor.org mention, "brings an element of fun into heatpumps" 😁

heatpumpmonitor.org

HeatpumpMonitor.org

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Cllr Mike Sammon @mikesammon.bsky.social · 07/02/2025

I am excited that one of my heat pump installs is now on @openenergymon.bsky.social Simply the best heat pump monitoring software. You can view the live data here. emoncms.org/app/view?nam...

emoncms.org

Emoncms - app view

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Cllr Owen Burbidge 🔶 @oburbidge.bsky.social · 07/02/2025

Agree! To me I think we should all have @openenergymon.bsky.social, MCS should improve the minimum scop from 2.8 to 3.6 and then consumers should have better protection to get installers back to fix problems if they aren’t meeting these standards

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Reposted by OpenEnergyMonitor

Glyn Hudson @glynhudson.bsky.social · 14/02/2025

Here's a video about an interesting ASHP installation I was involved with in a solid stone cottage, the combination of insulation, air tightness, UFH and MVHR has made for a very efficient low-cost heating system with a SCOP of 5.1 for space heating 😀 📈 youtu.be/YouOLThHSNk?...

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Glyn Hudson @glynhudson.bsky.social · 17/02/2025

This is part of a big electrification and decarbonisation project for the building to remove deoendancy on LPG, reduce running costs and increase energy security; this will involve 2x 16kW Viessmann ASHP cascade, 69kWh of GivEnergy storage, 30kW of PV and @openenergymon.bsky.social monitoring 😀

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Energy Stats UK @energystatsuk.bsky.social · 18/02/2025

The Solar, Battery and Heat Pump "Holy Trinity" doing their thing today. It's been pretty chilly outside but the winter sunshine means we are heating the house from the roof. Monitoring by @openenergymon.bsky.social and Home Assistant

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Glyn Hudson @glynhudson.bsky.social · 19/02/2025

This Skill Builder heatpump now one of the best performing systems in the country thanks to a Heat Geek transformation! Here's the live and historic data monitored independently by @openenergymon.bsky.social 👏 heatpumpmonitor.org/system/view?...

heatpumpmonitor.org

HeatpumpMonitor.org

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OpenEnergyMonitor @openenergymon.bsky.social · 04/02/2025

We've added Octopus Cosy and E.ON Next heat pump tariffs to HPM, the combination of smart tariffs and high performing heat pump installation can deliver cost of heat at less than 4p/kWh! 🤯🤑

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Glyn Hudson @glynhudson.bsky.social · 02/02/2025

Interesting podcast about the Electrification Of Heat government heat pump trial results with Katrina Young from @energysyscat.bsky.social and @trystanlea.bsky.social from @openenergymon.bsky.social

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Glyn Hudson @glynhudson.bsky.social · 14/01/2025

For anyone with a heatpump, Agile is usually the best tariff, you can explore the costs of running a heatpump using different tariffs on the @openenergymon.bsky.social Heatpumpmonitor.org cost page 🤓 heatpumpmonitor.org?mode=costs&t...

heatpumpmonitor.org

HeatpumpMonitor.org

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Reposted by OpenEnergyMonitor

Energy Stats UK @energystatsuk.bsky.social · 21/01/2025

New blog post: review of 700 heat pump hot water runs in 2024 5kW Vaillant and 250L Mixergy cylinder Better COP daytime or night? Better COP from empty or from full? energy-stats.uk/a-review-of-... Made possible by @openenergymon.bsky.social

energy-stats.uk

A review of 700 heat pump hot water runs in 2024 | Energy Stats UK

Throughout the whole of 2024 I ran my 5kW Vaillant Arotherm heat pump in Eco hot water mode, heating our 250L Mixergy cylinder in Sheffield.

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Chaos @shed.gay · 06/01/2025

I probably should be doing some freelance admin but instead I've created a map of Heat-Pump installations and their Performance, using data from openstreetmap and @openenergymon.bsky.social johnr24.github.io/heatpump/

johnr24.github.io

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Glyn Hudson @glynhudson.bsky.social · 08/01/2025

Excellent podcast, really enjoyed listening to @zarch1972.bsky.social recount his home electrification journey, thanks for the @openenergymon.bsky.social mentions! 🙏🤓

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OpenEnergyMonitor @openenergymon.bsky.social · 05/12/2024

We've built a heating system test rig in our office to test heat meters! The results of the testing are detailed by @trystanlea.bsky.social in this forum post, TLDR on average expect no more than ±0.1 COP variation 😀 community.openenergymonitor.org/t/heat-meter...

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Jeff Colley @jeffcolley.bsky.social · 22/11/2024

Test results are one thing, but how do heat pumps work in reality? Really well in most cases, according to the live heat pump performance data on www.heatpumpmonitor.org, a website from the good folks at @openenergymon.bsky.social.

heatpumpmonitor.org

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Alex Braun @elbraunio.bsky.social · 23/11/2024

I've been able to use @openenergymon.bsky.social to optimise the performance of my newly installed Ecodan 8.5kW during its first winter. Ecodan Auto Adaptive proving to produce better performance compared to pure weather comp during similar outside conditions.

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Helen K Jeffrey @imhelenj.bsky.social · 23/11/2024

I'm using the Visit a Heat-pump website to go and see one with @openenergymon.bsky.social monitoring. Hoping to find a local person to add it to our system. #heatpumps #ashp @nestauk.bsky.social

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Timbones @timbones.bsky.social · 23/11/2024

Houses with solid walls and a heat pump manage quite well. Data collected by @openenergymon.bsky.social for last 30 days shows average COP of 4.1. heatpumpmonitor.org?filter=solid... bsky.app/profile/el-c...

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Cllr Owen Burbidge 🔶 @oburbidge.bsky.social · 24/11/2024

Amazing! I hope you enjoy (and do report back!) I wish it were mandatory to have proper reporting on. The learnings i got from seeing other installs on @openenergymon.bsky.social helped me realise our system was installed like garbage

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OpenEnergyMonitor @openenergymon.bsky.social · 04/12/2024

Congratulations to @nandotolboom.bsky.social for submitting the first Dutch heat pump to HPM! 🇳🇱😀

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Glyn Hudson @glynhudson.bsky.social · 04/12/2024

Really enjoyed chatting to @betatalk.bsky.social about what we're learning about heat pumps with the data from @openenergymon.bsky.social HeatPumpMonitorm, we now have 339 systems connected with MID metering 🤓📈https://heatpumpmonitor.org/

heatpumpmonitor.org

HeatpumpMonitor.org

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Chris Baraniuk @chrisbaraniuk.com · 19/11/2024

Heat pump starter pack just dropped. go.bsky.app/KCLxmj9

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Glyn Hudson @glynhudson.bsky.social · 20/11/2024

Our Samsung heat pump is half the running cost of our existing LPG combi boiler, here's an update video I made last year www.youtube.com/watch?v=kkNx...

youtube.com

Air Source Heat Pump 1st Winter Performance 2022-23 in Solid Stone Welsh Cottage

YouTube video by Glyn Hudson

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Glyn Hudson @glynhudson.bsky.social · 20/11/2024

Winter has arrived! It's below freeing outside and heat pump is keeping our solid stone Welsh cottage toasty warm 😀

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Glyn Hudson @glynhudson.bsky.social · 21/11/2024

This evening I've been doing some max output testing with a Vaillant 5kW ASHP, at 0C with 45C flow Vaillant claim an output of 6.6kW is possible, however in real world taking into account defrosts it only managed to output 5.3kW, which is 80% of the stated output

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Trystan Lea @trystanlea.bsky.social · 09/11/2024

How well can heat pumps work when designed, installed and commissioned well? This is one of the main questions we are exploring with HeatpumpMonitor.org. There are now 64 systems with a year of data, averaging an SPF H4 of 3.9. Feel free to explore the data for each system on the site 🤓

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Dominic McCann @zapaman.bsky.social · 15/09/2024

1980s bungalow winter heat pump performance - thanks Glyn Hudson www.youtube.com/watch?v=3dzk...

youtube.com

1890's Bungalow Winter Heat Pump Performance Update

YouTube video by Glyn Hudson

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Trystan Lea @trystanlea.bsky.social · 13/09/2024

How well can heat pumps work when designed, installed and commissioned well? This is one of the main questions we are exploring with HeatpumpMonitor.org. There are now 36 systems with a full year of data, averaging an SPF H4 of 3.9. Feel free to explore the data for each system on the site 🤓

A screenshot of the heatpumpmonitor website

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