# Uncategorized **URL:** https://community.carbon.coop/c/uncategorized/1.md [Latest](https://community.carbon.coop/latest.md) · [Categories](https://community.carbon.coop/categories.md) --- ## [Welcome to the Carbon Co-op Community!](https://community.carbon.coop/t/welcome-to-the-carbon-co-op-community/7)
**Author:** [@system](https://community.carbon.coop/u/system)\ **Replies:** 0\ **Last updated:** [5 October 2020 10:07 UTC](https://community.carbon.coop/t/welcome-to-the-carbon-co-op-community/7 "2020-10-05T10:07:35Z")
Our community is all about developing new, practical ways for people to work together to tackle climate change in their homes and communities. We want to hear from everyone, whatever your level of experience, area of in… --- ## [Member volunteer appeal - for event in Levenshulme 1st Aug!](https://community.carbon.coop/t/member-volunteer-appeal-for-event-in-levenshulme-1st-aug/1189)
**Author:** [@Lorenza\_Casini1](https://community.carbon.coop/u/Lorenza_Casini1)\ **Replies:** 2\ **Last updated:** [23 July 2026 08:41 UTC](https://community.carbon.coop/t/member-volunteer-appeal-for-event-in-levenshulme-1st-aug/1189 "2026-07-23T08:41:30Z")
Hello! We are looking for a Carbon Co-op member volunteer support (x1 adult) for an upcoming community event in Levenshulme on the 1st of August. Fit Fest, a free community event celebrating health, fitness and wellb… --- ## [Interesting reference documents](https://community.carbon.coop/t/interesting-reference-documents/789)
**Author:** [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\ **Replies:** 38\ **Last updated:** [30 June 2026 13:21 UTC](https://community.carbon.coop/t/interesting-reference-documents/789 "2026-06-30T13:21:03Z")
Rather than mix up with free courses I thought I’d start a thread for reference documents. If I knew how I would set it up as a Wiki, so that posts could be updated in some sort of order but we will have to make do with… --- ## [Carbon Co-op AGM 2026](https://community.carbon.coop/t/carbon-co-op-agm-2026/1186)
**Author:** [@mattfranklin](https://community.carbon.coop/u/mattfranklin)\ **Replies:** 1\ **Last updated:** [17 June 2026 13:03 UTC](https://community.carbon.coop/t/carbon-co-op-agm-2026/1186 "2026-06-17T13:03:32Z")
Carbon Co-ops 2026 Annual General Meeting, where members have the opportunity to run for board election and steer the democratic direction of Carbon Co-op. Hi everyone, It’s that time of year again—our Annual General … --- ## [MVHR. What to look for when buying one/fitting one](https://community.carbon.coop/t/mvhr-what-to-look-for-when-buying-one-fitting-one/1147)
**Author:** [@davemanby](https://community.carbon.coop/u/davemanby)\ **Replies:** 7\ **Last updated:** [23 May 2026 12:07 UTC](https://community.carbon.coop/t/mvhr-what-to-look-for-when-buying-one-fitting-one/1147 "2026-05-23T12:07:09Z")
One of the often unsold advantages of a MVHR system is the quality of air in your house, because all the air coming into your house is filtered you have far less of the general grime floating around in the atmosphere in … --- ## [Solar Panels on balcony](https://community.carbon.coop/t/solar-panels-on-balcony/1170)
**Author:** [@Wendy\_Cocks](https://community.carbon.coop/u/Wendy_Cocks)\ **Replies:** 3\ **Last updated:** [18 April 2026 17:25 UTC](https://community.carbon.coop/t/solar-panels-on-balcony/1170 "2026-04-18T17:25:26Z")
Looking to downsize to an apartment with a balcony and wondering if solar panels can be installed on a balcony. Any thoughts? --- ## [Creating a single room thermal envelope](https://community.carbon.coop/t/creating-a-single-room-thermal-envelope/736)
**Author:** [@pottyone72](https://community.carbon.coop/u/pottyone72)\ **Replies:** 37\ **Last updated:** [21 March 2026 10:22 UTC](https://community.carbon.coop/t/creating-a-single-room-thermal-envelope/736 "2026-03-21T10:22:14Z")
We currently have one very problematic bedroom. It’s SE facing and has two cold solid brick walls and a very leaky UPV window. This room is either uncomfortably hot, freezing cold or damp. Looking at the problems, we h… --- ## [Energy efficiency measures in the latest Middle East crisis](https://community.carbon.coop/t/energy-efficiency-measures-in-the-latest-middle-east-crisis/1159)
**Author:** [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\ **Replies:** 6\ **Last updated:** [19 March 2026 09:40 UTC](https://community.carbon.coop/t/energy-efficiency-measures-in-the-latest-middle-east-crisis/1159 "2026-03-19T09:40:03Z")
Whatever your views on Trump or the Islamic Republic of Iran it is clear that another fossil fuel crisis is upon us. Gas costs up 50% in 36 hours. Congratulations to every one that has managed to limit or even stop thei… --- ## [National Planning Policy Framework (NPPF) Consultation](https://community.carbon.coop/t/national-planning-policy-framework-nppf-consultation/1156)
**Author:** [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\ **Replies:** 0\ **Last updated:** [24 February 2026 18:28 UTC](https://community.carbon.coop/t/national-planning-policy-framework-nppf-consultation/1156 "2026-02-24T18:28:04Z")
The Minister for Miserable Housing Standards and Maximising Fossil Fuel Use (not his official title!) has issued a consultation on a policy document which includes a section banning local authorities from having stricter… --- ## [Will a Heat Pump 'Charge' a Heat Battery?](https://community.carbon.coop/t/will-a-heat-pump-charge-a-heat-battery/1059)
**Author:** [@mike\_killian](https://community.carbon.coop/u/mike_killian)\ **Replies:** 8\ **Last updated:** [19 February 2026 16:05 UTC](https://community.carbon.coop/t/will-a-heat-pump-charge-a-heat-battery/1059 "2026-02-19T16:05:36Z")
I’m told that many heat pumps nowadays can reach water- heating temps of around 65deg required to ‘charge’ a heat battery, ie to bring about the ‘melting’ of the phase-change material in the battery. Does anyone have exp… --- ## [Internal insulation narrow door frames](https://community.carbon.coop/t/internal-insulation-narrow-door-frames/1013)
**Author:** [@Jo\_Farrington](https://community.carbon.coop/u/Jo_Farrington)\ **Replies:** 22\ **Last updated:** [16 February 2026 17:26 UTC](https://community.carbon.coop/t/internal-insulation-narrow-door-frames/1013 "2026-02-16T17:26:43Z")
Hi, I am installing an inward opening new front door where the opening is the same width as the hallway. So the existing plasterwork is around 14mm. The architect has specified 37.5mm insulated plasterboard. So if this … --- ## [Airfi MVHR vs Comfo air and Zehnder](https://community.carbon.coop/t/airfi-mvhr-vs-comfo-air-and-zehnder/987)
**Author:** [@Jo\_Farrington](https://community.carbon.coop/u/Jo_Farrington)\ **Replies:** 16\ **Last updated:** [16 February 2026 12:46 UTC](https://community.carbon.coop/t/airfi-mvhr-vs-comfo-air-and-zehnder/987 "2026-02-16T12:46:21Z")
I am planning to install MVHR in my bungalow - 80 sq m on the ground floor and another 40 in what will be the converted loft. I had a quote from 21degrees had previously mentioned Comfoair Q 350 which they said looks li… --- ## [Experience with Aereco advice and installations](https://community.carbon.coop/t/experience-with-aereco-advice-and-installations/1116)
**Author:** [@Julian\_Tomlin](https://community.carbon.coop/u/Julian_Tomlin)\ **Replies:** 1\ **Last updated:** [12 December 2025 09:05 UTC](https://community.carbon.coop/t/experience-with-aereco-advice-and-installations/1116 "2025-12-12T09:05:50Z")
Have members had any recent experience of using Aereco products. I am looking for solutions for a three bedroom semi starting with that proposed in Andrew\_Marsh’s post of August 2022 titled ‘Ventilation System Engineer/I… --- ## [Wood Moisture Equivilent Sensor/Relative Hunidity](https://community.carbon.coop/t/wood-moisture-equivilent-sensor-relative-hunidity/1114)
**Author:** [@craig.chamberlain11](https://community.carbon.coop/u/craig.chamberlain11)\ **Replies:** 5\ **Last updated:** [11 December 2025 13:06 UTC](https://community.carbon.coop/t/wood-moisture-equivilent-sensor-relative-hunidity/1114 "2025-12-11T13:06:28Z")
Has anyone any experience using sensors to monitor performance of a retrofit or identify risky humidity in joist pockets or inside building fabric? I found this article from a US builder. Why We Need Building Sensors - … --- ## [Tackling fuel poverty](https://community.carbon.coop/t/tackling-fuel-poverty/1038)
**Author:** [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\ **Replies:** 0\ **Last updated:** [8 August 2025 11:49 UTC](https://community.carbon.coop/t/tackling-fuel-poverty/1038 "2025-08-08T11:49:02Z")
This month’s newsletter includes this admirable link. I suspect that the majority of members are not in fuel poverty, yet, but it is an issue that affects society as a whole and therefore all of us. My second reactio… --- ## [ASHP noise assessment](https://community.carbon.coop/t/ashp-noise-assessment/819)
**Author:** [@Jonathan\_Keenan](https://community.carbon.coop/u/Jonathan_Keenan)\ **Replies:** 55\ **Last updated:** [11 July 2025 13:21 UTC](https://community.carbon.coop/t/ashp-noise-assessment/819 "2025-07-11T13:21:22Z")
Our ASHP installation prospects have ground to a halt as planning have requested noise assessments. These would be before and after, and presumably again once any mitigating recommendations were put in place. This would … --- ## [Apprentice opportunity](https://community.carbon.coop/t/apprentice-opportunity/1018)
**Author:** [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\ **Replies:** 0\ **Last updated:** [2 July 2025 11:45 UTC](https://community.carbon.coop/t/apprentice-opportunity/1018 "2025-07-02T11:45:28Z")
I spotted this opening for a youngster that wants to get into energy and sustainability. The job is in London and being an apprenticeship doesn’t pay enough for someone to rent in London and commute but if you know someo… --- ## [Velfac 200 vs 21 degrees 78 aluclad](https://community.carbon.coop/t/velfac-200-vs-21-degrees-78-aluclad/1014)
**Author:** [@Jo\_Farrington](https://community.carbon.coop/u/Jo_Farrington)\ **Replies:** 3\ **Last updated:** [28 June 2025 08:26 UTC](https://community.carbon.coop/t/velfac-200-vs-21-degrees-78-aluclad/1014 "2025-06-28T08:26:48Z")
Hi There are pros and cons in choosing between the velfac 200 range and the 21 degrees aluclad 78 range not the least of which is cost. Aiming to get something like 0.8 U value although not all the windows will achieve t… --- ## [160mm Steico Special Dry](https://community.carbon.coop/t/160mm-steico-special-dry/1004)
**Author:** [@Jo\_Farrington](https://community.carbon.coop/u/Jo_Farrington)\ **Replies:** 7\ **Last updated:** [15 May 2025 20:52 UTC](https://community.carbon.coop/t/160mm-steico-special-dry/1004 "2025-05-15T20:52:34Z")
Hi all. I am planning to put 160mm steico special dry above the rafters as part of installing a warm roof. The problem is finding a company that has it in stock as it would be great to take advantage of the good weather … --- ## [Setting up a Sunamp with a Samsung ASHP!](https://community.carbon.coop/t/setting-up-a-sunamp-with-a-samsung-ashp/950)
**Author:** [@tokenpom](https://community.carbon.coop/u/tokenpom)\ **Replies:** 0\ **Last updated:** [14 February 2025 22:36 UTC](https://community.carbon.coop/t/setting-up-a-sunamp-with-a-samsung-ashp/950 "2025-02-14T22:36:13Z")
Hi, please can you help ? We have a Sunamp Thermino 300 X-Plus, which we have just had connected to our newly installed Samsung R290 Gen 7 ASHP The problem we have is that our Sunamp repeatedly tells our Samsung Heatp… --- ## [Unleashing Coop Retrofit](https://community.carbon.coop/t/unleashing-coop-retrofit/927)
**Author:** [@Clive\_Durdle](https://community.carbon.coop/u/Clive_Durdle)\ **Replies:** 5\ **Last updated:** [10 February 2025 22:59 UTC](https://community.carbon.coop/t/unleashing-coop-retrofit/927 "2025-02-10T22:59:17Z")
I have been invited to join this meeting but am unable to. I would ask that the following is considered as it contains my thoughts about whole neighbourhood approaches I am now retired and have significant experience in… --- ## [Insulating microbore heating pipes](https://community.carbon.coop/t/insulating-microbore-heating-pipes/896)
**Author:** [@Jo\_Farrington](https://community.carbon.coop/u/Jo_Farrington)\ **Replies:** 5\ **Last updated:** [3 October 2024 20:30 UTC](https://community.carbon.coop/t/insulating-microbore-heating-pipes/896 "2024-10-03T20:30:03Z")
I want to insulate the microbore (10mm) heating pipes under my suspended floor and as I am hoping to install an ASHP in the future when I can afford it I need a cost effective solution as I expect I will need to change t… --- ## [Triple glazed windows](https://community.carbon.coop/t/triple-glazed-windows/883)
**Author:** [@Lorrie\_Marchington](https://community.carbon.coop/u/Lorrie_Marchington)\ **Replies:** 2\ **Last updated:** [15 September 2024 13:49 UTC](https://community.carbon.coop/t/triple-glazed-windows/883 "2024-09-15T13:49:55Z")
I have ended up with 3 triple glazed brand new internal fittings for windows. They are all obscured glass. Sizes: two at 76 x 102; and one 84 x 64. For sale. --- ## [Viessman Vitodens 100-W B1KC 30 kW (OpenTherm enabled) available](https://community.carbon.coop/t/viessman-vitodens-100-w-b1kc-30-kw-opentherm-enabled-available/855)
**Author:** [@sianrichards55](https://community.carbon.coop/u/sianrichards55)\ **Replies:** 8\ **Last updated:** [14 September 2024 18:47 UTC](https://community.carbon.coop/t/viessman-vitodens-100-w-b1kc-30-kw-opentherm-enabled-available/855 "2024-09-14T18:47:42Z")
My heat pump is being installed today (hurray), and my gas boiler will soon be looking for a second lease of life. Preferably for distress purchase or parts? Viessman Vitodens 100-W B1KC 30 kW (OpenTherm enabled) I… --- ## [Retrofit for the future](https://community.carbon.coop/t/retrofit-for-the-future/653)
**Author:** [@Clive\_Durdle](https://community.carbon.coop/u/Clive_Durdle)\ **Replies:** 10\ **Last updated:** [13 August 2024 21:39 UTC](https://community.carbon.coop/t/retrofit-for-the-future/653 "2024-08-13T21:39:54Z")
What happened to this? --- ## [TEDx on retrofit](https://community.carbon.coop/t/tedx-on-retrofit/873)
**Author:** [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\ **Replies:** 0\ **Last updated:** [26 July 2024 09:00 UTC](https://community.carbon.coop/t/tedx-on-retrofit/873 "2024-07-26T09:00:27Z")
This is an interesting talk by an “Eco worrier”. A bit of preaching to the converted on this forum but something to send to uncommitted contacts? --- ## [Maximum indoor temperatures](https://community.carbon.coop/t/maximum-indoor-temperatures/856)
**Author:** [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\ **Replies:** 8\ **Last updated:** [9 July 2024 11:27 UTC](https://community.carbon.coop/t/maximum-indoor-temperatures/856 "2024-07-09T11:27:56Z")
It is well known that indoor temperatures above 25°C are not advisable and that figure is in the Passivhaus standards for new and retrofitted buildings. Does anyone have a corresponding number for bedrooms? Surely it sh… --- ## [Can I use pv and st?](https://community.carbon.coop/t/can-i-use-pv-and-st/840)
**Author:** [@Clive\_Durdle](https://community.carbon.coop/u/Clive_Durdle)\ **Replies:** 5\ **Last updated:** [12 June 2024 08:52 UTC](https://community.carbon.coop/t/can-i-use-pv-and-st/840 "2024-06-12T08:52:45Z")
We have a 1910 terrace with back extension with north west facing sloping roof. It is getting sunlight in the afternoons now and a flat roof on a loft extension. Just got a D for energy. Is it worth putting solar panels … --- ## [Solar PV, pigeons, and micro-invertors](https://community.carbon.coop/t/solar-pv-pigeons-and-micro-invertors/837)
**Author:** [@Alan\_Mould](https://community.carbon.coop/u/Alan_Mould)\ **Replies:** 5\ **Last updated:** [2 June 2024 17:28 UTC](https://community.carbon.coop/t/solar-pv-pigeons-and-micro-invertors/837 "2024-06-02T17:28:39Z")
Hi all, I am seeking help and advice on a number of related issues. We have solar PV on our roof. I can definitely hear pigeons cooing on the roof seemingly under the panels. Reading on the internet suggests that pigeo… --- ## [Green Building Store](https://community.carbon.coop/t/green-building-store/813)
**Author:** [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\ **Replies:** 6\ **Last updated:** [3 April 2024 12:30 UTC](https://community.carbon.coop/t/green-building-store/813 "2024-04-03T12:30:08Z")
I nearly posted this yesterday but thought I’d give myself a day to calm down. As you will see, I’m still in rant mode! Yesterday I received an email from the venerable Green Building Store that gave me quite a shock an… [Next page](https://community.carbon.coop/c/uncategorized/1.md?page=1)