November 29, 2025Nov 29 Morning, looking for something to monitor the air quality in the house for when we move in. looking to see if the mvhr is doing its thing and maybe a carbon monoxide detector built or anything you can think of that needs monitoring as well. simple device needed as I’m a bit thick. cheers.
November 29, 2025Nov 29 Nice and cheap and has a phone app: I just found this on AliExpress: ￡24.98 | Tuya WiFi 15 in 1 Air Quality Detector CO/CO2/HCHO/TVOC/AQI/PM0.3/PM1.0/PM2.5/PM10/Temperature/Humidity/AQI Air Quality Monitor https://a.aliexpress.com/_EHYJGnQ
November 29, 2025Nov 29 23 minutes ago, Onoff said: Nice and cheap and has a phone app: I just found this on AliExpress: ￡24.98 | Tuya WiFi 15 in 1 Air Quality Detector CO/CO2/HCHO/TVOC/AQI/PM0.3/PM1.0/PM2.5/PM10/Temperature/Humidity/AQI Air Quality Monitor https://a.aliexpress.com/_EHYJGnQ I have got stuff from AliExpress and it has been crap. Not working, doesn't connect, chews through batteries. Cheap shit from China.
November 29, 2025Nov 29 1 hour ago, Russell griffiths said: carbon monoxide Wrong thing all together. CO2 is what you need. There are a couple I'm selling on eBay. https://ebay.us/m/MC8XHB
November 29, 2025Nov 29 I got one off ebay or amazon about £70 shows co2, temp and humidity. You do get a bit obsessed by it and have to pack it away after awhile Edited November 29, 2025Nov 29 by Oz07
November 29, 2025Nov 29 Author 2 hours ago, JohnMo said: Wrong thing all together. CO2 is what you need. There are a couple I'm selling on eBay. https://ebay.us/m/MC8XHB We have a gas hob, so was thinking of that with the monoxide, or isn’t that something to think about.
November 29, 2025Nov 29 Author 2 hours ago, JohnMo said: Wrong thing all together. CO2 is what you need. There are a couple I'm selling on eBay. https://ebay.us/m/MC8XHB Fark me there expensive. how much to a mate 😉
November 29, 2025Nov 29 3 minutes ago, Russell griffiths said: Fark me there expensive. how much to a mate 😉 I have some different ones (Deta) not listed yet, Scottish building regs compliant. Normal cost is £150 each. They do temp and CO2 instant readings and list CO2 average for last 8 and 24 hrs, plus peak over last 24 hrs. I have one new, still in box, and one used - £70 and £30 each. Can post, PM if interested. They look like this
November 29, 2025Nov 29 33 minutes ago, Russell griffiths said: We have a gas hob, so was thinking of that with the monoxide, or isn’t that something to think about. CO alarm is best kept separate to CO2 monitoring If CO too is high you need a loud alarm to wake you up and get you out the building. (Things that combust continuously, like a boiler, are biggest risk) CO2 is most interesting to see long term graph off, correlate any spikes to activity (house party is classic) or equipment performance. So suggests a cloud or App connected device of some sort You don't need an alarm for it to save lifes in the same way, even in a very airtight build
November 29, 2025Nov 29 Author 4 hours ago, joth said: CO alarm is best kept separate to CO2 monitoring If CO too is high you need a loud alarm to wake you up and get you out the building. (Things that combust continuously, like a boiler, are biggest risk) CO2 is most interesting to see long term graph off, correlate any spikes to activity (house party is classic) or equipment performance. So suggests a cloud or App connected device of some sort You don't need an alarm for it to save lifes in the same way, even in a very airtight build We have a heat and co2 in the kitchen as per regs, I just thought it might be something else a monitor would pick up.
November 29, 2025Nov 29 16 minutes ago, Russell griffiths said: We have a heat and co2 in the kitchen as per regs, Are you sure, you should have CO for carbon monoxide - not CO2 for carbon dioxide. We breath out CO2, cars, boilers and gas hobs put out CO.
November 29, 2025Nov 29 I didn't think regs required CO2 alarms (in England). CO alarms near gas appliances yes.
November 30, 2025Nov 30 Author 9 hours ago, -rick- said: I didn't think regs required CO2 alarms (in England). CO alarms near gas appliances yes. I think that’s what I mean, told you I was thick. all fitted by the sparky. along with the other dozen in the house.
November 30, 2025Nov 30 20 hours ago, JohnMo said: We breath out CO2, cars, boilers and gas hobs put out CO. Gas, oil, coal and timber fires also produce CO2. They also convert most of the hydrogen in the hydrocarbon to water vapour. A really badly set up gas boiler will also produce some oxides of nitrogen. (combustion chemistry is quite simple, generally, just look at what the base fuel is made from, split it up and add an oxygen atom or two to it. NOX is normally a secondary reaction caused by high temperature or pressure)
November 30, 2025Nov 30 46 minutes ago, SteamyTea said: Gas, oil, coal and timber fires also produce CO2. They also convert most of the hydrogen in the hydrocarbon to water vapour. A really badly set up gas boiler will also produce some oxides of nitrogen. (combustion chemistry is quite simple, generally, just look at what the base fuel is made from, split it up and add an oxygen atom or two to it. NOX is normally a secondary reaction caused by high temperature or pressure) Well done you.
November 30, 2025Nov 30 58 minutes ago, SteamyTea said: (combustion chemistry is quite simple, generally, just look at what the base fuel is made from, split it up and add an oxygen atom or two to it. NOX is normally a secondary reaction caused by high temperature or pressure) 🤯
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