5 ms·
I took this even further, put air purifiers in most rooms and hooked them up to air quality sensors. Mostly they run on the very quiet setting (or not at all),
by lfodofod 4y ago
I took this even further, put air purifiers in most rooms and hooked them up to air quality sensors.
Mostly they run on the very quiet setting (or not at all), but they’ll automatically spin up if someone cooks, farts, opens a window or hits a vape pen.
- fellowniusmonk 4y agoWhat sensors do you use? I have a bunch of air filters but just leave them running all the time.
- lfodofod 4y agoI use airgradient sensors. On the other hand, instead of DIY you could just buy air purifier units with integrated air quality sensors. A friend of mine uses these, they appear to work very well https://www.philips.co.uk/c-p/AC2936_33/2000i-series-air-purifier https://www.philips.co.uk/c-p/AC2936_33/2000i-series-air-pur...
- 411111111111111 4y agoI got a Philips air purifier with such a sensor, it's a different one though (it's oval and just white at the sides). I would not recommend it purely because they decided to use an extremely poor touch interface for control which quiet often doesn't register when I try to manually adjust something like shutting the unit down temporarily or resetting an error code
- lfodofod 4y agoHonestly, that still sounds like a minor inconvenience compared to DIY. Those things seem pretty set-and-forget beyond filter replacements.
- Spivak 4y agoAlso don’t stress yourself out about air purifier quality. The only thing that matters is the disposable filter and the difference between cheap and expensive is how fast they can move air through it. They all reach the same destination. Buying a purifier that can fit standard sized “box” filters will save you $$ in the long run.
- lfodofod 4y agoThere are aesthetic concerns, it’s harder to have a bunch of air purifiers spread around your home if they’re ugly as sin. Having one very powerful air purifier hidden away in another room is not as good as having a bunch of smaller ones spread around.
- skhameneh 4y agoNot exactly, price increases with some certifications and branding. In the high end of purifiers, they can handle much smaller particulates and gasses (e.g. carbon matter measured by dozens of lbs with replacement filters costing hundreds). The most effective filters for general use will have higher CFM. CFM also decreases with smaller particulate filtering. Unless you're spending ~$1k+, most activated be carbon seems to wear out faster than it's worth considering. Overall, yes, a cheap box filter (placed specifically in the bedroom, if limited to one room) is often the most effective.
- deleted 4y ago[deleted]
- lfodofod 4y ago> Unless you're spending ~$1k+ Speaking of expensive air purifiers, you can often find excellent deals on used IQair units. I got 4 GC Multigas units from a local museum for 100 euros each. I have an alert set up on the local craigslist equivalent and constantly get emails.
- ornornor 4y agoAren’t the filters super expensive though? I see the ones for the health pro listed at 115.- each.
- aabceh 4y agoAir purifiers create ozone which is dangerous.
- lfodofod 4y agoHow does that work? Does the electric motor of the fan put out meaningful amounts of ozone?
- lobocinza 4y agoUV-C light generates ozone
- skhameneh 4y agoThis only applies, in general, to purifiers with ionizers that release positive ions.
- Rebelgecko 4y agoMine has an ozone button, are you saying even if that's turned off it's still making ozone?
- LeoPanthera 4y agoYou are confusing purifiers with ionizers.
- jenscow 4y ago> automatically spin up if someone cooks, farts, opens a window or hits a vape pen. I guess it will be on all the time for me.
- satvikpendem 4y agoAlso add a CO2 sensor (not CO, carbon monoxide, but carbon dioxide). It is staggering how much CO2 is emitted when sitting in a room working and which literally makes your mind react slower and make you more dumb, essentially.
- jiaaro 4y agoAgreed, I use the cheapest monitor on this page (currently $69 USD) – a little awkward to change the settings, but runs on USB power, monitors CO2 and temperature, and beeps when you exceed a (configurable) threshold so you know to open a window. I keep it next to my desk https://www.co2meter.com/collections/desktop https://www.co2meter.com/collections/desktop
- adriancr 4y agoThat's surprising how much it costs. Did something similar recently for fun and cost was ~20e for co2 sensor, attached to a raspberry pi pico or esp32 and it ends up being 27-30e. (add some more sensors like co or gas for 10e each, a mini display for 5e, hook up to home assistant or telegram and ends up being more useful) To be fair, QA on these things tends to be valuable, so perhaps cost might be justified. Cost likely can go down if you know what to buy, I didn't and just bought what a reputable seller had.
- jiaaro 4y agoAgreed, 70 USD probably has a healthy margin. But, I also value that it's been calibrated, tested for reliability, and is already designed/assembled.
- garfieldnate 4y ago100%, a $70 CO2 sensor made a huge difference for me. I live in Germany, and there is no ventilation unless you open the window. I noticed that when I worked all day in the apartment, at the end of the day my brain would be toast, I wouldn't be capable of any really important thought, and I'd have a splitting headache and feel exhausted. Now I just open the window whenever the meter turns yellow (which actually means I just leave the window open almost all the time). Here's the one I use: https://www.amazon.de/-/en/gp/product/B00TH3OW4Q https://www.amazon.de/-/en/gp/product/B00TH3OW4Q
- throwaway292939 4y agoMy air purifier is built in with them, and I think it's especially handy if your bedroom is close to the kitchen (range hood only does so much imo).