BreatheSafeAir

Black Friday 2025 Air Quality Monitor Discounts (Save Up to 50% on Air Quality Monitors!) With Black Friday right around the corner, a surprising number of air quality monitors are already on sale - and some of the discounts are quite significant. If you’ve been waiting to pick up a specif...

A list of some of the best Black Friday deals for air quality monitors.

(The Aranet4 Home can currently be found for almost 50% off!).

forum.breathesafeair.com/t/black-frid...

If you're interested in getting an Aranet4 Home, now is a good time as the monitor is currently 30% off, and you can save a further 5% with the code BREATHESAFEARANET.

There are also some discounts on their other monitors and bundles!

aranet.com/en/home

Most air quality monitor 'reviews' don't even cover the important aspects.

This is an interesting read, and one of the reasons I don't trust most websites when it comes to reviews of air quality monitors

www.airgradient.com/blog/wired-r...

INKBIRD PTH-10C - My New Favourite Affordable Carbon Dioxide Monitor However, I've recently been getting quite a few questions about trying another low-cost monitor - the INKBIRD PTH-10C. This device comes at a very similar

Is the super affordable INKBIRD PTH-10C carbon dioxide monitor worth it?

breathesafeair.com/inkbird-pth-...

I’ve been asked about this inexpensive CO2 monitor many times, so I finally decided to pick one up to see if it’s better than the Vitalight (another affordable option). I paid a total of $34 for this, so I’m hoping it’s at least accurate because it could be a compelling budget option!

Image shows a SketchUp view of the concept model. It uses four 24x24x1” 3M Filtrete 1900 MERV13 filters in an M configuration, above eight down-blowing 140mm Arctic P14PWM fans. (Shows simplified fan bodies, but not blades ‘cause that was easier to model.)

Finally! I built & tested an open-source concept model air purifier that should be good for schools. Lots of air (CADR > 420 CFM), quiet (<45 dBA), uses <9 W, and ‘cause it’s wall-mounted & down-blowing, it moves air in the right direction & takes up no floor space. Always check my ALTs🧵⬇️

Thank you for sharing!

Thank you for sharing this!

11 Best Carbon Dioxide Monitors - What You Need to Know about CO2 Monitoring Despite being available for many years, carbon dioxide monitors have only recently gained widespread attention. These handy devices - perfect for identifying

Hey CC, LC, and IAQ folks:
Ethan from @breathesafeair.bsky.social has a newly updated list of top CO2 monitors (updated on of Mar 26, 2025):
breathesafeair.com/carbon-dioxi...

I’ve been super busy with work, so I haven’t had as much time to write recently, but I am currently working on a full review for the ultra-compact Airspothealth CO2 monitor.

This monitor is so convenient to carry around, and I love it for that reason.

Bloody brilliant!

Livegrid is a super cool Tamagotchi-inspired CO2 monitor that allows you to grow fish in a digital aquarium by maintaining good air quality. I'm very excited to review it in the coming weeks!

Temtop S1+ Review - The Most Affordable Portable Air Quality Monitor A detailed review of the Temtop S1+, a budget-friendly portable air quality monitor that measures PM2.5, temperature, and humidity. Explore its features, accuracy, design, and limitations.

Temtop S1+ Review - the most affordable portable PM.5 monitor!

breathesafeair.com/temtop-s1-re...

If you are in L.A. and impacted by wildfire smoke, AirGradient is currently donating 25 monitors (and potentially more). You can express interest by filling out the Google Form at the end of this article.

www.airgradient.com/blog/los-ang...

Wildfire Smoke - How to Protect Yourself During Wildfire Season With wildfires becoming more common, it's more important than ever to know the dangers of wildfire smoke and how we can stay safe from them.

Wildfire smoke and how to protect yourself.

breathesafeair.com/wildfire-smo...

The AirValent TravelLite is a new CO2 monitor that shares the internals of the AirValent CO2 monitor but has a plastic housing and comes in at a lower price point. Full review coming soon!

Support Ethan Brooke (BreatheSafeAir) on Ko-fi! ❤️. ko-fi.com/breathesafeair Support Ethan Brooke (BreatheSafeAir) On Ko-fi. Ko-fi lets you support the people and causes you love with small donations

After a lot of contemplation, I’ve decided to launch a Ko-Fi page for anyone interested in supporting BreatheSafeAir. All donations will go towards improving the site and writing new articles!

ko-fi.com/breathesafeair

AirFanta G2 Review - An Inexpensive Air Quality Monitor A detailed review of the AirFanta G2 air quality monitor, covering its features, performance, pros, cons, and suitability for tracking PM2.5, CO2, and more in various settings.

Full review of the AirFanta G2 Air Quality Monitor by @adamwong.bsky.social!

breathesafeair.com/airfanta-g2-...

Qingping Air Monitor Lite Review - Small in Size, Heavy on Features However, the Air Monitor isn’t the only product in Qingping’s air monitoring lineup. While it’s currently the top model on offer, it’s not the most popular.

The Qingping Air Monitor Lite is one of the best affordable air quality monitors out there. Measuring both CO2 and PM, it gives a better overview than devices like the Aranet4.

breathesafeair.com/qingping-air...

You're welcome! It's a great review and there's no better place to compare purifiers.

AirGradient ONE Review - An Open-Source, Affordable Air Quality Monitor The AirGradient ONE is an open-source, DIY air quality monitor that has user-replaceable parts - all at a very affordable price.

AirGradient ONE review - An open source indoor air quality monitor.

breathesafeair.com/airgradient-...

This should be fixed now. Thanks again for pointing out the error - I appreciate it!

This was also pointed out on X. Thank you for bringing it to my attention, too! I will amend it in the morning (it’s late here now!).

AirFanta 3Pro Review - A High-Performance Yet Affordable Air Purifier The AirFanta 3Pro air purifier offers a CADR of 413 CFM, HEPA H11 filters, and optional carbon filters. A compact, certified option for air purification with adjustable performance settings.

A full review of the AirFanta 3Pro from @adamwong.bsky.social. Overall, a highly performant air purifier with a low price tag!

breathesafeair.com/airfanta-3pr...

They were very appreciative :)

I believe there may be another giveaway coming very soon, so if you are interested in joining again, please stay tuned. Good luck!

Aranet Radon Plus Review - The Most Convenient Radon Monitor The Aranet Radon Plus is a user-friendly, accurate radon monitor with long battery life, smart home integration, detailed app support, and reliable real-time tracking.

The Aranet Radon Plus has quickly become my favourite radon monitor simply due to how great the connectivity is (the other radon monitors I've tried have been horrible in this regard).

breathesafeair.com/aranet-radon...

I just contacted the winner and have sent the monitor. However, I can't share their profile without their consent.

BreatheSafeAir Forum A place for discussions related to air quality and adjacent topics.

If you have any questions about air quality monitors, air pollution, or adjacent topics, please feel free to head to the forum and join in the conversation!

forum.breathesafeair.com

Free CO2 monitor giveaway! Ends in about eight hours.

I apologies for the X link - next time I run such a giveaway I will make sure to post it here, too.

x.com/safe_breathe...

I agree! I am very curious to see how the AirFanta 4Lite performs in particular. I have the 3Pro with me (review coming soon!), but I haven't yet had a chance to try the 4Lite. I've heard very good things, though!