Pinned Tweet
In a bid to replace falling ad revenue, big media publishers are inundating the web with bad product recommendations you can’t trust.
Google is killing independent sites like ours through inaction.
We hope to still be here to see things change:
housefresh.com/david-vs-digit…
Google is killing independent sites like ours through inaction.
We hope to still be here to see things change:
housefresh.com/david-vs-digit…
55
153
526
117,530
Sans is one of the most heavily advertised air purifiers on the internet, but is it any good?
We bought one to test it and find out.
▶️ youtube.com/watch?v=ICW6Hd…
We bought one to test it and find out.
▶️ youtube.com/watch?v=ICW6Hd…
1
2
7
370
HouseFresh retweeted
We are pleased to announce a major redesign of our Polaris air purifier. Slimmer and easier to assemble, it is now sized to accept the very popular 20x20x1 3M Filtrete MPR1900/2200. This is a test sample in raw aluminum prior to powder-coating. #airpurifier #IAQ
5
19
103
1,777
HouseFresh retweeted
I just get a review. From the picture I can see the bag for 3Pro could also work for 5Pro. Anyone who still have the link can share it in the comments.
7
13
171
3,529
HouseFresh retweeted
They killed website upon website after assimilating their content and starving them from traffic for years, and for what?
Google admits AI search makes less money, but it's fixing that with more ads arstechnica.com/gadgets/2026/1…
25
137
1,177
17,630
HouseFresh retweeted
It is available on amazon.com/dp/B0HLRJ47WL?… for people in the US and air-fanta.com/products/airfa… for people in Canada, EU, UK and AU.
7
25
106
2,150
RT @VentiloAngel: 1/CO₂ sensor tests.
Accuracy of 8 CO₂ sensors estimated against the Aranet4
(AirGradient ONE, AirSpotHealth, Qingping Air…
Accuracy of 8 CO₂ sensors estimated against the Aranet4
(AirGradient ONE, AirSpotHealth, Qingping Air…
0
14
0
31
HouseFresh retweeted
In online shopping today, the hardest part is getting the first thirty reviews. Without sales, there are no reviews; but without reviews, it's very hard to get sales. If you could purchase the 5Pro on Amazon and provide an honest review, it would help me a great deal.
6
47
180
3,626
HouseFresh retweeted
I just got an AirFanta 5Pro a few days ago. Does it really fit in a carry on suitcase, and is it quiet? Yes, and it can be very quiet at lower fan speeds but is a bit noisy on max fan speed.
I ordered the 5Pro because I wanted an efficient whole room air purifier that is got a number of air purifiers I can fit in a suitcase, but none of them have really high airflows like the 5Pro does with it's 4 filter, CR Box-style configuration.
CADR
At max fan speed, the 5Pro has an AHAM registered Clean Air Delivery Rate of 379 cubic feet per minute for smoke in an 8' high room that's 587ft². That's 4.8 air changes per hour, or a smoke-free room in 12.4 minutes - I've not tested the CADR myself, but the testing is certified by AHAM on their website. You'll get higher air changes per hour in a smaller room, and fewer in a larger one.
ahamdir.com/directory
Packability
When disassembled, the stack of 5Pro parts is well under 8" high and fits in to my carry on suitcase, or even a shopping bag - just not a TJs bag because they are fairly narrow.
Unlike a regular CR Box, the filters are inserted into plastic panels that form the sides of the 5Pro, making for a nicer looking and more durable design that can be assembled and disassembled quickly and securely. The panels have magnets for quick alignment, and all 4 filter panels are the same, so assembly is easy.
When the 5Pro's top, bottom and sides are disassembled the stack parts is under 8 inches total. However, the filters are exposed on one side of the panels, subject to potential damage during transport if not handled carefully. The stacked 5Pro doesn't fit into my suitcase if I add the foam included in the original packaging in between the layers of filters. I've stacked the filters with the grills outward to protect them, but that does leave them rubbing filter to filter in the stack.
I generally check my bags when flying, but without being able to fit in the foam packing that the 5Pro ships with, I'd be reluctant to trust the bare stack as checked baggage in my soft-sided suit case. Your suitcase may have more room than mine since mine has the roller-bag extending handles nested on the inside of the suitcase rather than on the outside, and your luggage may have harder, more protective sides.
The fit and finish of the 5Pro is good. The included 12V power supply is compact. And the control knob is simple to use - push to turn on or off, and rotate for different fan speeds. The fan speed percentage is shown on the display.
Noise Levels
There is a built in particle counter and an optional auto mode based on particle count, but for me my sleep is less disturbed if fan noise, even if relatively quiet, is continuous rather than intermittent. So I'm more likely to use the manual mode. But I like that there is a built in particle counter and auto mode option.
The noise levels have a wide range. At 25% fan speed, the sound levels are too quiet for me to measure since the room I tried out 5P in had 34 dB ambient noise levels. The reported SPL for 25% fan speed is 28.5 dB, and it is very quiet. The CADR at that speed is 72 CFM.
Sound becomes noticeable, but still pretty quiet at 45% fan speed, with a reported 39.5dB at a CADR of 174 CFM. (For comparison, the durable Nukit Tempest Pro has a CADR of 222 CFM at 37dBA, but it doesn't fit in a carry on suitcase.)
Fan noise is annoying at the max fan speed. It's not just the volume, which isn't that loud at its reported 53.1dB, but the whine of the 4 fans sounds like a loud desktop computer on turbo mode with fans pouring on the speed to cool down the CPU - it's a different sound than a larger single fan air purifier. However, you can choose your prefered sound levels / CADRs.
AirFanta has published CADRs for the 5Pro's entire fan speed range in the FAQ "What is the smoke CADR, power and noise level in different fan speed?" near the bottom of the page.
air-fanta.com/products/airfa…
Overall, the 5Pro has delivered on it's promises. It has high airflow and packability all in the same unit. I wish the max fan speed was a bit more pleasant sounding, but there is the option to turn the fan speed down for quieter operation at lower CADRs. Shipping in the US was very fast, just a couple of days. YMMV.
It will take time to tell how durable and reliable the 5Pro is in the long run.
YouTube short with fan speed sound level examples at the link in the next comment.
Not a sponsored post.
I ordered the 5Pro because I wanted an efficient whole room air purifier that is got a number of air purifiers I can fit in a suitcase, but none of them have really high airflows like the 5Pro does with it's 4 filter, CR Box-style configuration.
CADR
At max fan speed, the 5Pro has an AHAM registered Clean Air Delivery Rate of 379 cubic feet per minute for smoke in an 8' high room that's 587ft². That's 4.8 air changes per hour, or a smoke-free room in 12.4 minutes - I've not tested the CADR myself, but the testing is certified by AHAM on their website. You'll get higher air changes per hour in a smaller room, and fewer in a larger one.
ahamdir.com/directory
Packability
When disassembled, the stack of 5Pro parts is well under 8" high and fits in to my carry on suitcase, or even a shopping bag - just not a TJs bag because they are fairly narrow.
Unlike a regular CR Box, the filters are inserted into plastic panels that form the sides of the 5Pro, making for a nicer looking and more durable design that can be assembled and disassembled quickly and securely. The panels have magnets for quick alignment, and all 4 filter panels are the same, so assembly is easy.
When the 5Pro's top, bottom and sides are disassembled the stack parts is under 8 inches total. However, the filters are exposed on one side of the panels, subject to potential damage during transport if not handled carefully. The stacked 5Pro doesn't fit into my suitcase if I add the foam included in the original packaging in between the layers of filters. I've stacked the filters with the grills outward to protect them, but that does leave them rubbing filter to filter in the stack.
I generally check my bags when flying, but without being able to fit in the foam packing that the 5Pro ships with, I'd be reluctant to trust the bare stack as checked baggage in my soft-sided suit case. Your suitcase may have more room than mine since mine has the roller-bag extending handles nested on the inside of the suitcase rather than on the outside, and your luggage may have harder, more protective sides.
The fit and finish of the 5Pro is good. The included 12V power supply is compact. And the control knob is simple to use - push to turn on or off, and rotate for different fan speeds. The fan speed percentage is shown on the display.
Noise Levels
There is a built in particle counter and an optional auto mode based on particle count, but for me my sleep is less disturbed if fan noise, even if relatively quiet, is continuous rather than intermittent. So I'm more likely to use the manual mode. But I like that there is a built in particle counter and auto mode option.
The noise levels have a wide range. At 25% fan speed, the sound levels are too quiet for me to measure since the room I tried out 5P in had 34 dB ambient noise levels. The reported SPL for 25% fan speed is 28.5 dB, and it is very quiet. The CADR at that speed is 72 CFM.
Sound becomes noticeable, but still pretty quiet at 45% fan speed, with a reported 39.5dB at a CADR of 174 CFM. (For comparison, the durable Nukit Tempest Pro has a CADR of 222 CFM at 37dBA, but it doesn't fit in a carry on suitcase.)
Fan noise is annoying at the max fan speed. It's not just the volume, which isn't that loud at its reported 53.1dB, but the whine of the 4 fans sounds like a loud desktop computer on turbo mode with fans pouring on the speed to cool down the CPU - it's a different sound than a larger single fan air purifier. However, you can choose your prefered sound levels / CADRs.
AirFanta has published CADRs for the 5Pro's entire fan speed range in the FAQ "What is the smoke CADR, power and noise level in different fan speed?" near the bottom of the page.
air-fanta.com/products/airfa…
Overall, the 5Pro has delivered on it's promises. It has high airflow and packability all in the same unit. I wish the max fan speed was a bit more pleasant sounding, but there is the option to turn the fan speed down for quieter operation at lower CADRs. Shipping in the US was very fast, just a couple of days. YMMV.
It will take time to tell how durable and reliable the 5Pro is in the long run.
YouTube short with fan speed sound level examples at the link in the next comment.
Not a sponsored post.
14
79
413
8,239
Our second AirFanta 5Pro has arrived for some more tests to confirm the results of our first device 👀
7
16
232
2,928
Full AirFanta 5Pro review coming soon!
We’ve been using it at home for just over four months to test everything about it.
Currently running the bedroom test 💤
We’ve been using it at home for just over four months to test everything about it.
Currently running the bedroom test 💤
AirFanta 5Pro Officially Launched: Two Years in the Making, Fully Evolved
We are excited to announce the launch of our new air purifier, the AirFanta 5Pro, following two years of design and manufacturing.
The 5Pro has been redesigned based on the structure of the 3Pro, with board: it looks better and is easier to install.
In terms of performance, the CADR remains outstanding. Measured in an AHAM-certified laboratory, the results are as follows:
PM2.5: 393 CFM
SMOKE: 379 CFM
DUST: 408 CFM
Pollen: >450 CFM
We are also applying for AHAM and ENERGY STAR certification.
In addition, the 5Pro now features a PM2.5 sensor and display, as well as an Auto mode. When disassembled, it can still fit into a 20-inch suitcase, making it easy to carry and store.
For purchase links and more information, please click the link below:
air-fanta.com/products/airfa…
It is currently available for purchase in the United States, Canada, Europe, the United Kingdom, Australia, and countries across East Asia and Southeast Asia.
7
44
271
4,813
HouseFresh retweeted
@SmartAirFilters This is exactly the kind of message that should be shared more widely.
Lower PM₂.₅ exposure is better, even when concentrations are already relatively low. This study is far from an isolated finding: a large body of research has documented adverse health effects at concentrations lower than previously understood.
This accumulating evidence is precisely why the WHO lowered its annual PM₂.₅ guideline from 10 to 5 µg/m³ in 2021. The WHO specifically noted that the change primarily reflected new evidence of health effects occurring at low levels of exposure.
The same direction is reflected in the U.S.: in 2024, the EPA strengthened its annual health-based PM₂.₅ standard from 12 to 9 µg/m³, based on the available health science.
“Low” does not mean harmless. No threshold has been identified below which PM₂.₅ causes no adverse health effects. That means reducing exposure further can still matter even when the air already seems relatively clean.
That is why communicating findings like these matters: people need to know that reducing particulate exposure isn't only worthwhile when pollution is obviously high. Even relatively small reductions at lower concentrations can matter for public health.
This is also why, in my own place, I aim to keep PM₂.₅ as low as possible. My Qingping Air Monitor Lite normally reads 0 µg/m³, and when I cook, I monitor PM₂.₅ closely and try to bring it back down as quickly as possible.
Cooking can cause surprisingly high PM₂.₅ spikes indoors, something many people only discover once they start monitoring their air, and which has led many of us to change our cooking and ventilation habits.
To put this into perspective: if PM₂.₅ averages 5 µg/m³ for 23.5 hours, a single 30-minute cooking episode averaging 250 µg/m³ is enough to raise the entire 24-hour average to about 10 µg/m³.
That is why I don't dismiss short-term exposure just because the air is clean most of the day. Keeping PM₂.₅ low also means paying attention to those temporary but significant indoor spikes.
Lower PM₂.₅ exposure is better, even when concentrations are already relatively low. This study is far from an isolated finding: a large body of research has documented adverse health effects at concentrations lower than previously understood.
This accumulating evidence is precisely why the WHO lowered its annual PM₂.₅ guideline from 10 to 5 µg/m³ in 2021. The WHO specifically noted that the change primarily reflected new evidence of health effects occurring at low levels of exposure.
The same direction is reflected in the U.S.: in 2024, the EPA strengthened its annual health-based PM₂.₅ standard from 12 to 9 µg/m³, based on the available health science.
“Low” does not mean harmless. No threshold has been identified below which PM₂.₅ causes no adverse health effects. That means reducing exposure further can still matter even when the air already seems relatively clean.
That is why communicating findings like these matters: people need to know that reducing particulate exposure isn't only worthwhile when pollution is obviously high. Even relatively small reductions at lower concentrations can matter for public health.
This is also why, in my own place, I aim to keep PM₂.₅ as low as possible. My Qingping Air Monitor Lite normally reads 0 µg/m³, and when I cook, I monitor PM₂.₅ closely and try to bring it back down as quickly as possible.
Cooking can cause surprisingly high PM₂.₅ spikes indoors, something many people only discover once they start monitoring their air, and which has led many of us to change our cooking and ventilation habits.
To put this into perspective: if PM₂.₅ averages 5 µg/m³ for 23.5 hours, a single 30-minute cooking episode averaging 250 µg/m³ is enough to raise the entire 24-hour average to about 10 µg/m³.
That is why I don't dismiss short-term exposure just because the air is clean most of the day. Keeping PM₂.₅ low also means paying attention to those temporary but significant indoor spikes.
Listen, I'm totally biased, but I think you should always have an air purifier on at home. Why? Because studies find health benefits even for lowering from "good" to "even better." This is what I do in my home. @Quora
quora.com/Do-air-purifie…
4
4
19
4,718
HouseFresh retweeted
Testing the AirGradient Go (portable AQ monitor) in Songdo, South Korea.
Distance: 5.6km
Avg PM2.5: 13.7 µg/m³ (Moderate)
Max PM2.5: 17.9 µg/m³ (Moderate)
Distance: 5.6km
Avg PM2.5: 13.7 µg/m³ (Moderate)
Max PM2.5: 17.9 µg/m³ (Moderate)
1
3
8
432
HouseFresh retweeted
H13 filters are typically used in laminar-flow air purification equipment—more precisely, laminar-flow supply devices such as FFUs and laminar-flow hoods. Such equipment does not rely on recirculating filtration; instead, it delivers a single pass of extremely clean air to create a localized clean zone. It is mainly used in cleanrooms, hospital operating rooms, pharmaceutical production lines, and biosafety laboratories. For residential air purifiers that use recirculating filtration, H13 filters are unsuitable because their high resistance actually reduces CADR. Unfortunately, after more than a decade of commercial marketing, the idea that “the higher the filter rating, the better” has become deeply ingrained in consumers’ minds. Through repeated testing, I have found that EPA11–12 filters can provide the highest CADR in most air purifiers—though this also depends to some extent on the fan’s airflow-versus-resistance curve.
2
14
88
8,753
HouseFresh retweeted
This brilliant ad summarizes our mission statement, make devices that can be repaired, upgraded and don't rely on proprietary components that lock you in. Maybe not the best business strategy but we're not really "business" people:
youtu.be/d6SPV4GZp-U?si…
youtu.be/d6SPV4GZp-U?si…
0
1
7
303
HouseFresh retweeted
Came across this image a while ago from @housefresh whilst doomscrolling and felt it was important to share.
Using 2024 PM2.5 data, it estimates the cigarette equivalent air pollution exposure across 20 UK cities. A powerful reminder that cleaner air matters.
#AirQuality
Using 2024 PM2.5 data, it estimates the cigarette equivalent air pollution exposure across 20 UK cities. A powerful reminder that cleaner air matters.
#AirQuality
2
5
22
550
HouseFresh retweeted
Picture this:
Google’s algorithm updates have been slowly killing your long-standing food blog year after year.
No matter what you do, traffic from search keeps dropping so you decide to sell the domain to the highest bidder.
They tell you their company has a “commitment to high editorial standards” and “honest information,” so you trust that your hobbyist website will be in good hands.
Soon after, the weird self-help AI slop articles start appearing.
Your site was about vegan food but somehow they are now publishing stories about how “psychology says the loneliest people in life aren’t the ones nobody likes — they’re the kind, helpful people everyone appreciates but nobody thinks to check on.”
Your blog is now another AI slop zombie website being farmed for Google Discovery traffic and ad money.
Welcome to the content farm ↓
Google’s algorithm updates have been slowly killing your long-standing food blog year after year.
No matter what you do, traffic from search keeps dropping so you decide to sell the domain to the highest bidder.
They tell you their company has a “commitment to high editorial standards” and “honest information,” so you trust that your hobbyist website will be in good hands.
Soon after, the weird self-help AI slop articles start appearing.
Your site was about vegan food but somehow they are now publishing stories about how “psychology says the loneliest people in life aren’t the ones nobody likes — they’re the kind, helpful people everyone appreciates but nobody thinks to check on.”
Your blog is now another AI slop zombie website being farmed for Google Discovery traffic and ad money.
Welcome to the content farm ↓
NEW: Brown Brothers Media is the most successful media company you've never heard of. Its success was fueled by AI, fake writers, and fake reporting.
When we started asking questions, BBM started mass-deleting content. What it became next was even worse.
futurism.com/artificial-int…
2
10
38
1,887
Nearly 2,000 AirGradient users from around the world have opted in to share their indoor air quality data publicly.
The data is openly available through the AirGradient public API under a CC-BY-SA license, and you can access the live map here: openair.foundation/projects/indoo…
The data is openly available through the AirGradient public API under a CC-BY-SA license, and you can access the live map here: openair.foundation/projects/indoo…
1
5
19
659
HouseFresh retweeted
Now that kids are back at school, and autumn is coming, airborne illnesses are going to spread through schools.
Will you write to your MP to ask them to support putting air filters in all classrooms, please.
You can download a template letter here...
cleanairforkids.co.uk/contact-your-mp
Will you write to your MP to ask them to support putting air filters in all classrooms, please.
You can download a template letter here...
cleanairforkids.co.uk/contact-your-mp
1
78
132
2,112
HouseFresh retweeted
We've shipped air purifiers across Canada and I've had nothing but wonderful interactions with our fellow citizens. We will overcome this attack on our nation by sticking together and building on our strengths. #buycanadian #airpurifier #airquality
1
3
7
180