- “Removes 99.995% of particles to 0.3 microns” - This language is another version of a common mistake made by air purifier companies implying that they remove that amount of particles down to the size of 0.3 microns, but not smaller. In fact, 0.3 microns is the hardest size to filter, and the functionality of HEPA 14 filters is actually greater than the rated 99.995% for ultra-fine particles smaller than 0.3 microns.
- “purifies 2,600 sq ft of air per hour” - Air is measured in cubic feet, not square feet. You can talk about purifying a 2600 square foot room, but i’m not sure where you would have gotten that number from. Usually we talk about air changes per hour– the ideal target for a room would be 5, but air purifier manufacturers often give the ratings for one, two, and four, assuming optimistically that the room without the purifier has an additional one.
- 459.09 ft^3/min * 60 min = 27,545 cubic feet / hour.
- This would provide 1 Air Change per Hour for a room of 2,600 sq ft and a ceiling height of ~10.5’, but the baseline number used for residential spaces is usually 8 feet. Classrooms are more like 9.5'.
- “Designed by a doctor to target key air pollutants.” - Is there anything about this design that targets air pollutants not normally targeted by air purifiers? I guess it's not technically false, but it's a bit misleading.
- “Activated carbon removes VOCs” - It also targets some other gases (ie you could make some increased claims here)
- On the product page you say "780 m3/h or 434 cfm” - i guess this is where your 2,600 square feet assumption came from, using 10 foot ceilings? Those two numbers are not the same though.
- 1 m3/hr to cfm = 0.58858 cfm
- 780 m3/hr * .58858 = 459.09 cubic ft /hr
1 ACH | 2 ACH | 4 ACH | |
Room Size (sq ft) | 3,443 | 1,721 | 860 |
General comments:
- All of your marketing language seems to be focused on PM2.5 particles. However, given that you are using HEPA 14 filters, you could also talk a lot about the health dangers of ultrafine particles (e.g. 1 µm and smaller), which don't get discussed enough. There is a lot of newer research indicating that some of these might even be more dangerous than PM2.5 particles because they are more likely to both stay airborne longer and to adhere to small surfaces within the lungs.
- The comparison grid to other air purifiers might turn some people off because it's all checks for you and all Xs for the competitors. It usually works better if there is some mix which comes across as a more fair comparison.
- An example of a easy one to list here would be comparing your noise level with other units with large fans but no dual intake.
- “Why HEPA 14?” - this doesn’t list any benefit unique to HEPA 14 filters. Although really, when it comes to eliminating PM2.5 particles in a consumer environment there is no meaningful mathematical difference between a HEPA 13 and HEPA 14, given that the limiting factor is the fan speed and amount of air you can handle in a given unit of time.
- It is described as “quiet and powerful fans”, but I don't see the decibel rating at the different fan speeds listed anywhere.
- You should probably list the technical specifications somewhere.