Air purifier going red when sublimating

[Gemr93]

Hi, I sublimate polyester and have recently bought an air purifier for my workspace, and have noticed it goes red pretty quick after subbing 3-4 garments, indicating poor air quality. My presses are right next to an open window and I also have a fan to circulate air. I’m a massive worrier so I’ve googled, and couldn’t find any websites about sublimation which said there are any risks involved in sublimation in terms of fumes produced, apart from one which said that exposing low quality polyester to the temperatures required for sublimation may release toxic fumes. I then ended up down a rabbit hole googling ‘is polyester toxic when heated’ and according to the websites I found, polyester is basically the devil, containing formaldehyde and anitomy along with many other chemicals apparently.


Most of these websites with this information are those selling ‘eco-friendly’ alternative products, and while it seems like a scare tactic to increase their sales and drive people aware from polyester, I can’t help but worry about it. I’m hoping it’s a bit like the beauty industry where companies will tout their products as having ‘no chemicals’ and therefore better than competitors, even though the chemicals in their competitor’s products either aren’t harmful, or aren’t harmful in the quantities they’re found in these products.

I don’t know a lot about air purifiers and I’m hoping it’s simply just the steam generated from heating that’s setting it off, but seeing it going red stresses me out that I’m harming myself in some way. I know the inks I use are safe, and the dyes used in the garments I use are azo-free, I’m just worried about what’s in the polyester itself.

More than happy to be told I’m being ridiculous with my concerns!

[Fidget242]

My air purifier goes red if we cook bacon

I don't believe the 'red' means danger, just that it's detected smoke or steam and stuff - which you get off a lot of sublimation. I would love to know if there actually are any health concerns from this though, I've been subbing on and off for coming up to 20 years so I fear it's too late for me if there is lol.

[UK Printed Mugs]

The colours usually reflect the humidity in the air. Red is normally above 70%, amber over 60% and green below 60%. Most substrates release water vapor - as well as bacon

[Mrteajunkie]

The colours usually reflect the humidity in the air. Red is normally above 70%, amber over 60% and green below 60%. Most substrates release water vapor - as well as bacon

Ooh which substrates release bacon?
I need to get some of these.