Questions covering indoor and outdoor air quality through the Dyson App.
- 33 Topics
- 106 Replies
Hi,I’ve recently bought air quality measurement that measures formaldehyde, TVOC, PM2.5, PM.10, CO and CO2 in my apartment. The measuring device was calibrated and it was showing slightly elevated numbers (see picture attached). I would like to confirm these numbers prior to purchasing Dyson device. Can you recommend a device that can measure the air quality in my room? Thanks! Martin
I have purchased HP07 air purifier few weeks back. I noticed whenever I turn heating mode ON, air quality of my room takes a hit and reaches to very poor in a minute or two and later on it goes to extremes. We get weird smell as well and out of no where machine starts showing VOC as well inside the room whereas in cooling mode VOC is always 0 and AQI is below 30. God knows what is going on, customer support is also not helping. They keep resetting the machine as if it is going to do any good.Just see the difference. One image showcases air quality in cool mode and another image showcases air quality in heating mode :((Edited by moderator – Tags added)
Hello!Lately the air indoors using my air purifier is sensing bad air inside my home. Before it was always green and/or fair. Now it is poor or very poor. I live in Texas and I know it is humid and I always have my windows close…so I cannot say anything about it.when cooking always turn on the fans….but I can’t seem to change the air Please help (Edited by moderator – Tags added)
Hi - I have 2 Dyson Airpurifier Cool Formaldehyde (TP09) and the Formaldehyde reading has been stuck at 0.000 for the past week on both machines.I am very skeptical about the results because an Home Quality expert detected Formaldehyde at my place and I have dedicated devices that indicates some levels of HCHO due my wood floor off-gasing.I have already reseted both devices but the problem persists. Do we have any evidence of the accuracy of the HCHO measure for TP09?Thank you(Edited by moderator – Tags added)
The air quality in my room, according to my sensor, has been fluctuating very dramatically and I am wondering if this happens to other people, if there is something wrong with my sensor, or if I just have a serious air quality problem? If anyone has any input on how to interpret this information it would be super helpful! Thank you!(Edited by moderator – Tag added)
The monitor is good but I only remember to look at it every now and then, missing periods of bad air where I could have acted, opened a window or something like that. Wouldn’t it make sense for a notification to be sent if the air got really bad? Does this exist? It can certainly notify me when the filters want replacing so it doesn’t seem out of the question.
Been using the hot & cool formaldehyde for months, daily with no issues but out of nowhere it started emitting a chemical like odour. Similar to the smell of permanent marker ink. I didn't pick up where it was coming from for a day or so but determined its definitely from the machine after having it off for a period. My filter is still at least 90% but has it taken in something unusual and been compromised? I don't use chemicals around the machine, the only thing I can think of is maybe some spray hand sanitiser being used in an adjacent room which causes the VOC to rise as I walk past. It doesn't smell spoiled or rancid in any way, but is headache inducing. I've stopped using immediately on realising the issue. (Edited by moderator – Tags added and moved to ‘Air quality’ forum)
For the past week the PM2.5 and PM10 readings have been off the scale, ie >999ug/m3 (severe) on our Dyson Pure Hot & Cool. We had a decorator in recently but is this normal a week later? We have had windows open and good breeze blowing through but there’s been no change in the reading: it’s still off the scale. Any ideas anyone?David(Edited by moderator – tags added)
Hi Stuart,I read of this on Reddit after opening my new PH04 a few hours ago. At first run, over maybe two hours, humidity climbed from 26% to 28%, and when it dropped back to 27% and stayed, I did a deep clean. I had also already rinsed the pump base cap — and confirmed that the evaporator was wet after that first run. In the hour since the deep clean, using the same settings — humidity target 70%, air flow 10, purify off — I’ve watched humidity slowly climb from 25% to 30%. It’s been some time now since that last jump between 29% and 30%.I hope you won’t mind if I jump in with a few quick questions:The pump base cap — how do you recommend cleaning it, and both its inner (hidden) side and its external side? Is this the only part of the pump base that should be cleaned? to paraphrase a piece of advice from Reddit: if, after a run, the evaporator is wet, the unit is not defective; in fact, it’s trying the hardest it can. True? I’m running this in the middle of a very small living room
I run my HP02 hot cool link on auto normally, but when I turn on heat mode it will suddenly leap to Poor or Very Poor air quality in a matter of minutes! There is also a burning smell coming from the Dyson. I still have plenty of filter life according to the app.I know that it is generated by the Dyson because when I turn off heating mode, let it cool off for a while, run my other purifiers (and wall heater) for a while it slowly reduces back to Good air quality.This has happened multiple times! From the first few months of ownership til now.I have done the usual troubleshooting such as vacuuming and cleaning the sensor. I’m 99% sure it’s caused by the Dyson heat mode and coming from the Dyson itself. I just don’t use it in heat mode now and use my home’s built in wall heater. Do I have a faulty machine? Should I use the warranty?(Edited by moderator – tags added)
Hi!We had our machine constant at lvl 10 for quite some time to help our baby sleep. One day I came into the room and it smelled like burning rubber or something definitely not normal. VOC was high, obviously. We turned off the Dyson for a few days. Now, we have the Dyson on auto, however, it occasionally spikes back to high and then to fair. Prior to all this- our Dyson was always on green. Is our machine broken now?(Edited by moderator – tags added)
While air pollution is an issue all year round, different seasons see an increase in certain pollutants due to various factors such as temperature, climate, and human activities.SpringSees invisible pollen particles, from trees and grass, can travel for miles sticking to clothing and hair and triggering allergies. In certain regions, fine sand or dry soil particles are blown up through the sky by spring winds and spread through the atmosphere before falling to the ground.SummerSummer is prime time for renovation, but as a result, the colourless gas, formaldehyde, can be released from some forms of furniture, insulating materials, paints, and varnishes. Applying personal care products, such as insect spray, can cause VOC levels to spike, while BBQ can give rise to Nitrogen Dioxide (NO2) and particulate matter like PM2.5. In addition, some air conditioners remove humidity from the air as a natural by-product of cooling, which can impacting comfort within the home. Autumn Brings colder we
I had a issue with my new (purchased last week) HP09 (Heat/Cool/Purifier) where it wouldn’t connect to WiFi on the Unit side (WiFi was animated indicating trying to resync) and in the app (showing not connected). It was showing connected on router side viewing router logs. No issues with WiFi even at the location of the unit (RSSI was 54dBm and download/upload speeds were 220Mbps/21Mbps at location of unit). The only thing that fixed the issue was deleting in app, resetting unit to factory and repairing. However, since adding back to the app ALL READINGS (Voc, PM2.5, PM10, No2 and HCHO) are 0. Prior to the rest there were times the PM2.5, PM10 and VOC were 0 and every once in a while increase to 1 or 2 so not unusual they are 0. And NO2 has only been 0. However the HCHO is 0.000 which is strange because the one week I had it it’s always been low but not all zeroes I think it was like 0.0010 on average. It’s almost like none of the readings are reporting since deleting and resetting eve
I just purchased the HP09 Dyson Formaldehyde Heat/Cool/Purifier. I’ve noticed that when I turn on heat mode the VoCs increase from 1-4 going from good air quality to Fair air quality. Is this normal? Maybe because it’s new? I’ve definitely linked it to the heat mode as with it off for a few hours the VoCs improve then mins after I turn on the heat mode the VoCs jump up. If it is because it’s new how long should it run before that goes away? I know when you have the heater off for several months and you turn on the first time their is a odor, maybe it’s something like that? Anyone else experience this issue?
Hi I have an issue with the VOC levels that are reported as a number from 1 to 9+ scale. What amount of VOC in ppm is present actually for each level in this scale ? This is important to me as an end user to know the absolute numbers that I am comfortable. Dyson categorically say that 0- 3 is good, 4-6 is fair and so on but it is a relative scale based on what amounts of VOC present actually, I don’t know ? This is unlike the formaldehyde levels which are given in ppm units. Appreciate if someone with the knowledge could enlighten us here. Thank you.
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