Can e-cigarettes / vaping set off smoke detectors?
- By
- Aparna Patel
- |
- 3 Aug, 2023
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Late answer but yes. My vape has set off my smoke alarm twice in the 5 months I’ve lived at my current address which has smoke detectors in every room.
Some juices produce more smoke than others. In the first instance, I had the fan set to low so it didn’t circulate the air as well. The 2nd instance was with a new juice that produced much more vapour than others and I got carried away even with the fan on high speed.
I ve had two alarms set off in two different hotels while vaping (one in Panama where vaping is forbidden by a executive power decreet). But both times were with birnt puffs. So that’s the only thing you habe to be careful with I guess. I assume that a burnt puff has the same chemical composition as any burning smoke.
Yes you can set one off. I just did it in my room. I vape in there all the time, and never had a problem before. And I wasn’t blowing the vapor at the smoke detector either. I*’m not sure, but I think the detector is an optical.
Like some others here, I was sceptical of whether electronic cigarettes could set off smoke alarms, so performed a test. The answer is yes – at least if you blow a big cloud of vapour directly into a smoke alarm (see video here!)
Modern fire alarms shouldn’t be triggered by a small amount of vapour, or even cigarette smoke, but it does happen, as several friends have testified while one Reddit commenter was fined $200 after vaping in a hotel room (read the full story on Reddit here).
Particles in e-cig vapour are thought to be larger than those found in steam and are therefore more likely to set off fire alarms. In addition, it’s also known that steam machines containing propylene glycol can cause fire alarms.
In short, e-cigs don’t set off fire alarms often, but it possible, and it has happened.
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I have smoke detectors in my camper van and vaping does set them off if I forget and blow the vapour in their direction.
In the case you mentioned I’d be very careful about vaping around yours and $1000 fine is a a bit worse than me having to hit the reset button.
The answer is ‘it depends’ – on the type of smoke detector an how close the smoker is to the alarm, how much vapor is produced etc.
For the optical sensor type firealarms here is a demonstration they can be set off by vapor – while here is one that demonstrates they’re not. I.e. depends on how much vapor you have and how often it is blown into the detector.
That said, it seems quite unlikely such a sensor would be triggered by vapor in normal circumstances – but as you mention in comments, sitting on top of a bunk bed, with a low ceiling may be a different matter.
More modern sensors based on ionization/CO detection should not be triggered by vapor, see here for instance.
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