4 ms·

Even if not cleanable, the machine isn't going to actually know if they need to be replaced or not. It will depend on how dirty the air was and how much stuff g

Even if not cleanable, the machine isn't going to actually know if they need to be replaced or not. It will depend on how dirty the air was and how much stuff got filtered out. Normal air purifiers would have a reset option to reset the timer.

okasaki 3y ago
Indeed, but the OP says he's cleaned it several times, so it "should be good". What I'm saying is that you're not supposed to clean them.
- kbelder 3y ago
  Perhaps, but that's the owner's decision to make.
  - okasaki 3y ago
    I mean, I guess? But that's just a thought-terminating cliche. You're not supposed to clean the filters because that's not how it works.
c_o_n_v_e_x 3y ago
>the machine isn't going to actually know if they need to be replaced or not The machine can know if it measures differential pressure across the filter. If the DP across the filter is too high (indicating a clogged filter), the filter needs to be replaced.
- jsheard 3y ago
  I know for a fact that my Levoit unit isn't that sophisticated because when it asks you to replace the filter there's simply a button which resets the filter life back to 100% that you're supposed to press after changing it - if it were actually doing anything clever to determine the state of the filter then you wouldn't have to tell it that it's been replaced, it would be able to tell on its own. I suspect it's nothing more than a timer which triggers the warning after running for some hardcoded number of hours.
- tapland 3y ago
  Can this machine know that? A machine could, but is this machine sophisticated enough to do that? Why do we play around with hypotethical scenarious where this warning message on another device might not be shitty DRM?
- mewse 3y ago
  Are you stating that this specific machine actually does this, or are you just theorycrafting that a hypothetical machine could do this?
  - c_o_n_v_e_x 3y ago
    I just went through the product’s FCC certification photos which gives you nice pictures of the product internals. AFAICT, there were no readily obvious DP sensors to be found.

okasaki 3y ago

Indeed, but the OP says he's cleaned it several times, so it "should be good". What I'm saying is that you're not supposed to clean them.

kbelder 3y ago
Perhaps, but that's the owner's decision to make.
- okasaki 3y ago
  I mean, I guess? But that's just a thought-terminating cliche. You're not supposed to clean the filters because that's not how it works.

c_o_n_v_e_x 3y ago

>the machine isn't going to actually know if they need to be replaced or not The machine can know if it measures differential pressure across the filter. If the DP across the filter is too high (indicating a clogged filter), the filter needs to be replaced.

jsheard 3y ago
I know for a fact that my Levoit unit isn't that sophisticated because when it asks you to replace the filter there's simply a button which resets the filter life back to 100% that you're supposed to press after changing it - if it were actually doing anything clever to determine the state of the filter then you wouldn't have to tell it that it's been replaced, it would be able to tell on its own. I suspect it's nothing more than a timer which triggers the warning after running for some hardcoded number of hours.
tapland 3y ago
Can this machine know that? A machine could, but is this machine sophisticated enough to do that? Why do we play around with hypotethical scenarious where this warning message on another device might not be shitty DRM?
mewse 3y ago
Are you stating that this specific machine actually does this, or are you just theorycrafting that a hypothetical machine could do this?
- c_o_n_v_e_x 3y ago
  I just went through the product’s FCC certification photos which gives you nice pictures of the product internals. AFAICT, there were no readily obvious DP sensors to be found.