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Thread Number: 26351
filters vs no filters clean |
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| Post# 295440 , Reply# 1 8/25/2014 at 23:43 (3,524 days old) by godfreys_guy (Melbourne, Australia) | ||
Depends on LOTS of factors...
People with Allergies should really have a unit with at least a HEPA 12 filter, but there is no point unless the system is sealed. The other thing is that the filter will remove carbon dust from the motor - there is debate as to whether or not this is a carcinogen as well.
I think that the airflow restriction has been counteracted by the more breathable spun fibre bags that are now common place vs the previous paper bags. I think some machines with very good bags and collars that don't leak like Miele could do without an extra HEPA filter but meh.... My Sauber Intelligence (Aerus Platinum) has not 1, but two H13 Filters and it's waterlift is huge. | ||
| Post# 295492 , Reply# 4 8/26/2014 at 11:50 (3,523 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2) | ||
"Using HEPA bags and paying attention to the little gaskets at the bag and hose attachment the inside of the vac stays nice and clean."
Yes, but only if you can access those areas. Some vacuums have permanent grids that can't be taken off - especially older cylinder vacs that have that HEPA filter on board but a film of dirt underneath the grid that the filter sits in can't be got at properly. Also, one of the "joys" I was never that keen on with vintage vacuums, particularly the Classic Hoover uprights is that in the UK, it is hard to get any more than 2 ply filtration paper dust bags for the classic Hoovers. In this day and age it would have been if Hoover Europe made high filtration bags for all those owners who have hung onto their vintage vacuums. As usual though, planned obscelence strikes again.... | ||
| Post# 295500 , Reply# 6 8/26/2014 at 14:22 (3,523 days old) by matt8808 (Teesside - North East - UK) | ||
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^^^^ that made me laugh so much! What a quote!!!! | ||
| Post# 295591 , Reply# 7 8/27/2014 at 05:43 (3,523 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2) | ||
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Oh aye ignorance is bliss isn't it
What a fun world you must have making your own "improved" dust bags and filters. Is what you say to yourself when you get out of your bed in the mornings?
Have you spared any thought to what might happen if the vacuum's exhaust can't expel air because of the added filters you have made yourself? That can't be safe long term. Sometimes brands do make "leaky" parts intentional if the exhaust part on a vacuum isn't large enough to put out all of the hot air. Something that from time to time, you should consider yourself when it comes to make those expressions in your responses. This post was last edited 08/27/2014 at 08:33 | ||
| Post# 295657 , Reply# 9 8/27/2014 at 10:49 (3,523 days old) by sptyks (Skowhegan, Maine) | ||
Thoth, You need not worry. The Kirby Hepa filtration is at least equal than that of the Riccar. The Kikrby, being a "Direct Air" machine has much more airflow than the Riccar and as such it has a much larger filter bag than the Riccar. This means that the cleaning prformance of Kirby is better and you will not need to replace the HEPA bag in the Kirby nearly as often than for the Riccar. | ||
| Post# 295669 , Reply# 10 8/27/2014 at 12:14 (3,522 days old) by thoth () | ||
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Sptyks, What about concerns of the air that the Kirby releases that does not get to go through the HEPA bag since it is not sealed? Are there any tests that have been done to compare the filtration of a Kirby vs a clean air upright? | ||
| Post# 295675 , Reply# 11 8/27/2014 at 12:53 (3,522 days old) by sptyks (Skowhegan, Maine) | ||
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Thoth, The Kirby does have a sealed HEPA bag. If the HEPA bag is installed properly, you will not find any dust whatsoever on the inside of the outer cloth bag assembly.
I am not aware of any test data that measures the filtration differences between Kirby and any "Bypass air" vacuums.
The motor cooling exhaust exits on the left side, bottom half of the motor housing and has proven to contain only minute negligable carbon from the brushes. Please re-read DT's quote from above:
"Based on how many decades brushes last on the vacuums I have owned or the used beaters I have bought to refurbish, I don't think brushes wear fast enough to emit enough carbon or anything else for that to be a factor. I have had vacs that had such hard use that rewinding the cord has worn right through the plastic underbelly of the vac! Yet when examining this same vac for motor wear (the motor was so packed with dirt you couldn't see the fields or the commutator winding, even the brush holders were packed with dust) I found the brushes almost unworn. This was one of those Chinese motors from Sip Cinderson in an older Progressive vac. Even a thirty one year old Kenmore my parents used routinely all these years and me subsequent to them, and the brushes have more than half their length. I think brush wear as a source of an air contaminant is greatly over rated. " | ||
| Post# 295677 , Reply# 13 8/27/2014 at 13:16 (3,522 days old) by thoth () | ||
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Can't edit my post... I'm not worried about dust from the brushes. Good to know it's a minute amount of dust too. | ||
| Post# 295694 , Reply# 15 8/27/2014 at 14:17 (3,522 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2) | ||
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| Post# 295716 , Reply# 16 8/27/2014 at 15:43 (3,522 days old) by DesertTortoise () | ||
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I'm an analyst for Naval Air Systems Command in the engineering competency Sebo_Fan and, yes, engineering is very much about making compromises. Cost, schedule, and performance are all tradable and subject to a great many compromises. | ||
| Post# 295735 , Reply# 17 8/27/2014 at 17:38 (3,522 days old) by sptyks (Skowhegan, Maine) | ||
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Thoth, No problem on the questions you have.
The Kirby motor cooling air enters and exits from a vent on the left side of the motor housing. You can feel a slight breeze of warm air coming from this vent when the motor is running. This air is generated by a seperate cooling fan on the motor armature and is not part of the main vacuum exhaust. | ||
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