Family member has been diognosed with mild asthma.
Lives in a house with hot air heating.
House about 30 yrs old.
Was thinking of suggesting that they have the hot air
ducts cleaned out by one of those services that do it.
But, there does not seem to be any kind of agreement as
to whether this is actually a good idea or not.
Counter argument to doing it seems to be that the lint, etc. by now is
pretty well adhered to the duct's wall's, and you are better off to not
disturb it. Just live with whatever comes loose in normal usage, and use
a good furnace filter.
Makes some sense, I guess, but ... ?
What's the latest thinking on this subject ?
Any thoughts on this would be most appreciated.
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My house is over 100 years old and used to be extremely dusty so I had
one of those places come out. They cleaned the vents but that did
nothing to eliminate the dust.
About a year later I was working in the basement and bumped something
into one of the hot air ducts and it thumped (made a non-hollow sound)
It was an elbow which I took apart and found clogged with probably fo
years worth of debris. After I disassembled and cleaned it, it actually
was less dusty in the house.
So if you hire one of those services make sure they really get
everything! Then...got one of those electrostatic filters.
I have/had such severe asthma that often triggered by a cold would end up
down for over a month at a time [hospital grade down]. Lungs have so much
scar tissue that during my draft physical for the Vietnam War, the doctor
came over and very seriously said, "We don't want to frighten you, but we
don't want you. We're giving you a 4F rating." More recently during my
pilot's physical exam my doctor would listen to my lungs and tell me to
cut down on my smoking. "Doctor, you know I don't smoke." He'd then give
that "hmmmm" and check more but not say anything.
That's background. So under insurance claim was allowed to purchase an
electrostatic air cleaner! Fairly expensive too. I put it in the corner of
our bedroom, turned it on, laid down on the bed. After it ran a few short
moments; it literally felt like someone had been sitting on my chest for
years got up and left! The effect was THAT dramatic.
I share ALL those details to convince you your friend should get portable
electrostatic cleaners, place them EVERYWHERE, AND clean out the crud from
his heating vents. But form experience, if they don't put something
mechanical in there, fire 'em. An air blast won't do it!.
Combine the cleaners with having the ducts
cleaned out, I'd expect some improvement.
My problem turned out to be stuff growing
in the tray of my window AC. I had to take
it all apart, clean it, and clorox it. That
helped, in my case. I also rerouted the
condensate, so it doesn't collect in the
tray any more, it runs dry. I know about
slinger rings, and evaporative cooling for
the condenser, but I prefer not having slime
Christopher A. Young
Learn about Jesus
Well, it always seemed to me that if the ducts were really spewing dust, th
ey would be getting cleaner and cleaner. Either that or the dust would be s
ticking in place and not causing problems. I don't give duct cleaners much
credibility. I recommend the electrostatic filter route along with sealing
cracks from the outside. If you have negative air pressure in the house, it
could be drawing dust from the attic though cracks or electrical sockets.
Years ago CMHC had a report released on duct cleaning effectiveness....
"not worth it, save money" was conclusion. I always had at least 16x2x5
filter or Honeywell electronic
filter with spare elements(one being used, one cleaned and as spare) No
dust problem in the house even with dog and cat.
dust, they would be getting cleaner and cleaner. Either that or the dust
would be sticking in place and not causing problems. I don't give duct
cleaners much credibility. I recommend the electrostatic filter route
along with sealing cracks from the outside. If you have negative air
pressure in the house, it could be drawing dust from the attic though
cracks or electrical sockets.
I have heard people talk about setting a humidifier next to the intake
during the winter and wondered if that might create problems with mold.
Not when the RH in the hous without the humidifier drops down to 15%
or less. It has to get over 70% to even begin to consider mould
issues. I like about 55% +/- for comfort. Currently sitting at 24C and
58% RH in my basement office. Wife just did some laundry and I just
washed the air filter with hot water, so it is up a few points.
EPA does not recommend that air ducts be cleaned except on an as-needed basis because of the continuing uncertainty about the benefits of duct cleaning under most circumstances.
On 10/2/2014 10:59 PM, Tony Hwang wrote:> Stormin Mormon wrote:
> There was a report out a few years ago written by CMHC(Canada Mortgage
> and Housing Corporation) about the effect of duct cleaning. Conclusion,
> "not that effective,
> save your money". I always lived in a house built per our specs. Never
> lived in old house.
> Always forced air heating/cooling system with 16x25x5 Merv 10 or better
> filter/or Honeywell electronic filter. Never had dust issue(s) in the
> house even with cat and dog.
> My son was born with serious asthma, until he reached pre-teen he
> carried two different
> puffers all the time. But since Jr. high he did not need them. He
> started playing Tenor Sax in the band for 6 years and now at age 30,
> still does in addition to guitar and drum playing. Good diet, natural
> supplement, excercise got rid of that asthma for good. We
> conquered asthma in my house.
That's encouraging. Hope the OP with the family
member can benefit from your success.
This constitutes a legal deletion and
does not have to be reported to command.
Years ago CMHC looked into it and released a report. "Not worth it, save
your money" was conclusion. I always use 16x25x5 at least MERV 10 filter
or Honeywell electronic
filter with two sets of elements(one in use, one cleaned and as spare)
Have a big dog and a cat in the house as well. No dust problem.
I only know one family that had duct cleaning
done, a guy from my church congregation. He was
thrilled with the service, and very pleased he
did. I don't remember which company. Guess I
could ask, if you wish. I'm sure he'd know.
I've never found dirt when taking ductwork apart,
aside from the area around the vent where dust can
I'd spend the money on a better furnace filter and
maybe an air cleaner. The HEPA air cleaners work well,
in my experience. I had one once and it made the air
in the room feel fresh, like outside. The trouble with
that, though, is that it's local to one room and it's
| Family member has been diognosed with mild asthma.
| Lives in a house with hot air heating.
| House about 30 yrs old.
| Was thinking of suggesting that they have the hot air
| ducts cleaned out by one of those services that do it.
| But, there does not seem to be any kind of agreement as
| to whether this is actually a good idea or not.
| Counter argument to doing it seems to be that the lint, etc. by now is
| pretty well adhered to the duct's wall's, and you are better off to not
| disturb it. Just live with whatever comes loose in normal usage, and use
| a good furnace filter.
| Makes some sense, I guess, but ... ?
| What's the latest thinking on this subject ?
| Any thoughts on this would be most appreciated.
| This email is free from viruses and malware because avast! Antivirus
protection is active.
On Friday, October 3, 2014 9:46:54 AM UTC-4, Mayayana wrote:
I find a WARM MIST vaporizer to be helpful.
NOT a cold mist slinger wheel or ultrasonic type, these CREATE dust.
Unfortunalty the warm mist vaporizer that actually boils the water also collects all the minerals inside itself and requires a lot of maintenance. I don't know of a good alternative however.
On 10/3/2014 10:08 AM, email@example.com wrote:
> type, these CREATE dust.
boils the water also collects all the minerals
inside itself and requires a lot of maintenance.
I don't know of a good alternative however.
In the years I did heating and AC installs,
I did see a lot of dusty ducts. So, it can
happen in forced air systems.
How's this about cold mist vaporizer creating
dust? I thought matter was neither created nor
destroyed. Is the dust dissolved in the water?
| How's this about cold mist vaporizer creating
| dust? I thought matter was neither created nor
| destroyed. Is the dust dissolved in the water?
Perhaps it should be noted that these are two
different topics. The OP was talking about dust,
not humidifiers. Personally I like humidifiers, but I
actually like the damp, moldy quality of humidified
air. With enough humidifying mold or some kind
of fungus grows in the air. To me the dampness
seems to open the lungs and the mold doesn't
bother me, but people with asthma are often
hypersensitive to mold spores.
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