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Another winter power outage question. Please help.
#1
Hi,

I have a ResMed Aircurve 10, with 2 97ah, deep cycle marine batteries ready to go. I know it's best to turn off the heated hose and humidifier, but breathing sub zero cold air might not only hurt, but it could possibly cause frost bite. How can I heat up the intake without hurting myself?

I thought about hand warmers, but I worry that the chemical ones might cause a problem. There are battery powered ones, but do you need to be holding it for it to work? I was thinking I could place one of them on a towel, near my air intake.

What do you think? Thank you, kindly.


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#2
(12-18-2015, 12:58 PM)JVinNE Wrote: Hi,

I have a ResMed Aircurve 10, with 2 97ah, deep cycle marine batteries ready to go. I know it's best to turn off the heated hose and humidifier, but breathing sub zero cold air might not only hurt, but it could possibly cause frost bite. How can I heat up the intake without hurting myself?

If you actually have sub-zero temperatures in your house, you might want to get a generator to run your furnace. The hose only raises the temperature a little, it's not going to take 0 degree air and make it 100 degrees.



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#3
With two 97 Amp-Hr batteries you could run for quite some time with humidifier and heated hose on.
I'd guesstimate you would half your run time with the extra load.

How long do you think you might be without power?

For everyone, now is the time to make sure you have a backup plan.
On the west coast, el niño, may bring strong storms this winter.
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#4
(12-18-2015, 01:03 PM)Terry Wrote:
(12-18-2015, 12:58 PM)JVinNE Wrote: Hi,

I have a ResMed Aircurve 10, with 2 97ah, deep cycle marine batteries ready to go. I know it's best to turn off the heated hose and humidifier, but breathing sub zero cold air might not only hurt, but it could possibly cause frost bite. How can I heat up the intake without hurting myself?

If you actually have sub-zero temperatures in your house, you might want to get a generator to run your furnace. The hose only raises the temperature a little, it's not going to take 0 degree air and make it 100 degrees.

It has happened where it was about 2 degrees f in the house, during a power outage in a snow storm. Unfortunately, I don't own the house, and I worry that if I run a generator, someone might steal it; backyard of house is accessible.

Does anyone know the power draw on a ResMed Aircurve 10, ASV? I've tried to find the specs online to no avail.
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#5
One of our members from Norway created a calculator to determine run hours for the Resmed S9 with and without humidifier. Power demand is going to be effectively the same for the Airsense 10.

I just wish he had put these all in one thread.

ResMed S9 with humidifier H5i and climate control hose.


S9 on 12V battery, no humidifier


This search came up with a lot of useful responses on Apneaboard.
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#6
Here is the link to the latest ResMed Battery Guide. Nothing I can see about the AirCurve, though.

http://www.resmed.com/content/dam/resmed...lo_eng.pdf

Dave
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#7
With the humidifier, each battery should get you just about 2 nights. You might get slightly less because there's an efficiency loss going from 12 to 24 volts, which the machine needs, and while not a huge loss, very cold temperatures cost battery capacity. 0 degrees F will reduce the battery capacity by about 20%.

You can get a full night on each batter, with humidifier and heated tube if you have one, with a good bit "left over". If you leave the humidifier and heated tube off, and your pressure isn't too high, you should get 2 nights on each battery.

While not an exact comparison, I get 2 nights from a 100A/H battery with a Respironics APAP running 15-20, with the humidifier on high.

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#8
Too cold to breathe?

How do other folks that are not on CPAP deal with the issue? It is no different for you with a CPAP than it would be for them.

And as to heated humidification - how do you get or store liquid water for your heated humidifier in sub zero conditions? If you get liquid water at those temps, I kind of doubt that the heated humidifier would make much headway at keeping at a "comfortable" temp or maybe even free of ice.

Same temperatures, same humidity with or without CPAP. Are you in the cold cold house during waking hours? How do you pre-heat your air then? I don't think this is an issue.

OMMOHY
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