Resmed Aircurve Water Tank Mod

Aretino · Post by **Aretino** » Fri Jan 21, 2022 9:35 am

Has anyone modified the Resmed Arcurve water tank in a way that makes filling easier? My thought is to make a 1/2" hole in the top of the tank to allow filling via a funnel. The new hole in the water tank could then be plugged with a rubber stopper. This would eliminate the need for removing the tank and opening the lid for filling and then sliding the tank back into position.

Julie · Post by **Julie** » Fri Jan 21, 2022 9:49 am

But if any ever accidentally spilled over the edge of the tank it could affect the rest of the insides.

chunkyfrog · Post by **chunkyfrog** » Fri Jan 21, 2022 9:52 am

Julie wrote: ↑
Fri Jan 21, 2022 9:49 am
But if any ever accidentally spilled over the edge of the tank it could affect the rest of the insides.

(Gasp!)
You are absolutely RIGHT!
All the seals are in the interior. Water would go directly to the heating plate.

LSAT · Post by **LSAT** » Fri Jan 21, 2022 10:08 am

If this is such a problem, maybe you should turn off the humidity....then you wouldn't need to fill it.

chunkyfrog · Post by **chunkyfrog** » Fri Jan 21, 2022 10:54 am

Topping off the tank when you are not through sleeping is easy.
Just stop the machine, remove and open the tank, and pour.
No need to remove your mask; and you don't need a lot of light.
There is no need to over-engineer this little thing.

SleepGeek · Post by **SleepGeek** » Fri Jan 21, 2022 11:16 am

Aretino wrote: ↑
Fri Jan 21, 2022 9:35 am
Has anyone modified the Resmed Arcurve water tank in a way that makes filling easier? My thought is to make a 1/2" hole in the top of the tank to allow filling via a funnel. The new hole in the water tank could then be plugged with a rubber stopper. This would eliminate the need for removing the tank and opening the lid for filling and then sliding the tank back into position.

Do yourself a favor and make sure you have a spare tank before you make any changes.

Personally, I wouldn't do that. Esp. where I keep mine I wouldn't want to risk any spillage.

I don't use a funnel but pour directly out of the bottle into the holes already in the tank w/o opening it up.

Only Mod I made is the black marker line shown in my Avatar.

chunkyfrog · Post by **chunkyfrog** » Fri Jan 21, 2022 11:39 am

Sleepgeek:
I will try using the holes already in the tank--good idea!
I will, however put my marker line where the water line lands
when the tank is on its right side for filling.

EDIT: I just refilled the tank--and guess what!
The line already exists!
It is at the point where the tank starts to widen to go out of the Airsense cabinet!
Resmed is full of surprises. Good ones, too!

zonker · Post by **zonker** » Fri Jan 21, 2022 6:24 pm

Aretino wrote: ↑
Fri Jan 21, 2022 9:35 am
Has anyone modified the Resmed Arcurve water tank in a way that makes filling easier? My thought is to make a 1/2" hole in the top of the tank to allow filling via a funnel. The new hole in the water tank could then be plugged with a rubber stopper. This would eliminate the need for removing the tank and opening the lid for filling and then sliding the tank back into position.

someone made a mod to allow one to add a bigger tank that feeds directly into the machines tank. but i'll be damned if i can find it now.

let me try to call dogslobber in here. he'll know-

Dog Slobber wrote: ↑
Mon Jan 17, 2022 1:50 pm

Dog Slobber · Post by **Dog Slobber** » Fri Jan 21, 2022 6:30 pm

Refilling the tank without dumping the water is fine if one uses distilled water.

But, if one uses tap water, it will dramatically increase the mineral buildup. I use tap water, dump and refill every night, mineral build up isn't a problem.

zonker wrote: ↑
Fri Jan 21, 2022 6:24 pm

someone made a mod to allow one to add a bigger tank that feeds directly into the machines tank. but i'll be damned if i can find it now.

let me try to call dogslobber in here. he'll know-
Dog Slobber wrote: ↑
Mon Jan 17, 2022 1:50 pm

Here's the topic:
https://www.cpaptalk.com/viewtopic.php? ... 0#p1276236

zonker · Post by **zonker** » Fri Jan 21, 2022 6:31 pm

Dog Slobber wrote: ↑
Fri Jan 21, 2022 6:30 pm

Here's the topic:
https://www.cpaptalk.com/viewtopic.php? ... 0#p1276236

thanks for the quick service!

SleepGeek · Post by **SleepGeek** » Fri Jan 21, 2022 7:09 pm

I use this HC 300 tank in passover mode and have been for quite some time.
https://www.cpaptalk.com/viewtopic.php? ... r#p1400135

SleepGeek · Post by **SleepGeek** » Fri Jan 21, 2022 7:13 pm

chunkyfrog wrote: ↑
Fri Jan 21, 2022 11:39 am
Sleepgeek:
I will try using the holes already in the tank--good idea!
I will, however put my marker line where the water line lands
when the tank is on its right side for filling.

EDIT: I just refilled the tank--and guess what!
The line already exists!
It is at the point where the tank starts to widen to go out of the Airsense cabinet!
Resmed is full of surprises. Good ones, too!

Exactly, my mistake the lines in my avatar were computer added to highlight the wording for a select few here.

chunkyfrog · Post by **chunkyfrog** » Fri Jan 21, 2022 8:04 pm

You must have a regular tank--the cleanable tank has no such nonsense on it.

GrumpyHere · Post by **GrumpyHere** » Fri Jan 21, 2022 8:23 pm

Dog Slobber wrote: ↑
Fri Jan 21, 2022 6:30 pm
Refilling the tank without dumping the water is fine if one uses distilled water.

But, if one uses tap water, it will dramatically increase the mineral buildup. I use tap water, dump and refill every night, mineral build up isn't a problem.

zonker wrote: ↑
Fri Jan 21, 2022 6:24 pm

someone made a mod to allow one to add a bigger tank that feeds directly into the machines tank. but i'll be damned if i can find it now.

let me try to call dogslobber in here. he'll know-
Dog Slobber wrote: ↑
Mon Jan 17, 2022 1:50 pm

Here's the topic:
https://www.cpaptalk.com/viewtopic.php? ... 0#p1276236

From the picture, the additional reservoir acts as a very inefficient passover humidifier once the water level drops below the height of the lower tube.

A better design choice places the lower tube just above the level of the metal plate of the OEM tank.

SleepGeek · Post by **SleepGeek** » Sat Jan 22, 2022 8:54 pm

SleepGeek wrote: ↑
Fri Jan 21, 2022 7:09 pm
I use this HC 300 tank in passover mode and have been for quite some time.
https://www.cpaptalk.com/viewtopic.php? ... r#p1400135

For those visual learners this Mod requires "No Handtools" - I fill up once a week. I use No Heat, No Heated hose.

: Humidifier3 20220122_171045 (2).jpg (804.62 KiB) Viewed 13216 times

Resmed Aircurve Water Tank Mod

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