Popping from Resmed 11

Anyone else get a popping sound with every breath from their AirSense 11? I fill the humidifier every night and firmly push the tank back in. Many nights I awake with my machine popping with every breath. I have to roll over, pull the humidifier tank out, push it back in, and it’s good again for the rest of the night. Not a huge deal, yet very annoying.

At first I thought it was my wife sleeping on her back with her mouth open. It sounds like a bubble popping with every breath, just like my CPAP.

It's called rainout. It has nothing to do with the machine. It's condensation. It's formed when the room temperature is colder than the warm air in the hose. If you are using a heated hose, set it to AUTO. If you are using a standard hose, get a cover for it and lower your humidity or increase the temp of the room.

I hear what you’re saying but I don’t think that’s exactly it. I’ve had rainout in the past and I just hold the hose up high for a few seconds and it stops. To me that’s more of a mild gurgle rather than a pop.

In my case, I can ever so slightly push the water tank in and it stops. Better yet, pull it out an inch and give it a good shove and it probably won’t do it again that night.

This seems to be more and more of an issue lately, it’s annoying and it’s been happening almost every other night. It seems like the tank relaxes just enough that it backs out a little. Maybe it has to do with room temp water getting hot in the humidifier causing things to move?? If I had to take a wild guess, maybe it’s that clear bellow that goes between the tank and the machine?

I have a DreamStation 2 that quietly 'pops' during breathing which seems to go away when I change out the filter. I think a semi-clogged filter doesn't let the machine 'breathe' fully and the changes from inhalation/exhalation cause the attached humidifier tank or its cover move slightly making a slight 'pop' sound due to exhale pressure working against the machines blower pressure and a slightly clogged filter.

That’s a good suggestion, but I just changed my filter. One change I did make was remove one of those supposed bacteria filters. Everyone raved about those but I don’t get it. It restricted the flow a little, and 6 weeks later, it still looks new. I do however triple filter my HVAC system.

I had to replace the seal on the machine that seals the air going into the water reservoir. It's called a air outlet adapter and cost me $11.40 at Direct home medical online. It was really easy to change out and the noise stopped after I replaced it.

Is the seal the clear bellows on the tank, or is it in the machine itself?