it took a couple of time to get it to working right. It is great i do not have to wake up at 1am to refile the reservoir. Respiratory Therapist do not even know this exist at least mine didnt

I was very excited to receive my Cspring, hooked it up but the water tank leaked air. They provide you a modified water tank with input water hose and two sensor clamps. I emailed Cspring and they reponded ... like within 15 min of my email!! Replacement tank was sent quick and they gave me a return to send back the leaky tank. Plugged the new, new water tank and BAM! Sleeping like a charm ever since. Csprings consistantly keeps my humidifier water tank filled to at least the MIN line and I have yet to suck dry air since I bought it! A dream come true. Love the big 3-liter water tank it comes with. One thing to note, there is a light inside the white tank that glows "green" all night. The tank also has a night light feature you can tap on or off. But the green light inside the tank is always on (and visiable in a dark room). I sleep with my eyes closed and the light is very low, so not an issue. Ideally, I would suggest to Cspring to include a dark sleeve for folks that don't want the extra light, but that's a nit. Bottom line, LOVE IT!!

I had to write twice to the seller's "support" staff to get the thing set up, but it seems to work as expected. I'm not impressed, however, with the flimsy "clips" that are supposed to attach the two sensors to the CPAP's water tank. Assuming you can get them to work at all, they'll quickly become unusable when you have to disconnect the sensors to clean the system. They say the clips are consumable items that you can replace (at a price). Can you say "duct tape"?

I love using this washer for my mask. I wait until I have about four face shields on there then I start the process and just watch it go. It saves me time from hand washing them!

First, customer service is outstanding. Had a minor issue with water tank leaking air. But was replaced within a few days of letting them know. Now the device works like a dream and I don’t have to ever worry about running out of water again.

Very happy with the performance, so far.

I was having trouble getting my water chamber to fill correctly and called. I sent in a picture of my sensors. This company has great service and I was told how to remedy it and they sent new sensors! Now no problem and working like a dream! Th CSpring

This device solved my problem of my CPAP machine's humidifier running out of water in the middle of the night every night. I can't think of a better way to solve that issue outside of Resmed redesigning their machine.

It does have one rather frustrating aspect, though unrelated to its function - you can either have the blindingly bright white LED power indicator and in-tank "mood lighting" on or off - when it is on, it lights up the room, and bright white is the absolute worst color temperature for sleep, like having an always-on mini wake light on your nightstand; but if you set the light to off, the unit is visibly indistinguishable from being entirely turned off, so, if it were to lose power for any reason, you would have no way of telling beyond your tank being empty in the morning.

I don't know how anyone thought it was a good idea to have the power indicator be a bright white halo of doom, or to have disco lights in the tank. All it needed was a simple, small and dim LED, ideally red so as to not mess with your circadian rhythm or dark adaptation, to show that yes, the device is on. But the only options available are party-time illumination or nothing at all.

Don't get me wrong, everything related to its actual functional purpose is great - but I shouldn't have to sleep with a sleep mask every night because of my CPAP water tank.

I've only used the device for 5 nights. So far, all is as advertised. I'm hoping the same is true over the long haul. The construction looks fairly good.

I placed the Spill Protection Tray under the CSpring MK2 and it is the right size, right shape, right design, right price. It gives peace of mind and, having tested it for a couple of weeks, I will now purchase a 2nd one for the ResMed CPAP machine.

Working great

Sullivan Leigh was amazing with customer service & as a knowledgeable resource! Amazing experience thank you Sullivan!

I love the spill tray. When you remove the lid to fill the tank, the tray catches the water droplets that collect under the lid

XL CPAP-BiPAP Water Chamber: CSpring MK2® Automatic Refilling System

XL CPAP-BiPAP Water Chamber: CSpring MK2® Automatic Refilling System