I also have an Airsense 10 CPAP machine. Regarding the 2 hoses, is the grey one longer than the clear one? If so, the longer grey tube is the one that hooks up directly to your CPAP machine & if it’s a heated hose you will see what looks like an interface on the thicker end that you will need to line up with the prongs in the hose port on the machine. Make sure you have it firmly plugged in. (BTW, I keep the bottle right between my bed & the night table just so it’s out of the way for tripping over & it’s always handy for refilling the water reservoir.)
The smaller clear hose is to be attached to the longer grey hose on the opposite end (not the plug in end). This clear hose sometimes requires a very short clear tube to connect the two hoses, but I have found that the heated hose for the Airsense 10 doesn’t require the short tube connector as the heated hose already has a snug connector to fit the shorter hose. I just keep that short clear hose in the machine’s travel bag because you never know if it will be needed years down the line.
And you may not need to use the shorter clear hose with some masks. Look at the diagram that comes in the package with the mask to see if it’s needed. Personally, I like having to use the two hoses together as it lets me move more easily in bed with keeping the hoses under my bedsheets (keeping your hoses under your covers also helps prevent “rain out,” which is when you wake up because you have water going up your nose, which shouldn’t happen when the water reservoir isn’t overfilled, especially if you’re using a heated hose, but from experience it can still happen even then).
I also have to check to see if the power cord is firmly attached every time I fill my machine with distilled water because I have to turn my machine sideways to remove the water reservoir, then straighten the machine facing forward after I have replaced the reservoir & doing this occasionally makes the power cord in the back of the machine to begin to come unplugged. It’s much easier for me to just make a routine of making sure the power cord is firmly attached each night.
Regarding the filters, unless the package says it’s washable (I had this with my previous CPAP machine, but still replaced it yearly), don’t wash it. I usually get 2 packages of filters (=4 filters, 2/package) every 3 months, & so replace my filter every 6 weeks, not the longer period mentioned above). You will want to keep the night table your machine is on as dust & dirt free as possible (meaning no plants on the same table) to extend the life of your filters.
I would also recommend you read the booklets that came with your CPAP machine. It’s an expensive piece of equipment that if yours was covered by your insurance company, most likely can only be replaced every 5 years or whenever the machine finally gives out (my previous machine lasted exactly 5 years & that was with keeping to all the recommendations cleaning & replacement schedules) in order to be covered for a new machine. So, you will want to follow the instructions for cleaning your equipment & the recommended replacement schedule for masks/nasal pillows, filters, & hoses.
When reading the booklets that came with your machine, you will better understand its operation & maintenance. You will learn that you need to let your hoses dry out daily (I rinse mine & hang them over the shower rod to dry out first thing in the morning, & give them a good soapy wash once a week). The mask part or nasal pillows should be washed by hand & left to dry daily & completely replaced every 6 weeks to 3 months depending on the type of mask you are using. Keeping your hoses & mask components clean & dry will prevent them from growing any type of mold or bacteria & making you sick, or from reintroducing to you any virus you may have breathed into the mask/nasal pillows, hose(s) (& possibly the filter) while using them. (Personally, I throw out all nasal pillows/replacement masks, hoses & filters that I have contaminated with a virus like the flu. I like to keep the previous hoses I last used on hand - cleaned & dry - just for cases like this, as the insurance company won’t authorize the supply company to send you new hoses just because they have become contaminated; if you really want them replaced due to contamination/illness ahead of schedule, you will have to pay for them out of pocket). And If you can afford it, there are several machines you can buy (ranging from $100 to $450) that will sterilize the entire mask, hoses, etc. daily (Google “CPAP machine cleaners”).
If you should have further questions about maintenance of your CPAP machine, I would recommend that you call the DME (Durable Medical Equipment) company that supplied your CPAP machine & replacement parts or your sleep doctor’s office to see if they can give you a demonstration on how to clean & replace the various pieces.
Good luck & good health.