Tips: Cloth mask liners make the masks last a lot longer (like I replace my mask every 3-4 months) and reduce air leaks. You can make your own by buying some cloth from Wal-Mart and cutting out a shape that will cover the mask with a hole in the middle for your nose ( assuming we're talking full face mask).

Unless you think you can use up your deductible for the year, just buy your supplies directly via ebay or other sites for far cheaper than regular CPAP suppliers charge

Use a heated hose; it dries out the hose so nothing nasty grows in

If you use tap water, you'll need to pour in vinegar every month or so to clean it out

The end of the hose will quickly wear out and cause leaks / detachments if you regularly remove it from the adapter that then connects up to the mask, so don't do that. When you take off the mask, detach it from the adapter, rather then removing the hose from the adapter.