Skip paying full price on thecpapshop. Most of their sales exclude machines due to ResMed’s strict MAP pricing, so you usually have to add them to your cart to see the actual markdown. For masks and hoses, just make a burner email to grab their pop-up 15% welcome code. Works every time.

They take standard cards and PayPal, but you can also run your FSA or HSA card directly as credit at checkout. If you're buying a machine, use PayPal Pay in 4 to split it up. Also, never pay full price on supplies—they almost always have a 15% to 20% coupon code floating around.

Their referral program is legit for restocking supplies, but don't expect it to work on actual machines. ResMed’s MAP pricing blocks most discounts. Just grab your link from your account dashboard. When a friend uses it at checkout, they get a discount and you get store credit for cushions, hoses, or filters.

Honestly, don't email them if you need to cancel. Their warehouse moves fast. Call their 866 number or jump on live chat the second they open. Once a tracking label prints, customer service won't stop it, and you'll get stuck paying return shipping just to send an unopened box back.