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CPAP Machines

CPAP Machines for Sleep Apnea

A CPAP machine treats obstructive sleep apnea by delivering continuous positive airway pressure: a steady stream of air, through a mask, that keeps your airway open while you sleep. In the US, CPAP machines are prescription devices, so you will need a prescription to buy one. Not diagnosed yet? Start with an at-home sleep apnea test.

Types of CPAP machines

  • Fixed CPAP: delivers one set pressure all night. The standard, most-prescribed option.
  • Auto-adjusting (APAP): raises and lowers pressure automatically as your breathing changes. Shop auto-adjusting CPAP machines.
  • BiPAP / bilevel: uses two pressures, higher to inhale and lower to exhale, often for higher-pressure needs or complex apnea. Shop BiPAP machines.
  • Travel CPAP: compact, lightweight machines built for trips. Shop travel CPAP machines.

How to choose a CPAP machine

Your prescription and sleep study guide the choice: the prescribed pressure, whether your doctor specified fixed, auto, or bilevel therapy, and comfort features like a built-in humidifier, ramp, or pressure relief. If you travel often, size and weight matter too. For head-to-head help, read APAP vs CPAP, CPAP vs BiPAP, and our best CPAP machines of 2026 roundup.

Shop by brand

ResMed is the most-prescribed CPAP brand, and as an authorized ResMed dealer we carry its full lineup, from the AirSense 11 to the travel-sized AirMini. Shop ResMed. We also stock machines from React Health (Luna) and Transcend. Building a complete setup? See AirSense 11 bundles.

Price, insurance, and pre-owned

CPAP machines are FSA/HSA eligible, and financing is available at checkout, so you can spread the cost. Want to save? Compare CPAP machines on sale, or consider a pre-owned or refurbished machine. For more, see how much a CPAP machine costs and CPAP financing.
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Common Concerns when choosing the right CPAP Machine

For Side Sleepers

CPAP masks designed to stay sealed as you shift

For Minimalists

Simple, streamlined therapy with no extra bulk

For Travelers

Compact CPAP gear built for life on the go

For Mouth Breathers

Full-face solutions that keep your therapy effective

For Complete Care

Everything you need for better sleep, all in one

FAQs

What is a CPAP machine?

A CPAP (Continuous Positive Airway Pressure) machine treats sleep apnea by delivering a steady stream of pressurized air through a mask, keeping your airway open so you can breathe easily through the night.

What is the difference between CPAP, APAP, and BiPAP?

CPAP delivers one constant pressure all night. APAP (auto-adjusting) raises and lowers the pressure automatically as your breathing changes. BiPAP uses two pressures, a higher one to inhale and a lower one to exhale, and is often used for higher-pressure needs or more complex apnea. Your doctor decides which is right based on your sleep study. See APAP vs CPAP and CPAP vs BiPAP in our guides.

Do I need a prescription to buy a CPAP machine?

Yes. In the US, CPAP, APAP, and BiPAP machines are prescription devices. You can upload your prescription at checkout or have your provider send it to us, and our team can help if you are unsure what you need.

How do I choose the right CPAP machine?

Start with your prescription: the prescribed pressure and whether your doctor specified fixed, auto, or bilevel therapy. Then weigh comfort features (humidifier, ramp, pressure relief) and whether you need a travel-friendly size. Our best CPAP machines roundup and the APAP vs CPAP guide walk through the trade-offs.

How much does a CPAP machine cost, and is it FSA/HSA eligible?

Prices vary by model and features, so check each product page for current pricing. CPAP machines are FSA/HSA eligible, and financing is available at checkout. To save, compare our CPAP machines on sale or a pre-owned option.

Can I buy a used or pre-owned CPAP machine?

Yes. Pre-owned and refurbished machines can be a budget-friendly way to start or back up your therapy. You still need a valid prescription. See our pre-owned and refurbished CPAP machines, and our guide on whether used machines are worth it.

What are the side effects of using a CPAP machine?

Common, usually mild side effects include dry mouth or nose, nasal congestion, skin irritation from the mask, a feeling of claustrophobia, bloating, or headaches. Most are managed with mask fit, humidification, or pressure adjustments. Talk to your doctor if they persist.

What comes included with a CPAP machine?

A CPAP machine typically ships with the device, the power adapter and cable, standard tubing, and a user manual. A mask is usually purchased separately so you can choose the style and fit that suits you, and many models offer a bundle that includes one.
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