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Genuine, doctor-prescribed sleep machines — New and Certified Pre-Owned from $315. Auto-adjusting (APAP) and fixed-pressure CPAP models, with real setup help from our Doral, FL team and free U.S. shipping over $99. Want new, or our authorized pick? New AirSense from $598, or the authorized React Health Luna G3 Auto at $754.
AffirmPay over time — checking your options won't affect your credit score↓Genuine ResMed & Philips · Authorized React Health dealer · Rx required — we make it easy · 4.8★ customer rating
AirSense 11 AutoSet
The CPAP everyone asks for — for hundreds less. A genuine ResMed AirSense 11 (the newest platform), professionally tested and Certified Pre-Owned, backed by warranty by American Oxygen. We keep dozens in stock.
- Auto-CPAP (APAP)
- Built-in humidifier
- WiFi + app
- Genuine ResMed
- Warranty by American Oxygen
- FDA-cleared
CPAP machines at American Oxygen
American Oxygen sells genuine CPAP machines — New and Certified Pre-Owned — from $315, in Auto-CPAP (APAP) and fixed-pressure models. We're an authorized React Health dealer (Luna G3) and stock genuine ResMed (AirSense 10, AirSense 11) and Philips (DreamStation) equipment. All machines are FDA-cleared and a valid prescription is required. Free U.S. shipping over $99, plus in-person setup help in Doral, FL. Need a bilevel? See our BiPAP machines.
Not sure which to pick? Call (786) 755-8063 — real people, English & Spanish. Prescription required; we make it easy.
Shop CPAP machines — find yours fast
🆕 New Machines
4 modelsFactory-sealed with a full manufacturer warranty and FDA clearance. Best if you want the latest platform and the longest coverage.
AirSense 10 AutoSet
Auto-CPAP · built-in humidifier · WiFi · most-prescribed
Luna G3 Auto
Auto-CPAP · built-in humidifier · authorized
Philips DreamStation 2 Auto Advanced
Auto-CPAP · advanced comfort features
AirSense 11 AutoSet
Auto-CPAP · newest ResMed platform · WiFi
♻️ Certified Pre-Owned — the smart way to save
4 modelsProfessionally cleaned, tested and verified, with a new filter. The same therapy for hundreds less, backed by warranty by American Oxygen.
Philips DreamStation 2 Auto
Certified Pre-Owned · Auto-CPAP · lowest entry price
AirSense 10
Certified Pre-Owned · fixed-pressure CPAP
AirSense 10 AutoSet
Certified Pre-Owned · Auto-CPAP · WiFi
AirSense 11 AutoSet
Certified Pre-Owned · newest ResMed platform · WiFi
Masks, tubing, filters & chargers
Everything your machine needs — genuine masks and parts for every brand we sell. The right mask makes or breaks CPAP therapy; if you're not sure which fits, call us and we'll match it to your machine.
CPAP Masks
Full-face, nasal & nasal-pillow — get the right fit
Shop CPAP Masks →Tubing & Hoses
Standard & heated tubing for every machine
Shop Tubing & Hoses →Filters
Disposable & reusable — simple, cheap upkeep
Shop Filters →Chargers & Power
Power supplies, travel & backup batteries
Shop Chargers & Power →How to choose your CPAP: fixed vs. Auto-CPAP (APAP)
Your prescription comes first — then it's about fixed vs. auto-adjusting pressure and comfort features.
| Choose this if… | Our pick | Why |
|---|---|---|
| Your Rx specifies one steady pressure | AirSense 10 (fixed) — from $359 CPO | Simplest, most affordable — genuine ResMed. |
| You want auto-adjusting pressure (most popular) | Luna G3 Auto $754 · AirSense 10 AutoSet $598 | APAP adjusts through the night; Luna G3 is our authorized value pick. |
| Your doctor prescribed a BiPAP / bilevel | See our BiPAP machines → | Bilevel (VAuto / ST / ASV) lives on our separate BiPAP page. |
| You fly or travel often | See our travel CPAPs → | Pocket-size, airline-friendly travel models are on our Travel CPAP page. |
| You want the best value | Certified Pre-Owned AirSense / DreamStation — from $315 | Same therapy, professionally tested, warranty by American Oxygen. |
Your prescription tells you which type and pressure you need. If you're not sure, call us before you buy — we set these up every day and won't upsell you a machine you don't need. Buying guidance, not medical advice.
Fixed CPAP vs. Auto-CPAP (APAP) — what's the difference?
One pressure, or auto-adjusting
The most common machines for obstructive sleep apnea. APAP is the popular choice — it adapts all night so you don't have to.
- Built-in humidifier on desktop models
- APAP = AutoSet, Auto, AirSense, Luna G3
- Best value: Certified Pre-Owned
Bilevel is on our BiPAP page
If your doctor prescribed a bilevel (two pressures — higher to inhale, lower to exhale), those live on a separate page.
- VAuto, ST and ASV bilevel modes
- AirCurve 11 VAuto, Luna G3 25A and more
- Shop BiPAP machines →
Note: We don't diagnose or set your pressure — that comes from your prescription. We help you buy the right genuine machine and set it up correctly.
Compare the top CPAP machines
| Model | Brand | Type | Humidifier | Price | Best for |
|---|---|---|---|---|---|
 AirSense 11 AutoSet | ResMed | Auto-CPAP | Built-in | $455 CPO | Newest ResMed · CPO from $455 |
 AirSense 10 AutoSet | ResMed | Auto-CPAP | Built-in | $598 | Most-prescribed |
 Luna G3 Auto | React Health ✓auth | Auto-CPAP | Built-in | $754 | Best authorized value |
 AirSense 10 | ResMed | Fixed CPAP | Built-in | $359 CPO | Simplest · lowest CPO |
 DreamStation 2 Auto | Philips | Auto-CPAP | Built-in | $315 CPO | Lowest entry price |
Full specs — pressure range, ramp, weight and humidifier capacity — are on each product page. We never publish an invented spec.
New, Open Box & Certified Pre-Owned — what's the difference?
New
Factory-sealed, full manufacturer warranty, FDA-cleared. Best if you want the latest platform and longest coverage.
Open Box
A returned or display unit, inspected and fully tested, at a lower price. Condition and hours are listed per unit. Warranty by American Oxygen.
Certified Pre-Owned
Professionally cleaned, tested and verified low-hour machines with a new filter — the best value for the same therapy. Warranty by American Oxygen.
Every Certified Pre-Owned machine is tested in-house before it ships. Condition and testing are described on each product page.
Buy from people who set up these machines every day
Authorized & genuine
Authorized React Health dealer; genuine ResMed & Philips — no clones or grey-market boxes.
Warranty & setup help
Manufacturer warranty on new; warranty by American Oxygen on CPO & Open Box. We help with pressure & mask fit.
Real Doral showroom
See and set up machines in person in Miami-Dade, or ship free anywhere in the U.S.
Bilingual, no pressure
English & Spanish support that matches a machine to your prescription — not the priciest unit.
CPAP machines — frequently asked questions
Do I need a prescription to buy a CPAP or BiPAP?
Yes — CPAP, APAP, and BiPAP machines require a valid prescription in the U.S. Masks, tubing, filters, and chargers don't. We can help you order once you have your Rx.
Can I buy a CPAP without insurance?
Yes. We're a cash-pay retailer — you can buy any machine outright, no insurance needed, and pay over time with Affirm at checkout.
Is American Oxygen an authorized ResMed dealer?
We sell genuine ResMed equipment (AirSense, AirCurve, AirMini). We are an authorized dealer of React Health (Luna G3, Transcend Micro). All machines are genuine and FDA-cleared.
What's the difference between CPAP, APAP, and BiPAP?
CPAP delivers one steady pressure; APAP auto-adjusts within a range; BiPAP delivers two pressures (inhale/exhale). Your prescription specifies which you need.
Which CPAP is best for most people?
An Auto-CPAP (APAP) like the AirSense 10 AutoSet or the authorized Luna G3 Auto suits most obstructive sleep apnea prescriptions. Call us if you're unsure.
Is a Certified Pre-Owned CPAP safe to buy?
Yes. Each Certified Pre-Owned machine is professionally cleaned, tested, and verified, with a new filter, and it's backed by warranty by American Oxygen. It's the same therapy for hundreds less.
What's included with the machine?
Machines typically include the humidifier, tubing, power supply, and filter; masks are usually sold separately so you get the right fit. Check each product page — mask and accessory needs vary.
Can I use my CPAP on a plane?
Yes. Our travel CPAPs (AirMini, Transcend Micro, Portable Luna) are approved for in-flight use — airlines allow them onboard as carry-on medical devices. Desktop CPAP and BiPAP machines are for home use.
Do these machines come with a humidifier?
The desktop CPAP and BiPAP models listed here include a built-in humidifier; travel models use a compact system. Confirm on the product page.
What mask should I get?
That depends on how you sleep and breathe — full-face, nasal, or nasal-pillow. See our guide to the best CPAP masks, or call us and we'll help you match a mask to your machine.
How long does shipping take, and is it free?
Free U.S. shipping on orders over $99; most machines ship within 1–2 business days. Local pickup is available at our Doral, FL showroom.
What if I need help setting it up?
Our Doral team helps with setup, pressure settings from your prescription, mask fit, and humidification — by phone, chat, WhatsApp, or in person, in English or Spanish.
Not sure which one is right for you?
Tell us your prescription and how you sleep — we'll point you to the right genuine machine and mask, no upsell. English & Spanish, from our Doral team.
📞 (786) 755-8063Browse all machinesAmerican Oxygen · 8260 NW 27th St, Suite #407, Doral, FL 33122 · Genuine equipment, cash-pay. CPAP, APAP and BiPAP machines require a valid prescription. Affirm financing subject to eligibility; see your options and terms at checkout.