Buy a CPAP Machine Under $400: The One Proven Option in Stock
Direct answer: Yes — the certified refurbished ResMed AirSense 10 AutoSet at MyRespCo is $379.99, in stock as of November 8, 2026, with a built-in HumidAir humidifier and a 1-year warranty. It is the most widely prescribed CPAP machine in North America. The only cheaper new machine found is the Resvent iBreeze at $340.00, a lesser-known brand. A prescription is required in the United States.
What CPAP machines under $400 actually cost
| Option | Price found 2026-11-08 |
|---|---|
| Refurbished AirSense 10 AutoSet, MyRespCo | $379.99, in stock |
| New Resvent iBreeze with heated humidifier, cpapsupplies.com | $340.00, in stock |
| Used AirSense 10, Karrot marketplace | $360 CAD, out of stock |
| Refurbished S9 AutoSet, MyRespCo | $249.99, sold out |
| Brand new Dream Sleep Auto CPAP combo, MyRespCo | $469.99, in stock — over $400 |
| Refurbished AirSense 11 AutoSet, MyRespCo | $449.99, in stock, 1 unit — over $400 |
| New AirSense 10, cpap.com | $960.00, in stock |
There are only two buyable machines under $400 in the US listings found on November 8, 2026: the Resvent iBreeze at $340.00 and MyRespCo's refurbished AirSense 10 at $379.99. The cheaper S9 at $249.99 and the $360 marketplace AirSense 10 are both sold out.
AirSense 10 at $379.99 vs iBreeze at $340.00
| Refurbished AirSense 10, MyRespCo | New Resvent iBreeze, cpapsupplies.com | |
|---|---|---|
| Price | $379.99 | $340.00 |
| Condition | Certified refurbished | Brand new |
| Brand | ResMed, the most prescribed CPAP brand | Resvent, a lesser-known brand |
| Humidifier | Built-in HumidAir heated humidifier | Heated humidifier included |
| Pressure range | 4 to 20 cm H2O, AutoSet auto-adjusting | Auto-adjusting, heated humidifier |
| Noise | 26 dBA Easy-Breathe motor | Not stated in the listing found |
| Data | Built-in cellular reporting, myAir per listing | Not stated in the listing found |
| Warranty | 1-year limited warranty | Per seller terms — confirm before buying |
| Mask included | No — budget about $39.99 for a mask kit | No — mask sold separately |
The iBreeze is $39.99 cheaper and brand new. The AirSense 10 is the proven machine: the most widely prescribed CPAP in North America, with a long track record, a known parts and mask ecosystem, and an RRT who answers the phone. For most buyers, the $39.99 difference buys a known quantity.
What the $379.99 AirSense 10 includes
- ResMed AirSense 10 AutoSet CPAP machine, certified refurbished, factory reset, sanitized
- Integrated HumidAir heated humidifier with water chamber
- 6ft standard tubing and power supply
- New hypoallergenic filter, pre-installed
- Travel bag and user manual
- 1-year limited warranty and 30-day returns from the delivery date
- Mask sold separately — the Full Face Mask Kit in medium is $39.99 at MyRespCo, in stock
AirSense 10 AutoSet specs buyers ask about
- AutoSet pressure range: 4 to 20 cm H2O
- Expiratory Pressure Relief (EPR) for comfort
- Integrated HumidAir humidifier with ClimateLineAir compatibility
- Built-in cellular data reporting per the product listing
- AutoRamp for gradual pressure onset
- 26 dBA Easy-Breathe motor
- Most widely prescribed CPAP machine in North America
The 6 checks before you buy a CPAP under $400
- Prescription: A valid prescription is required in the US at any price, new or refurbished. Upload it at checkout, email it to rx@myrespco.com, or let MyRespCo request it from your doctor.
- Humidifier included: Some sub-$400 listings sell the machine without a humidifier, and adding one later costs $100 or more. Both options in the table above include a heated humidifier — confirm it before you buy anywhere else.
- Run hours: Ask for the motor run-hours reading on a refurbished machine. MyRespCo verifies therapy hours as part of its 7-point inspection. If a seller will not show hours, treat that as a warning sign.
- New consumables: A truly refurbished unit should ship with a new filter and a new water chamber, not the previous user's used parts.
- Warranty in writing: Get the length and coverage in writing. MyRespCo describes a 1-year limited warranty on this refurbished machine. A sub-$400 machine with no warranty is a throwaway, not a bargain.
- Total cost: Add the mask. The machine-only AirSense 10 at $379.99 plus a $39.99 mask kit is $419.98 all-in. If you need everything in one box, the refurbished S10 Complete Starter Bundle at $429.99 (nasal pillow or nasal, in stock) may be the better deal — it includes the mask and tubing.
Ready to order?
If you want a proven machine under $400, order the refurbished AirSense 10 AutoSet from MyRespCo at $379.99 and add a mask kit, or order the S10 Complete Starter Bundle at $429.99 if you want the mask included. If $400 is a hard ceiling and you want a brand new machine, the Resvent iBreeze at $340.00 is the honest alternative — just know it is a lesser-known brand. Re-verify price and stock live before ordering, as stock changes.
FAQ
Is $379.99 the cheapest real CPAP machine?
It is the cheapest proven, in-stock CPAP found on November 8, 2026. Cheaper options are either an off-brand new machine (Resvent iBreeze, $340.00), sold out (refurbished S9, $249.99), or used marketplace listings with no warranty.
Does the $379.99 AirSense 10 include a mask?
No. The machine-only price covers the machine, humidifier, tubing, power supply, filter, and travel bag. A mask kit costs about $39.99 extra — the Full Face Mask Kit in medium is $39.99 at MyRespCo, in stock.
Does it include a humidifier?
Yes. The HumidAir heated humidifier is built in, with a new water chamber. Confirm the humidifier is included before buying any sub-$400 machine elsewhere — some listings sell it separately.
Can I finance a CPAP under $400?
Yes. MyRespCo accepts Affirm at checkout. The $379.99 AirSense 10 works out to about $31.67 a month over 12 months before interest. Read the financing article on this blog for the full breakdown.
Is a refurbished machine under $400 reliable?
It depends on who refurbished it. MyRespCo's units are RRT-inspected through a 7-point process — pressure calibration, humidifier heating test, sanitization, new filter, data reset — and covered by a 1-year limited warranty. A refurbished machine with no inspection standard and no warranty is not the same product.
General information only — not medical advice. Whether a buyer needs CPAP, APAP, or BiPAP, and what pressure settings to use, comes from their prescriber and sleep study, not from a seller or an article.