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  Homepage > Respiratory Therapy > Portable Oxygen Concentrators >

  HELiOS Marathon Portable Oxygen Unit, H850
HELiOS Marathon Portable Oxygen Unit, H850
Have a Question? Call 877-480-3028

List Price: $3,999.99
Our Price: $1,323.27
You save $2,676.72!
MFG: Sequal
Shipping: Free Shipping
Delivery Estimate:
3 - 4 Business Days*

Availability: In Stock
CHS ID: H850


CAIRE, Inc.’s HELiOS Marathon Portable Oxygen Unit gives oxygen therapy patients unprecedented freedom: It lasts up to 22 hours between refills yet weighs only 5.6 pounds fully filled! The HELiOS Marathon portable unit lets patients be out all day. Whether they want to visit friends and family, shop, fish or golf—patients can have long lasting freedom without needing to refill their portable or bring along extra oxygen cylinders.

While other portable oxygen units have limited continuous flow operation, the HELiOS portable units feature multiple settings for continuous and demand flow modes. Now continuous flow patients can enjoy the “no spill” design and portability the HELiOS system is known for.


  • No batteries or electricity required.
  • Unit can operate flat on its back, upright or in any position in between.
  • Versatile, Dual-mode pneumatic demand device (PDD) delivers:
    • up to 4 LPM demand flow
    • up to 6 LPM continuous flow
  • Does not emit heat or noise
  • Easy maintenance
  • Efficient—Ultra-low normal evaporation rate (NER)
  • Durable, reliable design engineered to prevent leaks
  • Comfortable padded, slip-resistant shoulder strap
  • Can be worn with a shoulder strap or backpack for hands-free convenience.
  • Specifications

  • LOX capacity: 2.0 lb (0,91 kg)
  • Gaseous equivalent capacity: 685 L
  • Weight, filled: 5.6 lb (2,54 kg)
  • Weight, empty: 3.6 lb (1,63 kg)
  • Height including handle: 15.0” (381 mm)
  • Typical use time at 2 LPM demand mode: 22 hours
  • Typical use time at 2 LPM continuous mode: 6.1 hours
  • Operating pressure: 22 psi (152 kPa)
  • Normal evaporation rate: 1.0 lb/day (0,45 kg/day)
  • Standard flow control range:
    • Continuous: off, .12, .25, .5, .75
    • Demand: off, 1, 1.5, 2, 2.5, 3, 3.5, 4
  • Warranty: 1 Year

  • 1 Each / Each
    Part Number(s):

    • H850

    Average Customer Review: 1 of 5 | Total Reviews: 1 Write a review.

      0 of 0 people found the following review helpful:
    Helios H850 November 17, 2015
    Reviewer: Anonymous Person from 92591  
    The Helios H850 I purchased was manufactured by Caire.  The Helios H850, I also use & lease from Apria was manufactured by Puritan Bennett. The Puritan Bennett is a superior product.  It was so different, I thought the unit I purchased was defective. A Caire technician stated that the product had been redesigned.  I feel mislead & am stuck with an inferior product.  The Caire unit takes almost twice as long to fill, 6-7 minutes.  Once filled, the oxygen evaporates much more quickly than with the Puritan Bennett.  I can fill the Puritan Bennett and 24 hours later the unit is still half full.  The Caire unit is almost empty after 24 hours of non-use.  At 3LPM continuous flow, the Puritan Bennett provides a solid 3.5 hours of use.  The Caire unit barely breaks 3 hours.  The unit has dripped liquid oxygen as it has been disengaged from the fill unit. Just be aware that if you have used a Puritan Bennett Helios 850 previously, the Caire Helios 850 does not compare.

    Was this review helpful to you?

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