Oxygen Refill Systems for 2023



Updated: February 20, 2023



Oxygen Tank Refill Systems For Sale



What is an oxygen refill system?

Oxygen Cylinder Refill Stations are also known as oxygen transfill systems or homefill oxygen devices. Oxygen refill stations are portable oxygen cylinder refill devices used at home to fill empty oxygen tanks. Oxygen refill machines utilize concentrated oxygen extracted from room air using oxygen concentrator technology. ReFill systems pressurize the concentrated oxygen to fill empty oxygen tanks. This allows you to safely refill oxygen cylinders within your own home, providing you with unlimited, refillable oxygen. Oxygen therapy patients can obtain more freedom to come and go as they please and no longer need to depend upon a local oxygen vendor to refill their empty oxygen tanks.

DeVilbiss iFill Personal Oxygen Refill Station

Why use an oxygen refill system?

The ability to fill oxygen cylinders at home provides greater independence and freedom for oxygen patients. Home oxygen eliminates time-consuming and costly service calls often associated with oxygen tank pickup and deliveries. By filling your own oxygen tanks, you control your own schedule and are not dependent upon a third party. Come and go as you please, knowing that another filled oxygen cylinder is always ready for use.

When can you use an oxygen refill system?

Empty oxygen cylinders may be refilled while you sleep, while you are away shopping, or anytime that you have an empty cylinder that requires refilling. You can refill an empty oxygen tank anytime day or night. Just place the cylinder in the refill machine and turn it on. When the cylinder is refilled you can start using it or place it in reserve for when you are ready. With your own oxygen refilling station, you no longer have numerous empty oxygen tanks lying around waiting for the local oxygen vendor to come by to pick them up. An oxygen refill system gives you more freedom and choices and allows you to work your own schedule independent of third parties

Where can you use an oxygen transfill system?

Oxygen refill stations can be used at home, in the office, in an RV, or even in a boat. Where ever you have access to a 110-120 volt AC electrical system, you may refill oxygen tanks. Just plug it in and turn it on!

Who makes oxygen transfill stations?

Currently three manufacturers produce home oxygen refill systems. These manufacturers have produced these refill devices for a number of years and have considerable experience with oxygen systems.

List of Oxygen Transfill Manufacturers

  • Invacare
  • DeVilbiss
  • Respironics
  • Drive Medical

transfill logos



Ranking the Top Best Home Fill Oxygen Systems

  1. Invacare HomeFill
  2. DeVilbiss iFill
  3. Drive PureFill



Rank Order of Top Transfill Systems


#1  Invacare HomeFill



Invacare HomeFill Compressor

Invacare HomeFill Compressor was the first oxygen transfill device for home use and remains as the best selling. The HomeFill has been around for nearly a decade and is the most well know home device and most popular oxygen refill compressor. The HomeFill is a multi-stage pump that compresses oxygen from an oxygen concentrator to refill empty oxygen cylinders. Invacare also manufactures oxygen concentrators and other respiratory devices.

HomeFill Product Highlights

  • Unlimited Refillable Ambulatory Oxygen Resupply
  • Cylinder Compatibility: M2, ML6, M9, D
  • Concentrator Compatibility: Platinum 5, XL, Perfecto2, Platinum 10
  • Double Insulation
  • Easy Operation
  • Warranty: 3 Years/5,000 Hours




#2  DeVilbiss iFill



Invacare HomeFill Compressor

DeVilbiss developed the iFill Personal Oxygen Refill Station as a simple to use home O2 refill device. The iFill offers the added advantage of having a built-in oxygen concentrator rather than depending upon a separate oxygen concentrator to supply the tank compressor with oxygen. Additionally, the iFill is equipped with a large cylinder release ring designed for individuals with limited dexterity. Combined with a low price, the iFill offers a great solution for home oxygen therapy patients who want to refill their oxygen cylinders at home.

iFill Product Highlights

  • Meets DOT-3AL Safety Standards
  • Cylinder Compatibility: M4, M6, ML6, C, D, and E
  • Concentrator Compatibility: Most Concentrators
  • Simple 3-Step Operation
  • Easy Handling
  • Control Panel Signals When Cylinder Is Full
  • Warranty: 3 Years/3,000 Hours




#3  Drive Medical PureFill



Drive Medical PureFill

The Purefill is no longer in production by the manufacturer--Drive Medical. If you are able to secure a refurbished or a used device, it can operate with any oxygen concentrator that has a transfill port and produces an oxygen concentration greater than 90%, making it compatible with the Pure Oxygen Concentrator, Respironics EverFlo, the Invacare Perfecto 2 or the Platinum 10. This transfill device operates at 55 decibles of noise and comes with a 3 year warranty. Weighing 35 pounds, the PureFill can fill an empty M6 oxygen clinder in 80 minutes.

PureFill Product Highlights

  • No Longer Available From the Manufacturer - Drive Medical
  • Cylinder Compatibility: ML6, M6, C, and D
  • Concentrator Compatibility: Concentrators with a Transfill Port
  • Easy-to-use, Service, and Maintain
  • Simple User Interface
  • Easy-to-operate Flow Selector
  • Warranty: 3 Years/3,000 Hours




How do the three home oxygen refill stations compare?

All three transfill systems are somewhat similar. They all come with a 3 year warranty and three can operate to at least 6,000 feet above sea level or higher. (No data from Drive Medical is available for the maximum operating altitude for the PureFill.) All can provide oxygen concentration of 90% or higher. All three can refill an M6 size oxygen cylinder in 80 minutes or less. Two of the three refill machines require proprietary cylinders to refill. The PureFill, according to Drive Medical, may be used to refill any M4, M6, M9 and D cylinders. Although similar in many ways, there are differences.



O2 Refill Station Size Comparison

The DeVilBiss iFill is the largest machine, but it also has a built-in oxygen concentrator. If you add in the size of an oxygen concentrator to the other two refill stations, the iFill will be the smallest size. The Invacare HomeFill is the most lightweight at 33 pounds.


Size Comparison Invacare
Drive Medical
Width (inches) 20.25 12.25 23
Length (inches) 15 28.5 22
Height (inches) 16 22.5 8
Total Cubic Inches 4,860 7,855 4,048
Weight (pounds) 33 66 35



Refill Oxygen Machines Performance Comparison

The iFill provides oxygen concentration levels between 90 to 96%. Invacare only provides the specification that the HomeFill offers an oxygen concentration level of 90% and above. The iFill provides the highest operating altitude 6,562 feet above sea level.


Performance Comparison Invacare
Drive Medical
Oxygen Concentration 90% or higher 90 to 96% 90% or higher
Operating Altitude 6,000 6,562 N/A



O2 Transfill Operating Factors Comparison

In this comparative category, the Respironics Ultrafill makes a clean sweep. It emits the lowest noise level of 44 decibels, consumes the least amount of power at 110 watts while producing the highest maximum pressure of 3,000 PSI.


Operating Factors Comparison Invacare
Drive Medical
Noise NA 50 55
Power Consumption 200 400 110
Refill Time (Minutes to Fill M6 Cylinder) 75 75 80
Maximum Pressure (PSI) 2,000 ± 100 2,250 2,000



Refill Systems Compatibility Comparison

All three manufacturers recommend using only their own proprietary oxygen cylinders with their oxygen refill systems. Invacare also recommends only using their own 5 liter and above oxygen concentrators with their refill systems. The DeVilbiss iFill does not need an additional oxygen concentrator.



Transfill Dependability Comparison

The DeVilbiss iFill comes with a 3 year warranty but is limited to 3,000 hours of operation. The Invacare HomeFill comes with the shortest warranty of 1 year on the compressor and 3 years or 5,000 hours on parts and labor on internal wear components and control panel components.



O2 Transfill Special Features Difference

The iFill and HomeFill can only refill 2,000 PSI cylinders. The iFill has its own internal oxygen concentrator while the HomeFill and the UltraFill require a separate purchase of a home oxygen concentrator of 5 liters or more to supplement their oxygen refill device. The iFill comes with a user-friendly, large cylinder release ring designed for individuals with limited dexterity. The release ring requires very little pressure to depress, making it easy to install and remove oxygen cylinders.



Ranking the Top Home Oxygen Refill Machines

Invacare HomeFill Oxygen Compressor System


Invacare HomeFill

#1 Most Lightweight


DeVilbiss iFill

#1 Stand alone unit, requires no oxygen concentrator
#1 Tied for highest oxygen concentration levels


Drive Medical PureFill

#1 Smallest Size
#1 Tied for lowest power consumption
#2 Low weight
Compatible with any M4, M6, M9, or D cylinder



Below is a chart that shows the specifications for each transfill station and provides a side-by-side comparison. Highlighted cells depict category leaders.

Oxygen Transfill Comparison Chart

Transfill Oxygen Refill Comparison