Certain medical conditions like COPD, asthma, or emphysema may make using an oxygen concentrator necessary, but paying for the oxygen therapy you need can be a challenge. Leading home oxygen concentrators cost $1,000 or more and can be costly to operate, with most requiring hundreds of watts of power that can increase your electric bill. That’s not the case with the HACENOR HOC-02 continuous-flow home oxygen concentrator. Starting at just $199, it is one of the most affordable home oxygen concentrators on the market.
The HACENOR HOC-02 features a compact design and weighs less than 13 pounds, making it more portable than other home oxygen concentrators that can be bulky and must be wheeled or carted around. The HOC-02 has a handle on the top so you can easily lift and carry it from place to place. It also uses only 150 watts of power, which is the same as it takes to operate a 50-inch LCD TV. The HOC-02’s extremely affordable price, combined with its low power usage, makes it the perfect choice for oxygen users on a budget.
HACENOR HOC-02 home oxygen concentrator: Pros and cons at a glance
| Pros | Cons |
| Listed at just $279.00 on the HACENOR website and can be even less expensive from other suppliers. | No wheels or cart. |
| Delivers an oxygen flow of up to 9 liters per minute. | Comes with only a one-year warranty. |
| Weighs less than 13 pounds, making it one of the lightest stationary oxygen concentrators on the market. | Customer service isn’t as robust as that of other brands. |
| Uses only 150 watts to operate, which is equal to a 50-inch LCD TV. | Oxygen purity decreases with higher settings, with oxygen purity decreasing to an average of 30% at 9 liters per minute. |
| Very quiet at less than 45 dBA. | |
| Comes with a remote control. | |
| Has an anion function that can help purify the air you breathe. | |
| Includes an atomization port for those who need to use a nebulizer. | |
| You do not need a prescription to place an order. |
Key features and specifications
Dimensions: 8.27″ × 8.27″ × 11.02″
Weight: 12.57 pounds
Power draw: 150 watts
Oxygen delivery mode: Continuous flow
Oxygen flow rate/output range: Up to 9 liters of oxygen per minute
Sound level: 45 dBA or less
Cost: Pricing starts at $199.00
Additional features of the HACENOR HOC-02 home oxygen concentrator
The HOC-02 home oxygen concentrator features a smooth black screen that displays oxygen purity level, flow rate, and operation time. Touch-sensitive buttons include an on/off button, a flow rate button, and a timing button. The machine also includes an anion function that electrically charges air molecules, causing dust, allergens, and bacteria to separate, potentially making the air you breathe cleaner. This home oxygen concentrator also has a nebulization nozzle for people who need to use nebulized medications.
The HACENOR HOC-02 oxygen concentrator comes with the following accessories:
- Oxygen mask.
- Nasal cannula.
- Atomization cup for nebulization.
- Power cord.
Accessories also include a headset cannula that helps secure your nasal cannula while you sleep. You also receive a remote control so you can operate the machine even when it’s out of reach.
Although there’s a lot to like about the HACENOR HOC-02 machine, its low price point means it lacks some features that you’ll find with pricier devices. The manual provides minimal information, and the few directions it includes can be difficult to follow. There are no instructions on how to clean or maintain the device. Also, it’s worth noting that while many oxygen concentrators have alarms to notify you if something isn’t working properly, the HOC-02 has no alarms.
The HACENOR website does not provide additional information or resources, and although the company does have a YouTube channel, none of its videos feature the HOC-02 device. That being said, the HOC-02 home oxygen concentrator is designed to be intuitive to use. One reviewer explicitly states that although he didn’t receive an instruction manual, it was easy to figure out.
Sound level
The HACENOR HOC-02 is very quiet, producing less than 45 dBA, which is about the noise level of a ceiling fan or an air purifier. While it is running, you can easily carry on a conversation, watch TV, or sleep undisturbed.
Oxygen delivery modes
The HACENOR HOC-02 delivers a continuous flow of oxygen while the device is in operation. It can deliver up to 9 liters of oxygen per minute. However, the oxygen purity level varies depending on the setting. When set to deliver 1 liter of oxygen per minute, the device has a maximum oxygen purity level of 96%, but that amount decreases as follows:
| Average oxygen purity | Flow rate (per minute) |
| 93% | 1L |
| 82% | 2L |
| 75% | 3L |
| 65% | 4L |
| 55% | 5L |
| 45% | 6L |
| 40% | 7L |
| 35% | 8L |
| 30% | 9L |
The oxygen purity level is higher than that of the air we breathe (which is approximately 21%), but it may not be a good choice for those who require a higher delivery of oxygen at a higher purity level.
The oxygen purity level and flow rate are clearly displayed on the screen. If you want to adjust the flow rate, push the flow button, and it will increase in 1-liter increments.
HACENOR HOC-02 home oxygen concentrator cost
One of the biggest benefits of the HACENOR home oxygen concentrator is that it is so affordable. However, you can save even more if you buy a used machine. Here’s how to buy both new and used.
Buy it new
You can purchase the HACENOR HOC-02 home oxygen concentrator directly from their website. It’s listed at $389.00 but is currently priced at $279.00. Two other online outlets sell this particular HACENOR machine, including Pure Oxygen, which currently has the cheapest listing at $199.00. Charming Key also sells it for $309.00.
The only HOC-02-specific accessory is the air filter. HACENOR recommends replacing their filter every three months. You can purchase additional air filters here.
Buy a used machine
You can get the HOC-02 home oxygen concentrator for an even better deal if you can find a used machine. HACENOR sells used units for just $99.00 when they are available. If you are buying a used device, we recommend purchasing directly from HACENOR because it comes with a six-month warranty. Note that used machines aren’t always available.
Power consumption
The HACENOR HOC-02 home oxygen concentrator uses very little power. It uses only 150 watts, which is about the same as a 50-inch LCD TV.
It’s important to remember that this specific O2 oxygen concentrator consumes minimal power due to its adjusted oxygen concentration levels based on the flow rate. The higher the flow rate, the lower the oxygen purity level. This system enables the machine to operate using very little power even as the flow rate increases.
Having such a low power draw can be a benefit to those who are on a budget. The HOC-02 oxygen concentrator is rated to operate continuously, 24 hours a day, without the higher power consumption and larger utility bills associated with some other machines.
Design
The HACENOR HOC-02 home oxygen concentrator has a sleek modern design. Its large handle and light weight make it easy to carry. However, if you struggle with dexterity or have low arm strength, it might be difficult to move as it doesn’t have wheels or a cart. The device comes with a remote, so you can operate it from anywhere in the room without having to move the device.
The remote has clearly labeled buttons that enable you to:
- Turn the machine on and off.
- Change the flow rate.
- Set a timer.
- Activate the anion function.
Setup of the HACENOR HOC-02 home oxygen concentrator
The HACENOR manual includes instructions, but they can be difficult to understand. In addition, there are no diagrams, startup guides, or videos to reference. Still, setting up the HOC-02 is fairly intuitive. It can be helpful to view the diagram on Pure Oxygen’s website, as all parts are clearly labeled.
To operate the machine, you first attach the nasal cannula to the oxygen port. There are two separate power buttons. First, you push the power button on the back of the machine to turn it on. Once it’s on, you can push the on/off button on the top of the device and adjust the flow rate.
The anion function can be turned on or off when you’re using the machine. The machine functions the same way when using a nebulizer. The only difference is that you disconnect the nasal cannula and connect the nebulizer cup to the atomizing outlet. Removing the cap triggers it automatically, eliminating the need to press a button. After using the nebulizer, simply replace the cap and reconnect the nasal cannula to the oxygen outlet.
Operation guide and assistance
HACENOR has a manual for the HOC-02 device, but it’s short and unclear, although does label some parts and includes a diagram that shows how it works. It also includes safety considerations and the device’s technical specifications.
Unfortunately, there are no additional guides or videos that can help you use the machine. It is relatively easy to get a hold of a HACENOR customer service rep if you have questions. They have a chat feature on their website, you can chat with them on WhatsApp, or you can send them an email at support@hacenoroxygen.com. You can also call them at +86-186-6029-6821, but keep in mind that it’s an international number as the company is based in China.
Warranty
HACENOR offers a one-year warranty on their O2 concentrator. You can also add an additional one-year warranty for $150. Should the machine malfunction during that time, technicians will provide support, send spare parts, or facilitate a repair or replacement.
They also offer a 30-day return policy, but it comes with some fine print. The return must be processed within 30 days after receiving the product. There’s a 10% handling fee if you cancel an order after it’s placed. If you used a credit card when you purchased the device, HACENOR will deduct a 5% processing fee from your refund. You’re responsible for return shipping, which could cost $80, as well as an additional $60 service fee.
If your device is damaged or has defects, HACENOR will replace it free of charge as long as you can provide proof of the damage with a picture or video.
Maintenance and care instructions
The manual does not include specific care instructions, but there are some general tips for maintaining an oxygen concentrator. The exterior of the home oxygen concentrator can be wiped with a soft cloth dampened with warm water and a mild detergent.
You do not need to clean the filter. Instead, its small, round cotton filter needs to be replaced every three months. You can purchase additional filters in packs of five or 10 on the HACENOR website.
Troubleshooting common issues with the HACENOR HOC-02 home oxygen concentrator
Troubleshooting issues with the HOC-02 stationary oxygen concentrator can be difficult because there are no quick troubleshooting guides or videos to reference if you’re experiencing a problem. In addition, the machine doesn’t have any alarms, so you may not realize you’re experiencing a problem until it stops working.
A common issue with this particular oxygen concentrator comes from the fact that it has two power buttons. If you push the power button on top of the device and it doesn’t turn on, check the switch at the back of the machine to make sure it’s powered on.
Another common problem with oxygen concentrators is disrupted oxygen flow due to a kinked cannula tube. Use a nasal cannula long enough to comfortably reach between you and the HOC-02. Avoid using tubing that is unnecessarily long, as it’s more likely to kink.
Safety considerations
Oxygen concentrators should not be used around open flames, including near the stove or a candle. You should never use an oxygen concentrator while you’re smoking or near someone who is smoking. It’s also a good idea to avoid greasy materials or dry environments where static can produce a spark.
The manual also explicitly states other operating conditions. It should never be placed horizontally, and it should always be plugged into a safety-qualified electrical outlet and never into an extension cord.
Keep the machine away from walls and furniture to ensure proper ventilation. Keep your machine out of extreme temperatures and direct sunlight, and make sure it stays dry. It should also operate in an environment that has less than 80% humidity.
Customer service
Customer service for the HACENOR HOC-02 is based in China, but their customer support team is very responsive. You can contact them through the website’s live chat feature, WhatsApp, a contact form, or email (support@hacenoroxygen.com). You can also try calling them at +86-186-6029-6821, but remember that this is an international number and may come with charges.
User reviews and testimonials
The HACENOR website lists some reviews of the HOC-02 device, all of which are very positive. Reviewers mention that the HOC-02 oxygen concentrator works well and is easy to operate. The only complaint is that the instructions in the manual are minimal.
You can find additional reviews at Pure Oxygen. They are less detailed, but they are just as positive. One particular user notes that it offers great value, especially if your insurance won’t cover the cost of a machine. Another user with COPD mentions that it helps him sleep through the night.
How to buy the HACENOR HOC-02 home oxygen concentrator
Purchasing the HOC-02 home oxygen concentrator is a little easier compared to other devices because it doesn’t require a prescription. You can purchase the device without the hassle of faxing, emailing, or uploading your prescription.
HACENOR sells the O2 concentrator directly, but there are also a few other places to purchase the machine. All retailers that sell the HOC-02 are based in China. They include:
| Name | Cost (at the time of publishing) | Benefit |
| HACENOR | $279.00 | Buy direct from the manufacturer |
| Pure Oxygen | $199.00 | Lowest price |
| Charming Key | $309.00 | Use discount code to get $10 off |
These prices were accurate at the time of publishing; please verify with the retailer, as prices can fluctuate.
Final thoughts on the HACENOR HOC-02 home oxygen concentrator
The HACENOR HOC-02 costs just a few hundred dollars and draws only 150 watts of power. It weighs less than 13 pounds and has a large handle, making it highly portable for a home oxygen concentrator. Its additional features, like air purifying and atomization functions, can be helpful for some users.
The HACENOR HOC-02 is a great option if you’re on a budget and don’t have high oxygen needs or require extensive support to set up, maintain, and use an oxygen machine. That’s why it’s our top pick for the most affordable home oxygen concentrator to buy and operate.
