Are you thinking about becoming a rebreather diver? If so, it’s likely that you have lots of questions. Here, we take a few minutes to address the most frequently asked questions about rebreathers. Keep in mind that different rebreather models have a variety of features, and ensure that you carefully consider the pros and cons of rebreather diving as you decide whether to invest in training.
What is a rebreather?
Your scuba gear is an open-circuit system: You breathe in the air from your cylinder, some is absorbed by your body, and the rest goes up to the surface in the bubbles that you exhale. A rebreather is a diving system that recycles breathing gas that has been exhaled, scrubbing it and refreshing it so it can be used again.
What are some advantages to diving with a rebreather?
There are a lot of advantages to rebreather diving. Number one on most divers’ lists is gas efficiency and no breathing cold, dry, uncomfortable air. Many rebreather divers are able to enjoy a reduction in decompression time, and there are no noisy bubbles to frighten marine life. Some people assume that there are absolutely no bubbles with rebreathers, but this is isn’t 100 percent true – many models do emit a few bubbles, but they are very quiet.
What are some disadvantages of diving with a rebreather?
There are a few major disadvantages to diving with a rebreather, however these are usually overshadowed by the advantages they provide. For instance, the cost of acquiring and maintaining a rebreather can be prohibitive for some divers. In addition, some divers just don’t want to deal with the amount of discipline required for rebreather diving: One must monitor O2 levels, remain highly vigilant, and ensure that bailout systems are fully functional. There is much more to diving with a rebreather than there is to sticking with scuba gear. Rebreather diving is not for everyone, while just about anyone can enjoy scuba diving.
What about training? Do I need a special certification for rebreather diving?
Training is required for rebreather diving and varies from one rebreather to the next because of varying configurations and operational differences. Training courses are typically extensive and costly, meaning you will need to budget both time and money to take advantage of them. Several different agencies offer rebreather certification.
Am I going to have to buy new dive gear?
You can continue to use the same exposure suits, masks, fins, and other basic equipment, but you’ll need to purchase a rebreather unit to replace your scuba gear.
Now for the big question: How much does a rebreather cost?
Rebreather cost varies widely, and as technology becomes more advanced, options vary. Low-end units cost about $2,000, while the very best cost around $30,000. Ensure that the rebreather you buy is one that meets your needs, gets consistently good reviews from other users, and has the reliability and durability to last you for years to come. Luckily, you can find high-quality rebreathers for sale used. If you decide to go with a used rebreather, be sure that it has been properly maintained and serviced.