TDI KISS Air Diluent
Closed-Circuit Rebreather · Near-Silent Diving · Unit-Specific to the KISS
Go quiet. Stay down longer. A closed-circuit rebreather recycles the gas you exhale, scrubbing out the CO2 and adding back oxygen, so you dive near-silent, with almost no bubbles and far more bottom time. This course trains you on the KISS CCR specifically, a reliable, electronically controlled unit, and certifies you to dive it on air diluent to 100 feet on no-decompression dives. You'll master unit build-up, scrubber packing, gas analysis, and emergency procedures. The certification is unit-specific to the KISS. You'll need your own mask, fins, boots, and snorkel; a KISS unit is required, and rental is available at additional cost (call us to confirm before enrolling).
Veterans can put their GI Bill toward their training, and families can use ESA or ClassWallet funds. See if you qualify.
Availability: Contact us for booking information
TDI KISS Air Diluent CCR Course
This is the doorway to rebreather diving. A closed-circuit rebreather recycles the gas you exhale instead of venting it, scrubbing out the carbon dioxide and adding back the oxygen your body used, so you dive near-silent, with almost no bubbles and dramatically more time in the water. This course trains you on the KISS CCR specifically, a mechanically reliable, electronically controlled unit that's well regarded in the technical community. It certifies you to dive the KISS on air diluent to 100 feet on no-decompression dives.
Why divers move to a rebreather
A CCR changes the experience of diving in ways open circuit can't match:
- Extended bottom time, since the same gas is recycled throughout the dive
- Near-silent operation, with almost no bubbles to disturb marine life
- A constant, optimal oxygen level maintained automatically at any depth
- Real gas efficiency instead of venting every breath into the water
How a closed-circuit rebreather works
Your exhaled gas is captured instead of vented. It passes through a scrubber canister that removes the carbon dioxide, then the unit injects oxygen to replace what your body consumed and recycles the gas back to you. The electronics hold a constant optimal oxygen partial pressure no matter how deep you go, which is what makes the rebreather so efficient, and why understanding it thoroughly matters.
What you'll learn
The academics build the deep understanding that safe rebreather diving requires.
- The history of rebreathers and how open, semi-closed, and closed circuit compare
- The mechanics of the KISS CCR specifically
- CCR gas physiology: oxygen toxicity, hypoxia, hypercapnia, and CO2 breakthrough
- Dive tables, computers, and CCR-specific dive planning
Running the unit
You'll learn to operate and care for the KISS to manufacturer standard.
- Build up and break down the KISS CCR
- Pack the scrubber canister correctly, every time
- Analyze your diluent and oxygen before every dive
- Run a full predive checklist, plus post-dive cleaning and maintenance
Emergencies you'll train for
Rebreather safety is about recognizing and responding fast.
- A failed oxygen sensor
- Loop contamination
- Recognizing CO2 breakthrough symptoms
- Bailing out to open circuit
Your in-water training
All dives run between 30 and 100 feet, within safe oxygen exposure.
- At least two dives deeper than 50 feet
- At least one dive deeper than 90 feet
- Every dive kept within CNS limits, recommended max 80%
- Set point switching, monitoring, bailout, SMB, and more
Important to know before you enroll
- This certification is unit-specific to the KISS CCR. Diving a different rebreather model requires separate training on that unit.
- The course must be completed within 6 weeks of the start date.
- Stay current. If you're inactive on the KISS CCR for more than 6 months after the course, a refresher is required before diving it again.
Who can enroll
You'll need a nitrox foundation and some logged experience.
- A TDI Nitrox Diver certification, or equivalent from a TDI-recognized agency
- Proof of 20 logged open water dives
- Minimum age 18
About the KISS unit
You'll train on a unit built to be trusted.
- KISS is a Canadian CCR manufacturer
- Known for mechanically reliable, relatively simple units
- Electronically controlled and well regarded in the tech community
- Your certification is specific to the KISS CCR
✓ What's included
- Instruction and your open water CCR training dives
- The TDI Air Diluent CCR knowledge materials and planning tools
- Full unit operation, maintenance, and emergency training on the KISS
- Your unit-specific TDI Air Diluent CCR certification on completion
What to bring
- Your own mask, fins, boots, and snorkel (required, we don't rent these)
- A KISS CCR unit. Rental is available at additional cost, call us to confirm availability before enrolling, or bring your own
- Your TDI Nitrox certification card and proof of 20 logged dives
- A swimsuit and a towel
Frequently Asked Questions
What is a closed-circuit rebreather?
What is a closed-circuit rebreather?
What is a scrubber?
What is a scrubber?
What are the prerequisites?
What are the prerequisites?
Do I need my own rebreather?
Do I need my own rebreather?
Why is the certification unit-specific?
Why is the certification unit-specific?
How deep does this certify me to dive?
How deep does this certify me to dive?
Let's. Go. Diving.
Ready to go quiet and stay down longer? Call the shop, we'll confirm unit availability and map out your KISS CCR training.
📞 Call the shop (480) 881-4013A unit-specific TDI Air Diluent CCR certification on the KISS rebreather, for no-decompression dives to 100 feet. Must be completed within 6 weeks of the start date. Prerequisites: TDI Nitrox Diver (or equivalent) and 20 logged dives. Unit rental available at additional cost.
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