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Air Diluent CCR Decompression Procedures in worldwide: 83 dive centres on TecDiveTools, with agencies, courses taught and a summary of what students say. 35 publish course prices.
TecDiveTools lists 83 dive centres teaching Air Diluent CCR Decompression Procedures worldwide. 35 of them publish course prices, in the currency the shop advertises and with the date each was checked — not converted, and not estimated.
Listings are ordered by how much evidence exists about their technical diving, not by a star rating, with any paid Featured listing shown first and marked as such (how rankings work). 67 of these 83 carry reviews we have read and classified as being about technical or overhead training. The count excludes recreational certifications by name, so a busy resort does not outrank a one-instructor cave operation on the volume of its reef trips. Separately, 53 have at least one instructor whose reviews we have read and summarised — a dive centre carries no synthesis of its own. How we read and count reviews.
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About the course
Extends closed-circuit rebreather diving into staged decompression on air/nitrox diluent to 40m/130ft maximum depth. Teaches decompression gas planning, bailout procedures with mandatory decompression obligations, and risk management when ascent is no longer immediate. Second rung on TDI's CCR progression ladder.
Minimum 7 dives with 420 minutes accumulated bottom time, maximum 40m/130ft depth. Pre-dive: staged decompression planning with bailout gas calculations. In-water skills: CCR operation in decompression, mandatory stop execution, bailout procedures with decompression obligation, emergency gas switching. Competency on unit-specific decompression procedures.
83 dive centres on TecDiveTools teach TDI Air Diluent CCR Decompression Procedures worldwide: United States (24), Indonesia (12), Egypt (11), Malta (10), Thailand (10) and Mexico (9), and 1 more. Each is listed above.
Published prices for TDI Air Diluent CCR Decompression Procedures worldwide range across 5 centres in the TecDiveTools directory — roughly US$1,250 to US$1,700 at current exchange rates. In each centre's own currency: IDR 23,000,000–24,900,000 (3 centres), THB 56,900 (1 centre) and €1,400 (1 centre). 2 centres charge by the day instead, which is not comparable with a course total. Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.
Between 3 and 7 days, based on the durations 5 centres publish for it worldwide. The time depends on the centre's schedule, weather, and how quickly the required skills are demonstrated — agencies set a minimum number of dives, not a fixed number of days.
At the same tier in TecDiveTools' cross-agency comparison, dive centres worldwide also teach IANTD CCR Advanced EANx Diver (23), RAID 40/45m (130ft/150ft) CCR Course (2) and ANDI CCR Level 3 (1). They are comparable rather than interchangeable — each agency sets its own standards and card, so check which one your next course accepts.
