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Mixed Gas CCR in Mexico: 7 dive centres on TecDiveTools, with agencies, courses taught and a summary of what students say. 4 publish course prices.
TecDiveTools lists 7 dive centres teaching Mixed Gas CCR in Mexico. 4 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). 6 of these 7 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, 6 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.
Looking for individual instructors instead? Instructors in Mexico.
About the course
TIER CORRECTION: Diver-tier advanced closed-circuit rebreather certification using mixed gas (hypoxic and normoxic blends) for deep decompression diving. Builds on Air Diluent or Helitrox CCR decompression prerequisites, extending CCR capabilities into deeper mixed-gas diving. Unit-specific training on approved rebreather models, teaching mixed-gas pre-dive checks, decompression planning specific to mixed-gas CCR, and emergency bailout procedures.
Divers must perform unit-specific mixed-gas CCR drills, demonstrate pre-dive checks for mixed-gas configurations, execute advanced decompression planning with hypoxic/normoxic mixes, manage emergency bailout procedures, and show competent buoyancy/trim on the specific rebreather unit during deep decompression dives.
The centres listed above teach TDI Mixed Gas CCR in Mexico. Requirements are set by the agency, not the centre, so they are the same wherever you train — what differs is price, class size and how much diving is included.
7 dive centres on TecDiveTools teach TDI Mixed Gas CCR in Mexico: Tulum (4), Akumal (1), Mexico City (1) and Puerto Aventuras (1). Each is listed above.
Long cave penetrations are where rebreathers pay off, and the Yucatán has one of the largest rebreather cave-diving communities anywhere, which makes unit-specific training and support easier to find than in most places.
Every centre in the TecDiveTools directory that publishes a price for TDI Mixed Gas CCR in Mexico charges by the day rather than for the whole course. Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.
Between 5 and 7 days, based on the durations 1 centre publishes for it in Mexico. 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 in Mexico also teach IANTD CCR Normoxic Trimix Diver (4). They are comparable rather than interchangeable — each agency sets its own standards and card, so check which one your next course accepts.