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Trimix Diver in Mexico: 3 dive centres on TecDiveTools, with agencies, courses taught and a summary of what students say. 2 publish course prices.
TecDiveTools lists 3 dive centres teaching Trimix Diver in Mexico. 2 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). 1 of these 3 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, 1 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
Advanced technical open-circuit diving using trimix gas mixtures to depths up to 333 fsw (100 msw) with extended decompression procedures. Teaches advanced gas blending, multiple-gas switches, complex decompression management, and self-reliance at extreme depths. Enables exploration of the world's deepest wrecks and cave systems.
The centres listed above teach IANTD Trimix Diver 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.
3 dive centres on TecDiveTools teach IANTD Trimix Diver in Mexico: Tulum (2) and Puerto Aventuras (1). Each is listed above.
Deep open-circuit training is done off the Riviera Maya and Cozumel, and in deep cenotes such as The Pit, where depth, a halocline and hydrogen-sulphide cloud combine in one dive.
One centre in the TecDiveTools directory publishes a whole-course price for IANTD Trimix Diver in Mexico: Cave Ha Diving, at $756. 1 centre charges 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 4 and 5 days, based on the durations 2 centres publish 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 TDI Advanced Trimix (7). They are comparable rather than interchangeable — each agency sets its own standards and card, so check which one your next course accepts.