Dive Directory
Loading dive centres and instructors…
Trimix Dive Centres in Mexico
Trimix in Mexico: 14 dive centres on TecDiveTools, with agencies, courses taught and a summary of what students say. 7 publish course prices.
14 dive centres
Loading dive centres and instructors…
Trimix in Mexico: 14 dive centres on TecDiveTools, with agencies, courses taught and a summary of what students say. 7 publish course prices.
TecDiveTools lists 14 dive centres teaching Trimix in Mexico. 7 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). 9 of these 14 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, 9 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
Trimix is TDI's foundational mixed-gas course, teaching divers to plan and execute decompression dives using custom oxygen/helium/nitrogen breathing gas mixtures. This course bridges Extended Range and deeper technical diving, introducing divers to trimix theory, helium physiology, staged decompression on multiple gas mixes, and the procedures for managing hypoxic and normoxic blends. Graduates can conduct trimix dives to 60m/200ft with proper decompression support.
Students complete 4 decompression dives using trimix as bottom gas (100+ minutes accumulated bottom time; 2 dives must exceed 40m/130ft depth), demonstrating mastery of: trimix gas physics and physiology, decompression calculations on multiple gas mixes, proper equipment configuration, safe gas switches at depth, emergency ascent procedures, and staged decompression execution.
The centres listed above teach TDI Trimix 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.
14 dive centres on TecDiveTools teach TDI Trimix in Mexico: Playa del Carmen (6), Mexico City (3), Tulum (3), Akumal (1) 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.
Published prices for TDI Trimix in Mexico range across 2 centres in the TecDiveTools directory. That is $1,500–$1,520 (2 centres). 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 4 and 5 days, based on the durations 3 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 IANTD Normoxic Trimix Diver (7) and PSAI Trimix Fundamentals (1). They are comparable rather than interchangeable — each agency sets its own standards and card, so check which one your next course accepts.
