Loading dive centres and instructors…
Trimix Diver in worldwide: 13 dive centres on TecDiveTools, with agencies, courses taught and a summary of what students say. 7 publish course prices.
TecDiveTools lists 13 dive centres teaching Trimix Diver worldwide. 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 13 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, 8 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.
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.
13 dive centres on TecDiveTools teach IANTD Trimix Diver worldwide: United States (5), Thailand (4), Mexico (3) and Indonesia (1). Each is listed above.
Published prices for IANTD Trimix Diver worldwide range across 2 centres in the TecDiveTools directory — roughly US$750 to US$1,200 at current exchange rates. In each centre's own currency: IDR 20,700,000 (1 centre) and $756 (1 centre). 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 6 days, based on the durations 3 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 TDI Advanced Trimix (73) and PADI TecRec Tec Trimix Diver (3). They are comparable rather than interchangeable — each agency sets its own standards and card, so check which one your next course accepts.
