Photo by Teemu Virtanen · CC BY-SA 3.0
Advanced Recreational Trimix Diver
This open-circuit course teaches recreational divers to manage helium-based gas mixtures at greater depths, reducing nitrogen narcosis while maintaining recreational-level decompression procedures and dive planning. You'll learn multi-mix deployment strategies, hyperbaric narcosis avoidance, and stage cylinder management for air/EANx/trimix transitions. This course unlocks deep recreational technical diving and is a gateway to full technical trimix certification for divers seeking to explore the world's deepest recreational dive sites.
Centres that teach this course
7 dive centres in the directory publish a price for this exact certification, checked Sep 2026. Each centre's own wording is shown beneath its name. Ranges cover whole-course prices only — where a centre charges per day or per dive, its rate is listed separately below, since a daily figure is not comparable with a course total.
Charged by the day or dive rather than as a course price:
- Elite Divers InternationalMexicoAdvanced Recreational Trimix (Helitrox) Diver$275/day→ $1,100 for the 4-day minimum$275per day
- Third Dimension DivingMexicoAdvanced Recreational Trimix Diver (Helitrox)$295/day→ $1,180 for the 4-day minimum$295per day
- €575total
- €700total
- IDR 20,700,000total
- IDR 18,000,000total
- THB 25,000total
Same training under a different agency
13 centres
A separate set of centres, teaching Helitrox / Advanced Recreational Trimix under a different agency. These are not the same certification — the standards and the card differ — but they cover the same depth and scope, which is why centres price them alike. Every row here names whose rating it is, and none of them is counted above.
- €900total
- €850total
- €850total
- €700total
- €800total
- €1,200total
- €1,200total
- €560total
- €575total
- €900total
- €550total
- THB 32,000total
- THB 35,000total
- THB 35,000total
- THB 35,000total
Charged by the day or dive rather than as a course price:
- Cave AdventurersUnited StatesHelitroxTDIPrivate class$450/day→ $1,350 for the 3-day minimumGroup class$350/day→ $1,050 for the 3-day minimum each$450per day
- ₱28,950total
Same tier, agency not stated
1 centre
These centres publish a price for Helitrox / Advanced Recreational Trimix, but their own wording does not say which agency's certification it buys — many teach several and name the card only once you enquire, and some price one course for either agency. The figure is comparable; the certification is not identified, so we do not guess at one.
Charged by the day or dive rather than as a course price:
- $250per day
These prices are not like-for-like. Two centres can charge very differently for the same certification because they include different things. One price may cover twinsets, stages, deco gas and cylinder rental for every training dive, a dedicated classroom for the theory, boat or transport to the site, and the agency's registration and materials; another may be tuition only, with all of that charged separately — or the other way round, with a centre bundling in extras the first leaves out. Class size, whether the course is one-to-one, and how many days are allowed for it move the figure too. Check what each centre's price includes before comparing them, and confirm with the centre before booking.
Consumables are usually extra. Sorb, helium, O₂ and other fills, park and cenote fees, certification fees and rental are commonly charged on top.
Packages combining several certifications, upgrades from an existing one, and open-ended day rates are excluded — none of them is the standalone price of this course, and including them would move the figures away from what a new student can actually book.
Prerequisites
IANTD Deep Diver and EANx Diver (or equivalents), minimum 30 logged dives, minimum 15 years old (with guardian authorization) or 18 years old. Maximum training depth 150 fsw (45 msw).
Instructors Teaching This Course
Mexico
Thailand
United States
Other locations
Dive Centres Offering This Course
Thailand
Mexico
Indonesia
United States
We're still building out the directory country by country, so this list isn't every instructor or dive centre teaching it in the world — more locations are coming soon.
Common questions about IANTD Advanced Recreational Trimix Diver
How much does IANTD Advanced Recreational Trimix Diver cost?
Published prices for IANTD Advanced Recreational Trimix Diver range across 5 centres in the TecDiveTools directory — roughly US$600 to US$1,200 at current exchange rates. In each centre's own currency: €575–€700 (2 centres), IDR 18,000,000–20,700,000 (2 centres) and THB 25,000 (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.
How long does IANTD Advanced Recreational Trimix Diver take?
Between 3 and 6 days, based on the durations 4 centres publish for it. 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.
What are the prerequisites for IANTD Advanced Recreational Trimix Diver?
IANTD's standards require: IANTD Deep Diver and EANx Diver (or equivalents), minimum 30 logged dives, minimum 15 years old (with guardian authorization) or 18 years old. Maximum training depth 150 fsw (45 msw).
What is the minimum age for IANTD Advanced Recreational Trimix Diver?
IANTD's standards state: Minimum 15 years old (with guardian authorization) or 18 years old.
How many dives do I need before starting IANTD Advanced Recreational Trimix Diver?
IANTD's standards state: Minimum 30 logged dives.
What is the equivalent of IANTD Advanced Recreational Trimix Diver in other agencies?
At the same tier in TecDiveTools' cross-agency comparison: SSI XR Extended Range Trimix, TDI Helitrox, PADI TecRec Tec 40 Trimix, PADI TecRec Tec 45 Trimix and PADI TecRec Tec 50 Trimix. They cover comparable training, but each agency sets its own standards, depth limits and certification card, so they are comparable rather than interchangeable — check which one your next course accepts.
Where can I take IANTD Advanced Recreational Trimix Diver?
23 dive centres and 31 instructors in the TecDiveTools directory teach IANTD Advanced Recreational Trimix Diver, in Mexico, Thailand, Indonesia and the United States. Each is listed further up this page.
Does the price of IANTD Advanced Recreational Trimix Diver include gas and equipment?
Not always — it varies by centre. Helium, certification fees, equipment rental and boat or site fees are commonly charged on top of the course price. Each centre's price list on TecDiveTools shows what it notes as included.