Photo by Teemu Virtanen · CC BY-SA 3.0
Advanced Nitrox
Technical diving course teaching advanced nitrox diving from EAN-21 to 100% oxygen at depths to 40m/130ft. Teaches gas planning, oxygen exposure management, gas switching procedures, and multi-gas dive planning for technical diving without staged decompression. Gateway to deeper TDI technical courses.
Centres that teach this course
30 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.
- $950total
- $750total
- $990total
- $750total
- $600total
- $900total
Charged by the day or dive rather than as a course price:
- Cave AdventurersUnited StatesAdvanced NitroxPrivate class$450/day→ $900 for the 2-day minimumGroup class$350/day→ $700 for the 2-day minimum each$450per day
- $300per day
- $325per day
- Under The JungleMexicoAdvanced Nitroxprivate$345/day→ $1,035 for the 3-day minimumper diver in a group$295/day→ $885 for the 3-day minimum each$345per day
- €520total
- €500total
- €415total
- €450total
- €450total
- €425total
- €400total
- €680total
- €450total
Charged by the day or dive rather than as a course price:
- €300per day
- THB 8,900total
- THB 8,900total
- THB 8,900total
- THB 24,000total
- THB 24,900total
- IDR 7,500,000total
- IDR 9,000,000total
- IDR 7,500,000total
Charged by the day or dive rather than as a course price:
- Air Dive AlorIndonesiaAdvanced Nitrox1 student, privateIDR 3,200,000/day→ IDR 6,400,000 for the 2-day minimum3 studentsIDR 2,400,000/day→ IDR 4,800,000 for the 2-day minimum eachIDR 3,200,000per day
- ₱28,450total
Same training under a different agency
17 centres
A separate set of centres, teaching Advanced Nitrox 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.
- €500total
- €450total
- €495total
- €580total
- €580total
- €450total
- €520total
- €460total
Charged by the day or dive rather than as a course price:
- €300per day
- $800total
Charged by the day or dive rather than as a course price:
- Protec MexicoMexicoAdvanced NitroxPSAI1 student$440/day→ $2,200 for the 5-day minimum2+ students$390/day→ $1,950 for the 5-day minimum each$440per day
- $900per person
- IDR 9,500,000total
- IDR 8,400,000total
- IDR 15,000,000total
- THB 24,000total
- THB 25,000total
- ₱32,950total
- MX$12,000total
Same tier, agency not stated
5 centres
These centres publish a price for Advanced Nitrox, 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.
- THB 29,000total
- THB 30,000total
- IDR 7,250,000total
- $600total
- €370total
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
TDI Nitrox Diver; Minimum 25 logged dives; Minimum age 18 (15 with parental consent)
Standards
What a diver must demonstrate to pass this course — not always published by the certifying agency.
Land drills: oxygen analyzer use, dive planning with CNS/MOD calculations, nitrox computer setup. Pre-dive: START procedure (S-drill, Team checks, Air matching, Route, Tables). In-water: buoyancy control, air sharing, free-flow management, safety stops. Minimum 4 dives with 100 minutes accumulated bottom time, max depth 40m/130ft.
Instructors Teaching This Course
Egypt
United States
Philippines
Mexico
Thailand
Indonesia
Malta
Dive Centres Offering This Course
Mexico
United States
Egypt
Philippines
Thailand
Indonesia
Malta
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 TDI Advanced Nitrox
How much does TDI Advanced Nitrox cost?
Published prices for TDI Advanced Nitrox range across 24 centres in the TecDiveTools directory — roughly US$260 to US$1,000 at current exchange rates. In each centre's own currency: €400–€680 (9 centres), $600–$990 (6 centres), THB 8,900–24,900 (5 centres), IDR 7,500,000–9,000,000 (3 centres) and ₱28,450 (1 centre). 6 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 TDI Advanced Nitrox take?
Between 2 and 4 days, based on the durations 17 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 TDI Advanced Nitrox?
TDI's standards require: TDI Nitrox Diver; Minimum 25 logged dives; Minimum age 18 (15 with parental consent).
What is the minimum age for TDI Advanced Nitrox?
TDI's standards state: Minimum age 18 (15 with parental consent).
How many dives do I need before starting TDI Advanced Nitrox?
TDI's standards state: Minimum 25 logged dives.
How deep can you dive with TDI Advanced Nitrox?
TDI's standards for TDI Advanced Nitrox set a maximum depth of 40 m.
What does TDI Advanced Nitrox training involve?
According to TDI's published standards: Land drills: oxygen analyzer use, dive planning with CNS/MOD calculations, nitrox computer setup. Pre-dive: START procedure (S-drill, Team checks, Air matching, Route, Tables). In-water: buoyancy control, air sharing, free-flow management, safety stops. Minimum 4 dives with 100 minutes accumulated bottom time, max depth 40m/130ft.
What is the equivalent of TDI Advanced Nitrox in other agencies?
At the same tier in TecDiveTools' cross-agency comparison: PSAI Advanced Nitrox, RAID Decompression, SSI XR Extended Range Nitrox Diving and PADI TecRec Tec 40. 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.
What course comes after TDI Advanced Nitrox?
The next step in TDI's progression is TDI Decompression Procedures.
Where can I take TDI Advanced Nitrox?
215 dive centres and 438 instructors in the TecDiveTools directory teach TDI Advanced Nitrox across 7 countries, most in the United States, Mexico, Egypt and the Philippines. Each is listed further up this page.
Does the price of TDI Advanced Nitrox include gas and equipment?
Not always — it varies by centre. 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.