A technical diver handling decompression stage cylinders during a dive

Photo by Teemu Virtanen · CC BY-SA 3.0

OC TechPSAI

Advanced Nitrox

Last updated September 21, 2026

Centres that teach this course

1 dive centre 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.

Priced per day or per dive in US Dollar — see below.

    Charged by the day or dive rather than as a course price:

    • Protec MexicoMexico
      Advanced Nitrox
      1 student$440/day→ $2,200 for the 5-day minimum
      2+ students$390/day→ $1,950 for the 5-day minimum each
      $440
      per day

    Same training under a different agency

    33 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.

    €400 – €680across 16 centres pricing in Eurofrom ≈ $447

    Charged by the day or dive rather than as a course price:

    $600 – $990across 6 centres pricing in US Dollar

    Charged by the day or dive rather than as a course price:

    • Cave AdventurersUnited States
      Advanced NitroxTDI
      Private class$450/day→ $900 for the 2-day minimum
      Group class$350/day→ $700 for the 2-day minimum each
      $450
      per day
    • Horizon DiversUnited States
      PADI Tec 40 DiverPADI TecRec
      $900
      per person
    • CDT Mexico (Cave Diving Training)Mexico
      Advanced NitroxTDI
      1 student$300/day→ $900 for the 3-day minimum
      $300
      per day
    • Divers UnderGroundMexico
      TDI Advanced NitroxTDI
      $325/day
      $325
      per day
    • Under The JungleMexico
      Advanced NitroxTDI
      private$345/day→ $1,035 for the 3-day minimum
      per diver in a group$295/day→ $885 for the 3-day minimum each
      $345
      per day
    IDR 7,500,000 – IDR 15,000,000across 6 centres pricing in Indonesian Rupiahfrom ≈ $419

    Charged by the day or dive rather than as a course price:

    • Air Dive AlorIndonesia
      Advanced NitroxTDI
      1 student, privateIDR 3,200,000/day→ IDR 6,400,000 for the 2-day minimum
      3 studentsIDR 2,400,000/day→ IDR 4,800,000 for the 2-day minimum each
      IDR 3,200,000
      per day
    THB 8,900 – THB 25,000across 5 centres pricing in Thai Bahtfrom ≈ $265
    ₱28,450 – ₱32,950across 2 centres pricing in Philippine Pesofrom ≈ $452
    • Tech AsiaPhilippines
      TDI Advanced NitroxTDI
      ₱28,450
      total
    • Tech AsiaPhilippines
      PADI Tec 40PADI TecRec
      ₱32,950
      total
    One centre publishes a price in Mexican Peso.

    Same tier, agency not stated

    9 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 24,000 – THB 30,000across 4 centres pricing in Thai Bahtfrom ≈ $714
    $600 – $900across 2 centres pricing in US Dollar
    €370 – €450across 2 centres pricing in Eurofrom ≈ $414
    One centre publishes a price in Indonesian Rupiah.

    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.

    No instructors or dive centres found offering this course.

    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 PSAI Advanced Nitrox

    How much does PSAI Advanced Nitrox cost?

    Every centre in the TecDiveTools directory that publishes a price for PSAI Advanced Nitrox charges by the day rather than for the whole course. 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 PSAI Advanced Nitrox take?

    5 days, based on the durations 1 centre publishes 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 is the equivalent of PSAI Advanced Nitrox in other agencies?

    At the same tier in TecDiveTools' cross-agency comparison: TDI 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.

    TDI Advanced NitroxRAID DecompressionSSI XR Extended Range Nitrox DivingPADI TecRec Tec 40

    What course comes after PSAI Advanced Nitrox?

    Among the PSAI courses listed on TecDiveTools, the next step up is PSAI Extended Range Nitrox.

    PSAI Extended Range Nitrox

    Does the price of PSAI 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.

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