Photo by Teemu Virtanen · CC BY-SA 3.0
Extended Decompression
A bridge to deeper technical diving without helium for sidemount and twinset divers in regions where trimix is unavailable. This course extends technical diving capabilities to 55 metres using compressed air as the primary breathing gas, with up to four stage cylinders containing custom nitrox blends for decompression. Students master complex multi-gas management, extended decompression obligations, nitrogen absorption and off-gassing, and deep air-based diving suitable for locations where trimix is impractical or cost-prohibitive.
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.
- IDR 15,000,000total
Same training under a different agency
29 centres
A separate set of centres, teaching Extended Range 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.
- €800total
- €800total
- €705total
- €850total
- €800total
- €850total
- €715total
- €600total
- €500total
- €520total
- €640total
- €550total
- €575total
Charged by the day or dive rather than as a course price:
- €300per day
- IDR 20,700,000total
- IDR 15,000,000total
- IDR 17,500,000total
- IDR 10,000,000total
- IDR 20,700,000total
- IDR 17,500,000total
- IDR 15,000,000total
- IDR 12,500,000total
- IDR 12,600,000total
- $990total
- $950total
- $1,400total
Charged by the day or dive rather than as a course price:
- Cave AdventurersUnited StatesExtended RangeTDIPrivate class$450/day→ $1,350 for the 3-day minimumGroup class$350/day→ $1,050 for the 3-day minimum each$450per day
- $1,000per person
- $325per day
- Under The JungleMexicoExtended RangeTDIprivate$345/day→ $1,380 for the 4-day minimumper diver in a group$295/day→ $1,180 for the 4-day minimum each$345per day
- THB 30,000total
- THB 25,000total
- THB 39,900total
- THB 44,900total
- THB 35,000total
- THB 30,000total
- ₱54,000total
- ₱32,950total
- MX$12,000total
Same tier, agency not stated
12 centres
These centres publish a price for Extended Range, 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 35,000total
- THB 35,000total
- THB 35,000total
- THB 44,900total
- €690total
- €850total
- €900total
- €650total
Charged by the day or dive rather than as a course price:
- €200per day
- IDR 12,000,000total
- $1,600total
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
No specific prerequisite dive minimums publicly specified on RAID's website. Recommended for divers with prior decompression diving experience. Minimum age 18 years. Sidemount or twinset configuration experience required. Contact a RAID centre for current prerequisites and depth specifications.
Instructors Teaching This Course
Thailand
Philippines
Dive Centres Offering This Course
Indonesia
Philippines
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 RAID Extended Decompression
How much does RAID Extended Decompression cost?
One centre in the TecDiveTools directory publishes a whole-course price for RAID Extended Decompression: Gili Divers, at IDR 15,000,000. Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.
What is the equivalent of RAID Extended Decompression in other agencies?
At the same tier in TecDiveTools' cross-agency comparison: TDI Extended Range, PSAI Extended Range Nitrox, PADI TecRec Tec 50 and IANTD Technical Diver. 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 RAID Extended Decompression?
The next step in RAID's progression is RAID Normoxic Decompression.
Where can I take RAID Extended Decompression?
5 dive centres and 5 instructors in the TecDiveTools directory teach RAID Extended Decompression, in Indonesia, Thailand and the Philippines. Each is listed further up this page.
Does the price of RAID Extended Decompression 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.