Price (USD)
PAX 2 edgeHydrology9
$199
PAX 2
$150
PAX 2 is typically around $49 lower.
Vaporizer Comparison
Hydrology9 vs PAX 2
Side-by-side specs, pricing context, and clear decision guidance.
Hydrology9
Cloudious9 $199
VS
PAX 2
PAX Labs $150
Editorial Summary
Hydrology9 and PAX 2 are both conduction / electronic vaporizers, but they target different priorities. PAX 2 is usually the lower-cost pick at $150, around $49 below Hydrology9. Heat-up speed is broadly similar between the two.
Specs Compared
20
Different Specs
16
Shared Specs
4
Overall Overlap
20%
Shared Traits
Conduction Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
Close callHydrology9
~1 minute
PAX 2
<60 seconds
Both devices are in a similar heat-up range.
Heating Style
Close callHydrology9
Conduction
PAX 2
Conduction
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
Hydrology9
$199
PAX 2
$150
Heat Up Time
Hydrology9
~1 minute
PAX 2
<60 seconds
Temperature Range
Hydrology9
250°F-430°F
PAX 2
182°C - 215°C (260°F - 420°F)
Chamber Capacity
Hydrology9
~0.5 grams
PAX 2
0.15 - 0.35 grams
Battery Capacity
Hydrology9
2000mAh
PAX 2
3000mAh
Dimensions
Hydrology9
~4.5 x ~17.5cm
PAX 2
98mm x 31mm x 22mm
Power Adjustment
Hydrology9
Modular - 5 stage
PAX 2
4 Preset Modes
Chamber Material
Hydrology9
Ceramic
PAX 2
Stainless Steel
Brand
Hydrology9
Cloudious9
PAX 2
PAX Labs
Release Date
Hydrology9
2017
PAX 2
2015
Choose Hydrology9 if...
- Your usage leans toward desktop sessions.
- You prefer Hydrology9's overall feature mix and form factor.
- You value how the Hydrology9 balances size, controls, and everyday practicality.
Choose PAX 2 if...
- You want the lower listed entry price ($150 vs $199).
- Your usage leans toward portable and discrete sessions.
- You prefer PAX 2's overall feature mix and form factor.
Spec Comparison Table
Direct comparison of every spec from each device profile.
16 differ 4 shared
| Specification | Hydrology9 | PAX 2 |
|---|---|---|
| Price (USD) | $199 | $150 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~1 minute | <60 seconds |
| Temperature Range | 250°F-430°F | 182°C - 215°C (260°F - 420°F) |
| Chamber Capacity | ~0.5 grams | 0.15 - 0.35 grams |
| Battery Type | Internal | Internal |
| Battery Capacity | 2000mAh | 3000mAh |
| Charging | Micro USB | — |
| Charge Time | ~2 hours | — |
| Bluetooth / App | — | Yes |
| Dimensions | ~4.5 x ~17.5cm | 98mm x 31mm x 22mm |
| Weight | — | ~90 grams |
| Power Adjustment | Modular - 5 stage | 4 Preset Modes |
| Chamber Material | Ceramic | Stainless Steel |
| Brand | Cloudious9 | PAX Labs |
| Release Date | 2017 | 2015 |
| Session Style | Session | — |
| Warranty | 2 years | 2 years |
| Water Filtration | Yes | — |
Comparison FAQs
What is the biggest difference between the Hydrology9 and the PAX 2?
There's no single headline gap. The differences are spread across 16 smaller spec rows rather than concentrated in one place. The spec table below marks each row that differs.
Which is cheaper, the Hydrology9 or the PAX 2?
PAX 2 is the cheaper option at $150 compared with $199 for the Hydrology9, about $49 less. Live retailer pricing can shift, so confirm before buying.
Does the Hydrology9 or the PAX 2 hold more flower?
Hydrology9 has the larger chamber at ~0.5 grams, versus 0.15 - 0.35 grams on the PAX 2. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Which heats up faster, the Hydrology9 or the PAX 2?
Heat-up times are very close: ~1 minute on the Hydrology9 and <60 seconds on the PAX 2. The real-world difference will be hard to notice mid-session.
Which is more discreet, the Hydrology9 or the PAX 2?
PAX 2 is the better pick if low-profile use matters. It's tagged as stealth or pocket-friendly in our database, while the Hydrology9 is more conspicuous in hand and harder to keep out of sight.
How similar are the Hydrology9 and the PAX 2?
Across the 20 specs we line up, they share 4 and differ on 16, an overlap of about 20%. The differences are concentrated in the areas the spec table highlights with a marker.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.