Price (USD)
Hydrology9 edgeHydrology9
$199
The Coma
$588
Hydrology9 is typically around $389 lower.
Vaporizer Comparison
Hydrology9 vs The Coma
Side-by-side specs, pricing context, and clear decision guidance.
Hydrology9
Cloudious9 $199
VS
The Coma
Vices $588
Editorial Summary
Hydrology9 and The Coma are both electronic vaporizers, but they target different priorities. Hydrology9 is usually the lower-cost pick at $199, around $389 below The Coma. Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
24
Different Specs
24
Shared Specs
0
Overall Overlap
0%
Shared Traits
Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heating Style
Close callHydrology9
Conduction
The Coma
Convection (wired ball vaporizer)
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
Hydrology9
$199
The Coma
$588
Device Type
Hydrology9
Portable
The Coma
Desktop
Heating Type
Hydrology9
Conduction
The Coma
Convection (wired ball vaporizer)
Temperature Range
Hydrology9
250°F-430°F
The Coma
200-300°C (392-572°F) recommended by Vices
Chamber Capacity
Hydrology9
~0.5 grams
The Coma
0.2g to 1.6g
Battery Type
Hydrology9
Internal
The Coma
None
Battery Capacity
Hydrology9
2000mAh
The Coma
N/A
Charging
Hydrology9
Micro USB
The Coma
N/A
Power Adjustment
Hydrology9
Modular - 5 stage
The Coma
PID controller, switchable between °C and °F
Chamber Material
Hydrology9
Ceramic
The Coma
Titanium Macro Bowl with an Everlasting titanium screen
Choose Hydrology9 if...
- You want the lower listed entry price ($199 vs $588).
- You prefer a conduction heating profile.
- Your usage leans toward portable and conduction sessions.
Typical price
$199
Sold by To the Cloud Vapor Store
Choose The Coma if...
- You prefer a convection (wired ball vaporizer) heating profile.
- Your usage leans toward desktop and ball vape sessions.
- You prefer The Coma's overall feature mix and form factor.
Prices are read automatically from retailer pages; confirm the price at checkout. Some links are affiliate links, which support Thermal Extractions at no extra cost to you.
Spec Comparison Table
Direct comparison of every spec from each device profile.
24 differ 0 shared
| Specification | Hydrology9 | The Coma |
|---|---|---|
| Price (USD) | $199 | $588 |
| Device Type | Portable | Desktop |
| Heating Type | Conduction | Convection (wired ball vaporizer) |
| Heat Up Time | ~1 minute | — |
| Temperature Range | 250°F-430°F | 200-300°C (392-572°F) recommended by Vices |
| Chamber Capacity | ~0.5 grams | 0.2g to 1.6g |
| Battery Type | Internal | None |
| Battery Capacity | 2000mAh | N/A |
| Charging | Micro USB | N/A |
| Charge Time | ~2 hours | — |
| Dimensions | ~4.5 x ~17.5cm | — |
| Power Adjustment | Modular - 5 stage | PID controller, switchable between °C and °F |
| Chamber Material | Ceramic | Titanium Macro Bowl with an Everlasting titanium screen |
| Brand | Cloudious9 | Vices |
| Coil Size | — | 35mm enclosed coil, wired directly to the PID |
| Heater Material | — | Titanium with an aluminium handle and heat sync hardware |
| Manufacturer | — | Vices, Brisbane Australia |
| Power Options | — | 110V (US and Canada) or 220V (AU, UK and EU) |
| Release Date | 2017 | 2026 |
| Session Style | Session | On-Demand |
| Thermal Matrix | — | ~3500 mixed cut ruby corundum gems, 2 to 2.5mm |
| Warranty | 2 years | Australian Consumer Law cover, no fixed term published. Consumables excluded |
| Water Filtration | Yes | — |
| Water Pipe Adapter | — | 14mm glass joint fitted, 18mm spare included |
Comparison FAQs
What is the biggest difference between the Hydrology9 and the The Coma?
The biggest practical difference is price tier: the Hydrology9 sits at $199 while the The Coma is $588, a gap of about $389 that puts them in different buying brackets.
Which is cheaper, the Hydrology9 or the The Coma?
Hydrology9 is the cheaper option at $199 compared with $588 for the The Coma, about $389 less. Live retailer pricing can shift, so confirm before buying.
What's the difference in heating between the Hydrology9 and the The Coma?
Hydrology9 uses conduction heating, while the The Coma uses convection (wired ball vaporizer). Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Does the Hydrology9 or the The Coma hold more flower?
The Coma has the larger chamber at 0.2g to 1.6g, versus ~0.5 grams on the Hydrology9. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Is the Hydrology9 or the The Coma better for home versus on-the-go use?
Hydrology9 is the take-anywhere choice. It's a portable, battery-powered unit, while the The Coma is built for home use, where bigger heaters, AC power, and larger chambers make sense.
Can I set custom temperatures on the Hydrology9 or the The Coma?
Hydrology9 controls heat with modular - 5 stage, while the The Coma uses pid controller, switchable between °c and °f. Both let you change temperature, just with different levels of precision.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.