Price (USD)
G Pen Pro edgeG Pen Pro
$90
Hot Rod
$340
G Pen Pro is typically around $250 lower.
Vaporizer Comparison
G Pen Pro vs Hot Rod
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro
Grenco Science $90
VS
Hot Rod
Old Head $340
Editorial Summary
G Pen Pro and Hot Rod are both convection / electronic vaporizers, but they target different priorities. G Pen Pro is usually the lower-cost pick at $90, around $250 below Hot Rod. Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
18
Different Specs
17
Shared Specs
1
Overall Overlap
6%
Shared Traits
Convection Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heating Style
Close callG Pen Pro
Convection
Hot Rod
Convection
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
G Pen Pro
$90
Hot Rod
$340
Device Type
G Pen Pro
Portable
Hot Rod
Desktop
Temperature Range
G Pen Pro
190°C - 220°C (375°F - 428°F)
Hot Rod
N/A
Chamber Capacity
G Pen Pro
~0.25 grams
Hot Rod
~0.25g
Battery Type
G Pen Pro
Internal
Hot Rod
N/A
Charging
G Pen Pro
Micro-USB
Hot Rod
N/A
Power Adjustment
G Pen Pro
Modular - 3 Stages
Hot Rod
Single Dial
Chamber Material
G Pen Pro
Ceramic
Hot Rod
Titanium
Brand
G Pen Pro
Grenco Science
Hot Rod
Old Head
Release Date
G Pen Pro
2017
Hot Rod
2021
Choose G Pen Pro if...
- You want the lower listed entry price ($90 vs $340).
- Your usage leans toward portable and budget sessions.
- You prefer G Pen Pro's overall feature mix and form factor.
Choose Hot Rod if...
- Your usage leans toward desktop and ball vape sessions.
- You prefer Hot Rod's overall feature mix and form factor.
- You value how the Hot Rod balances size, controls, and everyday practicality.
Spec Comparison Table
Direct comparison of every spec from each device profile.
17 differ 1 shared
| Specification | G Pen Pro | Hot Rod |
|---|---|---|
| Price (USD) | $90 | $340 |
| Device Type | Portable | Desktop |
| Heating Type | Convection | Convection |
| Heat Up Time | ~30 seconds | — |
| Temperature Range | 190°C - 220°C (375°F - 428°F) | N/A |
| Chamber Capacity | ~0.25 grams | ~0.25g |
| Battery Type | Internal | N/A |
| Battery Capacity | 2200mAh | — |
| Charging | Micro-USB | N/A |
| Charge Time | <3 hours | — |
| Power Adjustment | Modular - 3 Stages | Single Dial |
| Chamber Material | Ceramic | Titanium |
| Brand | Grenco Science | Old Head |
| Power Adapter | — | AC Power |
| Power Usage | — | 18W (peak 60W) |
| Release Date | 2017 | 2021 |
| Session Style | Session | — |
| Warranty | 1 year | — |
Comparison FAQs
What is the biggest difference between the G Pen Pro and the Hot Rod?
The biggest practical difference is price tier: the G Pen Pro sits at $90 while the Hot Rod is $340, a gap of about $250 that puts them in different buying brackets.
Which is cheaper, the G Pen Pro or the Hot Rod?
G Pen Pro is the cheaper option at $90 compared with $340 for the Hot Rod, about $250 less. Live retailer pricing can shift, so confirm before buying.
Is the G Pen Pro or the Hot Rod better for home versus on-the-go use?
G Pen Pro is the take-anywhere choice. It's a portable, battery-powered unit, while the Hot Rod is built for home use, where bigger heaters, AC power, and larger chambers make sense.
How much flower do the G Pen Pro and Hot Rod hold?
G Pen Pro lists a chamber capacity of ~0.25 grams; the Hot Rod lists ~0.25g.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.