The value pick: Carbonogy 12V RV Roof Vent Fan with Remote, Reversible Airflow & Rain Cover
Free shipping & free 30-day returns (prepaid label, no restocking fee) — plus 10% off with code RVSAFE10. Ships from Upland, CA.
The Fan-Tastic Vent — now sold under Dometic's name — practically invented the powered RV roof fan, and its 12", 10-blade fan is still a benchmark for raw air movement. The current lineup runs from the basic Model 1250 to the Model 3350 with automatic dome lift and a rain sensor. Here's how the Carbonogy 12V roof vent fan stacks up against each tier — and where the Fan-Tastic still makes sense.
The lineup, compared
| Feature | Carbonogy 12V Fan | Fan-Tastic 1250 | Fan-Tastic 2250 | Fan-Tastic 3350 |
|---|---|---|---|---|
| Fits 14"×14" opening | Yes | Yes | Yes | Yes |
| Fan speeds | 10 gears | 3 | 3 | 3 |
| Reversible airflow | Yes | Yes | Yes | Yes |
| Thermostat | Yes — LCD panel + remote (−2°C to 40°C) | No | Yes | Yes |
| Remote control | Included | No | No | No |
| Dome / lid | Fixed low-profile rain cover | Manual crank lift | Manual crank lift | Automatic lift + rain sensor |
| Can it vent during rain? | Yes — fixed cover, side vents, IPX4 | No — close the dome | No — close the dome | No — rain sensor closes the dome |
| Dust filtering | Washable filter + insect screen | Insect screen only | ||
| Power draw | ≤ 0.25 A default gear; ≤ 1.6 A max | Higher on high speed (12" 10-blade fan) | ||
The big difference: what happens when it rains
This is the one to understand before anything else. A Fan-Tastic Vent's dome must be closed in rain — the premium 3350's rain sensor automates exactly that, shutting the dome (and your ventilation) the moment it gets wet. But rain is precisely when a camper needs venting most: everyone's inside, wet gear is steaming, windows are shut, and condensation is building. The Carbonogy's fixed aerodynamic rain cover takes the opposite approach — the fan keeps venting through weather, with side vents passing air even with the lid closed and an IPX4-rated housing. (Fan-Tastic owners often solve this by adding a separate aftermarket vent cover — an extra purchase and a bulkier roof profile.)
Speeds, control, and comfort
Three speeds was generous in 1990; today it means the jump from "low" is often too loud for sleeping and "high" is overkill. Ten gears let the Carbonogy sit exactly at the airflow-to-noise point you want — at its default gear it runs at or under 29 dB, quiet enough to forget it's on. Add the remote (no Fan-Tastic in this lineup has one — change speed from bed instead of standing on the dinette) and a thermostat that even the mid-tier 2250 only partially matches, and the everyday living experience tilts clearly toward the Carbonogy.
Where a Fan-Tastic Vent still makes sense
Honesty corner: the Fan-Tastic's 12", 10-blade fan moves a serious volume of air and the product line has decades of proven durability with excellent parts support under Dometic — the same reason we stock Dometic parts ourselves. If you're matching an existing Fan-Tastic installation, want the simplest possible 3-speed knob interface, or specifically want the auto-closing rain sensor behavior of the 3350 (for example, a rig that's often left unattended with the vent open), it remains a solid, well-supported choice.
Which should you buy?
- Buy a Fan-Tastic if you want the legacy name with the simplest controls, or the 3350's auto-close-when-wet behavior for an often-unattended rig.
- Buy the Carbonogy 12V fan if you want to keep venting in the rain, 10 speeds instead of 3, a remote and thermostat included, dust filtering, and a tiny power draw — with free shipping and a 30-day no-restocking-fee return window.
FAQ
Will the Carbonogy fan replace my old Fantastic Fan directly?
In almost all cases yes — both use the universal 14" × 14" roof opening. Confirm your cutout size and roof thickness (27–80 mm mounting range), then it's the standard remove–seal–wire swap covered in our replacement walkthrough. For the full decision process, see Replacing a Fantastic Fan: What Fits in the Same Hole.
Which moves more air?
Both move far more air than a basic bathroom-style fan, but manufacturers rate airflow under different test conditions, so cross-brand numbers aren't directly comparable. In practice, speed range, rain behavior, and noise decide day-to-day satisfaction more than headline airflow.
What about the MaxxAir MaxxFan?
That's the other flagship — see our separate Carbonogy vs MaxxAir MaxxFan Deluxe comparison.