MaxxFan vs Fan-Tastic: Which Roof Fan for a Van?
MaxxFan Deluxe vs Dometic Fan-Tastic Vent 3350: speeds, airflow, rain shield vs rain sensor, controls and roof opening size, and which one suits your van.

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Choose the MaxxFan Deluxe if you want a built-in rain shield and 10 speeds; choose a Dometic Fan-Tastic if you want a lower dome that closes itself when its sensor detects rain. Both fit a standard 14 x 14 inch opening.
Side by side
| MaxxFan Deluxe | Dometic Fan-Tastic Vent 3350 | |
|---|---|---|
| Opening | 14 x 14 in (11 in version too) | 14 x 14 in, 350 mm cutout |
| Speeds | 4 or 10, by model | 3 |
| Airflow | Up to 900 CFM (10-speed models) | 920 m3/h (about 540 CFM, our conversion) |
| Direction | Exhaust only or intake and exhaust, by model | Reversible |
| Rain | Built-in rain shield | Rain sensor closes the lid |
| Thermostat | Available | Built in (analog) |
Rain
The difference that matters most: MAXXAIR builds a rain shield over the MaxxFan Deluxe's vent, while Dometic's rain sensor automatically closes the Fan-Tastic's lid. In a rainy climate, ask how each model behaves in a downpour before you choose.
Airflow
MAXXAIR says its 10-speed Deluxe models move up to 900 CFM. Dometic lists 920 m3/h for the Fan-Tastic Vent 3350, about 540 CFM by our conversion (35.3 cubic feet per cubic meter).
Who should buy which
- MaxxFan Deluxe: more speeds, intake and exhaust, a built-in rain shield.
- Fan-Tastic: a lower dome and automatic closing; the 7350 adds variable speed and a thermostat (per the Amazon listing).
More fans: best roof vent fans.
Frequently asked questions
Is MaxxFan better than Fan-Tastic?
It depends on what you value: the MaxxFan Deluxe has up to 10 speeds and a built-in rain shield, while the Fan-Tastic has a lower dome that closes itself with a rain sensor.
Do MaxxFan and Fan-Tastic fit the same hole?
Yes. Both fit a standard 14 x 14 inch roof opening; Dometic lists a 350 mm cutout.
How many CFM is the Fan-Tastic 3350?
Dometic lists 920 m3/h, which is about 540 CFM by our conversion.
Which fan is quieter?
Neither maker's page we read gives a noise rating, so compare owner reports on the speeds you will use at night.
Can I replace a Fan-Tastic with a MaxxFan?
Usually, since both fit 14 x 14 inch openings, but check roof thickness and trim with the maker's instructions.
Sources
- MAXXFAN Deluxe, MAXXAIR
- Dometic FanTastic Vent 3350, Dometic
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