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A 12V camper-van fan is either a small cabin circulator or a roof exhaust system, and the installation changes completely between them. Caframo fans direct air without cutting the roof and draw less than 0.35A at 12V. MaxxFan and Fan-Tastic roof units need a framed roof opening, sealant, and a fused circuit; they exchange stale air rather than merely moving it around. For a full-size roof vent, measure the standard 14 by 14 inch opening and roof thickness before shopping. A compact MaxxFan Dome Plus uses a 6-1/4-inch hole for bathroom or galley exhaust. Choose rain sensing, remote control, or low battery draw based on how the van is used overnight.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Caframo Sirocco II 12/24V Gimbal Fan | $136.95 | Amazon · eBay |
| 2 | Caframo Bora II 12/24V Cabin Fan | $92.99 | Amazon · eBay |
| 3 | Maxxair MaxxFan Original 4301 | $177.02 | Amazon · eBay |
| 4 | Maxxair MaxxFan Plus 4000 | $240.49 | Amazon · eBay |
| 5 | Maxxair MaxxFan Plus 4500 | $387.51 | Amazon · eBay |
| 6 | Maxxair MaxxFan Deluxe 7500 | $406.65 | Amazon · eBay |
| 7 | Dometic Fan-Tastic Vent 3350 | $402.99 | Amazon · eBay |
| 8 | Maxxair MaxxFan Dome Plus 00-03810B | $189.99 | Amazon · eBay |
The picks, in detail
Caframo Sirocco II 12/24V Gimbal Fan
This direct-wire gimbal fan is for moving air at a bunk, galley, or desk without modifying the roof. Its 12/24V auto-sensing motor draws only 0.12A on low and 0.35A on high at 12V, while the cam lock directs its 7-inch blades through 360 degrees.
- 12/24V auto-sensing direct-wire supply
- 0.12A low and 0.35A high draw at 12V
- 125-185 CFM over three speeds
- 360-degree gimbal; 3.8 inch stowed depth
- Lowest documented draw in this selection
- Four shutoff timers: 3, 6, 9, or 12 hours
- No roof cutout or exterior sealant required
- Circulates cabin air but cannot exhaust humidity outdoors
Caframo Bora II 12/24V Cabin Fan
Bora II is the smaller fixed-mount cabin fan for directing air into a sleeping berth or compact work area. It uses a 12/24V auto-sensing direct-wire supply, provides three digital speeds up to 155 CFM, and draws 0.23A maximum according to Caframo.
- 12/24V auto-sensing DC input
- 0.13A low and 0.23A high published draw
- 90-155 CFM across three speeds
- Swivel adjustment and locking cam mount
- Lower maximum draw than a roof vent
- Mounts sideways, upright, or downward
- Front and rear safety grills
- Does not exchange interior air with outdoors
Maxxair MaxxFan Original 4301
The Original 4301 is the simpler full-size roof exhaust option: a manual lid and four-speed exhaust fan rather than a remote-controlled reversible system. It fits the standard 14 by 14 inch roof opening and can run with its lid either open or closed for interior circulation.
- 12V four-speed exhaust fan
- Manual lid operation
- Standard 14 by 14 inch roof opening
- Can run with lid open or closed
- Fewer controls than the Plus and Deluxe versions
- Full-size format uses a common RV roof opening
- Closed-lid mode circulates cabin air
- Exhaust-only; it does not offer powered intake
Maxxair MaxxFan Plus 4000
The white 00-04000K is a manual-lift, 10-speed roof vent with thermostat and reversible 12V airflow. It moves up to 900 CFM through a 14 by 14 inch opening, has a documented 5A draw, and can run with the lid shut in ceiling-fan mode.
- 12V reversible 10-speed fan
- Up to 900 CFM; documented 5A draw
- Manual-lift lid with built-in thermostat
- Fits 14 by 14 inch openings in 2-6-1/2 inch roofs
- Intake and exhaust are both available
- Thermostat can cycle the fan automatically
- Removable insect screen needs no tools
- No automatic rain-closing sensor on this manual-lift version
Maxxair MaxxFan Plus 4500
The smoke-lid 00-04500K adds powered lift, remote control, and a rain sensor to the full-size MaxxFan Plus layout. It has a reversible 10-speed 12V fan, uses a standard 14 by 14 inch opening, and needs at least a 5A circuit.
- Powered-lift smoke lid with rain sensor
- Remote-controlled reversible 10-speed 12V fan
- Standard 14 by 14 inch cutout
- Minimum documented circuit requirement: 12V, 5A
- Rain sensor closes the lid in wet weather
- Remote operates the powered lid and fan
- Runs in ceiling-fan mode with lid closed
- Costs more than the manual 4000
Maxxair MaxxFan Deluxe 7500
The 00-07500K is the remote-controlled Deluxe choice for a full-size roof opening, with thermostat, reversible 10-speed airflow, and powered lift. It fits 14 by 14 inches, has a published 1-5A 12V draw, and its smoke cover is designed to let the fan operate in rain.
- 12V 10-speed intake/exhaust fan
- Published power draw: 1-5A at 12V
- Remote, thermostat, and powered lift
- Standard 14 by 14 inch roof cutout
- Rain-cover lid supports wet-weather ventilation
- Remote is useful from a bed position
- Thermostat and reversible airflow are included
- Requires a 5A-capable circuit at maximum draw
Dometic Fan-Tastic Vent 3350
Dometic’s current 3350 combines a three-speed reversible 12V roof fan with automatic dome lift, thermostat, and rain sensor. It fits a standard 14 by 14 inch opening; a manual knob can close the lid in an emergency if the powered controls are unavailable.
- 12V reversible three-speed roof fan
- Automatic lift dome and rain sensor
- Built-in thermostat
- Fits standard 14 by 14 inch roof opening
- Rain sensor protects the opening without manual intervention
- Manual emergency closing knob
- Screen and blade are removable for cleaning
- Three speeds offer less airflow adjustment than a 10-speed MaxxFan
Maxxair MaxxFan Dome Plus 00-03810B
The Dome Plus is the compact exhaust choice for a shower, galley, or other small compartment where a 14-inch vent will not fit. It installs in a 6-1/4-inch opening, moves up to 200 CFM, draws 2A, and includes a separate-switch LED ring.
- 12V exhaust fan with up to 200 CFM
- 6-1/4 inch circular cutout; fits 1-6 inch roofs
- 2A documented power draw
- Manual push-button lid and integrated LED light
- Much smaller opening than a standard 14 by 14 inch roof vent
- Built-in rain shield avoids a separate cover
- Can circulate cabin air with the lid closed
- Exhaust-only when the lid is open
Buying tips
- Separate cabin circulation from roof exhaust: a gimbal fan needs no roof cutout.
- For full-size vents, measure the finished 14 by 14 inch opening before ordering.
- Size the fused circuit for the documented maximum draw, not the low-speed draw.
- A reversible roof fan can intake or exhaust; the Dome Plus is exhaust-only when open.
- A rain sensor closes the lid automatically, while a built-in rain cover permits wet-weather ventilation.
- Roof sealant is a separate purchase on many full-size vent kits.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.