I need ventilation. What is the best roof fan with a rain sensor that closes automatically?

1. 1MaxxAir62%
2. 2Dometic50%
3. =3Hike Crew33%
4. =3RecPro33%

To help narrow down the best fit, could you let me know:

• Is this installation for an RV/camper or a residential/shed application?
• Do you prefer control via a wall switch, a handheld remote, or a ceiling keypad?

dometic.com

For an alternative, the MaxxAir MaxxFan Plus 00-04500K also has an automatic rain sensor that closes the lid and shuts the fan off when rain or snow is detected, with 10 speeds and roughly 900 CFM.etrailer

• Kohree Deluxe RV Roof Vent Fan - $236.99 (Kohree)

If this is actually for your house attic rather than an RV/van, tell me that and roughly how many square feet the attic is. I would recommend a different type of fan—ideally one with a weatherproof roof housing rather than an RV-style rain-closing lid.

The key differences between these top choices break down as follows:

1. Dometic Fan-Tastic Vent Model 3350 / 7350
   • How it works: Features an electronic moisture/rain sensor directly on the exterior grille. The moment raindrops hit the sensor, the motor automatically closes the dome lid and shuts off the fan . Once the sensor dries out, the Model 7350 (with remote) can be configured to resume operation, though manual intervention or button pushing is typical depending on exact sub-models.
   • Key Features: Fits standard 14'' × 14'' roof openings, built-in thermostat, reversible airflow (intake or exhaust), and a manual override knob for absolute emergency closure if power is lost.
   • Best for: People who want a tried-and-true, highly reliable automatic rain-closing unit with seamless interior climate control. You can check options and details on the [Dometic 7350 Fan-Tastic Vent Product Page](https://www.dometic.com/en-us/product/dometic-7350-fan-tastic-vent-roof-fan-9108870595).[[1]](https://www.youtube.com/watch?v=k8mZlKJbXQ8)[2]dometic.com
2. MaxxFan Plus Series (Model 00-04500K)
   • How it works: Unlike the *MaxxFan Deluxe * (which has a permanent built-in physical plastic rain cover allowing you to leave the lid open in a downpour without a sensor), the MaxxFan Plus line features twin lifting arms, a powered remote control, and a dedicated electronic rain sensor that automatically closes the flush lid when wet.
   • Key Features: Offers 10 distinct speeds for both intake and exhaust, a powerful 12-inch, 10-blade fan, flush-mounted aesthetic on the roof when closed, and the ability to run with the lid closed to act like a standard ceiling air circulator.
   • Best for: Those who prefer a sleek, modern profile when the lid is shut and high-precision 10-speed airflow control. You can review pricing and availability via listings like the Go2marine MaxxFan Plus Listing.[1]

To help narrow down the absolute best choice for your project, tell me:

• What type of vehicle or structure are you installing this on (RV, van conversion, cargo trailer)?
• Do you prefer a handheld remote control or standard ceiling-mounted manual switches?

Are you installing this in an RV/camper van or a stationary building/shed , and do you prefer control via a wall/ceiling keypad or a wireless remote?

Dometic explicitly confirms that the rain sensor automatically closes the lid when rain is detected.Dometic+1

One important distinction: if this is for a house attic, rather than an RV/van, I would not choose an RV fan. Residential roof attic fans generally use a permanent weatherproof roof hood rather than a rain-sensing motorized lid.bobvila.com+1

If you tell me RV/van, house attic, garage, shed, or another building, I can narrow it down to the best rain-closing model, including the right CFM and current price.

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• Overview: Widely considered the gold standard for automatic-closing rain-sensor fans. It features an electronic lift motor that automatically shuts the smoke-tinted lid tight the moment moisture hits the onboard rain sensor.
• Key Specs: 10-speed fan motor moving over 900 CFM of air, intake and exhaust capabilities, built-in thermostat, and includes a handy remote control alongside ceiling keypad controls.
• Where to look: Check specs and purchase options via retailers like Nomadic Supply Company or Panther RV Products.[1]

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• Overview: A fantastic, slightly more budget-friendly alternative that doesn't skimp on features. It includes a fully automatic thermostat mode and a responsive rain sensor that automatically retracts/closes the lid and stops the fan upon detecting water.
• Key Specs: 10-speed reversible fan, built-in metal mesh screen, temperature thermostat ranging from 29°F to 99°F, and a digital LCD remote control. Fits standard 14'' × 14'' openings.
• Where to look: View product details directly on the RecPro Vento Deluxe Product Page.[1]

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• Overview: A strong contender featuring an electric lift and integrated rain-sensing technology. It is built for seamless hands-free operation during sudden weather changes and fits standard 14'' × 14'' cutouts.
• Key Specs: Multi-speed reversible fan (forward/reverse settings), power lift operation, and included remote control.
• Where to look: Find availability via suppliers like United RV Parts.[1]

(Note: If you are looking for a stationary residential attic roof fan rather than a 12V RV/van vent, specialized options like the iLiving Smart Solar Attic Fan utilize smart thermostats, though automated rain-closing mechanisms are rare on heavy residential gable/roof attic vents because they are naturally weather-protected or meant to withstand external elements.)

To help narrow down the best fit, tell me:

• What is the application (RV, camper van, enclosed trailer, or house)?
• Does your opening match the standard 14 × 14 inch size?