Exhaust Fans

A roof vent works by being at the highest point in the space. Where you cut the hole matters more than which vent goes in it.

TRA 12V 280MM Shower Roof Vent with Led Lights

Regular price$170⁰⁰

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TRA 12V Manual Roof Vent Hatch with Fan

Regular price$220⁰⁰

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TRA 12V Electric Rain-Sensing Roof Vent Hatch with Fan & Remote

Regular price$280⁰⁰

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TRA 12V Electric Rain-Sensing Roof Vent Hatch with Fan & Remote (Side Vent)

Regular price$310⁰⁰

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Exhaust Fans

Overview

Exhaust Fans Overview

About Exhaust Fans

A roof vent works by being at the highest point in the space, and where you cut the hole matters more than which vent goes in it.

Hot air and damp air both rise. Cooking steam, shower steam, the moisture from two people breathing overnight, all of it collects against the ceiling and stays there until something pulls it out. A fan in a roof hatch does exactly that, drawing from the top of the space where the problem is and letting fresh air in lower down to replace it.

So position matters. Close to where the steam and heat are made is usually best, within the clearances the vent's installation instructions allow. Some positions, directly above a cooktop for one, need checking against the vent's own limits before you cut. A vent in the wrong place still moves air, but it moves it from somewhere that was already fine.

The range covers a manual hatch you wind open by hand and electric versions with a remote and a rain sensor that close themselves when the weather turns. One of the electric hatches is a side-vent version, which is still a roof hatch rather than a wall vent, and there is a compact vent with built-in lighting for a shower cubicle. All four mount in the roof.

Measure the roof cavity before choosing, because the depth of the frame has to clear whatever is above the ceiling lining.

FAQs

Exhaust Fans FAQs

Why is a 12V exhaust fan essential for a campervan or canopy build?

A 12V exhaust fan provides a critical path for stale air and moisture to leave your enclosed living space. This active ventilation helps prevent mold growth and stops condensation from building up on your internal walls during cold nights. It is a practical addition for managing the environment inside a van or a 4WD canopy.

Removing heat and cooking smells quickly makes your interior much more comfortable for long term travel. Providing consistent airflow is particularly important if you spend a lot of time off the grid in humid or tropical regions. Explore our full range of Ventilation & Cooling to find a setup that fits your rig.

Can these fans be used for both air intake and extracting odors?

Most modern exhaust fans feature a reversible motor that allows them to function as both an intake and an extract fan. This flexibility lets you pull cool evening air into your cabin or switch the direction to push out heat and steam while you are cooking. Having a multi directional fan helps you manage airflow based on the temperature outside.

It is a smart way to keep your interior fresh without needing multiple vents. This type of active cooling is a popular choice for custom fit outs because it manages air movement much more effectively than a static vent. Explore our Rooftop Tents to see how active ventilation improves sleeping comfort.

How much power does a 12V exhaust fan use from my battery?

Standard 12V exhaust fans are very efficient and typically draw between 1 and 3 amps depending on the speed setting. This low power consumption allows you to run the fan for several hours an evening with minimal impact on your house battery. Using the lower settings for overnight ventilation is a smart way to manage your energy levels while still keeping the air moving.

Providing this airflow helps maintain a dry and comfortable cabin without needing a massive power supply. This efficiency is a major advantage for travelers who rely on solar for their daily needs. Explore our Lithium Batteries to see your storage options, or browse our Battery Monitors to track your live system draw.

What size cutout is required to install a standard 12V exhaust fan?

The standard cutout size for most 12V exhaust fans is 355mm by 355mm. This 14 inch square opening is the industry standard for roof hatches and fans across the caravan and campervan industry. While this size is common, you should always verify the exact dimensions of your chosen model before you begin cutting into your roof.

Providing a clean and correctly sized hole is the best way to maintain a watertight seal and achieve a professional finish on your build. Using a high quality structural adhesive during installation helps prevent leaks and keeps the housing secure on rough outback tracks. This simple step ensures your rig remains weather proof through years of travel.