Picking a roof fan may not seem like a big deal, but it makes a huge difference over time. Get it right, and you’ll have fresh air and a roof that lasts much longer.

Why is a roof fan important?

Why bother with roof ventilation at all? In fact, it serves as a barrier between the interior and the weather conditions outside. Moisture, condensation, intense heat – if not controlled, a whole range of problems may appear. A series of rainstorms or melting snow can turn the attic into a veritable greenhouse. Moisture seeps into roofing materials, destroying them. And overheating leads to accelerated aging of both the roof and internal structures.

A roof fan solves this problem by expelling excess heat and humid air, maintaining a normal climate in the space. This is especially important for warehouses, offices, and attics where such conditions often arise. Without good ventilation, the roof ages faster, and materials degrade.

What performance is needed?

Performance is probably the first parameter to consider. It’s not enough to just choose any fan. You need to precisely calculate the volume of air that needs to be vented. Approximate figures for different types of spaces:

• for an apartment or a country house – 200-500 m³/h is enough;
• medium-sized office – 500-1000 m³/h;
• warehouse or industrial facility – 1500-5000 m³/h.

The Vents catalog includes options that meet all these parameters. For example, VKHC 2E 250 with a power of 184 W and an airflow of 1485 m³/h is perfect for a medium-sized industrial space. And if it’s for a country house, something like the VKVz 2E 190 with an airflow of 610 m³/h at 69 W is a great choice.

The key to longevity

Material strength and durability are critical, as the device is constantly exposed to harsh external conditions: rain, snow, temperature fluctuations. If the fan’s casing can’t withstand these conditions, it will quickly fail.

That’s why it is important to consider devices with aluminum housings, like the Vents VKHC models. Aluminum is corrosion-resistant and retains its strength even in extreme conditions. But there are more budget-friendly options with coated steel housings (e.g., Vents VKH). These fans also offer good resistance to external impacts and work reliably under real conditions.

Motor power – should you look for EC?

You can choose between fans with traditional asynchronous motors, such as VKH models, and those with EC motors (electronic commutated), like VKHC EC. While traditional motors do the job well, EC motors offer some nice benefits. They are more energy efficient and can automatically adjust their speed to suit changes in load, thereby providing smoother and longer-lasting operation.

EC motor benefits:

• energy savings (up to 30% compared to traditional models);
• durability;
• quieter operation.

If saving energy and extending lifespan matter most, EC motors are a great pick. But traditional motors are still solid, reliable choices for plenty of situations.

The choice is yours. Finding the perfect match is easy with Vents.

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