5 Best Roof Ventilators To Boost Your Home's Air Circulation

5 Best Roof Ventilators To Boost Your Home’s Air Circulation

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James

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A roof ventilator is essential to produce a continual flow of air throughout your attic space.

This is important as it prevents air from becoming overheated or prone to moisture, two issues that can be present in both the attic and roof system of your home. You don’t want the temperature and moisture inside and outside of the home to fluctuate.

Why are temperature fluctuations in your roof bad?

When warm air is trapped in your attic during winter, it makes snow melt and refreeze as ice, causing ice dams on the roof. These destroy your gutters and shingles.

On the other hand, hot air that condenses inside your attic can produce mold and mildew growth. If you want to purchase a roof ventilator, you might not know which one is best. Here’s our guide to the best roof air ventilators to protect your home.

Broan-NuTone 345SOWW Surface Mount Solar-Powered Attic, Energy-Saving Ventilator

Short summary

A solar-powered ventilator is a fantastic way to make use of solar energy. This one is a 28-watt attic ventilator that transforms the sunlight into electric power. It provides a maximum 537 CFM (cubic feet per minute) all year round, giving you consistent ventilation.

It’s built with UV-stabilized and rugged ABS plastic and a tempered glass solar panel which can tolerate wear and tear as well as large hail.

It’s really easy to install this ventilator, thanks to its compact build and frame. It has positive stops in its design that make installation even easier. This roof ventilator is a low-profile design so it won’t look unsightly on your home. It doesn’t require any pivoting stands or props, which is an additional bonus.

What’s great about this solar roof ventilator is that its solar cells collect the sun’s energy efficiently without causing you to have to install raised panels or tracking systems.

This best roof ventilator comes with an optional thermostat that’s easy to install while being effective at disabling the motor whenever the temperature reaches below 50 degrees. This is essential to extend the motor’s lifespan. This thermostat is recommended for people who live in areas where cold weather condensation isn’t common.

Quick Facts

Pros

Cons

Best Roof Ventilator

4.5/5

Broan-NuTone

4 SEASONS Solar Powered Polycarbonate Vent

Short summary

This roof ventilator is built with a monocrystalline solar panel that’s efficient, sustainable, and durable. It’s been specially designed for shingled, sloped roof applications. By effectively using the sun’s energy, it draws moisture, heat, and humidity out of your home’s attic so you have better air circulation. This also benefits your roof.

It’s built with UV-stabilized and rugged ABS plastic and a tempered glass solar panel which can tolerate wear and tear as well as large hail.

It’s really easy to install this ventilator, thanks to its compact build and frame. It has positive stops in its design that make installation even easier. This roof ventilator is a low-profile design so it won’t look unsightly on your home. It doesn’t require any pivoting stands or props, which is an additional bonus.

What’s great about this solar roof ventilator is that its solar cells collect the sun’s energy efficiently without causing you to have to install raised panels or tracking systems.

This best roof ventilator comes with an optional thermostat that’s easy to install while being effective at disabling the motor whenever the temperature reaches below 50 degrees. This is essential to extend the motor’s lifespan. This thermostat is recommended for people who live in areas where cold weather condensation isn’t common.

Quick Facts

Pros

Cons

Best Roof Ventilator

4.5/5

Broan-NuTone

Broan 350B Roof Mount 120-Volt Powered Attic Ventilator

Short summary

This powerful attic ventilator eliminates heated air and it works in areas that are up to 1,500 square feet in size, at 1050 CFM. It’s got an interesting design because it’s a PVC dome that offers UV-protection and a 23-gauge metal flashing. This is an important part of the unit because it enables nailing and hot-tar application, so you have various installation options. It can easily be mounted between rafters – just use the included installation template.

This ventilator has a 14-inch steel blade that increases air flow and it works completely automatically. It has a built-in thermostat that’s adjustable for increased user-friendliness, and it’s great that this product comes with the thermostat included so you don’t have to purchase one separately.

This roof ventilator removes stagnant, damp air so that fresh, dry air can flow through your space instead. By having a cooler attic during the hot months, this saves you money on your energy bill and also helps you to increase the lifespan of your air conditioner. It works well to make your living space more comfortable while preventing issues such as mold or mildew, therefore also being healthier for you.

Quick Facts

Pros

Cons

Best Roof Ventilator

4.5/5

Broan-NuTone

Maxx Air Roof Mount/Mounted Power Attic Ventilator

Short summary

This best roof ventilator is heavy duty and built to last. It’s designed to be rugged, thanks to how it’s made with galvanized steel instead of plastic that can become weaker over time or destroyed by the sun’s harsh rays. 

This roof ventilator unit is energy efficient. It has a 2.6-amp draw with a strong PSC thermally-protected motor that is designed to run cool for a longer lifespan. Once you’ve installed it on your roof, you’re sure to get many years out of it.

Best of all, this unit is a low-profile dome design so it won’t be easily noticeable on your roof. It has a galvanized steel mesh grille to protect it against pests, rodents, and birds while always ensuring that there’s enough air circulation in your roof.

It has six-point suspensions that enable greater stability and resistance to weather conditions such as wind. It provides 1080 CFM and can work in areas that are up to 1600 square feet in size. It has 14-inch fan blades that reduce vibration and noise, and prevent heat distortion.

This roof ventilator comes in a variety of colors so you can choose one that best matches your roof style and color. This prevents your roof vent from being an eyesore.

Quick Facts

Pros

Cons

Best Roof Ventilator

4.5/5

Broan-NuTone

Broan 358 Roof Mount 120-Volt Powered Attic Ventilator

Short summary

This is a high-quality ventilator that’s made out of aluminum which is lightweight but strong. Many types of roof ventilators that are on the market have plastic dome covers, so this one is stronger and will last for a longer time.

It removes hot air out of the attic and can work effectively in areas that are up to 1,000 square feet in size, at 1400 CFM. The unit’s housing is made of 23-gage metal flashing that is suitable for nailing and hot tar applications.

This roof vent is equipped with a 14-inch diameter steel blade that is designed to effectively increase your air flow. It’s got a motor that’s built to last, thanks to how it’s thermally protected and permanently lubricated.

It comes with a built-in thermometer that’s adjustable for increased user-friendliness and convenience. It also has an insect screen to prevent pests from entering your home.

Besides using this ventilator in the attic, you can also use it in your garage. It works well to remove excess humidity and heat, as well as unwanted smells. This keeps your living spaces cool and helps you to reduce your energy costs from running a fan or air conditioner all day long.

Quick Facts

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Roof Ventilators FAQ

Now that you have a better idea about the type of roof ventilator you should purchase to keep both your attic and roof in good condition, we can look at some information to know about roof vents, such as how they work and if they’re really as effective as they claim to be.

What are the 4 main types of roof vents for attic ventilation?

While there are many types of roof vents available on the market, let’s explore some of the most popular and common ones.

Ridge vents

These vents are installed at the top of a sloped roof to enable humid air to escape from the attic. This prevents hot air from accumulating, which can lead to overworked air conditioners and shingle damage.

Pros

  • It’s small enough in size to enable you to install it along the roofline for increased ventilation.
  • It blends in with the appearance of your roof, which makes it less visible.

Cons

  • It can be ineffective if not installed properly.
  • It’s not ideal for flat roofs.

Soffit vents

This vent is placed on the underside of the eaves so that fresh air can enter the lower side of the roof. It doesn’t eliminate warm air in the way that ridge vents do, but it certainly regulates the indoor temperature.

Pros

  • These vents are very easy to install.
  • They don’t become blocked easily.

Cons

  • They can accumulate moist air underneath them.
  • They are built for air intake, so if they’re not combined with an exhaust vent they won’t work properly.

Gable-end vents

This type of vent is placed at the center of your attic and you can choose one in a variety of designs. Gable-end vents work in a similar way to a ridge vent by eliminating warm air in the attic.

Pros

  • Gable-end vents are reliable and low in maintenance when compared to motorized ventilation systems.
  • They come in a variety of shapes, sizes, and materials.

Cons

  • They are not always easy to install.
  • They are not compatible with all roof systems, such as hip roofs.

Turbine vents

Finally, turbine vents are in the shape of a mushroom that protrudes from the surface of the roof. They function to eliminate warm air in the attic and the movement of the air enables a more efficient air flow.

Pros

  • These vents are easy to install.
  • They are small but suitable for any property size.

Cons

  • They require wind in order to work.
  • They are highly visible on the roof, which might be off-putting.

Are roof vents effective?

Roof ventilation is essential for your home, and roof vents do work well to increase air circulation. They increase the lifespan of your roof, lower your energy costs, and decrease extreme temperatures. They also work well to prevent damage to your roof, such as by minimizing the risk of your shingles cracking.

Roof vents prevent ice dams from causing damage to your roof. Ice dams occur when heat in the attic mixes with the sun’s heat and this melts snow on your roof. This water moves to the edge of your roof and it freezes. Ice and water accumulate at the roof edges and can end up underneath the roof materials, which not only damages your roof but also your attic and the walls inside your home. By having adequate ventilation, this warm air can escape before it can melt the snow and ice on your roof.

And, by removing hot air from your home, this makes your air conditioner have to work less hard so that you can reduce your energy bill.

How do you tell if your attic is properly ventilated?

There are a few ways in which you can tell that your attic has been ventilated correctly. These include the following:

  • Your roof isn’t leaking or warping. Good ventilation prevents moisture from being trapped inside your attic where it can start to degrade the condition of your roof. When moisture can escape from the attic, this is a sign of good ventilation.
  • You don’t see critters in the attic. If you don’t see many pests in your attic or home in general, this is a good sign that there’s not a lot of moisture to attract them. Warm and damp conditions attract pests as these ensure that they can thrive in your living space.
  • Your roof doesn’t have mold and mildew growth. If you spot mold or mildew, this is a red flag that your attic could be better ventilated to prevent moisture and dampness. If left unattended, condensation can cause your roofing materials to become rusty or corroded.
  • Your roof doesn’t have ice dams. If you can’t see any ice and snow forming at the edges of your roof, you don’t have ice dams that are being produced as a result of poor attic ventilation.

It’s clear to see that you have to regularly inspect your attic and roof to ensure that you have adequate air circulation in your home.

Can rain get in roof vents?

Some roof vents won’t be able to tolerate heavy rain, which is why it’s crucial to check the way the roof ventilator is designed. If the roof air vent sits flat and it has a protected, dome-like hood, but it has unprotected sides, this could be problematic. When the rain is heavy and there’s lots of wind, this could result in the rain getting into the roof vents and causing leaks.

You can prevent water from getting into vents by purchasing deflectors. These are placed over the openings of the vents to prevent rain from being able to get blown into the openings. You can find these deflectors in a variety of colors and sizes, so that you match the vent cover.

When installing your roof vent, make sure that it slips underneath the roof shingles and then use nails to keep it securely attached. When applying nails for this purpose, it’s usually good practice to not insert them too close to the edge of the shingles as this can cause water to accumulate and penetrate the roof.

Conclusion

As a homeowner, you have to be sure that you maintain proper ventilation in your attic. If you don’t, this can make the inside of your home uncomfortable while also causing damage to your roof.

In this article, we’ve looked at the five best roof ventilators to protect your home and roof, and ensure that you can save money on your energy bills.

We’ve also featured information about residential roof ventilators and how they work, so that you can install the correct vents to keep your home cool and energy-efficient. Don’t call the pros – install roof vents yourself to equip your roof against the harsh elements.z

BEST OVERALL

4.5/5

Broan-NuTone​

Power source: Solar
Size: 2.62 x 2.38 x 0.84 inches
Color: Weather wood

Best Roof Ventilator

4.5/5

Broan-NuTone

James

James Weldon is a professional roofing contractor with many years of experience on the job. He does not only handle large projects and provide excellent services for his company’s many clients; James Weldon also dedicates his spare time to teaching others useful tricks of the trade. Using BuildCampus as an avenue to reach many roofers and aspiring roofing contractors, James Weldon continues to provide high-quality educational posts and buying recommendations for anyone who visits the website.