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Manufacturer of Roof Vents, Attic Fans & Solar Fans

Active Ventilation Deemed "Essential" and Open For Business

Active Ventilation Products (AVP) is an essential supplier of roof vents and whole house fans for both FEMA’s emergency housing for displaced families and for HUD’s affordable housing programs. AVP’s staff work quickly and tirelessly to ensure that product is shipped accordingly so that construction of homes for the needy stays on schedule.

Gravity Ventilator, An Aura Roof Vent painted gray for attic ventilation
Aura Roof Gravity Ventilator for attic ventilation

With over 30 years’ experience, Active Ventilation Products “AVP” offers over 700 roof vents to choose from. Browse through our top selling models like, Aura Vents (roof exhaust only), Round Back Vents, Keepa Vents, Pop Vents (roof exhaust version), Pop Vents (air intake version), Witches Hat (roof exhaust only), Universal Vents and soffit vents (air intake only).

If you are seeking roof vents or roof jack vent caps for a duct system, then please consider the Round Back Roof Jack Vent Caps for pitched roofs and Keepa Roof Jack Vent Caps for flat roofs. All roof jack vent caps come with a tailpipe adapter so that they can easily attach to rigid or flex duct. AVP’s roof jacks are great for ventilating bathrooms, range hoods, or wherever ventilating duct is needed.

Commercial Gravity Roof Exhaust Ventilator, with curb mount flange on a roof curb
The Aura Gravity Roof Vent with a curb mounted flange on a roof curb

What do Roof Exhaust Vents do?

Roof exhaust vents remove hot and moist air from the attic. This benefits the attic because it supports dry insulation. Dry insulation provides energy saving all year long.

Where do Roof Exhaust Vents get installed?

In order for roof exhaust vents to work efficiently they must be located at or near the peak of the roof because that’s where the moist hot air rises.

What type of Roof Exhaust Vent should I use?

There are many roof exhaust vents to choose from, and choosing the right one may seem difficult. After all, not all roofs are built the same, which is why AVP offers to assist all customers with their roof vent choices.

What if I can’t find the Roof Vent I’m looking for?

All roof vents are customizable. Choose your color, diameter, height, curb mount flange and or tail piece adapter for ducted systems.

What if I have a flat roof?

Vents manufactured for a flat roof tend to be built differently than vents for a steep pitched roof. The main difference between the two is the height of the roof vent. Vents for a flat roof need to be built taller than vents for a pitched roof. AVP offers vents for both roof types. For more information on roof exhaust vents for flat roof applications please click on: Aura Vents, Aura Vents with Curb Mount Flanges, Round Back Vents with Curb Mount Flanges, Keepa Vents and Witches Hat Vents .

Intake Pop Roof Vent with Curb Mount Flange Installed on a Roof Curb
Our Intake Pop Vent – Here’s a PV-20-C12.

Group of soffit vents, width of 10in.
Group of soffit vents, width of 10in.

Ventilation must be balanced, or air will not move. Exhaust roof vents are only half the picture.

What are Intake Roof Vents?

Intake roof vents are used to bring in cool, dry air near the lowest point of an attic. This creates an air flow. Gravity causes the warmer air to rise,  expelling the wetter and warmer air out of exhaust attic vents near the top of the roof.

Our Vent Calculator is the perfect tool to determine the number of intake and exhaust roof vents needed. Our intake roof vents include Round Back Vents, Keepa Vents, Pop Roof Vents, Universal Vents, and Soffit Vents.

These vent product lines are also available with Curb Mount Flanges, which facilitate installing the vents on a roof curb: Round Back Vents, Pop Vents,

Aura Attic Fan showing fan inside the Aura Fan.
A powerful motor is mounted inside the Aura Fan 14″ with 8″ collar. Product Page

14" Aura Attic Fan with Curb Mount Flange, showing internal fan superimposed.
The 14″ Aura Attic Fan with a Curb Mount Flange, designed for easy installation on a roof curb. Product Page

AVP Attic Fans (Sometimes referred to as “Power Vents“) include fans to keep your attic ventilated in any season, day and night. Thermostat, Humidistat and Shut Off Switch options are available on our house-current fans. 

Our Aura Attic Fans use powerful fans to keep your attic ventilated in any season, day and night. The Aura vent head, used in our Aura Attic Fans, actively exhaust even when the fan is not turned on, due to the unique shape of the Aura vent head louver design. Also available with curb mount flange.

We also sell a Round Back Fan.

12 Inch Diameter Aura Solar Attic Fan Close Up On Roof In Brown - ASF-12-C2-BR
Aura Solar Fan 12 inch, powder coated brown, installed on a shingled pitched roof.

8" Inch Diameter Round Back Solar Attic Fan With 2 Inch Collar In Black - RBSF-08-C2
8 inch Round Back Solar Fan powder coated black, installed on a shingled pitched roof.

The Aura Solar Attic Fan (Sometimes referred to as a “Solar Power Vent“) uses both solar and wind power for optimum ventilation performance, day and night.
The solar panel wattage is over-sized to the fans at a rate of 2 to 1. This results in Cubic Feet per Minute (CFM) production at angles up to 80 degrees. Even during evenings and cloudy days when the solar panel is not hit by sunlight, the inner and outer vertical louvers around the fan allow air to exhaust passively.

Aura Solar Attic Fans are also available with Curb Mount Flanges, ready to install on roof curbs. We also sell Round Back Solar Fans.

Round Back Roof Jack with Tailpipe
Round Back Roof Jack with Tailpipe

What are Roof Jack Vent Caps?

Roof Jacks are metal roof fixtures that have a tailpipe allowing connection to ducting for the venting of bathroom, kitchen, or other duct. Active Ventilation Product has two primary lines of Roof Jack Vent Caps, designed to be mounted on a flat or sloped roof. These are the Round Back Roof Jack Vent Caps which are generally used on residential, sloped roofs, and the Keepa Roof Jack Vent Caps often preferred for flat roofs in industrial or commercial structures.

Commercial Roof Jack - Keepa Ducted Roof Vent in White
3" Keepa Roof Jack Vent Cap Painted White with Tailpipe

Ventilation Systems Balance Intake and Exhaust

Flat Roof Ventilation diagram, Rooftop Ventilation, Intake Roof Vent and Exhaust Roof Vent Illustration on a Flat Roof
We are Experts in Balancing Exhaust and Intake in Ventilation Systems

Our Company Focus is Roof Vents and Roofing Ventilation.

Over 21 years experience using the forces of nature to help you ventilate. The following pages explain some ventilation systems, where all the components balance with each other, keeping attic spaces cool in the summer, dry in the winter.

Here is an article of a nearby installation of over 100 of our roof vents for a large commercial complex.

Martin Kolt President of AVP next to an installation in Teaneck, NJ - PVC roof

Martin Kolt standing next to the Pop Vent with a curb mount flange - installed on a wooden Roof Curb
This installation had pre-installed wooden roof curbs. This Pop Vent was installed in just a few minutes and this was done right before a major rainstorm.

( sales as of Jun 5, 2020)

June 2020 Best Selling Aura Vent AV‑12‑C02

Gravity Ventilator, An Aura Roof Vent painted gray for attic ventilation
Aura Roof Vent for attic ventilation

June 2020 Best Selling Soffit Vent SV‑W10‑L18

Under Eave Vent - Soffit Vent SV-W10-L18-BR
Under Eave Vent - Soffit Vent SV-W10-L18 Shown in Brown

June 2020 Best Selling Round Back Vent RBV‑12‑C02‑CMF

Static Vent Round Back with Curb Mount Flange rbv-12-c2-cmf-angle
Static Vent Round Back with Curb Mount Flange rbv-12-c2-cmf-angle

June 2020 Best Selling Universal Vent (Dormer Vent) UV‑15

Off Ridge Roof Vents - Aluminum Low Profile Universal Vent (Dormer Vent) on Shingle Roof
UV-60 Universal Vent, installed on shingle roof. Off ridge vent suitable for intake (lower on the roof) or exhaust (High on the roof)

Since Jan 1 2020 Best Selling Best Selling Intake Roof Vent PV‑18‑C12‑CMF

Roof Louver for Air Intake - Pop Vent with Curb Mount Flange PV-18-C12-CMF
Roof Louver for Air Intake - Pop Vent with Curb Mount Flange PV-18-C12-CMF

Since Jan 1 2020 Best Selling Exhaust Gravity Roof Vent AV‑18‑C12‑CMF

Exhaust Gravity Ventilator Aura Vent with Curb Mount Flange AV-18-C12-CMF 18″ Diameter, 12″ Collar, Curb Mount Flange for Installation on a Roof Curb. Ideal for Flat Roof and large industrial ventilation.

Since Jan 1 2020 Best Selling Aura Vent Retrofit AV‑08‑RF

Retrofit Aura Vent Cap AV-8-RF
Retrofit Aura Vent Cap AV-8-RF

Since Jan 1 2020 Best Selling PVC Pipe Cap Aura Vent AV‑06‑PVC

PVC Aura Vent Cap AV-6-PVC-black-installed-side
PVC Aura Vent Cap AV-6-PVC Powdercoat black Shown Installed on PVC Pipe (Not included)

Active Ventilation Brand

Roof Vents Logo - Active Ventilation ProductsFor over 30 years we have focused our engineering and creative prowess to make the best roof vents possible.

But hour heart and passion has always been staying connected to our staff and customers. Helping others and giving back to our local community has always been our greatest accomplishment. 

Several categories of vents

Ethan Kolt – Active Ventilation Products response to COVID-19

Since May 2019, Active Ventilation Products (AVP’s) president Martin Kolt has been presenting short videos describing the features and best practices for roof vents and roof vent accessories on AVP’s YouTube channel. At work, Martins role is to oversee factory and office operations. Martin also takes part in designing, prototyping, and engineering new products and new production methods. Martin has been instrumental in facilitating many of AVP’s roof vent lines to be evaluated and certified by Underwriter’s Laboratories, (UL) Texas Department of Insurance, and Florida State. Martin plans on releasing more short videos in the near future, so stay tuned.

Our Smallest Vent RBV‑03‑C02 - 3″ Round Back Vent

Static Roof Vent
Static Vent Round Back RBV‑03‑C02

Roof Vent Sizes?

 Roof vents range in size from 3 inches to 48 inches in diameter, & collar heights (the neck of the vents) range from 1 inch to 12 inches in height. Roof vents are manufactured and engineered for every climate zone, and a wide range of residential, commercial, and industrial applications.

Static Vent Round Back RBV-3-C4-cutaway-and-measurements-cropped
Gravity Ventilator - Aura Ventilator AV-48-C08-cut-away-and-measurements

Our Largest Vent AV‑48‑C12‑CMF - 48″ Aura Vent with Curb Mount Flange

Gravity Roof Ventilator - Aura Vent with Curb Mount Flange
Gravity Ventilator - Aura Vent with Curb Mount Flange AV‑48‑C12‑CMF

Aura Ventilators, Pop Vents, Round Back Vents, Universal Vents & Keepa Vents are UL Certified

All of these roof vents effectively remove heat from under the roof directly to the outside on hot summer days and removes moisture from the attic on cold damp nights.

All of these roof vents carry Florida State Approval, California Wild File Certification, TDI, IBC Compliance and more. These roof vents will exceed your expectations.

Commercial Roof Vents & Industrial Roof Vents

AVP offers Commercial Roof Vents & Industrial Roof Vents that meet Architectural & Building Code specification

Roof Jacks Vent Caps

For Duct Ventilation

Our Roof Jacks are excellent for venting out a bathroom fan or other duct applications.
Made of rust free aluminum, with a 2 inch tail pipe (adapter) to fit existing duct work. The inner vertical louvers of the roof vents act as an insect screen, keeping out wildlife while allowing air to flow without resistance. Its superior design also rain and snow from entering, as the top is not open to the sky. Having a round design makes the vent aerodynamic, which allows it to deflect wind an objects carried by the wind. The low profile and round design of the residential roof jack vent cap is appealing to the eye and with various color options your home will look beautiful. The commercial roof jack vent cap has a standard 11 in. collar height, great for a flat roof install, especially in areas with high rain or snow fall.

The Universal Vent, a low profile off ridge roof vent, designed for steep sloped roofs that can be used for air intake vent and or exhaust.

This design looks great on a shingle roof & it can also be used on a a parapet wall that surrounds a flat roof. When used as an exhaust vent, it allows heat and moisture to escape on the upper portion of the roof, & when placed at the low portion of the roof, it can be used as an air intake vent, similar to a soffit vent.

Commercial Roof Vents & Industrial Roof Vents

Attic Ventilation – Air Intake Vents for Low Slope & Flat Roofs.

In order to exhaust air, you need intake air! Our line of intake roof vents allow your exhaust vents to work efficiently, by bringing in fresh air as your exhaust releases the hot air. All aluminum construction, these intake vents are maintenance free and will not rust! UL certified and tested to withstand wind pressure speeds up to 200 mph.

Residential or Commercial Soffit Venting

Our Soffit Vents are corrosion resistant because of its all aluminum construction. It is rust free and very durable (22 gauge – 0.025″ inch aluminum). The 1/8th inch opening between the louver blades will keep out insects, birds, and animals, thus allowing the air to move through the vent without resistance.

Retrofit Roof Vents & Fans

Leave the old vent base on the roof & replace it with a new roof vent cap or fan.

Our Retrofit Roof Vents are designed to fit on an existing base. Replace your old, worn and noisy vent heads! AVP’s all aluminum constructed Retrofit Roof Vents are silent, maintenance free and will not rust! Built to last and will fit on your existing bases. These vents exhaust heat and moisture from attic more efficiently, extending the life of your roof.

PVC Vent Caps & Fans

Exhaust & Intake PVC Pipe Caps for Schedule 40 & Schedule 80 Pipes.

Protect your PVC pipes. Used for commercial and residential applications, our PVC Vent Caps are a one piece spun lid made out of rust free aluminum. Great for exhausting gases and vapors. Its durable aluminum make can withstand harsh weather and wind forces of up to 200 mph. We have both static and solar fan varieties that will have a long lasting, clean appearance.

Commercial & Residential Attic Fans

Mechanical Roof Ventilation – Motorized Attic Fans for Plenums & Ducted Ventilation

Our Roof Exhaust Attic Fans are designed for efficiency and energy savings. Quality made fans provide powerful air flow for both residential and commercial use applications. Great for cooling your attic or your warehouse space. These heavy duty fans will work hard for you

Residential Solar Attic Fans

Solar Powered Exhaust Fans – For releasing the summer heat.

Our Solar Attic Fans work under direct sunlight to exhaust heat from attic during the summer and moisture in the winter. Use multiple fans for maxim ventilation. They operate quietly and look great on the roof. Choose the color that you like best!

Commercial Solar Attic Fans

Solar Powered Ventilation – For Flat Roofs Needing Added Ventilation & Ducted Ventilation.

Our Solar Fans are powered by direct sunlight. They exhaust out hot air and they save you money. We have a wide selection of colors, diameters and collar heights to suit your needs.

AVP manufactures Mobile Home Roofing Products specifically for HUD, FEMA & Modular Builders. Dave Carter & Associates, AVP’s National Distributor has launched AVP’s money saving products to the market and as a result AVP is experiencing phenomenal growth.

Why Install Roof Vents? (Frequently Asked Questions)

What is roof or attic ventilation?

The goal of roof ventilation is to provide a means of allowing outside air to enter and exit attics and ventilated spaces, so that heat and moisture can leave the building envelope.

What is a roof vent?

A roof vent is an engineered structure that is typically rigid and has two primary functions. First, to allow air to travel through it, and second to prevent insects, rain, snow and any wind-blown debris (including burning embers) from passing through it.

What is a roof vent used for?

Roof vents are used for the purpose of air intake and air exhaust. Having vents of both types installed is required by IBC International Building Code and all local municipalities for steep slope roofs.

What are (air) intake roof vents?

Air intake vents are used to allow outside air to enter into attics. Intake vents should be located low on the roof, or along the lowest eave or soffit of the roof assembly. Intake vents are best when used in conjunction with roof exhaust vents.

(Source: NRCA)

Below are names and pictures of commonly used air intake vents:

  • Off ridge vents
Rendering of UV-45 Universal vents on a shingle roof
  • Individual soffit vents
Group of soffit vents, width of 10in.
  • Roof Louver
Roof Louver, the Pop Vent for roof exhaust
  • Static Vents are non-motorized roof vents
Roof Vents Survive Hurricane Hermine in Florida
  • Passive Vents are non-motorized vents
Installed Aura Vent Metal Roof

Common problem with soffit vents (most popular air intake design)

All intake vents should be installed on the low end of the roof or under the eaves. Since soffit vent are installed under the eaves they run the risk of being blocked off on the interior side of the vent by attic insulation. This problem can be averted by doing a visual inspection of the attic from the inside to make sure that all soffit vents are not blocked off by insulation, storage items and or other materials.  original image

Another way to avoid soffit vents from being blocked is to install baffles. Baffles are placed between rafters keeping insulation from blocking air from the soffit vent below.  original image

In general intake vents should be designed and installed to prevent precipitation, animals and insects from entering the attic space.

NRCA does not recommend the use of drip edge vents as intake vents in northern climates where there is a likelihood of ice damming.

(Source: NRCA)


What is roof ventilation (for steep slope)?

Proper roof ventilation consists of air intake at low points and air exhaust on the high points of the roof. This design system works off of nature’s thermal dynamic, a process called Diurnal Convection original image

(Source: ResearchGate)

Below are some common types of roof exhaust vents:

Static Vents: Are roof vents that are non-motorized vents can be used as a roof exhaust vents or roof intake vents depending where on the roof they are installed. For roof exhaust they are placed near the peak of the roof and for intake they are placed on the lower portion of the roof.
Below are pictures of common static roof vents also called passive roof vents and gravity roof vents.  original image 

quality roof vents on a metal shingle install
Aura roof ventilator installed on a sloped shingle roof

Turbine Vents: Turbine vents and other similar vents rely on wind to rotate the turbine’s fan blades. The spinning of the blades by design rotate to keep out rain and snow, not to expedite the ventilation capacity like may people believe. (Source: NRCA)
Read our article comparing the typical turbine vent to our Aura Ventilator!

Turbine vs Aura Vent - Aura Vents Vs Turbines

Roof Vents designed, engineered and assembled in the U.S.A.