JanAire RidgeVents

JanAire Ridgevent — Automatic with Vinyl Bladders

The concept of natural ventilation has been around for a long time. Everyone knows that hot air rises. The problem has always been how to regulate the amount of hot air passing through the ridge of a structure.

In the past, various manually operated systems came and went, they just didn’t work well. Most of them shared two common faults: installation required extensive remodeling & farmers were totally responsible for the operation. Farmers had to guess where to set the ridge opening every time the wind or temperature changed. If they didn’t adjust the ridge correctly, they faced wide temperature fluctuations in the barn, and, sick livestock.

The first automated ridge vents weren’t much better. They contained all types of expensive and troublesome “wizardry”, including cables, pulleys, winches and actuators.

Then the idea of using air compressors, electric pneumatic controls, and air cylinders came along. Farmers realized these automated ridge vents were nothing more than a mechanical nightmare! They knew there must be an easier way!

JanAire designed a Ridge Vent that met the farmer’s needs: Simplicity & Automation


A JanAire Ridge Vent can be installed with a 5 inch wide single bladder, or, two 10 inch or 15 inch wide double bladders.

This photo  shows an interior view looking up through a 10 inch Ridge Vent in the open position, allowing hot air to ventilate.



How does the JanAire Ridge Vent work?

A thermostatically controlled blower keeps the bladder inflated to maintain optimal interior conditions. When the sensor says ventilation is required, the blower shuts off to deflate the bladder. Excess warm air then rises freely through the ridge opening.

The bladder in a JanAire Ridge Vent is made from a durable 20 oz. vinyl, nylon material that will give you many years of dependable service.

Our Ridge Vents are built with an open design which means there is no cover over the top of the ridge vent opening. We do this because when naturally moving air turns a corner it loses half of its velocity.

An example would be: a 10 inch wide covered ridge would move the same amount of air as a 5 inch open ridge.

The sides of our Ridge Vent are 11 inches in height which aids the venting effect when the wind blows across the ridge. These tall sides will also prevent wind driven rain from blowing up the roof and dropping into the opening.

The maximum length of our JanAire Ridge Vent we would recommend is 80 feet, but, depending on the zone requirements, two 80 foot units could be driven head to head with one drive.

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