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Envira-North Systems Ltd. is thrilled with the positive response to their Altra-Air Fan. These fans are a green power breakthrough which allows our High Volume Low Speed (HVLS) fans to deliver previously impossible levels of performance.

Our energy efficient ceiling fans features a five-bladed design that can move more air than ever before with 20% more efficiency. Altra-Air HVLS fans blanket a very large area with constantly moving air to create an expansive comfort zone.

| Our Fan Family

At Envira-North Systems Ltd we are proud to offer an extensive line up of ventilation systems. The crown jewel of our product line up is our selection of energy efficient HVLS fans:

5 Blades

Available in 5 Sizes

Commercial / Industrial / Agriculture Applications

Nord Gear Motor

3 Year Warranty

more info on Altra-Air Fans...

3 Blades

Available in 2 Sizes

Commercial / Industrial / Agriculture Applications

Nord Gear Motor

1 Year Prorated Warranty

more info on Alite3 Fans...

5 Modulated Blades with Varying Degrees Angle of Attack

Available in 1 Size

Commercial / Retail

Nord Gear Motor

15 Year Warranty

more info on Jazz Fans...

| Knowledge


In most large buildings, heaters are mounted overhead so as to not interfere with the space. This creates a heat gradient differential of 10 - 20 degrees Fahrenheit from floor to ceiling.

Because heat rises a situation called 'stratification' occurs. The heaters are now heating the top 2/3 of the building, working overtime to force heat down to the floor and at thermostat level.

By thoroughly mixing the air, the Altra-Air fans can virtually eliminate the temperature differential (or de-stratify) between the ceiling and the floor. Thermostat settings can be reduced without any loss of comfort, resulting in a reduction in heating costs.


Altra-Air fans provide an efficient and cost effective alternative to cooling environments where air conditioning is not feasible or can be unhealthy. This is especially true when non-disruptive cooling is desirable to improve comfort for the interior environment.

The fans do not cool the air. They work as a occupant cooling system. When perspiration evaporates off the body, it feels cool because evaporation moves body heat away from the body. One Altra-Air fan can make a human's skin feel at least 5 - 9 degrees Fahrenheit cooler. The fans also reduce reduce humidity, which adds to the feeling of comfort.

Alternatively, Altra-Air fans can work in conjunction with air conditioned spaces. Operating the fans on slow speeds creates a constant moving mass of air inside the space. This limits allows for a higher temperature set point and reduces compressor run time.