Eaves Vents positive ingress

Conclusive research by Condor Kinetic shows that efficient roof ventilation is dictated by air ingress. published 10/02/2022

 

Having a fan on the roof to extract the hot air out is not the best approach especially when considering that all roof items on a building require periodical inspection and having a motorised fan at the top of the roof is both impractical and inefficient.
The reality is that electric motors operating above 60 degrees will have an early failure rate, reason being that electric motor manufacturers will not guarantee operation in 60+ degree temperatures.
The average internal temperature at the top of a roof is 68 degrees so considering the cost of contract maintenance, cleaning and or replacement, it is best to keep all in easy access, and no higher than need be.
Whether the roof ventilator be passive or powered, the air ingress via the eaves vents dictates overall efficiency, so it makes sense for the ingress at the eaves to be powered, and not the egress, particularly when it comes to roof ventilation.
Using a Condor I&E Series Eaves Vent makes sense because it’s important to have a positive ingress of ambient cool air into the roof cavity and allow pressure to push out the hot air out of a passive vent at the top.

The Condor I&E Series Eaves Vents provide the air ingress necessary to maximise and improve the flow through in the roof attic area, and it can be speed/ flow controlled.
Available in solar powered 12vdc or 240vac, the Condor IE eaves vent will fit all eaves, however keeping in mind that the heat purge cycle is in the evening so whatever you install has to function of an evening and solar will not do it.
The design of the eaves vent is also critical particularly in BAL criteria applying to those areas prone to high fire risk.

 

 

 

 

 

Venting roof using eaves vents

 

It is also possible to ventilate a roof void via the eaves vents exclusively by designing the ingress to egress dynamics of the roof void.
As pressure has no allegiance to direction, displacement can be initiated through positive ingress and passive egress. The laminar flow keeps the insulation cooler and reduces energy storage allowing the roof to cool faster of an evening.
During the winter, heat trapped in the upper regions can be redirected into the rooms below thus saving on seasonal heating costs.
One can get so caught up in being energy efficient that focus on the fundamental aim of the exercise is lost. The purpose is to get improve living standards and gain maximum potential with the minimum cost, not the minimum cost sacrificing product life and performance.
Condor design and manufacture their products according to their research efforts.
Naturally it goes without saying that if you find a better product, irrespective of where it’s made, buy it!
Condor 12vdc and 240vac eaves vents are fully fabricated in 304 & 316 stainless steel, not plastic, have a 6 year warranty on the bearing fan motor, and a 20 year warranty on the vent itself.

 

 

Condor Kinetic roof ventilation

 

 

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