In some houses there is not enough under floor ventilation as they do not have enough vents or they are too small. We have a number of systems to help in these situations, based on our in-line fans. The advantage of using the fans is that they are generally more powerful than mechanical or solar systems, are independent of weather conditions and have more flexibility in terms of installation.

A typical system consists of a axial in-line exhaust fan capable of heavy usage (usually for a few hours every day), some ducting and one or more vents. Most people will connect the fan to a timer and set it up to run for a few hours in the morning and afternoon. The whole system would typically be installed under the floor but it can be placed in other areas and just run some ducting to the area requiring ventilation.

Note that it is important to achieve good cross-ventilation by placing the fan as close as possible to the opposite side of where the outside air will come in. It is important to block any openings near the fan to improve air circulation.

Systems start at $130 for an in-line fan with a ball-bearing motor for long life, a vent and some ducting.

More information by downloading a short pamphlet, please click here to read.