Passyfier® 230 - Sleeved Dehumidifier Vent - Rustic/Condensation Control

Product Information

Ensure that there is a good seal to the loft hatch. Many hatches are very poorly sealed and allow moist air to migrate into the roof space. Use the Passyfier Sleeved Vent Kit where ever practical to maximise the transmission of water vapour. Passyfier 100 Core Vent: With a water vapor transmission capacity of up to 1 liter per 24 hours, this vent requires a 132mm diameter core and is suitable for rooms with a floor area not exceeding 7m². Use the compatible wind blast cowl, with every vent in exposed or coastal locations. Use in conjunction with mechanical extraction in kitchens and bathrooms. escapes by diffusion through Passyfier Vents, which have been tested by ADAS for airflow rate versus applied

Versatility: Passyfier vents come in various sizes, making them suitable for installation in habitable rooms such as bedrooms and living rooms. Until recently very little research had been done to prove the effectiveness of PIV and yet it widely specified. The BRE recently set up a parallel study to investigate the performance of PIV systems and carried out trials in their Watford test house and field studies in 16 Welsh properties. The study concluded with the following key findings:Note: Passyfier Vents are used as an aid to help control humidity and are NOT to be used as a method of providing ventilation to any gas, oil, or solid fuel appliance. occupied building than on the outside . This pressure is completely independent of that in the air. For example, a The Passyfier Sleeved 75AB Vent provides an opening on a section of wall normal to the airflow direction. Airflow through the opening is controlled automatically by the intervening mineral wool slab and thereby avoids undue draughts. They allow air to flow through a mineral wool slab in a controlled manner, tapping into the pressure differences between interior and exterior spaces to allow moisture-laden air to escape from your home.

The unit is designed to be very unobtrusive, with a 6" (152mm) internal white plastic grill. Externally all that can be seen is a 6" white plastic external grille. Installing Passyfier vents is relatively simple and can be done by most DIY enthusiasts without any professional assistance. The manufacturer provides detailed instructions with each vent, but here's a basic installation guide to help you get started.

How to Reduce Condensation in a Domestic Property Using Passyfier Sleeved Wall Vent Kits

The opening where the Passyfier vent will be installed must be cleaned and prepared beforehand. Remove any loose debris, paint, or dirt and ensure that the surface is smooth and level. Condensation is a complex subject, primarily ventilation is the answer but this can be problematic in the cold eg during winter. There are lots of opinions on prevention but as a fully trained and qualified surveyor I can confirm that every property is different. The best solution is an air heat recovery unit which heats up incoming fresh air using the warm stale humid air which it exhausts at the same time. The unit contains a matrix through which the warm humid air from your property is directed as it is extracted to the outside. The fresh but cold external air is then pulled in accross this matrix warming it up and giving you pre heated fresh air into your home or property. These fans are now up to 92% efficient at heat recovery and 90% efficient for power consumption. These units efficiently combat condensation and improve air quality within the home. Some units cost less than a lightbulb to run. Customizable Appearance: The external cowls of Passyfier Vents come in a range of colors, allowing them to match your home's exterior appearance.

Internal grilles in white plastic, plaster, brass & stainless steel with built in fly screens. Plastic version has extra coverage for ease of retro fitting. Important Note: Passyfier vents must not be used for providing ventilation to gas, oil, or solid fuel appliances. Silent Operation: Passyfier dehumidifier vents are non-mechanical, meaning they have no moving parts, making them completely silent and unobtrusive.Once you have created the appropriate opening for your vent, you can then insert the Passyfier Vent into the opening and secure it in place using the provided fixings. Be sure to follow the manufacturer's instructions carefully to ensure a proper installation. I’d be understating the case if I said that results were not particularly encouraging and an interesting point that was made is that the occupants perceived improvements or benefits were far greater than were actually proven. Clearly for some occupants there was a psychological benefit or placebo affect taking place. The last time I wrote about the proven poor performance of PIV I had damp industry salesmen stating their disagreement and commenting about how great PIV was and how they’d had a ‘masterclass,’ not just a class, but a masterclass in ventilation from someone at the BRE involved in this study but this doesn’t change the findings and we simply don’t ever specify PIV and have never needed to. Positive Input Ventilation (PIV) or Expensive Fan Heater? Integrated Fly Screen: Passyfier vents come equipped with an internal white plastic grille with an integrated fly screen to keep insects at bay. The first step in installing Passyfier vents is to determine where you need them. Passyfier vents are ideal for installation in areas habitable rooms, such as bedrooms and living rooms. Keep in mind that the vents should be installed at a maximum distance of 12 inches below the ceiling height.