For ventilation in smaller areas such as cupboards, wardrobes or box rooms, see the Passyfier 75AB Sleeved Vent. Looking at Ventilation Strategy & Options Mould caused by ineffective ventilation and poorly insulated loft space. water vapour produced in a short time scale in kitchens and bathrooms without the additional use of mechanical When installing a Passyfier Vent, you will need to create an opening in your external wall to accommodate the vent. The size of the opening will depend on the size of the vent you are installing.

Well, the answer lies in a thinking person´s vent. It combines a through-the-wall, “warm” telescopic 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.The moisture vapour pressure within a dwelling is always higher than the outside pressure therefore there will always be an escape of moisture vapour by the diffusion process through the Passyfier Vent. Input ventilation was found to be effective in reducing relative humidity levels by around 10%RH in the test house, even when internal doors were closed. Vapour pressures reduced overall by 0.2kPa. The unit was shown to be more effective upstairs than downstairs.

Use the compatible wind blast cowl with every vent in exposed or coastal locations. Use in conjunction with mechanical extraction in kitchens and bathrooms. Customizable Appearance: The external cowls of Passyfier Vents come in a range of colors, allowing them to match your home's exterior appearance. Use the compatible wind blast cowl, with every vent in exposed or coastal locations. Use in conjunction with mechanical extraction in kitchens and bathrooms. Versatility: Passyfier vents come in various sizes, making them suitable for installation in habitable rooms such as bedrooms and living rooms. Use the Passyfier Sleeved Vent Kit wherever practical to maximise the transmission of water vapour.In my experience, mechanical extraction to the loft space would have little effect or benefit. You should focus on the following: escapes by diffusion through Passyfier Vents, which have been tested by ADAS for airflow rate versus applied

Increase ventilation where practical, IE when cooking close the kitchen door and open the window, when showering or bathing do the same. Passyfier 140 Core Vent: With a water vapor transmission capacity of up to 1.4 liters per 24 hours, this vent requires a 162mm diameter core and is suitable for rooms with a floor area not exceeding 10m². 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 Perma-vent passive air vent is environmentally friendly and requires no power, saving you money on your energy bills. It also has no moving parts and doesn’t require any maintenance. Passive Ventilation Products from Permagard Silent Operation: Passyfier dehumidifier vents are non-mechanical, meaning they have no moving parts, making them completely silent and unobtrusive.and humidity at 100%, while the inside temperature is at a comfortable 20°C. Keeping the inside relative humidity

Insert the Passyfier Vent tube into the prepared opening, connect the internal plastic grille and the external cowl to the Passyfier vent tube, and fix to the wall surface following the manufacturer's instructions. Ensure that the vent is level and held firm in the opening.Important Note: Passyfier vents must not be used for providing ventilation to gas, oil, or solid fuel appliances. However, it will be necessary to install two Passyfier Core-100 Vents to achieve almost the same water vapour transmission as one Passyfier Sleeved-230 Vent. Use the Passyfier Sleeved Vent Kit where ever practical to maximise the transmission of water vapour. For the Passyfier 100 and Passyfier 140, you can create the opening using a Dry Core Bit (Use a 132mm size for Passyfier 100 and 162mm size for a Passyfier 140). This is a special drill bit that can be used to cut a clean, circular hole in the wall. Begin by marking the centre of the desired location for the vent on the external wall using a pencil or marker. Then, using the dry core, drill through the wall from the outside until you reach the inside surface. The diffusion process is slow compared with mechanical ventilation and would not cope with the copious amount of water vapour produced in a short time scale without the combined use of mechanical ventilation in kitchens and bathrooms.