Positive Pressure, or Positive Input Ventilation, is a whole house ventilation strategy for existing homes. It is an ideal solution for homes with consistent indoor air quality, condensation and mould problems and has been successfully used to eliminate these problems in social housing around the UK.
Positive pressure units provide whole house ventilation by continuously introducing fresh air into the dwelling via a mechanical input fan which is usually installed in the loft space in a house or a cupboard in an apartment. With a continuous supply of air into the dwelling it becomes positively pressurised. This in turn forces moisture and airborne particles to leave through natural paths in the dwelling's façade.
Once installed and working, the continuous ventilation leaves the home free of high levels of humidity and creates an environment where condensation and mould can't form.