What is Positive Input Ventilation? | Envirovent

Positive Input Ventilation

Positive Input Ventilation Unit in Loft

Most people don’t even give it a second thought, but the air that we breathe inside our homes is important to our health and provides a comfortable living environment.

It may come as a bit of a revelation but through our daily routines of washing, bathing, cooking etc, we create a lot of moisture – in fact, the average family can create a whopping 112 pints of the stuff per week. And, as we spruce up our homes by furnishing and cleaning them we also introduce a concoction of other contaminants into the air inside the home. These include chemicals from cleaning products and formaldehyde from carpets and furniture.

What’s more, as we strive to save money and energy by improving our homes such as installing double glazing, cavity wall and loft insulation we prevent ‘natural ventilation’ which means that the moisture we produce along with the stale, polluted air has no means of escape. This causes condensation on windows, which left untreated will lead to black mould and musty odours.

What is Positive Input Ventilation?

Positive Input Ventilation (PIV) is the name given to a ventilation system or unit which transforms a stagnant and stale atmosphere into a fresh, healthy and condensation free envirovent by supplying a constant supply of fresh filtered air to homes with a loft space.

We understand that every home has its unique requirements. The can be dependent upon the material fabric of the building, the number of people living in the property and their lifestyle.

EnviroVent's range of Mr Venty® units has been designed for every make, size and shape of a house, flat, bungalow or apartment.

To help you decide on which unit is best suited to your home, simply follow our Mr Venty® Product Selector for the correct unit and options.

How does Positive Input Ventilation work?

The Mr Venty® range of condensation control units work by delivering clean fresh, filtered air into the home from either the landing in a house or a central hallway in a flat. The unit gently ventilates the property using a technique called Positive Input Ventilation (PIV).

This method dilutes high levels of humidity so that condensation and mould cannot form, whilst also diluting harmful household contaminants, thus creating a healthy all year round living environment.

Furthermore, by reducing the levels of humidity inside the home the household dust mite population can no longer thrive – an added benefit for asthma and allergy sufferers who could see a significant improvement to their symptoms.

Features and benefits of Positive Input Ventilation

  • Reduces condensation dampness
  • Quiet operation
  • Eliminates mould
  • Stops streaming windows
  • Removes musty odours
  • Can reduce heating costs
  • Benefits asthma sufferers
  • BBA approved
  • Superior long-life filters
  • Reduces radon levels
  • Low running costs
  • 5-year guarantee

See our complete range of whole house ventilation systems.

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