Cure Severe Condensation with Positive Input Ventilation
The Positive Input Ventilation (PIV) principle provides whole home ventilation and an effective method of curing condensation problems in the home.
This form of ventilation is becoming increasingly recognised as the “best value” approach to ventilating a home and preventing severe condensation and resultant mould.
Essentially, the concept is to introduce air to the home at a continuous low rate, encouraging movement of air from inside to outside.
A single unit situated in the loft space will normally be sufficient to continuously dilute, displace and replace the old contaminated air in the home with drier, tempered (by utilising otherwise unused heat in the loft space) and filtered air. The result is a significant contribution towards providing a healthy, condensation dampness free, energy efficient home.
How PIV whole home ventilation works for condensation control
Unlike extract systems which draw in unheated, unfiltered air, a positive input ventilation (PIV) unit gently supplies tempered, filtered air into the home using otherwise unused heat within the roof. The benefits of this are threefold; Firstly it means that a significant proportion of external pollutants are prevented from entering the home, secondly, the use of otherwise unused heat in the roof results in the ventilation unit providing a significant net energy gain to the home. Thirdly there is no better way to ventilate a home than from the inside out via a single centrally located supply air diffuser. A properly designed and installed unit will ensure that old, contaminated vapour laden air in your home is continuously diluted, displace and replaced with good quality air.
The result is improved air quality and an environment in which condensation dampness cannot exist.
The installation of a low energy positive input ventilation unit will ensure that the air in your home is completely replaced 20 times a day, which is the recommended rate to maintain good air quality.
PIV redistributes heat from ceiling level
Input air is directed across the ceiling (usually in your hallway). This uses a scientific principle called the Coanda effect, which has the impact of mixing with the wasted warmer air that has risen above head height in your home. It therefore increases the efficiency of your heating system.
Severe condensation and black mould is caused by poor ventilation and heating. Water forms on windows and walls and if left will result in black mould or mildew growing on walls and furniture. Condensation is usually associated with poor air quality and a stale or mouldy odours. Biocraft offers and range of products and services to prevent condensation, black mould and the problems associated with poor indoor air quality.
For a condensation survey or to discuss your condensation or mould problems please call 0800 781 8358.
Health Benefits of WHV
It is estimated that some 80% of asthmatics are allergic to dust mites (or more specifically to the faeces of these creatures).
Dust mites are too small for us to see but they can be present in huge quantities in
soft furnishings and more worryingly, in our mattresses and pillows. The faeces can also float in the air when you shake your bedding or when you walk over the carpet where they have settled. It is the inhalation of this allergen that can trigger an asthma attack.
Dust mites breed best in a humid environment. Just the sort of environment you will have if your home is poorly ventilated. Ventilating a home can create a hostile environment for the dust mite; mite populations can fall and faeces production reduced.
Clinical research has proven that whole home ventilation can play a significant part in controlling dust mite allergens. Nuaire’s own experience through hundreds of reports from satisfied customers, who claim significant relief from their condition, backs up this research.
NB. Nuaire do not claim that the use of their products will cure asthma nor eliminate asthma
Drimaster 2000 for Condensation Control
The Drimaster 2000 PIV is British Board of Agrement (BBA) certified for installation into new homes, the Drimaster complies with Building Regulations ventilation requirements. The Drimaster contributes towards ‘conservation of fuel and power as it has an extremely low power consumption.
The Drimaster is a low cost, low energy whole home ventilation unit that will make use of heat in a ‘cold roof’.
Features of the Drimaster 2000 PIV :
- Drimaster isBBA certified
- Intelligent 4 way heat recovery
- 5-Year filter life
- Net Energy gain with the Drimaster 2000
- The drimaster is Whisper quiet
- 6 speeds to choose from
- Easy non-disruptive drimaster installation
- 5 year warranty.

Biocraft supplies and installs a range of ventilation and condensation control units throughout Berkshire, Hampshire, Surry and Oxfordshire.
For a condensation survey or to discuss your condensation & mould problems please call 0118 945 1144 or email [email protected]