PIV Units

PIV (Positive Input Ventilation) Units are a sophisticated whole house positive input ventilation and condensation control unit for homes and commercial buildings. The positive input ventilation unit gently circulates air around the building from a central position in the property to transform a stagnant and stale atmosphere into a fresh, healthy and condensation free environment.

The Benefits of PIV Loft Units

Helps Prevent Condensation


When warm, moist air comes into contact with either a surface or air that is colder than it is, the warm air is unable to retain the same amount of moisture as it did and the water is released either into the cold air or onto the colder surface, causing condensation to form thus causing damage to not only your home but also your health.

Stops Mould Growth


Exposure to damp and mouldy environments may cause a variety of health effects, for these people, moulds can cause nasal stuffiness, throat irritation, coughing or wheezing, eye irritation and in some cases skin irritation. People with mould allergies may have more severe reactions. Mould in your home should be treated urgently.

Helps Allergy Sufferers


Managing airborne allergy's for sufferer's of hay fever for example can be very difficult. PIV technology cleans the air in your home to reduce or even completely remove pollen in your home environment. PIV is also very good for asthma sufferers by removing dust and mites naturally present in all homes.

Loft & Wall Mounted PIV Units

Traditionally, PIV units are installed in the loft space of a home. The unit will circulate air around the home from a central position in the property, such as a hallway. 

For flats, cellars and apartments a wall mounted PIV unit can be installed instead. 

Both units work by drawing out air from outside and filtering it before delivering it back in to the property as clean air. 


Advantages to having a PIV unit in your home

Puts a stop to condensation

If you’ve noticed condensation on your windows a PIV unit will greatly reduce this from happening right after installation.


Filters the air

Your air quality is improved thanks to the fresh supply of clean air into your home. There is a filtration system that will remove pollution, dust, pollen and other unwanted things in the house.

Removes unpleasant scents

Damp and musty smells will be removed in days after the installation of the PIV unit. 


Works throughout the whole house

Just one unit will effectively work on the entire house and its numerous bedrooms.


The noise the unit makes is minimal to none at all depending on how high a setting you use


A great majority of the units draw anywhere from 1.5 – 15 watts, so there isn’t lots of energy usage.

Comprehensive Manufacturer's 
5 Year guarantee


Removes Musty Odours Around Your Home 


Improves Air Quality And Benefits Asthma Sufferers​ 


Approved By The British Board of Agrément (BBA)


Superior Long Life Filters Reduce Maintenance Costs

01422 351430

Unit 6 Atlas Business Park,
Halifax, HX1 5DZ, United Kingdom

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