Positive Input Ventilation (PIV)

ventilation unit

What Is Positive Input Ventilation (PIV)

Positive Input Ventilation (PIV) units have been preventing and curing condensation dampness related problems in homes for decades. They are also used to control other indoor air pollutants and have proven to be an effective means to control Radon Gas.

The units gently ventilate homes from a central position and transform musty damp properties into fresh, healthy condensation and mould free environment. Positive ventilation units also known as (PIV) can be installed in both homes and apartments.


How Does Positive Input Ventilation Work?

External air is drawn in from atmosphere or from the loft area by the Positive Input Ventilation unit. The air passes through filters and then the air is slightly heated. The tempered filterd air is then supplied centrally to the home via the units outlet duct and ceiling diffuser.


What Does Positive Input Ventilation Do?

Positive Input Ventilation helps with:

Stops surface condensation on walls

Eradicates mould problems

Benefits Asthma sufferers

Stops streaming windows

Reduces Radon Gas levels

Reduces dust mites

Eradicates damp musty smells

positive input ventilation

What Are The Guarantees It Will Work?

Positive Input Ventilation has been on the market for 25 yrs. We have sourced the best PIV systems. Our team have over 20 years combined experience in PIV installation.  Our positive input ventilation systems come with a 5 year parts & labour guarantee. We are that confident with our products and service that if you opt for a whole house ventilation system we offer you a 12 month money back guarantee against condensation and mould returning.

Contact our team today for a FREE no obligation quote


Positive Input Ventilation For Apartments And Flats

Wall unit flat diagram - dampair

Positive Input Ventilation Wall Unit

piv wall unit

Positive Input Ventilation For Houses

piv whole house ventilation

Positive Input Ventilation Loft Unit

positive input ventilation loft unit

Benefits & Features

Dampair Positive Input Ventilation units have been designed to be installed in every size, shape of house, bungalow and apartment.

Below are some of the benefits and features:

  • No more streaming windows
  • No more condensation on walls and ceilings
  • Quiet operation
  • Quick installation by DAMPAIR
  • Minimal disruption
  • No ducting runs through the property
  • Benefits asthma sufferers
  • Reduces heating costs
  • Reduces Radon Gas levels
  • Integral built in heater
  • Minimum 5 year guarantees (parts & labour)
  • Long life filters
  • Eliminate mould

Mould spores and infestation. After 4 weeks of installation

mould spores before and after picture

Our Service To You

At Dampair we offer a full supply and install of all ventilation products. All our Surveyors are NICEIC accredited in Installation & Commissioning of Domestic Ventilation Appliances.

Our average installation time is less than 3-4 hours with minimum disruption.


Book A Free Quick Quote

Arranging your FREE Home Survey is simple.  Complete our FREE Home Survey form, then click the ‘submit’ button and your local damp & ventilation specialist will contact you to discuss your damp and/or condensation problems and arrange a convenient time to visit your property to carry out your FREE Home Survey.


    Which service do you require?
    General DampRising DampVentilationMould ProblemsPlastering & RenderingCellar ConversionCondensation Issues+ Not Sure