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Why is Positive Input Ventilation perfect for new build?

  • Part F Compliant
  • Reduced build costs
  • Excellent results in SAP
  • BBA Approved
  • No trickle vents required
  • High energy savings, up to 500KWh per heating season*
  • Aids air tightness
  • Promotes health benefits
  • Easy installation, no core drilling required
  • Whole house ventilation solution
  • 5 year maintenance free warranty
  • UK manufactured, low carbon footprint

In order to address climate change, the UK has reacted strongly to enforce stringent legislation to achieve an 80% reduction in greenhouse emissions by 2050. As 25% of carbon emissions come from homes and a further 17% from non-domestic buildings, every household and business, both public and private must increase their energy efficiency levels.

To improve this, homes are being designed, built and improved to increase air tightness. Double glazed windows and doors, thicker loft and cavity wall insulation and enhanced U-values are sealing up our properties.

Consequently, this has led to the increase in performance criteria for energy efficient ventilation. The correct ventilation is vital to protect the fabric of the property, the health of the occupants and provide an all year round ideal indoor environment.

There are various ventilation methods, which meet the building regulations and can be included in SAP calculations. A top performing method within the Standard Assessment Procedure calculations is Positive Input Ventilation from the loft.



Positive Input Ventilation

Positive Input Ventilation (PIV) is a whole house ventilation system which delivers fresh filtered air into a property at a continuous rate.

Recognised as System 5 within the Building Regulations, Positive Input Ventilation is an accepted method providing it is BBA accredited. This involves stringent testing which is submitted to the Building Control body.

Once installed, Positive Input Ventilation can bring a wealth of benefits to both the home and resident.





Ideal for newbuild

The EnviroVent Loft Mounted Positive Input Ventilation unit is easy to install, without the requirement for core drilling or extensive duct work, reducing build cost significantly. As a whole house ventilation solution, trickle vents are also not required.

Most importantly, PIV favours strongly in the SAP calculations, Download the brochure here for a look at the calculations table.



Health Benefits

With improved building features in our homes, such as cavity wall insulation, double glazing and draught proofing ‘natural ventilation’ is prohibited. Stale air is trapped causing streaming windows, which ultimately leads to musty smells, dampness and mould growth.

These mould spores are known allergens and become airborne at the slightest disturbance.
The microscopic spores are then inhaled and can trigger respiratory problems such as asthma, dust allergies and hayfever.
The EnviroVent Loft Mounted Unit draws fresh air into the dwelling from outside and filters it before being delivered into the property. Moisture-laden air is diluted, displaced and replaced with clean, tempered and filtered air. This eliminates or reduces surface condensation, which causes mould growth, providing a significant improvement in the health of asthma sufferers and general indoor air quality.

Our range of positive input ventilation products...

Loft Mounted Unit
Loft Mounted Unit

Positive Input Ventilation for properties with a loft.

Wall Mounted Unit
Wall Mounted Unit

Positive Input Ventilation for flats, apartments and properties without a loft.

MIV® Air Source
MIV® Air Source

Positive Input Ventilation for properties with available loft space and accute problems in multiple rooms. Has the facility to draw cooler air from outside in the summer.

Book a CPD
Book a CPD