The Government’s Green Homes Grant aims to improve the energy efficiency of homes. The Grant allows homeowners or residential landlords to apply for a voucher of up to £5,000 that covers up to two-thirds of the cost to installing energy efficient improvements in the home.

Improvements could include insulating a home to reduce energy use, such as insulation, double glazing and draught proofing or installing low-carbon heating to lower the amount of carbon dioxide a home produces. However, installers and households must consider ventilation too, which is also covered by a Green Homes Grant voucher and is vital to the success of a project.

Why is Ventilation Important?

If insulation, double glazing or draught proofing is added to a home, installers and homeowners must not forget to improve ventilation otherwise homes can suffer from indoor air pollution, condensation and mould. Improving a home’s energy efficiency by making it more air tight reduces the amount of heat escaping and so saves energy, but is also limits the amount of air that naturally passes through gaps in a building. Many homes rely on this ‘natural infiltration’ to provide fresh air and to remove air pollutants and moisture in indoor air, which can be harmful to health.

Considering ventilation under the Green Homes Grant is also a legal requirement for installers. Installers working under the scheme must be Trustmark registered and meet Publicly Available Specification Standards (PAS 2030) to install energy efficiency measures. In line with Building Regulations, installers therefore need to comply with the legal requirement that a home’s indoor air quality must not be made worse by adding insulation, double glazing or draught proofing measures under the Green Homes Grant scheme.

Fortunately repairing and improving controlled ventilation is covered by the Green Homes Grant voucher under reasonable enabling work to support the retrofit. A cost-effective route to compliance within the Green Homes Grant scheme is to install intermittent extract fans of the right capacity in ‘wet’ rooms and to ensure that fresh air enters the building through background ventilators without causing drafts or discomfort.

Green Homes Compliance Scheme

Ventilation manufacturers have worked with their trade association BEAMA to create the Green Homes Compliance Scheme, aimed at installers the scheme provides guidance on how to ensure adequate ventilation, when a building’s air tightness is improved. The Green Homes Compliance Scheme is designed to help installers easily identify products through its Green Homes Compliance badge for accredited products. The badge shows that fans will meet Building Regulations requirements and deliver effective ventilation.


By fitting a Green Homes Compliance Accredited fan listed below will help ensure installers overcome potential ventilation problems that could happen due to increasing the airtightness of the dwelling.


Silent Fan

Bathroom/Ensuite Compliant


PureAir Sense

Bathroom/Ensuite Compliant

Lo-Carbon Svara

Bathroom/Ensuite Compliant


Silhouette 150

Utility Room Compliant




Utility Room Compliant


Centrif Duo Plus

Kitchen/Utility Compliant

ACM100-200 & ACM250-315

Kitchen Compliant