offering ventilation validation offering ventilation validation

Leading energy assessment experts are now offering ventilation validation services under Part F of the building regulations after two of the company’s employees were added to the NSAI list of registered ventilation validators.

Daniel Fennell and David Coyle of were added to the list in October 2020 after completing relevant training at the Waterford Wexford Education & Training Board. Both have educational backgrounds in energy engineering.

Fennell has experience in domestic and commercial BER assessment and airtightness testing, while specialising in technical assessments for heat pump grants. Coyle currently works principally on Part L compliance for new build developments. provides a range of independent energy and acoustic consultancy and testing services. Fennell told Passive House Plus that the company works on residential developments from design stage, undertaking Part L and F compliance, airtightness and acoustic testing and BER assessment, and that ventilation validation will compliment this existing range of services.

“We see ventilation as really important,” he said. “It is something that has really been overlooked in housing so far.”

Fennell said that the company strongly encourages the use of mechanical ventilation in new build housing, particularly as natural ventilation is not advised on dwellings achieving airtightness of better than 3 m3/m2/yr. He welcomed the introduction of ventilation validation as an important tool in ensuring that ventilation systems perform as designed and deliver good indoor air quality for building occupants.

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Last modified on Friday, 08 January 2021 14:43