Air Tightness Testing

Air Tightness Testing

Air Tightness Testing

  • Air Tightness Testing

    An air tightness test or blower door test is used to calculate the uncontrolled air permeability of a dwelling through the building fabric. This is done by placing a large fan at the front door of the house & creating a pressure difference of 50 pascals to calculate the rate of permeability. A house with a low rate of Air permeability will be cheaper to run, and if the rate of air permeability is too high, (over 5 ach/hr) it will fail the air pressure test & then the house will not comply with building regulations. If a house fails, the assessor will be able to identify the problem on site.

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  • Part L Compliance

  • BER Certification

  • Multi-Fan Air Tightness Testing

  • Ventilation Validation


Nationwide Energy Consultants Ltd. is one of Irelands longest established & largest air tightness testing companies.

We are currently a twelve strong team comprising of NSAI certified air tightness testers and SEAI registered BER Assessors covering the whole country. We have been established since 2009 & to date we have carried out work in excess of 25,000 buildings from all corners of Ireland.

Most of our work has been dealing with large contracts from government bodies, engineering practices, renewable energy installers, insulation contractors, estate agents and of course building contractors. We are one of the few building energy consultancy companies in Ireland that can easily deal with large volume BER and air tightness testing projects contracts.

With our experience in dealing with larger BER and air tightness testing projects, it has led us to develop a fast & efficient management system so we can ensure & professional service with a quick turn-around time for our customers.

Feel free to visit or just give us a call

Nationwide Energy Consultants

Post: Ardagh Business Park, Tullyallen, Drogheda, Co. Louth

Phone : 041 213 0301

Mobile : 085 712 2861

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