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Register now for the AIVC International workshop on ventilation and airtightness. 19-20 March 2018, Wellington, New Zealand…more

39th AIVC – 7th TightVent – 5th venticool joint Conference in Juan-les-Pins, France. The 7th TightVent conference will be held on 18 and 19 September 2018 in Juan-les-Pins, France together with the 39th AIVC conference…more

Energy Efficiency and Indoor Climate in Buildings is out. This monthly online newspaper contains relevant information on TightVent Europe, AIVC, venticool & IEA EBC annex 62 and EU relevant information (from the BUILD UP platform). . Subscribe to get informed on a regular basis on the platforms’activities more

Favorite New App “ASHRAE HVAC Duct Sizer”

The “ASHRAE HVAC Duct Sizer” application designed by Carmel Software Corporation for ASHRAE, allows the user to quickly size one HVAC duct run or a range of duct sizes using the constant friction method. In the “Size by Airflow” mode, … Continue reading

Favorite Impact of Energy Policies on Building and Ductwork Airtightness

Screenshot 2017-10-02 11.33.10A new Ventilation Information Paper (VIP), has been released by the Air Infiltration and Ventilation Centre (AIVC), which analyses both the policy instruments used (regulatory requirements and incentives, specific programme requirements, quality frameworks for testers and builders) and the changes observed in practice in terms of building and ductwork airtightness over the past 5 years, using as reference mostly publications from AIVC and TightVent Europe led events.

The review begins with the motivations for improving building airtightness, including energy use impacts, building durability, indoor air quality (IAQ) impacts, and safety of occupants. Mandatory building airtightness testing has come gradually into force in the United Kingdom, France, Ireland and Denmark. It is also considered in many other European countries, either as regulatory or programme requirements, mostly because of the increasing weight of building leakage energy impact on the overall energy performance of low-energy buildings. Because of legal and financial issues due to wrong tests, several countries have developed qualification schemes for building airtightness testers and also airtightness databases that prove to be very useful for monitoring policies and building stock.

As for ductwork airtightness, this issue is rarely addressed despite significant energy savings and/or IAQ impacts associated. The feedback as well as energy and IAQ analyses of the recently introduced Effinergie requirements in France would be very helpful to make progress on this issue.

The paper is available at: http://aivc.org/resource/vip-37-impact-energy-policies-building-and-ductwork-airtightness