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for new and existing buildings. In new buildings, HVAC systems must be designed to guarantee a minimum intake of fresh air q=0.35 l/s,m2, according to the type and use of the space. In non-residential buildings and multi-family houses, the airflow must be periodically monitored (every 2, 3, 6 or 9 years, depending on the building and ventilation type) and cor- rective measures must be taken if the airflow falls below certain limits.

Monitoring the ventilation (Compulsory ventilation check)

Since 1991 Sweden has implemented a compulsory ventilation check (OVK) The ventilation system is checked twice. Firstly when the building is erected, a ventilation check is carried out to find out whether the ventila- tion system fulfils the requirements, secondly, in some buildings, the ven- tilation is checked regularly during the lifetime of the building. The re- peated ventilation check is carried out every second year in schools and offices; every third year in multi-family buildings with exhaust and supply systems; every sixth year in multi-family buildings with exhaust systems and every ninth year in multi-family buildings with natural ventilation.

3 > Future planning

At the present time, Sweden (Boverket) is busy getting everybody on board the energy declaration ship but in the meantime, while we are revising the Building code on the aspect of electrical energy, a new ordinance was launched by the government came into force the 1st of April 2008 with a transition time to 1st of January 2010, where all new electrically heated buildings together with their heating, ventilation and cooling systems must have special emphasis on efficient energy characteristics. The previous requirements only included one or two-family dwellings, with direct elec- tric panel heating which were constructed with special emphasis on energy efficiency. The new requirement is suggested to concern all types of build- ings with electric heating to be energy efficient. The suggested regulations on energy efficient electricity use are to be decided shortly.

4 > Information campaign

Detailed brochures as well as official texts are available on the national websites of Boverket, The Swedish Energy Agency and the Environmental Protection Agency.

More information is to be found on the webpage of the Swedish Energy Agency on their campaign web,

http://www.energimyndigheten.se/sv/Om-oss/Var- verksamhet/Kampanjen-Bli-energismart/

and also on the website of the Environmental Protection Agency:

http://www.naturvardsverket.se/sv/Klimat-i-forandring/Minska- utslappen/Energieffektivisera-i-ditt-hem-bli-energismart/

Since 2007 promotional and information seminars have been organised on a national basis when the regulation came into force.

The campaign slogan, “Energy smart” in the press and on the Internet http://www.blienergismart.se/ includes information about the energy certification system.

EPBD Buildings Platform > P82 Sweden-June2008

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