Sandnes municipality has a long-term strategy to convert buildings from electric heating to water heat. Austrått residential and activity center (ABOAS) are connected to district heating center Sandnes municipality has built on Iglemyr. Along with Høiland Junior and Austrått school will ABOAS be converted to water heating during 2016 - 2017. It will be installed complete hydronic heating supplied by district heating. District heating pipes located in due out and will be continued in the building and the technical room. In addition to district heating will be installed solar collectors on the roof to service housing. The heating system includes heating and heating the ventilation air and preheating of domestic water (DHW). In addition to heating should rørentreprenør included construction work and electro in its offer. The procurement implemented as Execution of contract as the builder is responsible for all or most of the engineering work. Designing material is attached and forms the basis for the offer. Contract work is organized in shared contracts. This tender includes Røra Add the accompanying supplementary as electrical and structural work.