Kvalitetsmärkningens betydelse för upplevelsen av innemiljön i småhus

Sammanfattning: The purpose of this licentiate thesis is to investigate the following hypothesis in a case study: “Occupants of buildings with a quality labeled indoor environment experience a better indoor environment than occupants of buildings with normal planning and construction.” The aim of the case study is to compare the outcome of using a quality system for indoor environment with a normal quality system. The considered systems are evaluated against base and application requirements that are formulated in this essay. P-marked houses fulfilled best the requirements. The resident’s perception of the indoor environment is measured in a questionnaire survey. The case study includes 610 single-family houses that were built between the years 1999 and 2000. The result of the case study is that residents in quality labeled detached houses (P-marked) with a slab on the ground foundation, consisted of more than one storey, floor heating on the ground and radiator heating on the upper storey experienced significantly fewer problems with cold floors and drafts than residents in the same non quality labeled single family houses. The house’s heating and ventilation systems are not considered important to the house buyer at the time of purchase, despite the fact that these systems are related to the residents perception of the thermal comfort. The purchasers of the quality labeled houses value the company’s level of high-quality workmanship significantly more and the system of P-marked houses can therefore be used as customer guidance and to gain a competitive advantage.