This paper describes an experimental analysis of the pyrolysis of PVC and mixtures of PVC with wood (Finnish pine) and LDPE (low density polyethene) in nitrogen at 250-400 degreesC. The aim is to optimise the temperature range for producing low-chlorine or chlorine-free fuel in a dehydrochlorination reactor without pyrolysing any of the other combustible fractions. Results are presented for various process temperatures for PVC, PVC/wood and PVC/LDPE mixtures. It was found that the PVC tested is dehydrochlorinated at approximately 350 degreesC, and that secondary pyrolysis is suppressed when LDPE is present.