Objectives – Profile the market for pressure and temperature valve usage and replacement across the unvented water cylinder sector.

Methodology – undertook desk and telephone research with key suppliers across the industry, analyse the changes in the unvented cylinder sector, the growth of combi boilers, the displacement of cylinder use in households, the changing safety requirements and legislation for unvented cylinders in the UK. Profile the establishment of unvented cylinders, the scale of the P&T valve replacement market, the scale of the new installations sector.

Outcome – The research identified some substantial threats to the growth of the P&T valve market as the underlying cylinder market is under significant threat from the growth of combi boilers and other heating solutions.