Table 1

Costs associated with the installation of thermostatic mixer valves (TMVs)

ItemUnit cost (£)Source of informationNotes
Installation; costs incurred by Housing Association
Cost of valve: £45£5.41Housing Association documentsAnnualised capital charges calculated using 3.5% annual discount rate (assuming TMVs need replacing every 10 years)
Cost of installation: simple fit requiring removal of bath panel, based on 2 h of plumber's time, as at 2008 prices£103.02City buildings (Glasgow) Limited Liability PartnershipBath panel only removed to fit TMV
Cost of installation: complex fit requiring removal of bath, based on 4 h of plumber's time, as at 2008 prices£260.28City buildings (Glasgow) Limited Liability PartnershipBath needed to be disconnected to fit TMV
Cost of repair£6.96City buildings (Glasgow) Limited Liability PartnershipAssuming 11% require repair (findings from RCT)
Educational materials; cost incurred by NHS
Cost of hanger£1.21Personal communication
Cost of leaflet£0.10Personal communication