Rinnai’s CPD, ‘Seasonal Performance Factors and Heat Pump Design’, details the evaluation of SPF when measuring a heat pump system’s overall energy efficiency throughout an entire heating season, while further considering variations in temperature and other system factors.
Rinnai’s Seasonal Performance Factors and Heat Pump Design CPD details the potential limitations of manufacturer-issued efficiency measures for heat pumps, namely Coefficient of Performance (CoP) and Seasonal Coefficient of Performance (SCoP). Manufacturers often measure heat pump efficiency using CoP, which is the ratio of useful heat energy produced to the electricity consumed at a specific external air temperature.
A SCoP efficiency rating solely measures the heat pump unit, which may yield a lack of system congruity when considering the entire system. Consequently, relying on this performance measurement alone can affect customer expectations in system performance and carbon reductions.
Rinnai offers an alternative methodology in measuring system efficiency – a Seasonal Performance Factor approach – which evaluates all energy utilising components within a commercial hot water system and measures the performance of the entire system, as opposed to solely the heat pump.
By presenting this CPD to UK customers, contractors, consultants, specifiers and installers, Rinnai aims to provide information that delivers a concise and true account of commercial hot water heating performance using the SPF methodology.
Rinnai UK’s new ‘Rinnai Applied’ division has multiple bursaries available. To qualify, installers must be fully eligible and successfully complete the three CPD sessions before March 2026. The CPDs are on the following subjects:
• Seasonal Performance Factors (SPF) and Heat Pump Design
• Introduction to Water Neutrality
• Retrofitting Heat Pumps into the Leisure Sector through CCA & SPF Analysis. Rinnai will continue to inform the UK market of system operating details that provide an accurate statement of performance, while considering the effects on operational expenditure, economic investment, and environmental impact.
www.rinnai-uk.co.uk