Sensitivity analysis of heating a typical UK dwelling and implications for retrofit design

Abstract The aim of this research is to quantify the impact heating set point on space energy demand for a typical UK dwelling. Retrofit includes fabric efficiency improvements. Energy performance certificates (EPCs) inform householder savings per measure, but has previously been found inaccurately estimate demand, leading errors in 'typical savings' presented householders. most sensitive inputs have be temperature point, followed by efficiency. BREDEM methodology assumes 21°C nine hours day, rather than ~16°C and ~20°C research. methods used study are local sensitivity analysis domestic model, based dwelling example with calibrated inputs. This done using an open Python BREDEM. patterns modelled pre retrofit; according differing points, following wall loft upgrade full upgrade. assumptions lead predicted ~50-100 kWh/m 2 /yr higher real points. Implications retrofit design EPCs discussed.