This paper focuses on factors associated with feeling too hot / too cold in English homes and compares internal temperatures for homes where occupants report either and those where not. The data analysed for this paper are part of the Energy Follow-Up Survey (EFUS), commissioned by the Department of Energy and Climate Change (2013). Across the sample (N = 2616), 6.7% of households reported that during cold winter weather, they cannot keep comfortably warm in the living room. 9.2% reported that during summer, they have difficulties to keep the living room and 11.3% to keep the bedroom cool. In winter occupants in homes with uninsulated cavity walls and with less double glazing are more likely to indicate that they cannot keep comfortably warm. In summer, households with presence of a sick / disabled person were more likely to report that they cannot keep living rooms cool. Energy consumption and internal temperatures did not differ between those reporting discomfort and those who did not. One important finding is the high degree of variability in internal temperatures. This variation of temperatures that householders apparently experience as comfortable is reassuring in that acceptable temperatures are not limited to a narrow range.