
Rafal Kaczynski
Hi Paula you can not estimate how much you are going to use fuel for heating your house as weather conditions change so often in UK. yes in a drafty bad insulated house your fuel consumption can increase up to 40% compare to well insulated draft free dwelling. If heating system is fitted with a room thermostat temperature in a house is controlled by thermostat and temperature set up by user. In a house with a draft house will cool down a much quicker than a house well insulated so it's mean if temperature drop boiler will start fireing up to increase temp in a house. By this meening fuel consumption will increase and than you will know how much parafine had been use. So it's better to insulate a house and save some money on fuel ( cost of insulation will clear after 1 st heating season ) I hope this will help you with yiur quarry.