Question: how much does it cost to run an electric patio heater?
Answer: If you just need a rough idea on how much it costs to run your patio heater — A 2kW electric heater on full power will cost about 30pence an hour (based on an average cost of 14.7p per kWh) while a 15kW gas patio heater costs about £3.00 an hour (based on a 13kg tank refill costing £33).