| The easiest (and very crude) solution is probably to find the amount of gas you use per year in m3, then calculate the amount of kWh heat that yields. 1m3 of gas produces approximately 10.55 kWh of heat, depending on the type/age of your furnace. That is the amount of heat you require over a year. Through the magic of heat pumps, you can find the COP value of any model you plan on purchasing, but in essence the COP value tells you how much heat the pump will produce when using 1 kWh of electricity, for instance a COP value of 3.62 means the heat pump will produce 3.62 kWh of heat for 1 kWh of electricity. So say you have a yearly gas usage of 1600m3, that equals 16880 kWh of heat. Assuming a heat pump with a COP value of 3.62, you can then divide the 16800 by 3.62 to find the amount of electricity you will need with that particular heat pump to produce the same amount of heat, in this case 4663 kWh. As i said, this is a very crude calculation, and it doesn't take into account that the heat pump efficiency drops as temperature drops to around it's lowest efficiency temperature (for mine it's -25C). When that happens, it has a built in backup heating device that will do regular electric heating, meaning 1 kWh per 1 kWh. It also doesn't take into account climate control built into many european heat pumps (and maybe american as well ?). Mine has an outdoor sensor that simply shuts off the heatpump whenever outside temperature goes above a certain point. And then there are all sorts of after market upgrades you can buy, like Tado, who produces a "sensor" for certain heat pump models, which will further reduce consumption based on local weather forecasts, AI and other readings. |