vs. air-source heat pump、heating-season cost of ordinary electric vs. gas heating，see"coal-to-electric"is it really cost-effective。free、no registration required。
seasonal heat demand = area × seasonal heat demand per unit area；air-source heat pump energy consumption = seasonal heat demand ÷ COP，electric heating energy consumption = seasonal heat demand ÷ 1.0；cost = energy consumption × tariff。gas consumption = seasonal heat demand ÷ (natural gas calorific value 10 kWh/m³ × efficiency)，cost = gas consumption × gas price。
air-source heat pump moves heat，COP is usually that of electric heating 2–4 times，the lower the tariff、COP the higher, the more you save。when the electricity-to-gas price ratio is suitable，air-source heat pump often beats gas；but if the electricity price is very high or COP low，it may be worse than gas。results vary with regional parameters，please fill in according to local reality。