Taking the common 60-80 square meter houses in rural areas as an example, various heating comparisons are as follows: safety comparison: clean coal: unsafe. since November 23, more than 260 cases of gas poisoning patients have been admitted to various hospitals. Gas: Unsafe. In 2017, 702 gas explosion accidents occurred in China, causing more than 1100 injuries and 126 deaths. The incidence of residential gas accidents remains high, with a total of 465 incidents. Smart solar electric auxiliary heating system: safe, no combustible and explosive parts, separation of water and electricity to ensure personal and property safety. Environmental protection comparison: clean coal: relatively environmentally friendly, but less heat, not resistant to burning, large amount of use, particulate matter, exhaust gas emission gas: relatively environmentally friendly, still a petrochemical fuel, conversion efficiency is only 70%, 30% energy is wasted, and there is exhaust gas emission. Smart solar electric auxiliary heating system: very environmentally friendly, the conversion efficiency can reach 98%, and there is almost no waste; using solar energy from nature, the energy efficiency ratio is as high as 5. There is no comparison of energy saving from particulate matter, waste gas and waste water discharge: clean coal: the price per ton is 1000 yuan, and each family needs 3 tons of coal, which requires a total of 3000 yuan. Gas: The price per party is 2.7 yuan, 20 square meters of gas are needed every day, and the heating season requires about 6400 smart solar electric auxiliary heating system: about 120KWH of heat is needed every day. Considering the average sunshine time per day is not less than 7 hours, solar energy can provide 40KWH of heat and save energy by 40*0.52=20.8 yuan. With an average of 23 days of full sunshine per month, it saves 478.4 yuan per month and 1913.6 yuan per heating period. The system also has a smart home energy-saving system, which is expected to still save energy 30%, I. e. 30% * 120 = 36KWH. Save 36*0.52 per day = 15.6 yuan, save 468 yuan per month, save 1872 yuan per heating period. Smart solar electric auxiliary heating system can save 3785.6 yuan per heating period