Why can't the heating stove installed at home reach the temperature of collective heating?

Why can't the self-installed heating stove reach the temperature of collective heating? Because the sales of heating stoves are small, business is not good now. Many dealers dare not suggest using a bigger stove. Generally speaking, the reference area and actual heating area of national standard boilers should be 1: 2, and that of small boilers with miscellaneous brands should be 1:3, which is convenient. Or burn less coal. Alibaba Harbin HVAC equipment SLJDMYS 1688 electric kang board wholesale. Household heating boiler.