How much does it cost to install an exposed radiator in Nanjing? Here, let's take a 100 square meter apartment as an example. Generally, an apartment of 100 square meter needs five sets of radiators, three sets of bedrooms and two sets of restaurants. Surface-mounted heating consists of three parts, one of which is pipeline system. The installation cost of each group of piping system is 900 yuan, and this 900 yuan includes the total cost of auxiliary materials such as pipes, fittings, dust-free openings, valve installation and tanks. 900 yuan times 5 equals 4500 yuan. The second part is radiator. Let's take the longest steel radiator in Nanjing market as an example. The price of five groups of radiators is around 3500 yuan. The third part is the cost of wall-hung boiler. The brands and models of wall-hung boilers are different, and the prices vary greatly. The price of a single wall-hung boiler ranges from 5000 yuan to 15000 yuan. Let's take the medium-sized wall-hung boiler as an example. These three parts are all added together, and 15500 yuan is the total cost of surface-mounted radiator system, and the final price is subject to the specific brand and model.