1. Pipe Connection Methods: There are primarily three types: a single pipe in series, a single pipe in series with a jumper pipe, and a double pipe in parallel. 1. The single pipe in series method is relatively simple. Its advantage is the savings in piping materials; the disadvantage is that it cannot independently adjust the temperature in each room, and due to the high system resistance, the boiler's outlet temperature needs to be higher. 2. The single pipe in series with a jumper pipe offers the advantage of independent temperature adjustment in each room; however, the disadvantage is that system resistance remains significant, and the number of radiators needs to be increased, also raising the user's installation costs. 3. The double pipe in parallel connection method is more complex but offers the advantage of independent control of each radiator's temperature, as well as ease of system adjustment and maintenance; the disadvantage is that, being double pipes in parallel, there is an excessive amount of piping within the room, which is aesthetically unpleasing.

Secondly, the connection methods for the dark pipes mainly include two types: diffused connection and dual-pipe parallel connection. 1. The diffused connection uses distributors to connect to each group of radiators, with each group of radiators having an independent pipe. There are no joints underground, usually employing cross-linked polyethylene pipes or aluminum-plastic composite pipes. The disadvantage is that the pipe grooves are too wide, and the material consumption is high, making it unsuitable for all situations. 2. The dual-pipe parallel connection has the advantage of all pipes being buried underground, making the layout of indoor pipes simple, and controlling each radiator convenient. The heating system looks very neat after installation. The disadvantage is that the pipe connection process needs to be precise to ensure no leaks at the joints, and trenches need to be dug in the ground, making the construction relatively complex.Therefore, for those who prefer to avoid numerous issues during the heating process, I still recommend opting for the clear pipe connection method.