Since the landlord used cement, it should be the geothermal energy of the installed cable or water pipe. One of the characteristics of these two kinds of geothermal energy is that heat is stored by cement, water pipes have valves and cables have switches. Under normal circumstances, the poured cement is heated two hours in advance and remotely controlled, and it is warm when you get home. The unit improves the heat dissipation effect, and the normal filling sum product should be 5 cm-10 cm, integral.

If the landlord adds 7 cm, there will be two situations: 1. If you live on the first floor, your geothermal energy will be closer to the ground and thinner, which will accelerate the constant temperature of geothermal energy, overload the insulation materials below it and shorten the life of geothermal energy. The loss of heat will slow down the temperature of your home, but the heat storage time will be prolonged, usually 6 hours, and it will be constant temperature for 6 hours after it is turned off, while yours.

2. If you live on a floor other than the first floor, the life of geothermal energy should have little impact, but you have warmed your neighbors, especially downstairs, and the stored heat has not changed much. For reference only.