Currently, many building managers record complaints from homeowners regarding the indoor climate. The main issue is that some rooms never have the desired temperature. After changing the load, room temperatures vary, particularly at small and medium loads. The design capacity can not be transmitted during the start of the heating system after setting and operation under a week-end or night. Such problems arise when the installation has an incorrect heat flow which prevents proper functioning of regulators. Considering that flow and pressure regulators ensure effective control when flows prevail in the plant project, this paper presents two solutions with differential pressure in heating with radiators. These solutions consist in the use of automatic differential pressure regulators or proportional relief valves.