Home heating is not hot 17 reasons and solutions

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The indoor heating is hot, but the room temperature does not meet the heating requirements
There are usually several reasons for this situation:
(1) The heating temperature is low. The heating temperature of indoor heating hot water should change with the change of weather. When the outdoor temperature is low, the temperature of water supply should be increased, but sometimes the temperature of heat exchange station or heating boiler outlet water does not increase with the decrease of weather temperature. The temperature is low, so that the room temperature cannot meet the requirements.
(2) The home decoration is serious, and the radiator covers a large area, so that the heat cannot be dissipated. The design load of the indoor heating system refers to the calculation of the heat dissipation exposed in the room. If the interior decoration is serious or covered by curtains and other items, the heat dissipation will be affected, and then the indoor temperature will be affected. Therefore, for home decoration, try to pack the radiator as little as possible.
The geothermal design is unreasonable and there are too few loops
The construction is not standardized, and the lengths of the loops vary. Geothermal construction leads to blockage of individual loops. It is necessary to redesign the construction and install geothermal reasonably. Check step by step to find the blockage point.
The indoor heating part is not hot (1-2 groups are not hot)
There are usually several reasons for this situation:
(1) Gas accumulation. There is gas accumulation in the radiator or the gas accumulation at the end of the pipeline. If there is gas accumulation in the radiator, unscrew the manual air release at the end of the radiator to remove it. If there is gas accumulation at the end of the pipeline, also put the end pipeline Air valve opens to deflate.
(2) Hydraulic imbalance. This kind of situation often occurs in one household one circulation installation system, some radiators are not hot, turn off the heat, and the not hot ones can be heated up, this phenomenon is called the hydraulic imbalance of the indoor circulation system. To deal with this situation, you can adjust the indoor system, turn off the hot heater first, let the unheated heater warm up, and then slowly turn on the hot heater. Note: When turning on the hot radiator, do not turn on all the hot radiators. The degree of opening must be moderate, so that the original hot radiator is also hot, and the non-hot radiator can also be heated up.
(3) Blockage or unreasonable installation, unauthorized modification: If the above methods cannot be solved, then the radiator or pipeline may be blocked or seriously unreasonable in installation, and the unauthorized modification will be given a warning, and it will be changed back to its original location within a time limit. installation form. In the case of blockage or unreasonable installation, please professional maintenance personnel to disassemble and check, to eliminate the blockage or reinstall the properly installed pipeline to eliminate it.
(4) The service life of the system is long, the pipeline is seriously corroded, and the diameter of the pipeline becomes smaller. The original design does not match the current heating requirements, and it is also prone to partial non-heating. In this case, the pipeline can only be redesigned and installed dealt with.
Insufficient number of radiators installed
In order to save costs, some builders do not install radiators in the living rooms and toilets with small areas, resulting in the lack of heat in users' homes. It is recommended that users install radiators (calculated by installing a large 60 radiator in an area of ​​4-6 square meters).
The room is not well sealed
The doors and windows of some users' houses are not tightly sealed, which leads to poor insulation effect of the room, and the phenomenon that the radiator is hot and the room temperature is not high. It is recommended that users take corresponding measures (such as wall insulation, replacement of energy-saving doors and windows, etc.) to strengthen the airtightness of the room.
Heating facilities used for too long
If the user fails to maintain it on time, it will cause internal corrosion, scaling, and serious blockage, which will affect the heat dissipation effect and service life. Therefore, users should ask professionals to flush or replace the heating facilities in time before operation.
Large-scale heat cut-off (stop heat supply for large-scale residential buildings and office buildings at the same time)
First ask the heating station of the unit or community whether there is a power outage or water cut-off, whether the heat source or heating station equipment is faulty, and whether the main heating network is faulty, and then repair and solve it according to the corresponding situation.
Small-scale heating shutdown (individual buildings or individual users)
First ask the neighbors on the left, right, up and down whether the situation is the same, and then find out the reason, determine whether the user's indoor heating facility is faulty or the heating courtyard pipe network is faulty, and then find a professional technician for repair.
Residential household separation valve is not open
The household heating valves of the residents’ homes, or the heating valves of the residents’ homes after the heat metering transformation is not opened, will cause hot water to not enter the home. The household valves located in public corridors or residents' homes should be opened. If the problem cannot be solved, contact professional maintenance personnel, or communicate with the heating company you belong to.
Blockage of heating pipes or floor heating filters in residents' homes
Due to various possible reasons, such as the old and rusted residential pipe network or the construction of the construction unit, there are foreign objects in the branch pipes of the residents' homes, which block the heating pipes or the floor heating filter, and the circulation of the heating water is not smooth, resulting in a reduction in the heating effect of the residents' homes. Heat users who want to unblock or replace their blocked heating pipelines or clean the filter screen can contact professional maintenance personnel.
Neighbor's house installs drain valve and circulation pump
Some heat users install circulation pumps in their homes without permission, or release heating water from the drain valve without permission, which can also cause your home to be unheated. The drain valve will release the hot water in the heating pipeline, and the circulation pump will draw the hot water in the heating pipeline and concentrate it in the circulation pump, resulting in the lack of hot water in the surrounding neighbors. If you find that the neighbors have installed drain valves and circulation pumps, You can communicate with your neighbors, or report the situation to the heating company in time.
Single-family heating The first floor (end) households are not heated
During the operation of the system, some impurities are accumulated at the end of the standpipe and cannot be discharged, resulting in poor water flow and small water supply flow, so the blocked debris can be discharged only by opening the drain valve at the end.
Single Family Heating The Entire Unit Does Not Heat
Due to the air resistance caused by the accumulation of air in the vertical pipe on the roof, the hot water does not circulate, and it can be eliminated by exhausting the air release valve on the top of the building.
Single household heating, single household not heating
First check whether the household valve is open. If it is not the cause of the valve, the pipe at the inlet end may be blocked or the air resistance caused by the unreasonable installation slope. Exhaust the exhaust valve at the end of the user's radiator to make the pipeline circulate smoothly; if it is still not hot, it may be due to the blockage of the pipeline. Disassemble and check the system to eliminate the blocking sundries.
Install and modify the radiator by yourself
The installation of the radiator has strict technical requirements and must be installed under the window, so that the rising hot airflow can block and directly heat the cold airflow infiltrating from the window seam, making the air flowing through the room warmer and more comfortable. The user installs or changes the radiator by himself, because the installation is not standardized, the location is unreasonable, and there are many turns, causing the heating air to be blocked and the water flow resistance is too large. All heaters do not heat. After the heating is over, professional and technical personnel must be found for transformation.
Convert the heating vent valve into a faucet
The hot water in the pipe network contains chemicals for maintaining the heat pipes (corroding to the human body). Using the hot water in the heat pipe network for bathing and washing clothes not only affects the pressure on the heat supply network, but also affects people's health. In order to ensure the pressure of the heating network and personal health, users are requested not to convert the heating bag release valve into a faucet.
The poor quality of the radiator affects the cooling effect
Early central heating users installed old-fashioned steel strings in their homes, and some users bought radiators for aesthetics, ignoring the practicality of radiators. Due to uneven heating, poor thermal conductivity, and easy blockage of these radiators, the supply The thermal effect is very bad. It is recommended to find a professional technician to replace the radiator with good thermal conductivity.