Why and why heating radiators do not heat up and how to fix it

In autumn, the home heating season begins. However, while some citizens are already satisfied with the microclimate of their home, others worry if the heating radiator does not heat up completely and are wondering what to do.

The first task will be to find out the circumstances that influenced the occurrence of such an unpleasant situation.

Additional reasons

Cases when the temperature in the apartment is low are not so rare.
The coolant may simply not reach the last radiator along the route. This may be relevant when the system is incorrectly designed, or the diameter of the pipes does not correspond to the calculated one. Quite often the ratio of water volume to intensity and circulation is selected incorrectly. If you still don’t know what to do if the batteries don’t heat well, then it’s also important to pay attention to whether the pump is doing its job. A change in the heating operating temperature can be caused by a number of internal reasons. Many of them negatively affect the efficiency of the system, increasing energy costs

In such cases, a reasonable question arises: why does the heating not heat up: radiators, batteries, pumps, systems? The first step is to find the causes of the problem.

Many of them negatively affect the efficiency of the system, increasing energy costs. In such cases, a reasonable question arises - why does the heating not heat up: radiators, batteries, pumps, systems? The first step is to find the causes of the problem.

A change in the heating operating temperature can be caused by a number of internal reasons. Many of them negatively affect the efficiency of the system, increasing energy costs. In such cases, a reasonable question arises: why does the heating not heat up: radiators, batteries, pumps, systems? The first step is to find the causes of the problem.

Standard battery temperature

Before wondering what to do when you discover poor heating in an apartment, you need to know what rights consumers have. Heat standards are approved by law and only by checking them can you decide whether there is a discrepancy between them and the services provided.

Only after this should you go and make a complaint about the heating in the apartment or write a complaint about the heating in the apartment (the 2017 sample will be provided to you by the relevant service).

The approved criteria for heat in residential premises are:

• for corner apartments, the optimal temperature is +20;
• in rooms it should be no lower than +18 degrees;
• in the bathroom - +25.

These figures may vary depending on the region.

The norm is considered to be a decrease in temperature in the apartment at night to 3 degrees (during the daytime, a drop of 2 degrees is considered a violation) and if this happens, then a recalculation of the heating in the apartment is required

Whether it’s cold or not in the room doesn’t matter. The consumer is not obliged to pay in full for services that do not comply with approved standards

You can carry out the test yourself using a regular medical thermometer, but for this you need to fulfill 2 conditions:

1. Measurements are taken only on internal walls, but the distance from the external wall, if any, must be at least a meter. The thermometer should be kept one and a half meters from the floor.
2. You need to add 2 degrees to the results obtained.

And only after that think, if there is no heating in the apartment, where to call and who to complain about poor heating in the apartment. There are several examples of complaints about the lack of heating in an apartment, but, as a rule, it is often enough to report the problem to the Housing Office for a commission to come from there and record the fact that the client is right.

The heating in the apartment does not work, where can I complain? Read about it below.

Methods for flushing radiators and new methods for cleaning the internal surface

During operation, the internal surface of the heating system becomes covered with rust, salt deposits, and other impurities. All this complicates the circulation of hot water and significantly reduces the air temperature in the apartment. Regular cleaning of heating radiators removes blockages and restores normal circulation of coolant.

It is possible to clean the heat exchanger, equipped with outlet and inlet taps, even during the period when the central heating is already working, but when the riser is hot, the batteries remain cold. First of all, turn off both taps, then remove the radiator using a suitable wrench and divide it into sections. The next part of the work does not require special skills - each element is washed well under a strong stream of water. If a lot of scale has accumulated inside and the sediment cannot be easily removed, you will have to deal with it using chemicals. After drying, the entire structure is assembled to its original form, and all joints are carefully sealed.

This deposit prevents the heating system from working properly.

Heavy batteries that cannot be removed are washed on site. To do this, remove one plug, and then pour inside, preferably under pressure, hot water to which a chemical solvent has been added, for example, soda ash. The heating element is left in this state for a couple of hours, then the solution is drained and clean water is poured under pressure. It is advisable to do several rinses, and if necessary, you can repeat the chemical treatment. To enhance the effect, you can lightly tap the compartments before pouring water, this will help the plaque move away from the walls.

For heat exchangers that are difficult to turn off and wash, there is professional equipment that allows you to precisely remove deposits in any season, including the heating season. The result is achieved through high pressure, compressed air and shock waves. Such equipment allows you to clean not only radiators, but also pipes.

A powerful device can clean the system at any time of the year.

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Typical errors when connecting radiators and methods for eliminating them

Sometimes after replacing the batteries, a sad picture is observed - the new radiators remain cold, despite the fact that the old elements somehow warmed up. The reason in this case may be an incorrect connection to the riser. If the upper pipe through which water is supplied and the lower pipe through which it drains are connected on one side, the circulation of the coolant may be difficult and some sections in the battery will not be able to warm up sufficiently. This problem often happens in homes where there is insufficient water pressure in the heating system.

This should be the ideal battery connection diagram

To avoid this, experts connect the input and output diagonally (top and bottom on different sides) - this option allows hot liquid to circulate freely throughout all compartments of the radiator. If the system is already connected, then there is no need to resort to drastic measures. To correct the situation, you can use a special extension cord in the form of a cone-shaped tube. It is connected to the fitting of the pipe that supplies hot water to the battery. This measure allows you to shift the entrance and significantly improve circulation.

Pipelines: reasons for low heating

Determining air pockets in batteries using a thermal imager

Failures in the heating mode are typical for a two-pipe heating system. In this case, the supply line that distributes the coolant to the radiators does not heat. Identification of the “problem” area can be done by measuring the temperature on the surface of the pipes or a thermal imager.

Natural circulation

Pipe slope for heating with natural circulation

What could cause such problems? If the heating does not heat well, the slope of the line may not be observed. This only applies to natural circulation systems. According to the standards, the slope of the pipes should be 10 mm per 1 m.p. In addition, the direction is taken into account - from the accelerating riser to the radiators. For the return pipe, the slope must be towards the boiler.

At the first stage, it is necessary to measure this indicator using a building level. If it meets the standard, but the heating radiator does not heat, there is a possibility of air pockets forming. In this case, an integrated approach is recommended, which includes the following steps:

• Measuring the angle of inclination. If necessary, change it to the required value;
• Flushing pipes to remove limescale;
• Filling the system with coolant with open Mayevsky taps on the radiators.

This technique will eliminate the low heat transfer rate of the heating system.

To improve circulation, a circulation pump can be installed in open systems. If it overheats, you need to install an additional one. This is often necessary for branched heating systems.

Forced coolant circulation

Operating principle of the air vent

For a system with forced movement of water in pipes, the formation of air locks can be avoided by using an air vent installed at the top of the system. In part, it performs the functions of an open expansion tank, but it does not reduce the pressure in the pipes to a critical level. Its absence is an indirect cause of poor heating of the radiator.

The specificity of closed heating systems is that it is not necessary to comply with the installation level of the pipes. However, when the critical heating level of the coolant is exceeded, steam is released, which is the main cause of air locks. Since air has a lower density than water, it will concentrate in the upper region of the pipeline sections. If heating radiators in a closed system do not heat well, the reason may be a decrease in the volume of coolant in the pipes due to air resistance.

What needs to be done in this case? First of all, check the functionality of the air vents. If the valve is idle for a long time, it may become covered with limescale, which makes it impossible to open it under air pressure.

In addition to this factor, it is necessary to take into account the excess of hydraulic resistance in the system. This is why the heating battery does not heat if the initial calculation is incorrect. Therefore, before you begin installing a new system or upgrading an old one, you should perform the calculation of the operational and technical parameters:

• Selection of pipes of the appropriate diameter - the larger it is, the lower the hydrodynamic resistance. However, this increases the volume of water;
• The likelihood that a two-pipe heating system will not heat is significantly less than that of a single-pipe one. Therefore, it is preferable to install radiators with parallel connections;
• Heating of the heating circulation pump occurs due to incorrectly selected power. It directly depends on the calculated hydrodynamic parameters.

For what reasons may the radiator not heat up? This may be due to an incorrectly selected radiator model. Each of them has a certain heat transfer rate depending on the thermal operating conditions of the system. These data are indicated in the device passport. If you choose the wrong model, then even with ideal operation of the heating system, the radiator simply will not heat up to the required temperature.

The video shows the main reasons for poor radiator heating for a single-pipe heating system:

Independent solution to the problem of cold batteries

If you decide to act on your own, then you can think about what problem could lead to the low temperature of the radiator. The most common case is air locks. If the house has the latest generation of radiators, they must be equipped with a hole for air removal. It is usually installed at the top of the battery, since air accumulates there.

If you turn the tap clockwise, you will hear a characteristic hissing sound. Once water begins to seep out, the tap can be closed. In order to make sure that the air has completely escaped, even after water has seeped out, you can keep the tap half-open, since air currents can escape with the liquid.

If the radiators in the apartment do not heat well, it is, of course, important to decide what to do. Experts say that it is not worth reducing the volume of water in the radiator for a long time; it will be more effective to open the tap after a while

This will allow the water and air to restart.

Where to complain if the problem is not solved

If the management company has not taken measures to eliminate cold batteries, then all that remains is to write a complaint to higher authorities.

Complaint to Rospotrebnadzor

The Rospotrebnadzor department is designed to deal with problems related to the supply of low-quality services.

The practice of contacting Rospotrebnadzor shows that after a utility consumer contacts this body, the problem will be resolved in a short time.

State Housing Inspectorate

After a tenant is dissatisfied with the work performed and the inaction of the management company, he has the right to appeal to a higher authority - the State Housing Inspectorate.

Specialists will visit the apartments again and repeat the measurements. Then investigations will be carried out with housing and communal services and, as a result, the problem will be eliminated in a short time.

Sample of a collective complaint against the Criminal Code to the Housing Inspectorate.

Local body of the Federal Antimonopoly Service

The Federal Antimonopoly Service (we are talking about monopolistic suppliers of utilities: Vodokanal, etc.) influences the management company.

This service monitors the provision of services. Therefore, there is a high probability that after visiting this body, the process of considering the complaint will be accelerated.

The same applies to repair work to eliminate violations in the apartment.

Read our article about how to write a statement to the prosecutor’s office against the Criminal Code.

Visiting city and municipal authorities

The current head of a city, region or district can influence the consideration of the issue of cold batteries.

He has the power to bring violators to justice. However, the problem lies in the permanent employment of the official.

If the head of a city or district receives a collective appeal from citizens, then the problem will be solved faster.

Sample complaint against the Criminal Code to a local government body.

Prosecutor's office

The prosecutor's office is called upon to solve the problems of disadvantaged consumers. Its representatives will conduct an investigation into the complaint received.

When applying, you will need to provide a copy of the application with which the owner applied to the management company, as well as a heating inspection report, which was previously certified by an engineer.

A drastic measure is replacing heating batteries

Unfortunately, old radiators that have been heating your home for decades can no longer be brought back to life by flushing. If, even after general internal cleaning, the batteries remain cold when the riser heats up, they will have to be mercilessly replaced with new ones. Radiators made of stainless steel or chrome-plated are ideal for the bathroom. When purchasing a painted radiator, you should take into account the quality of paint application - in conditions of high humidity it must be impeccable.

A new radiator will solve the problem of insufficient heating

Aluminum heat exchangers have low operating pressure, so they are not recommended for installation in apartments located above the 8th floor. In addition to this drawback, they have another significant drawback - the inner surface of these products is susceptible to corrosion, so you should not expect long years of service from them.

Radiators with towel hangers are produced especially for bathrooms. They not only perform their main function, but also allow you to neatly hang towels for quick drying. To decorate your bathroom, you can choose unusual radiators, which are now easy to find.

Replacing radiators is a complex and time-consuming process that is best left to professionals. Naturally, major repairs should be planned for the season when the heating in the house is turned off.

Moscow. Hotlines for heating issues. Where to call

What numbers to call for questions?

heating season in Moscow?

If you have any questions about the beginning of the heating season in Moscow, or any problems directly with the heating itself (for example, poor-quality heat supply to the house when the radiators are barely warm), then you can call the numbers below - this is city ​​“hotlines” dedicated specifically to resolving such issues.

For questions about the onset of the heating season, as well as for all other problems with heating, utilities, complaints about poor-quality heating supply to the house, you can call here:

These same organizations also accept all kinds of comments on issues of electricity supply.

If they cannot resolve your issue or communicate with you incorrectly, then you can also call here:

Yes, hotlines for heating issues are open in Moscow. For example, if you live in the Central Administrative District, then

If in the Eastern District, then

Find out more about all the hotline phone numbers by district here.

In addition, there is another line that operates 24 hours a day.

Residents usually have questions, especially at the beginning of the heating season. You can ask them by calling the Hotline:

Do not forget that you are not the only one dialing this number, but a very large number of people, so you can often hear short beeps on the phone. In order not to overload the line with your question, first try to resolve it with your management organization or dispatcher, and only after a refusal or an unsatisfactory answer, dial these numbers.

Of course, if residents and citizens have questions about the new heating season, they can call the hotlines. For example, these are the phone numbers.

» Hot phones » regarding heating, electricity and hot water supply:

» Hot lines » Moscow Housing Inspectorate for heating problems in the districts:

For any questions regarding heating in Moscow, please contact:

The Moscow Housing Inspectorate recommends calling the hotline if you have cold radiators, the house is cold despite the heating being turned on, and for other questions regarding the heating season in Moscow.

As far as I know, the issue of turning on the heating this season is no longer relevant. Residents of the capital have waited for the warmth; their square meters are now heated. To be honest, it's very early in the year. But such conditions are dictated by the weather outside the window.

But questions may arise during the heating season itself, as well as in subsequent seasons.

There are hotline numbers for these purposes.

I don’t know how easy it is to call these numbers and get comprehensive information, but there are numbers where you can call.

There is also a “hotline” in the Moscow Housing Inspectorate, where the phones are available 24 hours a day. Here are their numbers:

The article was written based on materials from the sites: www.energo-konsultant.ru, kvartirgid.ru, zakon.wiki, www.msk.kp.ru, www.bolshoyvopros.ru.

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Need to fix the problem

If the heating season has already begun, and utility services do not want to provide heat to apartments, then you need to try to solve this problem. It also happens that at the height of the heating season the batteries remain barely warm, then consumers of central heating services begin to decide where to turn.

Experienced lawyers recommend starting to call the appropriate authorities. Utility workers must respond to problems that are expressed in completely cold radiators. In this case, the pipes may be hot. Consumer requests must also be responded to in cases where the radiator is only partially warmed up. One heating element may remain cold while all the others may be hot.

Before contacting the appropriate services, you should familiarize yourself with the temperature conditions in heated rooms prescribed in the regulatory documentation.

Scheme of consumer actions if the radiators in his apartment do not heat

If, after the start of the heating season, the radiators in an apartment or house do not heat well, where can I complain? First of all, to a company that provides heat supply to a residential building. Its technical staff are required to inspect the problem area and record temperature readings. Based on the data received, an act is drawn up. If no action is taken to resolve the problem within 3-7 days, the consumer has the right to file a claim. The video will help you understand the nuances of the issue in more detail:

We are all very familiar with the situation when, in our own apartment, with the onset of cold weather, we are forced to take out extra blankets, warm clothes and use electric heaters for heating. The reason for this situation is trivial - the disgusting quality of heating of residential premises. In a number of situations, this state of affairs is temporary, falling during the off-season. However, sometimes the quality of heating in apartment buildings throughout the winter leaves much to be desired. Who is responsible for heating in our apartments? Where to look for the last resort and what to do? We will try to answer these and other related questions.

Let's start with the official documents “technical operation of housing facilities”, section II states that the responsibilities for maintaining communication systems in residential buildings are assigned to the Management Company. Its scope of tasks and responsibility includes ensuring the normal operation of heating systems of residential buildings, sewerage and water supply systems. This standard was approved by Decree of the State Construction Committee of the Russian Federation No. 170 of September 27, 2003. Therefore, if your house is serviced by a management company, all questions regarding the normal operation of the heating should be directed to it.

The organization that owns your home is responsible for maintaining normal temperature conditions in the rooms covered by the centralized heating system. The management company is also responsible for controlling the temperature of the coolant at the outlet (return).

This also includes control over the technical side of the issue. Assessing the condition of utility networks, carrying out scheduled routine maintenance and inspections in order to identify technical non-compliance of common property with established standards - all this and much more is included in the responsibilities of the management company.

Inspection of the central heating system is carried out by a specialist whose responsibilities include eliminating detected malfunctions in the heating operation, as well as preventing cases of excessive heat consumption in a residential property. Such an inspection is carried out, as a rule, once a year. Based on the inspection results, appropriate repair work is carried out and adjustments are made to prepare the residential building for the next heating season.

Evaluating the above, and fixed at the regulatory level, it is clear who is responsible for the condition of the heating networks in a residential building and whose competence includes organizing the normal operation of the heating system directly in the house. Thus, all responsibility for the proper condition of the common property to you and the residents of other apartments in your building rests with the management company or housing office, with which you have a very warm and difficult relationship.

Out of habit, when the heating system does not work, we blame the energy company that supplies heat to residential buildings. Few of us think that the supplier company is responsible for the temperature of the coolant, which must comply with established standards, for normal operating temperatures in the mains. The utility company's responsibility extends to the functionality of the backbone networks to the point where your home is connected. Then the management company or housing office is responsible for the heat in your home.

Options are possible when the temperature of the coolant is not sufficient for normal heating of residential premises, and there are interruptions in turning on the centralized heating within the prescribed time frame. In these cases, responsibility falls entirely on the energy company supplying heat to your apartments.

How to eliminate air locks in radiators

Air lock is the most common cause of cold radiators. The appearance of air is a natural process caused by heating the water, sudden filling of the system, and a violation of the tightness. Fixing this problem is not difficult if the system is equipped with bleed valves. On modern radiators they are located at the top of the product and operate without intervention, periodically bleeding air from the batteries. If automation is not provided, then the valve is opened manually and air is released until water appears.

Modern heating devices are equipped with special valves

Older type heating appliances do not have such taps. In this case, you will have to work a little and remove the plug. Before you start unscrewing, be sure to place the basin on the floor. Under no circumstances should the lid be completely unscrewed; it should only be unscrewed slightly until a barely audible hiss appears. At this point, you need to put the key aside and wait until all the excess air comes out of the system and water begins to ooze out. After this, the plug must be carefully tightened. Just in case, you can leave the basin for a while to make sure that water does not drip.

Rules for filing a complaint

When there is poor heating in an apartment, what should you do? There are temperature standards in residential premises that heat suppliers must adhere to.

If cold batteries are a constant phenomenon, then you should rightfully protect your interests as a consumer. First you should ask your neighbors on the site or entrance. Perhaps the problem is only in the operation of the riser or individual batteries.

In this case, it is enough to call a good, experienced plumber from the management company, who will check for air pockets or other phenomena that interfere with the excellent operation of the heating system. If it’s cold throughout the house, you need to make a complaint according to all the rules:

• The first instance is the Management Company or Housing Office that maintains the house.
• Then comes the Department of Housing and Communal Services at the local municipality or Housing Inspectorate.
• If they do not respond, a statement is filed with Rospotrebnadzor.
• And only after the above points of appeal can you go to the prosecutor’s office and the court. A complaint or claim is an important document that must be drawn up in accordance with all the rules of business papers. The accuracy and reliability of the information is important. The authority to which the application is submitted is indicated. Then you need to provide the applicant’s details, leaving contact information for feedback.
• Then a detailed description of the problem is given. It is necessary to indicate when the heat supply stopped and what measures were taken in this regard. If the paper is submitted, for example, to Rospotrebnadzor, you need to submit correspondence with the Criminal Code and the Department.
• Another important point is the presence of an inspection report that will confirm the lack of heating or low temperature of the air and radiators.
• At the end of the letter, you should express your demands and complaints to eliminate the problem and recalculate heating payments. It is necessary to indicate the intention to go to court if there is no response to this letter.
• The document is signed and the date of its preparation is set.

The boiler does not heat the radiators

Often, a two-pipe heating system does not heat due to the low heat transfer rate of the boiler exchange circuit. This leads to a decrease in temperature and, as a consequence, a loss of efficiency of the entire system. Not every boiler model provides an easy way to dismantle the heat exchanger. If the heating does not heat well due to the appearance of plaque on the internal elements of the boiler, you can perform flushing without this procedure. To do this you will need a pump with a filtration system. The cleaning procedure is as follows:

• Disconnecting the boiler from the general heating system;
• Connection to the inlet and outlet pipes of the pump hoses;
• Filling a special cleaning liquid into the boiler heat exchanger;
• Using a centrifugal pump increases the speed of fluid passing through the boiler.

After this, the radiators should not heat poorly

Particular attention should be paid to the flushing fluid. It should not harm the metal elements of the boiler and system

Therefore, at the end of the procedure, the entire system should be rinsed with distilled water.

To avoid the appearance of scale, before pouring water into the heating system, you need to reduce its hardness level. The use of running water is not recommended as it contains large amounts of calcium and magnesium bicarbonates. They are the main source of limescale deposits not only in the boiler heat exchanger, but also in pipes and radiators.

Blockage in the heating system

The reason for the insufficient heat of the battery may lie in a blockage. The blockage is explained by the fact that after a long period of heating operation, the internal diameter of the pipes could be significantly reduced due to the appearance of rust. As a result, it may turn out that there is no room in the pipe for the circulation of coolant flow. In such cases, it will be necessary to carry out work to clean the battery or completely replace it. To clean or replace the radiator, shut off the coolant supply to the bypass. In this case, the entire system will continue to work. If you can get by with just cleaning, you can use the tips below:

It is important to remember safety, as the coolant can be very hot. Cleaning should only be carried out under high water pressure. Before reinstalling the radiator, you should check the pipe connections; there may also be a blockage at the joint that can be cleaned. It is recommended to clean the radiators all at once.

Radiator does not heat up

Most often, problems with normal heat transfer occur in heating radiators. This is explained by their specific design - the coolant does not move through one pipe, as in a transport line, but is distributed over several.

In what cases does the heating radiator not heat? There are several factors that directly affect the correct operation of the battery.

Air locks in heating

There are several reasons for the appearance - excess temperature, water evaporation, etc.

It is important that the consequence of this is the appearance of places in the line that are not filled with coolant. Most often these are heating radiators

To eliminate them, it is necessary to install a Mayevsky valve - an air valve that releases excess air from the device.

How to determine why a radiator does not heat well? The simplest method is a temperature difference on the surface. At the point where the air lock forms, it will be significantly lower, thereby preventing the normal passage of the coolant. To eliminate it, you must perform the following steps:

• Using a screwdriver or a rotary lever, the Mayevsky tap is opened;
• Add water to the system until the coolant begins to flow out of the tap along with the air;
• Shut off the water supply.

Afterwards, the surface of the radiator should heat evenly. Otherwise, repeat the procedure.

Common heating problems

General scheme of operation of autonomous heating
The principle of operation of any heating system is the effective transfer of thermal energy from the energy carrier (gas, solid fuel, diesel, etc.) to water in pipes. The task of heating devices (radiators, radiators, pipes) is to transfer the resulting heat into the room.

And if the heating radiator does not heat, the reasons for this may lie both in the design itself and in the parameters of the system as a whole. Let's consider the common reasons for a decrease in the efficiency of a heating system:

• Low efficiency of the boiler heat exchanger. The water does not heat up to the required temperature;
• A particular radiator does not heat well. Possible reasons: improper installation, formation of air pockets;
• Changes in the technical characteristics of the system - an increase in hydrodynamic resistance in certain sections of the pipeline, a decrease in the bore diameter of pipes, etc. Most often, the consequence of such phenomena is that the heating circulation pump gets very hot.

In some cases, not one, but several of the listed problems arise. Often the main one is the root cause of the appearance of the following ones. Thus, the formation of an air lock affects the increase in hydrodynamic resistance, and as a result, an increased load on the circulation pump occurs.

Decorative grilles should not be installed on a heating radiator with poor heating or covered with a panel. Thus, the already low efficiency of its work will be artificially reduced.