The heating system is a very controversial design, which is often fraught with very unexpected pitfalls. If you have problems with pipes, a leak appears, or incomprehensible sounds occur in the form of crackling, knocking or a muffled roar, this means that it is time to take very seriously the troubleshooting and oversights in the structure of the system.

Not sure why the radiators are clicking, but want to immediately find out the cause and fix this problem? We will help not only to solve the problem, but also to get to the bottom of its origins.

The main causes of noise in the heating system

So, why do heating batteries click, and is it possible to eliminate the cause of this problem on your own? No specialist will give you a definite answer right away. This is due to the fact that the cause of the noise may depend on various aspects, and the master will help to accurately determine the factor that led the heating system to produce annoying and disturbing sounds.

And so, for starters, let's try to figure out the reasons why an unpleasant buzzing, noise or hum can occur in the heating system. Here are the main points to consider:

• Leak formation. During a break or even a small leak in the system, an unpleasant sound can be recorded throughout the riser, similar to a distant hiss. By eliminating the leak, you will get rid of the torment, and protect yourself from more serious breakdowns and their consequences.
• Incorrect pipe connection. When the transition from one pipe diameter to another decreases sharply, a pressure drop occurs in the system, which can also lead to the formation of noise and knocks.
• Damage to the faucet or system valve.

Initially, it may not be clear to you why the radiators are cracking, and what is the root cause of this strange phenomenon, but if you look in more detail, everything becomes more than clear! If you don’t know why radiators are cracking, and you want to find out and eliminate the wildly annoying noise as soon as possible, then get ready for a detailed analysis, the basics of which we will teach you.

How to set the nature of extraneous sounds in the system

First, let's find out the nature of the sound, and try to establish its source. To do this, we ensure silence in the house and carefully examine the system. Where the noise is heard best and the problem should be looked for. If you have found the location of the “deployment” of the noise, but still have not established why the radiators are cracking, try to analyze the nature of the sound and determine what it is most like. This is important to do as soon as possible, because extraneous sounds that constantly break the silence of the apartment can lead to very negative consequences for all family members.

Other possible reasons why heating pipes are buzzing.

Buzzing and gurgling is present due to the ingress of air into the heating system. And there is only one way out here - look for Mayevsky's tap and let the air out, otherwise the noise will not stop, and the heating system will not work to its fullest. The reason why the heating pipes are buzzing can also be debris in the riser or the radiator itself, a torn valve, or thermal expansion.

To say exactly what sound is coming from the system, and what it means, requires practice, which, as we dare to assume, you do not have. For that, the masters involved in repair work have it, and if you need to consult with a specialist, do not hesitate to call him and call him at home.

Remember that the air lock formed in the battery should not cause a sharp crack, which means that the reason is something else. But it never hurts to open the tap and check the airiness again. If we take the very principle of arranging batteries, then it is such that the system expands slightly from heating, thereby providing an opportunity for the formation of a new thermal field. If something prevents the battery from expanding, then the occurrence of noise and extraneous sounds will also be possible. Try to free the pipes from close contact with the wall, and maybe this will solve the problem and understand why the heating pipes are buzzing.

Noisy batteries - unnatural phenomenon, causing significant discomfort to residents of a private house. The volume of crackling, splashing, murmuring is not always evenly distributed throughout the system.

Some rooms of the house do not suffer, while in some rooms it is simply impossible to be present. The problem is aggravated by the use of metal elements when installing radiators - metal conducts vibrations very well, making the hum loud and ubiquitous.

Identification of the cause of noise is a paramount task, since extraneous sounds indicate malfunctions of the vital system during the cold season. Some of the causes left unaddressed will lead to the failure of the heating circuit accident or major property damage.

Why are radiators noisy in a private house?

Batteries in a private house are noisy for different reasons. You can fix the breakdown only after it is known exactly why the radiators are noisy.

Overpressure

Noises from radiators caused by excessive pressure inside the entire installation signal about the danger of a breakthrough.

Technical communications are designed for a certain working pressure, which is controlled by sensors - manometers.

Focusing on the norm indicators set for a particular circuit of heating systems, you can adjust pump pressure, on one's own.

Incorrect installation of the thermal valve

The home master does not see the difference which side to put the battery valves. But with incorrect installation of the thermal valve, hot water valve pressure, causing noise. Such a crane can tap periodically.

The noise of the pump in the boiler room

Previously, it was customary to place injection equipment in a separate building to reduce the volume of the sound it creates. Modern pumps are located in the basement of private houses.

Their work has been improved to such an extent that the most efficient use of the heating circuit is possible with minimal hearing discomfort.

Photo 1. Pumps in a boiler room located in the basement can cause vibration and noise from radiators.

But incorrectly selected for a particular house pump power reflected in the constant noise of radiators and pipes. Metal communications perfectly transmit powerful blower vibration throughout the private home.

Attention! To prevent this effect, you need to adjust (reduce) the power of the pump, and before installing it match its performance with specialists.

Boiler malfunction

Monitoring the correct functioning of the device eliminates the troubles of battery operation, failure. The first sign of a malfunction of the boiler functions is appearance of extraneous sounds.

To eliminate the defect, the modes of turning on and off the heating apparatus are adjusted.

The frequency of mode change occurs once in 20-40 minutes. Good performance indicators 75-80% of the nominal power of the boiler.

A good solution to the problem is the installation of automatic room regulators that independently control the power of the boiler by measuring the temperature on a specific radiator.

Uneven supply pipes

When installing a system of "communicating vessels" in a private house the laws of hydrostatics are strictly observed. All installation work is carried out according to the level - a device that controls the parallelism and perpendicularity of the elements of the heating circuit to the level of the earth's surface. The sloped pipes create unnecessary water level difference, provoking a splash inside them.

Battery displacement when heated

The radiator is attached to the wall on special brackets, which are made of metal. with lower thermal conductivity than the batteries themselves.

This protects the coasters from unnecessary heating, which reduces the temperature of the entire heating system of a private house.

Bracket material undergoes little thermal expansion.

And heating radiators are sensitive to changes in the temperature of the coolant. Material with high thermal conductivity expands significantly when heated. The junctions of such different elements often crack and click.

Reference! To exclude contact of parts, the occurrence of noise and subsequent corrosion of the metal in these places of the battery, elastic gaskets are used. Best fit rubber washers.

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Change in coolant temperature

Failures of the circuit system also occur due to inconsistencies in the power of the heating unit.

The degree of heating in the battery is adjustable, but it is better to carefully select all elements of the heating system in advance.

If the boiler is designed for 2 kilowatts, and the total power of the radiators is 1 kilowatt, then this will periodically lead to malfunctions in the circuit, voltage in the pipes, and noise.

The material from which the batteries and pipes are made is also taken into account. Used to be cast iron, which endured fluctuations in the heating system.

Now, other materials are common that are less resistant to rising temperatures, although they are more attractive in terms of other characteristics.

Radiator clicks and knocks: causes of crackling, knocking and clicking

Specific sounds in the heating system are created when there is foreign particles. Many reject this possibility, since the heating circuit of a private house is looped, it is closed system with a small circulation of the coolant. But the appearance of debris in the batteries, because of which they knock, is a cumulative phenomenon.

The water used in heating does not pass through filters, but is taken from a regular water supply. With constant heating, metal salts settle on the walls of pipes and batteries, scaling.

Breaking away under the pressure of water, the particles move from place to place, they seem to click.

For a private house, it is much easier to eliminate the problem of crackling, knocking and clicking in the battery than for an apartment building. Almost any owner can do it on their own. Through the flow valve coolant drains into the sewer. The heating circuit and adjacent communications are washed with clean water. Then the coolant is replenished again.

In case of malfunction of the valve, it is enough a simple replacement for an obsolete element.

Bubbling water in batteries and methods of elimination

Water in batteries can murmur for various reasons. To determine, you need to know radiator features.

Connection leaks

Air bubbles create a splash and murmur that frightens the owners of the house. The main reason for the appearance is the lack of tightness in threaded connections. Heating circuit sucks in air almost always under these conditions. A good owner knows this feature and controls condition of valves, pipe joints for integrity and tightness.

Photo 2. Leaky threaded connections of the battery create murmuring sounds, so you should always check the joints.

Bleeding air when unpleasant “symptoms” appear is a reliable way to avoid discomfort when operating water heaters in a private house. In the presence of Mayevsky cranes you can quickly bleed air from a single battery. Determine the "culprit" by probing. The radiator in which air has accumulated loses temperature, freezes at the top.

Poorly bled air from the system before starting

Be sure to carefully deflate when commissioning the heating circuit. Heating branches depart from the boiler, on each of which a circulation pump is installed. Required on the front of the pump unscrew the screw. Then the water will begin to merge, the air will be bled.

During the procedure, about ten liters of coolant. So that the automation, reacting to a sharp drop in pressure, does not block the operation of the boiler, they simultaneously feed the system with an additional amount of liquid.

Error in the installation of the heating system

The heating circuit in a private house is a serious communication scheme. It is forbidden to install its elements without following strict rules.

A common phenomenon that can be encountered in multi-apartment or private houses is various kinds of noise coming from the heating system. Like any extra noise in communication systems, buzzing, crackling or knocking in heating pipes have their own reasons, and if they are not eliminated, along with psychological discomfort for residents, this can lead to serious problems in the heating system of a residential building.

Characteristics of noise in heating pipes

Speaking about undesirable noise effects in the pipes of the heating system, we should first mention in a few words the difference between noise and sound. If sound waves are characterized by a certain frequency and amplitude, then noise vibrations are characterized by disorder, lack of uniformity and rhythm. The noise level is measured in decibels, and its normal values ​​​​are up to 30-40 decibels in the apartment and up to 45-55 decibels - on the street. Anything that exceeds this level is a deviation from the norm and causes acoustic and psychological discomfort to a person.

The installation of communication systems in the dwelling is carried out in such a way that the noise coming from them is not felt by the residents and fits within the framework of sanitary standards. This also applies to heating pipes, and therefore the appearance of hum, cod, knocking and other audible noises in them indicates a malfunction in the heating system.

As an exception, it is worth mentioning the noise that occurs in heating communications during the first start-up of the system. Such a knock or crack in the heating pipes is not unusual - it is usually associated with pressure drops in the supply and receiving pipelines when water is first supplied to them. In the future, as all the pipelines of the system are filled with water, the noise in them weakens, and then stops completely.

Noise effects arising from malfunctions in the system can be of a different nature: hum, crackling, clicks, knocks, seething, etc. Their reasons may be associated with errors made during the installation of heating pipes, or occur during operation (read: ""). Noises of different nature have different origins, and therefore identifying the variety of noise plays an important role in establishing its causes.

Causes of buzzing and whistling in the pipes of the heating system

Whistling or hum in heating pipes are quite common, and among the main factors of their occurrence are the following:

• leaks in the heating system;
• the appearance of narrowing in the lumen of pipes that interfere with the normal circulation of water;
• the use in some apartments or premises of a residential building of pipes of a smaller diameter than in the rest of the heating communications.

If the cause of the buzzing pipes is not clear, you should first of all find out if there are leaks in the heating system. To this end, it is necessary to examine all apartments and premises in the house, but if no water leak is found in them, then also the basement, in which nodal plumbing and heating structures are usually located.

Most often, leaks are formed in the fistulas of heating pipeline structures or in valve connections. If such a leak does occur, it is usually not difficult to detect it upon careful examination: as a rule, a small trickle of water flows from the problem area and a small cloud of hot steam comes out. A jet of water can also be found at some distance from the leak, and the buzz of pipes can sometimes spread over quite considerable distances.

If a careful audit reveals that there are no leaks in the system, then another likely cause is a decrease in the patency of pipes in a certain area. The location of this defect is determined by ear by examining the entire heating system. The identified problem area must be replaced. In any case, it would be right to call a plumber to repair and restore the damaged area, since for a non-specialist this task may not be possible.

Why are clicks, crackles and knocks heard

The appearance of clicking or crackling in the pipes of the heating system usually indicates that foreign solid particles have appeared inside the communications. The impact of such small particles on the pipe walls is precisely the direct cause of such noise.

As a rule, heating pipes knock and click when the following problems occur:

• wear of some key elements of the system;
• valve valve malfunctions;
• expansion of metal heating pipes under the influence of heat.

In most cases, knocking in the heating pipes of a private house or apartment building can be eliminated by simply draining the clogged water from the heating system and replacing it with clean water. If such flushing does not lead to the elimination of noise, then the faulty sections of the system must be replaced. In particular, valve valves are subject to inspection, problems with which are often the cause of such noise.

Another reason why it knocks in the heating pipes may be the thermal expansion of the metal structures of the pipelines. Usually in this case, crackling and knocking are quiet and are periodic. Expansion of pipes can lead to small movements and loosening of some structural elements, which leads to the occurrence of noise of this kind. To solve this problem, it is necessary to inspect the fixing points of various parts and elements, and, if necessary, re-fasten them.

Finally, another reason that can lead to clicks and knocks in heating pipes is the so-called water hammer. It occurs when the water circulating in the pipes is instantly shut off by closing a valve, valve or faucet. Since the compressibility of water is practically zero, and the stop of the water jet cannot occur immediately, for a short time at the point of abrupt closing of the tap, the pressure can jump by tens of atmospheres. This can lead to malfunction of valves, valves, threaded connections with the occurrence of clicks or crackling, and even to the failure of some parts. Therefore, in order to avoid this, one should not abruptly shut off the flow of fluid circulating in the heating system.

Boiling water in heating pipes and batteries

Sometimes you have to deal with such a problem as seething or gurgling of water inside heating communications. This noise is caused by the appearance of air bubbles inside the water. In addition to noise effects, another undesirable consequence of such a problem is a decrease in the temperature of the coolant and the efficiency of the system as a whole.

If seething or gurgling noises occur, the system should be checked for slopes and distortions, in which a layer of air can form and stagnate in them. In some cases, to remove air bubbles from the heating system, special air vent valves are installed in the structure on the upper floors. In other cases, correction of distortions and slopes may be required, which requires overlapping and stopping the heating operation throughout the house.

Other sources of noise in the heating system

In addition to the reasons mentioned above, the following factors can be sources of various noises in heating communications:

• sudden pressure surges for one reason or another;
• non-compliance of the coolant with technological standards;
• noise coming from the pumps in the boiler room.

To prevent sudden pressure drops in the heating systems of private or apartment buildings, it is recommended to install special regulatory devices. Sometimes the pumps located in the boiler room can also be the cause of noise, the operation of which can lead to the occurrence of resonance in the water jet elevator of the heating system. In some cases, the resulting buzz or crackling can be eliminated by installing a valve between the elevator and the pipe.

To prevent noise in the heating pipes, it is recommended to avoid the use of threaded valves, and instead install ball valves that close the water flow by turning 90 °. They are much more reliable for such systems, and their operation is almost not affected by coolant flows or other mechanical factors inside the structure.

Boiler equipment used for arranging heating systems can operate on various types of gaseous, liquid or solid fuels, or also on electricity. However, the operation of boilers of any type may be accompanied by certain side processes that often affect the heating system and may cause noise in it.

In particular, wood or coal solid fuels can clog the chimney with reduced draft. The operation of boiler houses on liquid diesel fuel may be accompanied by its incomplete combustion and the accumulation of soot. All this often leads to noise and buzz in heating communications, and requires measures to eliminate these problems.

Noises may also occur due to malfunctions in the operation of pumps, valves or other devices and mechanisms located in the boiler room or in the basement. The solution to the problem in such situations is to repair the faulty elements or replace them.

In general, any specific situation with the occurrence of noise in the heating system requires an individual approach, and there cannot be universal methods here. In some cases, identifying and eliminating faults on your own can be very difficult, and in this situation, the only way out of the situation is to contact qualified specialists.

Living in multi-storey buildings, many residents hear extraneous clicks, buzzing in the heating system. This is due to violations of the rules of operation and installation.

Heating pipes are made of steel, which conducts sound waves well. The round shape of the pipes also does not prevent this.

Noises from heating pipes vary. It could be:

• crackling;
• periodic clicks;
• knock.

All extraneous noises reduce the comfort of living, and also often cause leaks and accidents. Why heating pipes knock, you will find out by reading this article to the end.

How to deal with the rumble in the pipes

The hum in the heating pipes occurs for a number of reasons:

1. During operation, the diameter of the pipes decreases.
2. Water leak.
3. Installation of pipes of smaller diameter.

If the heating pipes are buzzing, the first thing to do is look for a water leak. It's most likely in the basement. It is easy to detect by a cloud of steam and a trickle of water.

Call a plumber to fix the leak. The hum in the pipes must stop.

Reducing the diameter of the heating pipe is another reason for the hum in the pipes. You can detect the place of noise by ear. Walk along the pipes and try to find the cause of the noise. As a rule, the source of the hum is in the basement, where the pressure in the pipes is greater than in apartments.

The narrowing of the diameter of the heating pipes can occur for the following reasons:

1. Faulty and incorrectly installed shut-off valves, which do not guarantee the protection of the system from the ingress of rust, slag or foreign small particles.
2. The formation of plaque inside the pipes, which reduces the diameter of the pipes, as a result of which, the pressure in them increases.

The hum is eliminated by replacing old pipes and valves with ball valves, in which such problems almost do not arise. You can open a water discharge valve located above the expected constriction. Foreign particles, if there are any in the pipe, will exit the heating system.

The water in the batteries boils and clicks

Such noises occur in an air-conditioned heating system, and they can also be caused by debris particles that have entered the system after its repair.

Air is removed from the system using a Mayevsky valve, through which air is discharged from the heating system.

If after that, the noise does not stop, then the possible reason is the incorrect installation of the pipes connected to the heating radiator. A slight distortion can cause unpleasant sounds.

Cracks and clicks can be caused by the presence of debris in the radiators, a broken vent valve. Open the faucet and drain the water, particles may come out of the heating pipes.

Knocking in the pipes

A break in the ventilation valve can cause knocking in the heating system. This happens when the installation is incorrect. If the valve is installed in the opposite direction, then the resulting erosion will lead to its breakage, as a result, there will be a knock in the heating pipe.

A broken vent valve is a serious accident. A sharp increase in water pressure can lead to ruptures in the pipes of the heating system. The riser urgently needs to be blocked and a plumber called. After the repair, the knock should stop.

Extraneous noise may occur due to changes in water temperature. Everyone knows that when heated, metal objects expand and contract when cooled. If the brackets that hold the pipes are not installed properly, they can cause knocking. When the temperature fluctuates, they will move and knock on the steel heating pipes.

If you live in an old building, then this is the most common cause of knocking. It is necessary to go and check the mounting brackets, if necessary, carry out repairs.

Service providers claim that the temperature of radiators and pipes is constant, but this is not entirely true. It often happens that hot water flows through the heating pipes, and then cooled down. An open window in the apartment can cause a short knock in the pipes.

In the entrances of your houses, you often see open windows, broken glass, and all this leads to temperature fluctuations in the heating system, which means knocking in it.

If the brackets are loosely fixed, but pressed against the wall, there will be no knocking, an unpleasant creaking sound will appear.

Having studied the causes of noise in the heating system, we can draw a unifying conclusion - the reason is in old pipes and radiators. It is possible to eliminate them all at once only by making a high-quality overhaul of the entire heating system of a house or entrance. But you can wait a very long time and not wait. Therefore, in the summer, apartment owners should inspect the heating system and fix minor problems.

Why are heating pipes knocking: who is to blame and what to do?

Noise from the battery interferes with sleep?

Let's try to figure out why the heating pipes are noisy and how to eliminate the causes of this noise.

The case when, during normal operation of the system, noise occurs in the heating pipes is not something exceptional; almost everyone has probably encountered a knock or noise in the risers.

Let's try to analyze the most common causes of various kinds of noise.

The risers are buzzing

Most often, residents of apartment buildings complain about a uniform hum or whistle. So why are the heating pipes buzzing?

There are only two main reasons for such noise: a leak in the heating system or a narrowing that prevents circulation, through which a large volume of water passes with difficulty.

Leaks and working discharges

Let's use the most reliable tool: logic. If there is a leak somewhere in the heating system at a short distance from the apartment, then a large amount of hot water is pouring into one of the adjacent rooms.

It's pretty hard not to notice. So, we have to raid the neighbors. The waterproofing of the floors, alas, does not protect from leaks from the upper floors, so if there is at least half of the neighbors in the riser at home, the search will not be long.

However, suppose that all neighbors have dry floors; however, the nerve-wracking whistle continues.

Well, we take a flashlight - and into the basement.

If we are met by clouds of steam, the investigation can be considered complete: it remains only to find the place of the leak and eliminate the leak, whether it is an open vent valve on the riser or a fistula in the bed (horizontal heating pipe).

The fistula, by the way, may well hide under thick thermal insulation: all that we see in this case is a stream of hot water running to the ground. Well, we remove the thermal insulation and look for a leak ...

The place where water under pressure escapes into the atmosphere, by the way, does not have to be located near the apartment in which they complain about noise: sounds travel a long distance through pipes.

Of course, noise is more audible in nearby rooms, but do not forget that people react very differently to unfamiliar sounds: someone will ignore, and someone will suffer night after night in fruitless attempts to fall asleep.

Do not be too lazy to reach the elevator node; it is quite possible that for some reason a vent is open there, draining water from the heating system into the sewer.

The operation of the elevator assembly “to discharge” is usually used only when the heating system is started for a very short period of time, however, a negligent locksmith, who was plagued by complaints about cold batteries by residents, may well, instead of coordinating with a higher organization through official channels, change the diameter of the elevator nozzle , simply let the water flow from the supply pipe directly into the sewer.

However, we walked around the neighbors, studied the basement, but there are no leaks, and the noise continues. We are making the following attempt to understand why the heating pipes are noisy.

Reduced patency of pipes

The next step will be very difficult: you need to find the source of the noise by ear, just walking past the pipes and listening for where it gets stronger. By finding its approximate location, we can understand what exactly happened.

In multi-apartment buildings, the source of noise can be primarily elevator nodes and beds - places where the water flow is fast enough so that its deceleration at the narrowing can be detected acoustically.

In the heating riser, the narrowing will simply lead to a significantly lower temperature of the batteries compared to the neighbors; too low pressure difference between supply and return (in case of bottom filling) risers or between top and bottom (in case of top filling heating system) of one riser.

First of all, half-closed valves or valves with a damaged valve can prevent the flow of water (this, of course, applies to old, screw valves); a piece of slag or scale, standing somewhere across the pipe, can also cause noise in the pipe.

If in the first case you can simply open the valve to the end or repair / replace it (of course, this will require at least a partial reset of the heating system), then in the second case, in order for the cleaning of the heating pipes to be successful, you may need the help of a welder, and in severe frosts and subsequent heating of frozen risers; in regions with a harsh climate, such work is best left until spring.

However, sometimes it helps to stop the heating with any shut-off valves located along the water course higher than the problem area, and the opening of any discharge immediately after the place where the water is blocked: the unfortunate pebble can endure the countercurrent.

A little advice that will be useful at the design stage in any private or apartment building: when it comes to purchasing valves, forget about the existence of screw valves and small diameter gate valves. At all. Modern ball valves that shut off water by turning the handle ninety degrees are incredibly practical, more convenient and create much less problems during operation.

Among other things, they do not have those same narrowings under the valve, where, as a rule, ALL garbage flying through the pipes collects, sooner or later blocking the flow of water, regardless of the position of the valve. In addition, for a ball valve it does not matter how it is oriented relative to the water flow: you can forget about the problem of valve separation in case of improper installation.

Not quite a typical example, but it is probably better to mention it as part of an exchange of experience. In the author's practice, there was a case when the residents of the entrance began to complain: the heating pipes were noisy.

The reason for the continuous noise in the heating riser was the continuous flushing of the battery for several days by the residents. They sincerely believed that it would be warmer for them. If a materialized antonym to the word "economy" is possible, then the owner of this apartment seriously claims its role.

It is worth making one more lyrical digression. The above statement that there cannot be a source of noise inside the heating riser applies exclusively to apartment buildings with permanent heating distribution.

Where there is a so-called barrack wiring - where all the batteries on the floor are combined into a ring, and even made from a great mind not the way it should be - when the batteries crash parallel to the main pipe, but in such a way that each battery breaks the ring - any piece of slag on at the entrance of the liner to the radiator or at any other narrowing, it can sing a song of love to the owners day and night.

Note!

In the case of private houses, the layout of heating appliances, which implies the ability to disrupt the ALL water flow in the heating system with one interference, is aggravated by the fact that private owners' boilers are often equipped with a circulation pump that creates a FAST water flow. At any narrowing, it will make a very noticeable noise.

Batteries gurgling

The next reason for noise in is the air. If something continuously boils and gurgles in the battery, as in the stomach of a sick cow, it is, dear. Sound insulation of heating pipes, even if it were carried out, would not give anything - the sound will be heard through the walls of the radiator.

Are you on the top floor of a house with a bottom outlet (when both the supply and return pipes of the heating system are located in the basement)? Then look for a Mayevsky crane on a radiator or a jumper between adjacent rooms - a device that helps to bleed air.

In all other cases, it is worth looking for a counterslope (of course, if the heating system works normally in all other respects, except for noise). A radiator hanging skewed or a section of the connection to it, which is lower at the riser than near the battery itself - this is what you have to fix, and most likely in the summer - it is hardly possible to stop the heating system in winter for a long time, especially in the harsh climate of Siberia or the Far East would be a good idea.

Batteries are knocking

Another common case is when the heating pipes begin to make not a uniform noise or hum, but periodic clicks, as if someone is hitting the battery with a hammer with tedious constancy. Barabashka? Aliens?

Cracking in heating pipes can be identified by grateful listeners sometimes in a very peculiar way. The author met with a venerable old woman who, in the described case, wrote letters to some government agencies, assuring her that her upstairs neighbors were printing money at night.

So all the same - why do the heating pipes click?

In fact, there are only three typical reasons for such immoral behavior of pipes and batteries:

• Debris in the radiator or riser,
• Broken valve valve
• Thermal expansion coupled with riser or radiator temperature instability.

Debris in the radiator or riser

A variety of pieces of slag that have fallen into the heater and are now spinning in a slow stream of water, periodically tapping on the walls, can be tried to be removed by ordinary washing.

We connected the flushing hose, opened the flushing tap (if, of course, there is one) - and forward. If you want to know how the heating pipes are flushed, videos are easy to find on the Internet.

However, be prepared for an emergency shutdown of the heating riser: cases when the notorious piece of scale jammed the flusher, making it impossible to close, any plumber is ready to list dozens of you.

In the worst case, you will have to remove the heater (after the end of the season, of course) and disassemble it: in the case of a cast-iron or aluminum radiator, unscrew the plugs, in the case of a register - alas, open it with welding.

Broken valve valve

A torn off valve is a typical problem for all types of screw valves, don’t be mentioned by nightfall. When installed “against wool”, when the water flow does not flow from below the valve, but from above, the inevitable erosion of the valve sooner or later leads to the inevitable final: the valve is completely or partially torn off.

It can completely block the flow of water, leaving a dozen or other apartments without heat, or, with a slight misalignment, it can tumble in the jet, creating turbulence, and periodically block the water flow for a moment, creating a water hammer (an instantaneous stop of water - it is practically incompressible, and the pressure jumps many times in a fraction of a second).

Here are the heating pipes. These periodic heavy blows will uncomplicatedly and sincerely rejoice at the whole entrance, and, possibly, more than one.

This is the case when a short-term shutdown of the heating system of the house to replace the valve is fully justified. An hour of torment with replacement and restart is much more pleasant than warming up and restoring risers and radiators thawed into the trash in case one night the valve finds the same cherished position and completely blocks the flow of water.

Thermal expansion coupled with riser or radiator temperature instability

Finally, the third scenario: a periodic soft knock in the heating pipes or in the battery. Quietly, like a gnome with a hammer. Annoying, like a toothache. The interval is from ten seconds to several minutes. Do you still remember the school physics course? When heated, any body slightly expands. When cooled, it cools down.

If we are talking about a sufficiently long object (for example, a heating riser fixed on one side in a sleeve welded to the bracket; the bracket, in turn, is tightly fixed to the wall), then its loose end will move with any significant temperature change in space by fractions, and sometimes even by several millimeters.

If at the same time it is tightly pressed against something, a creak can be heard. Only because of the extremely slow expansion - compression, this creak will be perceived by the ear as rare clicks in the heating pipes.

The problem, to be honest, is more typical for hot water supply systems - simply because the temperature of the supply is less constant there: they drained the water - it heated up, there was no water intake - it cooled down. However, cases when a section of the heating system noticeably changes its temperature several times a day are also not something far-fetched.

A typical example is a window that opens for ventilation directly above an aluminum radiator hung on metal pins. Opened - a little cooled down, closed - warmed up again.

Alas, there is only one method of dealing with the phenomenon: to clearly localize the source of noise, and then eliminate the problem in any way possible. Sometimes for this you only have to put a fluoroplastic plate under the notorious radiator on a steel mount, and sometimes you need to break through the ceiling around the heating riser, that is, consider making it small and filling the cavity with mounting foam, followed by re-plastering the ceiling and sealing the floor.