There are several options for calculating the required number of sections:

1. By room area.

This method is mainly used for standard apartments with a ceiling height of 2.45-2.6 meters. For 1 sq. meter requires 100W of thermal power. It is necessary to calculate the area of ​​the room and multiply it by 100. Then it should be divided by the heat transfer of the section presented in the table above. Calculated using a simple formula:

k=s/u*100,

k— number of sections

s- room area

u— section heat transfer

2. By volume.

Most often, this method is applied to rooms with high or too low ceilings. The recommended SNiP value is used. For 1 cu. meter requires 41 W thermal power:

k=v/u*41,

k— number of sections

v- volume of the room (the product of the length of the room by its width and height)

u— section heat transfer

3. Maximum accurate calculation.

This calculation takes into account:

- number of windows in the room;

— type of windows (equipped with double or triple glazing);

— efficiency coefficient of wall insulation;

- the number of external walls of the room;

— height of the room;

— heat distribution when using a radiator during the heating season.

During repairs or if a planned replacement is necessary, it is important to install high-quality radiators so that nothing can spoil your stay in the apartment. Let's try to navigate the choice of equipment and materials.

A radiator is a heating device with channels through which coolant passes. There are many reasons for replacing a radiator: they have rotted from old age and are leaking water in small streams. Such problems can arise from mechanical impact (impact). They do not provide the expected warmth and cannot withstand pressure - the fault is due to mineral deposits on the inner walls of the radiators themselves. This can lead to reduced clearance in the radiator.

Heating radiators in apartments are replaced more often than in private houses. In private homes, the owner can independently regulate the supply. This cannot be done in apartments, so you have to put up with what you have or install a convector. There are also thermostats for sale that can be installed in apartments and regulate the heat yourself.

When unscheduled replacement of radiators occurs, the cost of dismantling and installation increases. The best time to replace radiators is the off-season. The system, as a rule, is in a passive state, and permission to replace it will be much easier to obtain.

Types of radiators:

1. Panel. Such radiators heat up faster than other types of batteries. or lateral. The battery is made of rolled steel.
2. Columnar. Batteries of two collectors connected to each other by tubular columns. The materials for the manufacture of such radiators are aluminum and steel.
3. . Consist of two or more hollow sections. You can make an unlimited number of sections on a radiator; their number depends on the area of ​​the room. You also need to take into account the weight of the entire structure so that the fastenings can withstand the entire load. Batteries can be made of cast iron, steel, aluminum and bimetal.

It doesn’t matter whether you replace heating radiators yourself or hire workers, you should always choose the best equipment. What is important to pay attention to?

Radiators can be inexpensive, with low heat transfer, but must be durable.

The equipment passport indicates the test and operating pressure. You should pay attention to the operating data; in cases of force majeure, a reserve of test pressure will remain. Why is pressure so important? When heat is supplied to the 9th floor, the pressure is 6 atmospheres, and when supplied to the 23rd floor - 15 atmospheres. Not all types of radiators can withstand such pressure; those made of aluminum are eliminated immediately. In the private sector, it would be wise to install aluminum batteries, since high pressure is not required to supply coolant. In nine-story buildings, cast iron batteries are mainly used. They can easily withstand a working pressure of 9 atmospheres. If the pressure supply is higher, then in this case you need to install radiators made of high quality steel or bimetal.

Corrosion resistance is a very important factor when choosing equipment. Batteries that are almost resistant to corrosion include cast iron. Aluminum batteries are considered the weakest according to this criterion. If the choice is made of aluminum radiators, then be prepared for the fact that you need to fill in anti-corrosion agents.

The most common reason for replacement is low heat transfer. Therefore, when choosing a radiator, this indicator plays an important role. The documents upon purchase indicate the power of one section. To calculate how many sections you need for a room, remember that 1 m2 requires a power of 80–120 watts.

It is better to cut radiators according to this scheme: agree with the neighbors above and below about replacing the pipes. This will make the work easier, and the neighbors will receive a section of the new pipeline. If an agreement fails, you will have to dismantle the riser by cutting the pipe near the floor and under the ceiling only in your own apartment. In this case, aluminum propylene pipes must be used.

Battery connections can be made from materials such as metal-plastic, polypropylene or metal welding on spools. Metal-plastic is used most often. Installation is easier and takes less time. Longer service life. Before cutting off heating radiators, you must first turn off the water in the system. Then, using a pump, pump out the remaining liquid and only then turn off the water to your radiator. Having approximately calculated the amount of water in the radiator, prepare a container to drain it.

Taking the necessary measurements:

1. Record and record the diameters of the radiator inlets and outlets of the neighbors living below and above.
2. Determine the lengths of pipelines that are needed to connect the neighbors above and below.
3. Calculate the length of pipe that is needed in your apartment.
4. You also need to take into account the length of the pipe that passes through the ceilings. This pipe will be the same diameter as that used when connecting the old battery.

Purchase supplies. Radiators are sold without additional parts, so they need to be purchased separately:

• two types of plugs - one blind and two through. In order to bleed air during the start of the heating system, you need to purchase a plug that fits the Mayevsky tap;
• gaskets for all types of plugs;
• reinforced polypropylene pipes;
• “American” tap for maintenance work and for complete shutdown;
• polypropylene tap for turning on;
• PPR end cap with a diameter of 20 mm with a similar thread. You will need it when connecting to neighbors.

Before dismantling, you will need a number of tools, such as a gas soldering iron and an adjustable wrench, a drill, an angle grinder, a tape measure, and a level. Old batteries are connected to the pipeline using squeegees, onto which a coupling is wound and a lock nut is screwed on. First you need to tighten the threads of the lock nut on the lower and upper connections. After using the level, determine the cutting locations. Fix the tool so that at least 1 cm of thread remains on the pipe. A level is necessary in this procedure, since the evenness of the installation of new radiators depends on it. Mark the cut locations with a pencil and cut off the batteries.

After dismantling, make markings for new radiators. The gap between the floor and the radiator should be at least 10–15 cm. If the battery is placed lower, it will be troublesome to clean and air circulation will be difficult. You also need to take into account the distance from the window sill; it should not exceed 15 cm. Heat transfer deteriorates when you get too close to the wall, so it is recommended to keep the distance between the radiator and the wall within 3–4 cm.

At the initial stage, you need to prepare the battery by equipping it with foot nuts and the pipes with ball valves. It is best to start installation with taps. Wrap the sealing material around the pipe. It is important to get a reliable connection. The thread must be painted with any paint, then the tow must be wound clockwise and painted liberally. Now you need to screw on the tap. The excess tow that did not screw in should be painted generously again.

Screw the fittings on both sides of the radiators into the internal threads of the radiators on each side using feed-through nuts. Futor nuts are installed in most cases on rubber or paronite seals. Install the “American” ones in the places where the pipes will be connected to the batteries. On the other side, a plug is placed at the bottom, and a Mayevsky tap is placed at the top of the radiator. Radiators are installed using brackets.

When using a level, make precise markings for the fasteners. Drill holes in the wall with a drill. When all 4 brackets are installed, you can hang the radiators in their rightful place. Use an adjustable wrench to tighten the nuts. Now you can start the heating system by filling the riser with coolant. Using the Mayevsky tap, do not forget to bleed the air. Check the entire heating system for hidden leaks.

The Vodokanalsbyt company is a large company providing high-quality plumbing services in Moscow and the region. Our capabilities allow us to successfully solve even the most complex problems.

FAST! QUALITATIVELY! RELIABLE!

Installation work – from 2,400 rubles

Radiator removal - FREE!

The surveyor's visit is FREE!

Battery delivery is FREE!

We guarantee quality work!

• Free engineer visit
• Materials at wholesale prices
• 5 year warranty on installation and materials
• Free delivery of materials
• We ourselves will agree to disconnect the risers with the management company
• Masters with many years of experience

We professionally replace heating batteries in apartments and houses at low prices. We provide a full range of services and guarantee integrity and a responsible approach. Installation is performed by experienced craftsmen who have high-precision tools and appropriate skills.

Over the years of work, we have developed an optimal algorithm for cooperation with the customer. We are ready to go to any site, be it an apartment, office or private house. Information about market conditions, accumulated technical knowledge and strong business ties with manufacturing plants have made Vodokanalsbyt one of the industry leaders.

Prompt interaction with direct suppliers of materials and equipment allows us to set prices recommended by manufacturers. This eliminates multiple intermediary markups, overpayments and additional payments.

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Cost of work to replace heating radiators and cold water and hot water risers in an apartment

Name of works	Unit change	Cost, rub.
Assembly, installation and connection of a new radiator	PC	2400* rub.
Grooving a wall for a pipe or die	PC	500 rub.
Drilling a through hole in the wall for a pipe Ø ½, ¾	PC	800 rub.
Installation (layout) of a pipeline from the collector or riser to the heating device (Rehau pipes)	p/m	150 rub.
Relocating the heating riser	PC	2000 rub.
Replacement of cold water riser Ø 25mm/32mm (welding)	PC	5500 rub.
Replacement of hot water riser (including heated towel rail bypass) Ø 25mm/32mm (welding)	PC	8000 rub.
Assembly and installation of heated towel rail lintel Ø 25mm/32mm (welding)	PC	5000 rub.

* when installed on a ready-made eyeliner

Call an engineer

Ask a Question

The cost of work is also fixed and does not increase during execution.

Enter the number of rooms:
1 2 3 4 5 6 7

Distance from floor to window sill:

Area of ​​the 1st room Number of batteries 1 2 3

SPECIAL OFFER!!!

RADIATOR REPLACEMENT COST
HEATING – 2,400 RUB.
(WHEN REPLACING 2 OR MORE RADIATORS)

*The final cost of installation and consumables is calculated by a field specialist and depends on
complexity of the work, the required type of liner and type of connection (threaded, welded, polypropylene, stitched
polyethylene, presence/absence of bypass, etc.)
Cost of sections (calculated by area).

ADVANTAGES OF VODOKANALSBYT

• More than 15 years of experience in the field of plumbing communications;
• Warranty for work from 5 years;
• Warranty on radiators and components for 10 years;
• Free consultations;
• Qualified specialists;
• Preparation and production of components for individual orders;
• Replacement of heating radiators on welding and threaded connections.

What do you need to know when installing heating radiators?

The heating system is the most important element of the comfort of any apartment or house. It provides the desired indoor air temperature regardless of the weather outside. That is why only professionals should be hired to install heating radiators in apartments and houses.

The heating system operates under high pressure, and there are no small details with it. In addition, existing radiators made of different materials are designed for specific loads and operating modes. An ill-conceived and illiterate approach can reduce the performance of even expensive premium equipment. And unqualified installation of heating radiators carries a real threat of accidents and leaks, which may cause large financial losses.

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It's summer! A great time to relax, play sports, and also... replace the central heating battery. Seriously! After all, if you have old batteries, then in winter you will freeze again and wrap yourself in blankets instead of enjoying a comfortable temperature. It's not that difficult to do. Komsomolskaya Pravda understood the intricacies of the process.

BATTERY - FIRE!

Basically, you have three options. Adventurous - do it yourself. Practical – contact your housing services or other management company. Finally, the third and most expensive option is to call commercial plumbers. Each option is attractive in its own way.

Replacement through Zhilkomservice

Replacement of failed heating devices is carried out only after their service life has been exceeded. And it is usually 15-30 years. If you have an old home that hasn't been renovated in decades, you have a chance to get a free radiator replacement. In all other cases, the Housing Office makes only minor repairs.

Replacing heating batteries in an apartment through the housing office begins with submitting an application. Everyone knows that dealing with these organizations requires a certain amount of patience. Therefore, prepare such a statement in advance, preferably in two copies. On one of them, the responsible person from the Housing Office will have to put an acceptance mark. Also make sure that there is a date, an incoming number and a legible signature of the person receiving it. This will be useful to you in the future. For example, if the battery suddenly breaks, then compensation for material damage will be assigned to the service organization.

Commercial Battery Replacement

In fact, you can replace a heating battery through your HOA or housing services on a commercial basis. This is no problem, if only there was money! In one of the homeowners' associations in the Nevsky district, they are willing to take on this. Disabling the riser costs 500 rubles. You need to agree on the time of work in advance and submit an application. Further everything is subject to agreement with the plumber. You can hire a person who is a contractor in the HOA to carry out this responsible mission. You can also invite a third-party wrench worker. The first option is perhaps more economical. Commercial offices offer to do this for an amount from 6 to 11 thousand rubles. You need to understand that this does not include the cost of a new radiator.

Replacing the battery yourself

I hope you have already guessed that you will have to submit an application to the HOA in any case. After all, work to replace a radiator involves turning off water throughout the entire entrance. Therefore, for example, it is unlikely that risers will be closed on weekends. If you decide to do this on weekdays, then you need to remember a few important tips.

TIPS FOR BEGINNERS

Radiators are usually installed under the window for a reason. The fact is that warm air will rise to the top and prevent cold air from entering the room from the street. It is also very important to pay attention to the distances of the battery to the wall, ceiling and window sill. The battery should be placed at a distance of 3 centimeters from the wall, and a distance of 10-15 centimeters should be maintained from the floor and window sill.

Replacing heating appliances in an apartment is a process that should be approached as responsibly as raising children. The quality of heat transfer to the room directly depends on how well and competently all the work is completed, from the choice of radiator material to the connection of heating devices.

Nowadays, even replacing heating radiators in an apartment yourself is not so difficult. But you need to use only proven designs and high-quality materials, and comply with the requirements of technology and standards.

STEP-BY-STEP INSTRUCTION

1. Agreement. Go to the duty officer at the HOA and leave an application to shut off the heating riser. After they discuss the time with you and answer positively, you can proceed to the next stage.

2. Removing the old battery. If the coolant in the riser is drained, then, perhaps, there is nothing difficult for an experienced person. It is enough to unscrew the threaded connection. But if the battery is very old, then you won’t be able to get rid of it with a wrench. You will have to cut the weld with a grinder. In this case, you need to comply with all safety regulations and technology. However, if you have an angle grinder, then you probably understand the safety rules. Otherwise, why do you need such a tool?

3. Fitting and hanging the new radiator. A very important point, because you need to correctly align the horizontal and vertical, eliminate distortions and other defects. Replacement and installation of heating radiators should be carried out using a building level and other tools. Otherwise, the coolant will be distributed unevenly. And the apartment will still be cold.

4. Connection of the battery to the riser. Now you must either screw the battery to the modern riser outlets, or use welding.

VERBATIM

Svetlana Morozova, member of the Homeowners Association of the Central District of St. Petersburg:

If changing batteries does not imply an increase in power, then a person has the right to change the radiator himself, without approval from the regional interdepartmental commission, simply by leaving a request in his HOA. But if you want to increase the number of sections, say, from four to six (thus increasing the amount of coolant), then you need to contact the regional authorities. In practice, no one does this. Partly because the law does not provide for fines, and partly due to simple negligence. Now they don't pay attention to this. But when the situation reaches a critical point, it is possible that some kind of sanctions may follow. Let’s say a commission of representatives of homeowners’ associations and supply organizations will identify violations and send cases to court. But when this will happen and whether it will happen at all is difficult to say.

Owners of apartments in multi-storey buildings often complain about the poor quality of heating - the apartments are constantly cold. Irritation is also caused by the terrible appearance of outdated heating batteries, clearly asking for a landfill. In order to get rid of irritating factors and improve the quality of heating, drastic measures are needed. Replacing heating batteries in an apartment will be one of the measures to solve problems with the heating system.

What will we talk about in this review?

• About the features of centralized heating systems;
• About the procedure for replacing heating batteries.

If you know how to choose heating batteries and how to replace them, everything will take a few days at most.

Features of centralized heating systems

Replacing heating radiators in an apartment will require certain knowledge. In particular, you need to know about the operating features of heating systems in apartment buildings. Here, batteries and pipes are exposed to high pressure - it allows the coolant to be pushed through numerous radiators, connections, bends and transitions. Gravity flow is impossible here, so powerful pumps are used to create increased pressure.

In high-rise buildings, the pressure in centralized heating pipelines reaches 15-20 atmospheres. Therefore, radiators used in apartments must withstand such pressure without breaking into separate pieces. If you install an unsuitable radiator in your apartment, it will simply burst when the coolant is supplied.– the coolant will flood the floors and appear on the neighbors’ ceilings.

If you choose the wrong heating radiator, it can rupture, resulting in damage not only to your property, but also to the property of your neighbors.

But that’s not all, since in centralized heating systems water hammers are often observed - sometimes they are even audible when the elastic coolant hits the pipes with force, causing them to shudder. The pressure during water hammer is 2-2.5 times higher than the nominal values. If there is a fragile battery in the heating system, it will rupture - with all the ensuing (in the literal sense of the word) consequences.

It is impossible not to note the quality of the coolant in the heating system. It is far from ideal, as heating specialists are well aware of. The coolant contains:

• Aggressive salts formed upon contact with metal and other elements of the heating system;
• Chemical impurities used to clean heating systems from scale and rust;
• Small mechanical impurities - when mixed with water, they literally undermine pipes and radiators, leading to mechanical damage.

What flows through the pipes of centralized heating systems can hardly be called water - it is a rather aggressive liquid that corrodes metals that are not resistant to corrosion.

How to choose new batteries

Replacing heating batteries begins with their purchase. In stores we can find a variety of radiators, ranging from cast iron to bimetallic. Which of these is suitable for residential installation?

It should be noted that cast iron batteries are quite often found in low-rise apartment buildings. And consumers are actively getting rid of them - they are outdated and do not meet modern requirements. They can withstand high pressure, but They are not suitable for installation in high-rise buildings. Even if you choose a modern designer model, it will not be able to please you with its high efficiency - low heat transfer and high heat capacity affect it.

Steel panel and tubular batteries

Steel batteries are used to heat 9-16-story buildings, but they cannot be called resistant to high pressure. In addition, they are often broken by water hammer that occurs in centralized heating systems. Modern panel steel models are not recommended at all for residential installation- they are only suitable for low-rise housing with autonomous heating, where there is no high coolant pressure. As for tubular models, they are quite durable, but are very rarely found on sale.

Aluminum batteries

Aluminum radiators are not suitable for heating apartments under any circumstances. The thing is that aluminum cannot withstand high pressure and is completely unable to withstand water hammer. As a result, the batteries burst during filling and initial testing of the heating system. Aluminum is also susceptible to corrosion, which occurs due to exposure to aggressive coolant - in such conditions, their service life will not exceed 3-4 years.

Durable bimetallic radiators

Bimetallic radiators are the best choice for installation in apartments. Here are their advantages:

• Light weight and easy to install;
• High heat transfer and minimal inertia;
• Resistance to aggressive coolant;
• Resistance to high pressure in pipes;
• Resistance to strong water hammer.

Many manufacturers of bimetallic batteries confidently claim that their products can withstand pressure surges of up to 50 atmospheres. This indicator is really significant, so these batteries are recommended for residential installation.

The basis of bimetallic batteries are reliable and durable metal cores through which the coolant flows. An aluminum “jacket” is placed over the cores, dissipating heat in the rooms. Aluminum here has no contact with the aggressive coolant and is not subject to pressure - strong and durable steel takes on all the hardships.

In addition, bimetallic radiators have an attractive appearance - they are much more beautiful and compact than their cast-iron counterparts. As for heat transfer, it is 70-80% higher - the house will be warm and cozy. Combined with ease of installation, all this makes bimetallic batteries the best solution for residential installation.

The only disadvantage of bimetallic batteries is their high cost. But on sale you can always find models from little-known manufacturers who practice more affordable pricing policies and offer batteries at affordable prices.

Read about which heating batteries are best to choose for a private home in another article on our website.

Preparing to replace heating batteries

We have already completed one of the most important parts of the work - we have selected suitable heating batteries by choosing a bimetal. Now we need to understand the stages of further work. Replacement of heating radiators is carried out through the housing office, officially, since the general house heating system is affected here. The procedure is performed in several stages:

• Submitting an application to the Housing Office;
• Agreeing on the date of work;
• Checking the integrity of the heating system.

Under no circumstances should you turn off the heating riser yourself; this should be done by specialists from the housing office.

In order to begin replacing batteries, you must write an application to the Housing Office. It must be said that we do not have the right to independently control the shutdown and drainage of coolant from the risers- this is what plumbing specialists do. After submitting the application, you need to agree on a date for the work. On this day, the specified house will be visited by a master plumber who will drain the water and carry out further checks. You also need to agree with the specialists who will carry out the work.

If you have experience in replacing heating batteries, then you can carry out interior work yourself. To do this, you need to prepare the necessary tools and pipes, purchase suitable radiators, think over a diagram for connecting new radiators (the old diagram may not fit modern radiators. We recommend replacing heating batteries using gas welding. This may seem difficult to some, but gas welding allows you to achieve exceptional quality connecting seams.

If you do not have experience replacing batteries, you should entrust the procedure to an experienced installation team. They will complete all the work in the shortest possible time, check the integrity of interior elements and hand over the results to the customer. The cost of replacing heating batteries in an apartment will be indicated before the installation and dismantling work begins - the price for services is specified in the estimate.

Can't find a good team of specialists? In this case, you can contact the Housing Office - they can provide their own specialists who will carry out all the necessary work and check the integrity of the system together with a plumber.

Procedure for replacing heating batteries

To replace an old radiator, first close the riser, then cut off the radiator, install a new radiator, not forgetting to install three taps into the system to simplify maintenance of the system in the future.

Replacing heating batteries in an apartment begins with a specialist from the housing office disconnecting and draining the riser - all work is carried out in the absence of coolant. As soon as the heating riser is drained, we begin work. Using a welding machine or grinder, we cut off the old heating batteries and send them to the scrap yard. We install new bimetallic batteries under the window sills and level them.

Next, we prepare the pipes - they will be used to make the connection. If old tubular steel batteries were installed in the apartment, then the inlet and outlet pipes will be located too close to each other. Therefore, we need to space them out so that they match the location of the inlet and outlet holes on the new radiators - this is done using sections of curved metal pipes.

Together with the radiators and pipes, we build in taps that allow the radiators to be disconnected from the heating system, even if it is on. To do this, we place a jumper on each battery, which will be responsible for the unhindered passage of the coolant. Three taps are also installed here - on the jumper, at the inlet to the battery and at the outlet. If the battery suddenly breaks down or starts leaking, you can replace it without notifying the housing office. Also, this scheme will allow you to regulate the degree of heating of the rooms - the presence of taps makes it possible to individually adjust the temperature in each room.

Please note that if you install 3 taps, you are responsible. Under no circumstances should you turn off the taps in front of the heating radiator and the tap on the jumper at the same time. Otherwise, you will block the riser and stop the circulation of hot water in the pipes, which will lead to freezing of the entire heating system in your home.

To test the heating in an apartment, a special pump is used, and the process itself is called pressure testing.

The presence of taps has another advantage - you can easily replace a section of the heating radiator. To do this, open the tap on the jumper/bypass, close the inlet and outlet taps, remove the battery and replace the section (true for dismountable batteries).

As soon as the connection work is completed, you need to check the integrity of the system. Otherwise, the coolant will flood not only your apartment, but also the apartment of the neighbors below - they are unlikely to burst with delight when they find yellow spots and dripping water on their ceiling. The inspection is carried out by a housing office specialist.

Do not throw away documentation from the equipment used - remember that the Housing Office may require these documents at the stage of submitting an application and agreeing on the date for the work. The whole point is that the equipment used for replacement must meet certain requirements and not become an obstacle to the operation of the general heating system.

When is the best time to replace batteries?

Most repair issues are resolved in the summer. At the same time, procedures for replacing batteries are performed. The thing is that in summer the heating system is inoperative, so draining the riser will not cause any trouble. You can easily replace old batteries with new ones, a specialist will fill the system with coolant, check its integrity - the system is ready for further use.

Replacing heating batteries for your apartment in winter is complicated by the fact that your neighbors will be left without heat - they are unlikely to be happy about this fact, given that many have small children. In the cold season, when the heating systems are on, a maximum of 2-3 hours is allocated for replacing batteries - it is unlikely that anyone will allow a long shutdown of heating. All this is labor-intensive and requires coordination of each step with the Housing Office. That's why We recommend that battery replacement work be carried out during the warm season.

The exception is the replacement of heating batteries in an apartment in winter if accidents occur - in this case, the heating will be turned off without any questions asked, in order to restore the functionality of the system as quickly as possible and supply heat to the apartments.