How is hot water heating calculated? Hot water billing

A new column has appeared in utility bills - hot water supply. It caused bewilderment among users, because not everyone understands what it is and why it is necessary to make payments on this line. There are also apartment owners who cross out the column. This entails the accumulation of debt, penalties, fines and even litigation. In order not to take things to extremes, you need to know what hot water is, hot water heat and why you need to pay for these indicators.

What is DHW in the receipt?

DHW - this designation stands for hot water supply. Its purpose is to provide apartments in apartment buildings and other residential premises with hot water at an acceptable temperature, but DHW is not hot water itself, but thermal energy that is spent on heating water to an acceptable temperature.

Experts divide hot water systems into two types:

Central system. Here, water is heated at a thermal power plant. After that, it is distributed to the apartments of apartment buildings.
Autonomous system. It is commonly used in private homes. The principle of operation is the same as in the central system, but here the water is heated in a boiler or boiler and is used only for the needs of one specific room.

Both systems have the same goal - to provide homeowners with hot water. In apartment buildings, a central system is usually used, but many users install a boiler in case the hot water is turned off, as has often happened in practice. An autonomous system is installed where it is not possible to connect to the central water supply. Only those consumers who use the central heating system pay for hot water supply. Users of an autonomous circuit pay for utility resources that are spent to heat the coolant - gas or electricity.

Important! Another in the column in the receipt associated with the hot water supply is the hot water supply at the ODN. Deciphering ODN - common house needs. This means that the DHW column on the ODN is the expenditure of energy for heating water used for the general needs of all residents of an apartment building.

These include:

technical work that is performed before the heating season;
pressure testing of the heating system, carried out after repair;
repair work;
heating of common areas.

hot water law

The DHW Law was adopted in 2013. Government Decree number 406 states that users central system heating companies are required to pay a two-component tariff. This suggests that the tariff was divided into two elements:

thermal energy;
cold water.

This is how hot water appeared in the receipt, that is, the thermal energy spent on heating cold water. Housing and communal services specialists came to the conclusion that risers and heated towel rails that are connected to the hot water circuit consume thermal energy for heating non-residential premises. Until 2013, this energy was not taken into account in receipts, and consumers used it for decades free of charge, since outside the heating season, air heating in the bathroom continued. Based on this, officials divided the tariff into two components, and now citizens have to pay for hot water.

Water heating equipment

The equipment that heats the liquid is a water heater. Its breakdown does not affect the tariff for hot water, but users must pay the cost of repairing equipment, since water heaters are part of the property of homeowners in an apartment building. The corresponding amount will appear on the receipt for the maintenance and repair of the property.

Important! This payment should be carefully considered by the owners of those apartments that do not use hot water, since an autonomous heating system is installed in their housing. Housing and communal services specialists do not always pay attention to this, simply distributing the amount for repairing a water heater among all citizens.

As a result, such apartment owners have to pay for equipment that they did not use. If you find an increase in the tariff for the repair and maintenance of property, you need to find out what it is connected with and contact management company for recalculation if the payment is calculated incorrectly.

Component "thermal energy"

What is it - a component for a coolant? This is cold water heating. A metering device is not installed on the thermal energy component, unlike hot water. For this reason, it is impossible to calculate this indicator by the counter. How is the thermal energy for hot water calculated in this case? When calculating the payment, the following points are taken into account:

the tariff that is set for hot water supply;
expenses spent on the maintenance of the system;
the cost of heat loss in the circuit;
the costs spent on the transfer of the coolant.

Important! The calculation of the cost of hot water is carried out taking into account the volume of water used, which is measured in 1 cubic meter.

The energy charge is usually calculated based on the value of the readings of the common hot water meter and the amount of energy in the hot water. Energy is also calculated for each individual apartment. For this, water consumption data are taken, which are learned from the meter readings, and multiplied by the specific consumption of thermal energy. The received data is multiplied by the tariff. This figure is the required contribution, which is indicated in the receipt.

How to make an independent calculation

Not all users trust the settlement center, which is why the question arises of how to calculate the cost of hot water supply on your own. The resulting indicator is compared with the amount in the receipt and, based on this, a conclusion is made about the correctness of the charges.

To calculate the cost of hot water, you need to know the tariff for thermal energy. The amount is also affected by the presence or absence of a meter. If it is, then the readings are taken from the counter. In the absence of a meter, the standard for the consumption of thermal energy used to heat water is taken. Such a standard indicator is set by an energy-saving organization.

If an energy consumption meter is installed in a multi-storey building and the housing has a hot water meter, then the amount for hot water supply is calculated based on the data of general house accounting and the subsequent proportional distribution of the coolant among apartments. In the absence of a meter, the rate of energy consumption per 1 cubic meter of water and the readings of individual meters are taken.

Complaint due to incorrect invoice calculation

If, after self-calculation of the amount of contributions for hot water supply, a difference is revealed, it is necessary to contact the management company for clarification. If the employees of the organization refuse to give explanations on this matter, it is necessary to submit a written claim. Her company employees have no right to ignore. A response must be received within 13 business days.

Important! If no response was received or it is not clear from it why such a situation arose, then the citizen has the right to file a claim with the prosecutor's office or a statement of claim in court. The court will consider the case and make an appropriate objective decision. You can also contact the organizations that control the activities of the management company. Here the complaint of the subscriber will be considered and an appropriate decision will be made.

Electricity used to heat water is not free service. The fee for it is charged on the basis of the Housing Code Russian Federation. Each citizen can independently calculate the amount of this payment and compare the received data with the amount in the receipt. In the event of an inaccuracy, please contact the management company. In this case, the difference will be made up if the error is acknowledged.

The main advantage of a direct-flow water supply system compared to a circulating water supply system is its simplicity. It lacks water coolers, recycled water pumping stations, additional pipe networks and other facilities. If there is no need for purification of industrial waste water, then the entire cold water supply will consist of a pumping station and a system of supply and discharge pipelines. The advantage of a circulating water supply system is that a significantly smaller amount of water is supplied from the source than with a direct-flow system; this amount of water should only compensate for its losses from evaporation and wind drift from the coolers and the water consumption for purging cold water, which depends on the quality of the added water and how it is processed. As a rule, the amount of water added to the system does not exceed 5% of the flow of recycled water. With circulating water supply, the diameter of water conduits, and hence their cost, are significantly reduced, the size and cost of water intake facilities and pumping stations of the first lift are reduced, the energy consumption required to supply water to the territory of the enterprise, it becomes possible to use sources with a small water flow rate for industrial water supply, the cost of treatment facilities for make-up water is noticeably reduced. With a circulating system, much less waste water is discharged into the reservoir than with a direct-flow system. In this regard, the task of protecting reservoirs from pollution by sewage is facilitated, the size and cost of treatment facilities and pipelines that discharge waste and treated water are reduced.

Hvs in the receipt what is it

It is unacceptable to change the names of these services, although some regional housing and communal services arbitrarily enter such lines as “DHW heating”, “DHW make-up” or “DHW and cold water disposal” in their payment receipts. It is not at all necessary for the consumer to know how much water heating costs, the final amount that is presented for payment is important to him.

Is it legal to pay for water heating on a receipt in 2018

If the legitimacy of the appearance of an additional line “water heating” in the receipts is in question, in order not to overpay for heating, it is recommended that you first contact the Criminal Code with a request to explain what this item means. The appearance of a new line in the receipt is legal only on the basis of the decision of the owner of the MKD premises. In the absence of such a decision, a complaint should be written to the GZhI. After filing a claim with the Criminal Code, you must provide a response with explanations within thirty days. In case of refusal to justify why such a service is prescribed in the receipt, a complaint should be filed with the prosecutor's office with a lawsuit in court. In this case, if you have already paid the amount indicated on the receipt, Article 395 of the Civil Code of the Russian Federation will serve as the basis for the claim. If a refund is not required, but you still have to pay for services that you are not getting, file a claim to exclude the "heating water" line. In this case, it is worth referring to Article 16 of the Law "On Protection of Consumer Rights".

What is DHW in a receipt

It turns out a vicious circle - many residents often do not pay for hot water due to its low temperature, or refuse this service altogether, switching to electric water heaters. And the enterprises of the heating network cannot carry out repair work, because. the debt of the population to pay does not give them an inflow Money.

Is it legal to pay for hot water supply (hot water supply) in the receipt is divided into 2 points of payment: 1 - water supply (I have 331 rubles); 2 - its heating (1100 rubles)

the cost of heat energy losses in pipelines in the section from the facilities where hot water is prepared, including from central heating points, including the maintenance of central heating points, to a point on the border of the operational responsibility of the subscriber and the regulated organization, if such losses are not taken into account when setting tariffs for thermal energy;

What is hot water, cold water and sanitation in utility bills

The list of services that must be paid for by residents of apartment buildings is clearly defined by Article 154 of the main industry document - the Housing Code. Homeowners and tenants are required to pay for housing maintenance and repairs. In addition, they are responsible for paying for the following services:

What is cold water for hot water in the receipt

The component for cold water is the volume of cold water (CWS) for the needs of hot water supply. In the presence of individual metering devices (meters), this component is determined - according to the readings of the hot water metering device (DHW), in the absence of an individual metering device - according to the standard, i.e. 3.5 cubic meters per 1 person. per month.

What does the abbreviation HVS DPU mean?

The nuance is that if accounting is maintained by an enterprise, then it will write off all kinds of losses in water and its temperature (for example, breakthroughs, leaks) to consumers, and they will pay for it. If a house-wide meter is installed in the house, then residents will pay for the water and heat that entered the house.

The examples of calculations of the cost of hot water and thermal energy given by the employees of the REC, although they are largely conditional, nevertheless show that the presence of a metering device allows you to pay according to actual consumption. Calculation according to the standards is almost always an overpayment.

It should be noted that hot water supply can be centralized and non-centralized.

Non-centralized water supply is the preparation of hot water in intra-house autonomous engineering systems. For example, when a boiler or instantaneous water heater is installed in a private house.

Only centralized hot water supply is subject to regulation (tariff setting). In this regard, a distinction is made between open and closed hot water supply schemes.

open circuit

With an open (centralized) heat supply scheme, the selection of hot water for the needs of hot water supply occurs directly from the heating network.

In accordance with the current legislation, a two-component tariff is set for hot water in an open system, which consists of a component for a heat carrier and a component for thermal energy.

The heat energy component is set by the regulator as a single-rate or two-rate component equal to the one- or two-rate heat tariff, respectively.

A component for a coolant (and for utilities, this is usually water that has passed additional training at the boiler house) is set as a one-rate component and is taken equal to the heat carrier tariff.

An example of calculating the payment for hot water in the presence of an in-house meter

Data for calculation:

consumption volume 5 cubic meters.

The payment for hot water supply provided in the specified apartment will be: 5.0 * 89.38 = 446.90 rubles.

Calculation of the amount of payment for hot water supply in an open heat supply system provided in a residential building in the absence of an internal metering device(if it is technically possible to establish it) is determined based on the consumption standard, the number of people living in a residential building (registered) and the tariff for hot water.

An example of calculating the payment for hot water in the absence of an in-house meter

Apartment house located in the city of Omsk, the supplier of thermal energy is Omsk RTS JSC through the networks of the Omsk MP "Thermal Company".

Data for calculation:

consumption standard in the amount specified in Appendix No. 1 of the Order of the Regional Energy Commission of the Omsk Region dated September 11, 2014 No. 118/46 for 5-storey buildings, 3.4 cubic meters. m / sq. m (in the absence of technical feasibility of installing individual hot water metering).

two-component tariff for hot water, approved by order of the REC of the Omsk region dated December 19, 2016 No. 597/71, from January 1, 2017 in the following amount:

Convert to single component using the following formula:

17.82 + 1422.60 * 0.0503 \u003d 89.38 rubles / cubic meter m;

where 0.0503 Gcal / cu. m - the standard amount of thermal energy for the preparation of one cubic meter of hot water.

Number of residents - 3 people.

The payment for hot water supply provided in the apartment will be: 3.4 * 89.38 * 3 = 911.68 rubles.

Important ! If there is no metering device in the apartment, if there is a technical possibility for its installation, a multiplying factor is applied in the calculation, which from January 1, 2017 is 1.5.

The fee in the above apartment, taking into account the multiplying factor, will be 3.4 * 1.5 * 89.38 * 3 = 1367.51 rubles.

Currently, in accordance with federal legislation, there is a phased transition from open system hot water supply to closed.

closed circuit

With a closed (centralized) hot water supply system, hot water from the heating network is used exclusively for heating, and hot water supply is provided through a separate circuit or is carried out by heating the water pipe. drinking water in central heating points (CHP).

In accordance with the current legislation, tariffs for hot water in a closed hot water supply system are set in the form of two-component tariffs, consisting of a component for cold water and a component for thermal energy.

The component for cold water is equal to the established tariff for cold water, the component for thermal energy is equal to the established tariff for thermal energy.

The fee for public service for hot water supply is determined in accordance with the Rules for the provision of utility services to owners and users of premises in apartment buildings and residential buildings, approved by Decree of the Government of the Russian Federation of May 6, 2011 No. 354, according to formula No. 24.

An example of calculating the payment for hot water in a closed hot water supply system with an in-house meter

Data for calculation:

the volume of consumption in the apartment is 5 cubic meters.

The payment for the hot water service in the first half of 2017 in the specified apartment will be:

14.63 * 5+ (5 * 0.0503) * 1422.60 \u003d 430.93 rubles.

An example of calculating the payment for hot water in a closed hot water supply system in the absence of an in-house meter

The apartment building is located in the city of Omsk, the supplier of hot water is the MP of Omsk "Thermal Company" from the heat sources of JSC "Omsk RTS".

Data for calculation:

consumption standard according to Appendix No. 1 of the Order of the Regional Energy Commission of the Omsk Region dated September 11, 2014 No. 118/46 for 5-storey buildings - 3.4 cubic meters. m/person

two-component tariff for hot water, approved by order of the REC of the Omsk region dated December 20, 2016 No. 623/72, from January 1, 2017 in the following amount:

The payment for the hot water service from 1 person in the first half of 2017 in the specified apartment will be:

14.63 * 3.4 + (3.4 * 0.0503) * 1422.60 \u003d 293.03 rubles.

If the apartment does not have a metering device, if there is a technical possibility for its installation, a multiplying factor is applied in the calculation, which from January 1, 2017 is 1.5.

The payment for the hot water service from 1 person living in the above apartment, taking into account the increasing coefficient, will be 1.5 * 293.03 = 439.55 rubles.

Infographic provided by the REC of the Omsk Region

Over the past few years, the Russian Federation has been gradually transitioning to a two-component tariff for hot water. Management companies need to understand this issue immediately for two reasons. Firstly, you need to correctly calculate the payment and make settlements with the RSO and the owners. Secondly, we have to answer the questions of residents about why the payment for hot water supply is now two lines on the receipts. In the article, we studied this issue in detail and gave examples of how it works. new system billing.

Features of using a two-component tariff when calculating the payment for hot water supply

Until 2012, the cost of a cubic meter of hot water in Russia was the same. The rules changed with the introduction of a two-component tariff for hot water supply when government decree No. 1149 of 08.11.2012 came into force. New rules for charging fees have recently been in force in many subjects of the federation, including the Moscow region.

What is the essence of the two-component tariff for hot water

The use of a two-component tariff assumes that the cost of a cubic meter of hot water for a consumer is determined based on two components:

cold water as a heat carrier;
heat as a resource used to heat it.

The volume of required cold water is calculated according to the readings of the meters and is calculated in cubic meters. The second component is considered a little more difficult. Here you need to take the volume of water taken into account by the PU and multiply it by the standard for heat consumption for heating.

When using the old one-component tariff for hot water, the engineering features of multi-storey buildings were not always taken into account. As a result, in certain regions, including the Moscow region, there were situations when management companies were forced to pay resource-supplying organizations more than they received for this resource from apartment owners.

Representatives of the housing and communal services industry consider the two-component tariff for hot water, which appeared in the Rules for the provision of public services (GD No. 354 of 05/06/2011) since 2016, to be more economically justified. The unified tariff for hot water did not take into account the actual temperature of hot water that entered the apartments of citizens. Regulators usually prescribed in the tariff rate maximum performance and consumers often received lukewarm water. At the same time, of course, it was necessary to pay for it at the full rate.

The use of two-component tariffs for hot water is regulated by paragraph 42 of Regulation No. 354. To perform the calculation, formulas 23 and 24 are used, given in Appendix No. 2 of this regulatory act.

Why is there a need for a two-component tariff?

The consumption of cold water in residential buildings is somewhat different from how the consumption of hot water by citizens is taken into account. In the first case, it is enough to use the readings of individual metering devices. For cold water, there are requirements for cleanliness; otherwise, residents pay only for the volume consumed.

With hot water, the situation is somewhat more complicated, since an additional parameter is added here that the supplier needs to take into account - temperature. IN last years citizens, with the support of regulatory authorities, have learned to defend their rights in terms of providing hot water supply. If insufficiently hot water flows from the tap (the temperature is less than + 60ºС), then this circumstance is fixed by a check, and the Criminal Code is forced to recalculate with a decrease in the fee.

In what cases can the MA, HOA, ZhK, ZhSK apply a two-component tariff for hot water?
How to switch to a two-component tariff for hot water supply services in case of hot water preparation using IHS?
What is the amount of payment for hot water supply in the case of a two-component tariff for hot water?

An analysis of the situation showed that more than 40 percent of the thermal energy when providing MKD with hot water is spent not for its direct consumption, but for circulation in pipes. The water supplied to the house is not consumed in full and enters the heat exchanger on the return line, where it is heated by boiling water supplied from the resource supplying organization. It cools down as it moves. If there is little water consumption, then such heat losses can be so significant that they will not be covered by the payment of residents at a one-component tariff simply for the volume consumed.

The apartment may not open a tap with hot water at all, but it will still consume energy. The simplest example this - heated towel rails connected to the DHW system. Previously, the consumption of thermal energy by these devices was not taken into account in any way when calculating the payment for CHS. Payment for heat can be taken only during the heating season, so heated towel rails and risers heated the air in the apartments without paying for it as a utility bill.

As a result, the question arose of making changes to the calculations for which the payment for hot water for residents of multi-storey buildings is charged. However, the following points had to be made:

what formula to use to distribute between consumers the amount of heat spent on the circulation of hot water;
how to call a utility service for paying for such heat energy, which will fit into the receipt.

Heat supply organizations offered various options solutions that do not fit together.

1. Do not use the standard for heating one cubic meter of hot water, since PP No. 354 does not regulate the moment with the distribution of heat costs.

2. Use the standard for calculating the payment for hot water supply only in those MKDs where there is no ODPU.

3. Calculate the payment for hot water according to the standard, and set the heat losses for circulation to the Criminal Code in accordance with paragraph 21.1 (a) of GD No. 124 of February 14, 2012.

Changing the tariff for hot water as a solution to the problem

Further discussions of the issue and practical attempts to solve it showed that the formula for calculating the cost of hot water should have two components.

First, you need to pay for the consumption of water itself, which, with a two-component tariff, includes the price of cold water and the cost of heating it.

The formula for calculating the cost of heating water is simple: the amount of heat to heat one cubic meter is multiplied by the volume consumed. At the same time, it is taken into account that the water must be heated to + 60ºС laid down by regulatory enactments. Heat tariffs are set by regional authorities.

Secondly, it is necessary to pay for the heat spent on circulation in the hot water supply system. To do this, the total amount of heat taken into account by the DHW meter is taken, from which the energy for heating the water consumed by residents and spent on common house needs is subtracted according to the standard.

When calculating the payment for thermal energy for hot water supply, it is necessary to take into account the total area of the premises, as is done in the calculations for heating. It is wrong to use only the area of apartments here, since heat losses during circulation occur, including in public places.

Actual tariffs on the example of the Moscow region

Since July 1, 2018, there have been regular increases in tariffs for hot water for the population in Moscow and the Moscow Region. This also applies to two-component tariffs. There are no single rates for hot water supply in the region, since more than 900 resource supply organizations operate here. As a result, more than 2,000 tariffs in the field of housing and communal services have to be revised annually in the Moscow Region.

According to the current legislation, the reasonable costs of each enterprise must be taken into account separately. They are the basis for the formation of tariffs.

Municipalities in the Moscow Region are notable for their heterogeneity. Closer to the capital there are compact cities with a high population density, on the outskirts there are administrative formations with a large territory and a much smaller number of inhabitants. This means that in remote settlements long engineering networks are needed, through which a smaller amount of resources will be supplied. The cost of maintaining such communications is higher, which is directly reflected in the tariffs.

In addition, tariff rates for similar services differ due to:

features technological process production and delivery of resources;
uneven level of network modernization;
difference in the amount of resources sold.

For example, let's take tariffs for hot water supply in several municipalities Moscow region.

Payment for each of the components is transferred to different recipients. Usually a water utility is paid for cold water, and a branch of MOEK or Mosenergo is paid for heat energy.

About regulations

When calculating the payment for hot water supply at a two-component tariff, the standard for the consumption of thermal energy for heating 1 cubic meter is used. m of water. These figures are set by the regional authorities. The tariff department of the subject of the federation divides the territory of the region into climatic zones depending on the timing of the heating season. In addition, when developing parameters, the following technical and design features of houses are taken into account:

does the hot water supply system have an external network;
whether the thermal insulation of the risers has been made;
Are there heated towel rails in the apartments?

For each parameter, its own coefficient is provided, indicating the intensity of heat loss in pipes with hot water.

The house is assigned certain indicators as a whole, without taking into account the design features of the pipes in each particular apartment. If the MKD was originally equipped with heated towel rails, but one of the owners cut it off, then the formula for calculating the cost of hot water will not be recalculated for it.

The transition to a two-component tariff for hot water supply in the cities and regions of the Russian Federation is being carried out gradually by the government. At first, both the old one, which takes into account only cubic meters of water consumed, and the new one can operate. tariff rate. However, the process of changes is proceeding consistently, and obsolete single-component tariffs remain in the past. During the transitional period, the final decision on the use of one or another payment system remains with the managing and resource-supplying organizations. At the same time, a deadline for the final transition is set, after which there will be no choice left.

There is no unequivocal answer to the question of whether the application of a two-component tariff will cause an increase in payment. It will indeed be more difficult to calculate the fee, but this does not mean that the resource will become more expensive. The country has a limit index for changes in utility bills, and prices cannot rise above it, including due to a revision of the tariff system.

How to check the correctness of charging for hot water supply.

In many cases, there is doubt about the correctness of charging for hot water.

Let's try to deal with this issue.

First, you need to look at which charging rate applies in your case. There are two of these methods - one-component and two-component tariff. With a one-component method, a single tariff is set per cubic meter of hot water, with a two-component method, the cost of cold water and the cost of heating it to the desired temperature are paid separately.

If a single-component tariff is applied, then everything is clear - the volume of water consumed according to the standard or the meter is multiplied by the tariff, this is the cost of the consumed service.

In the case of two components, however, things are somewhat more complicated, and this is where the way for fraud and tariff manipulation opens.

For example, let's take an apartment equipped with a hot water meter. Suppose that the meter shows the consumption of 5 cubic meters of water per month.

The tariff for water (it should be the same as for cold water) is (for example) 25 rubles / cubic meter.

The tariff for heating is usually given in gigacalories, for example, the cost of a gigacalorie is -2000 rubles.

Here is the whole subtlety of the calculation. A gigacalorie is the amount of heat required to heat 1000 cubic meters of water by 1 degree. Therefore, to heat 1 cube of water by 1 degree, you need 0.001 gigacalories, or 1 megacalorie. And to heat 1 cubic meter of water to 100 degrees, you need 100 megacalories, or 0.1 gigacalories.

This is where the possibility of deception lies. Companies, without further ado, charge “for heating” just the cost of 0.1 gigacalories, however, it is not clear what they are proceeding from.

In fact, this implies that you have water flowing from the tap in your apartment with a temperature of 100 degrees, which, of course, never happens close. Moreover, even in this case, 0.1 gigacalories are not used for heating - after all, before the start of heating, the water does not have a zero temperature, its temperature will be at least 10-15 degrees, which means that heating will require -100 minus 10 = 90 megacalories, or 0.09 gigacalories.

In fact, the difference is even greater - the temperature of the water from the tap is usually no more than 60-70 degrees, you can check it by measuring it with an ordinary thermometer a few minutes after opening the tap, when the temperature is set.

Thus, it turns out that with an initial water temperature of 10 degrees and a final one of 60, you only need to heat the water by 50 degrees, which will require 50 megacalories, or 0.05 gigacalories. As you can see, in this case, the heat needed is half as much as when heated to 100 degrees, which means that the charge for heating should be half as much.

Calculation example: 5 cubic meters of water were used, the tariff for water is 25 rubles / cubic meter, for heating - 2000 rubles / gigacalorie. The tap water temperature is 60 degrees.

The cost of cold water for the needs of hot water supply is 25 rubles x 5 cubic meters = 125 rubles.

The cost of heating water - per 1 cubic meter: at a cold water temperature of 10 degrees and heated - 60, the difference will be - 60-10 \u003d 50 degrees, hence the heat consumption for heating 1 cubic meter will be 0.05 gigacalories, the cost of heating a cube of water is 2000 x 0 ,05 \u003d 100 rubles, five cubes - 500 rubles.

The total cost of consumed water is 625 rubles.

It is easy to see that if we did not take into account the initial and final water temperatures and left 0.1 gigacalories “for heating”, then this figure would increase to 1125 rubles.

This calculation procedure is valid if hot water is supplied without continuous circulation. The circulation is created so that the water does not cool down in the supply pipes, and immediately after the tap is opened, not cold, but hot water comes out of it.

If you have a circulation system in your house, then the losses in it should be taken into account in the ODN column, and not as hot water consumption, but as ODN for water heating. The size of these losses depends on the specific device of the heating system and the state of the thermal insulation of the system, and is calculated as the difference between the heat consumed by the house and total heat for water heating, obtained in the calculation of apartment meters.

In addition, it should be said that the norms of heat consumption for heating water can be established by regional authorities. Therefore, you first need to find out at what rates and tariffs the fee for this service is charged, and then draw conclusions.

In conclusion, I want to say that the average amount of heat for heating 1 cubic meter of water is usually approximately 0.0615 Gigacalories.