Which water heater to choose? Pros and cons of an individual water heating system- Review + Video

Which water heater to choose? Pros and cons of an individual water heating system- Review + Video Boiler for water heating - which one to choose 50, 80, 100 and 200 liters. How it works + Video. Devices that have the ability to heat water for household and industrial needs are called boilers.

The need for them is due to the impossibility of connecting to the centralized network of this service; the absence of the network itself in the area of ​​residence, the connection entails non-recoupable spending of finances, the connection process requires a long period of time by agreement, an individual home management system has been introduced: " Smart home".

A boiler for heating water in these situations is suitable for all parameters.

General information

Advantages of an individual water heating system

  • Which water heater to choose? Pros and cons of an individual water heating system- Review + Video Saving money on hot water bills.
  • Low cost of the device.
  • Fast return on investment.
  • Cost effective.
  • Easy to manage.

  • Regulation of the medium temperature.
  • Self-installation is possible if gas fuel is not provided
  • Service life 3 years.
  • Easy repair.

Negative moments of boilers for water

  • Limited service life.
  • It is necessary to constantly monitor the health of the equipment.

  • A sharp drop in ambient temperature is not allowed in storage systems. This will damage the tank.
  • Limited amount of hot water consumption.
  • Risk of electric shock. When using electric boilers.

  • Danger of escaping domestic gas and accumulation of carbon monoxide in the room if the chimney breaks. In case of gas boiler operation.
  • It is necessary to stockpile solid fuels for the respective models.

The main types of water heaters

In terms of technical relation to the method of heating water. Boilers are divided into storage devices and flow devices.

Accumulative boilers

They consist of a water heating system and a tank, in which liquid accumulates, and then heats up and goes to the consumer.

Tanks are made of different materials and have a coating that protects the base material from water and temperature:

  • Metal base coated with glass-ceramic.
  • Titanium alloy tank.
  • Stainless steel tank.
  • Steel container with durable enamel coating.

Flow systems

Which water heater to choose? Pros and cons of an individual water heating system- Review + Video Assembled from spirally bent copper tubes with nearby heating elements. The option of having a small capacity with an electric heating element built into it is possible. The volume of the tank is calculated on the amount of water that can be heated to the required temperature with a constant flow.

Differences in water volume

  • Accumulative boilers collect water from 10 liters to 100 liters for private households. From 200 liters to 5000 liters for industrial needs.

  • Flow-through water heating systems have a gradation indicating the ability to heat a certain amount of water in 1 minute. These systems are not used in industry. The minimum bar starts from 1 liter and shows the maximum ability to heat up to 4 liters at a cost of up to 3.5 kW per hour.


This characteristic differs mainly in storage devices.

  • The round shape is inherent in boilers with electric heating and a volume not exceeding 40 liters. They are installed on the wall.
  • Tanks with all types of water heating, electric, gas, using solid fuel, have a cylindrical shape. The device is installed on the wall or on the floor. The volume of the tank is from 40 liters to 500 liters.

Note! Gas flow columns have only external resemblance.

Industrial versions are installed in separate rooms called boiler rooms.

  • The flat cylinder shape is convenient for placing the boiler horizontally under the ceiling. In terms of volume, they have boilers from 40 liters to 100 liters. The heating system is applied only by means of electric electrodes.

Differences between boilers in terms of fuel used for water heating

  • Which water heater to choose? Pros and cons of an individual water heating system- Review + Video Solid fuel is used in storage-type water heaters with a volume of at least 100 liters, with floor standing. Wood logs, briquettes from shavings and sawdust, and briquettes from recycled paper are used.
  • Heating of water by burning natural gas is used in columns with a flow-through system.
  • Electric heating elements are used for all types of water heaters. The volume limit is defined up to 500 liters.

  • Alternative methods of heating water.

The principle of operation of water heaters

The operation of all types of boilers is based on one principle of operation, a heat source transfers energy to water as a heat carrier.

Differences are only in design:

  1. Solid fuel water heater has the simplest design, consisting of the following components:

The combustion chamber is located under the water tank. The principle of convection works here. The heated layers rise and the cold water sinks to the bottom.

The titanium chimney tube runs in the middle of the structure. Hot air, rising through the pipe, additionally heats the water. At the top of the tank, there is a cold water supply with a valve system for stopping filling when a critical level is reached, and a safety valve for emergency relief of steam pressure in case of boiling of the coolant is installed.

The smoke evacuation system by means of bends and bends is arranged in a way to extinguish sparks.

  1. Natural gas by its combustion provides heating of water in flow columns and in boilers with a storage system.

The heat exchanger in instantaneous water heaters are steel or copper pipes laid in a spiral over the tubular burners.

The system is controlled by mechanics and electronic controllers.

The machine is in constant working condition. If there is no liquid flow, water does not enter the system, the inlet valve prevents the supply gas valve from opening. The grates do not burn, and only the wick burns in case of a command to start work.

During hot water consumption, cold liquid begins to flow into the system, the thermostat gives a command to supply gas to the burners, the wick ignites the gas. The fire heats up the contents of the tubes. When the required temperature is reached, the thermostat turns off the gas supply or reduces its pressure to a minimum. At the end of the parsing of water and equalizing the pressure, the inlet valve also commands to stop the gas supply. This is a multi-level logical system in principle.

Additional sensors for air analysis and lack of draft in the chimney also work. They are responsible for security.

Storage gas boilers operate on the principle of heating water in solid fuel boilers, but with a safety system for gas operation.

  1. Electric water heaters use the heating elements of the tena. They are located inside the storage tanks.

    They are supplied with electricity through a process control system.

It includes control elements for temperature, water pressure and liquid level.

The principle is similar to the operation of a flow-through gas boiler. But in electric boilers it is possible to maintain a constant required ambient temperature. This is a more economical option against the process of heating the entire volume of cold water to the required parameters.

The device is a thermos. The water tank is equipped with a heating element and thermostats, and is provided with constant cold water supply. The adjustment is carried out by a valve system.

Water is removed and its supply is organized in automatic mode. Below is the control system.

It ensures the operation of the device and ensures safety by means of sensors that signal when an electrical circuit is closed or a leak occurs. All boiler components are located inside a metal casing with a layer of thermal insulation. It does not allow the liquid in the boiler to cool for a long time.

Electric instantaneous water heaters are designed for low liquid consumption. They are mainly used for technical needs when washing food and dirty dishes.

Alternatively, you can use powerful shower channels. Their principle of operation lies in the passage of cold water through a heat exchanger in the form of tubes built into electric heating elements. The control system reacts to the pressure in the coil system and the increase in temperature.

  1. Indirect heating boilers operate on the principle of using "excess heat energy". It exists in other systems and is directed to fulfill other purposes.

    Such a boiler consists of a tank with a large amount of water from 100 liters to 300 liters.One or more heat exchangers are located inside it. It depends on the number of heat sources connected to it. Convenient option for multiple sources. These can be:

  • Heating system of a residential building.

  • Heat removal system from pumps.

Connection to the solar water heating system

The water in this accumulator is always at the same temperature. Mixing has little effect on the temperature level. Cold water is supplied from the cold water system through a simple float valve. Heating takes place constantly and all year round.


When choosing a boiler for heating water, it is necessary to take into account the number of people living, this is a criterion for the volume of water consumption. Frequency of use, how many people work. This is the reason for the simultaneous use of the apparatus.

Which is more economical to use, natural gas or electricity.

You can decide and make your own indirect heating boiler.

There is a lot of water, constantly warm water, enough for everyone.