How to fill the heating system in a private house: tips and tricks

The most common today in most countries, including in Russia, are heating systems filled with a liquid coolant. This is a complex of equipment - complex or simple. In the latter case, it is an open scheme. In the structure of such systems:

  • Boiler rooms;
  • Heat exchangers;
  • Station of pumping equipment.

All the nodes are connected by a pipeline. The quality and characteristics of the circulating fluid will affect the operation of the equipment, so it is so important to select the coolant correctly, which will be discussed in the article.

What should be the coolant

If you are faced with the question of how to fill the heating system in a private house, then you have to understand what the coolant should be. Ideal fluid for this role has not yet been invented. This indicates that each of the known materials is operated under certain conditions.

An important factor is the temperature of the coolant, in violation of which the substance can change its properties, which leads to the shutdown of the system. The correct coolant should carry more heat in a short time, it should have a small viscosity, it should not cause corrosion and should not be a danger to the inhabitants of the house. Among other things, with heat transfer, heat loss should be minimal, and low viscosity will be an indicator of the rate of pumping and increase in efficiency.

If you are thinking about the question of how to fill the heating system in a private house, you should be aware that this or that coolant can cause corrosion, so you will encounter limitations when choosing the mechanisms and parts of the system.

Safety of use

If we are talking about safety, then the coolant should not exceed the norm for toxicity, the temperature of ignition, the same requirements are also applied to the vapor of the liquid. An important factor in the selection is the cost. The price should be relatively low, otherwise the consumer should be able to use the coolant for a long time without replacing it.

The use of water

Before deciding what to pour the heating system in a private house, you should consider the most common solutions to this issue. One of them is water, the advantages of which are expressed in the highest heat capacity among all liquids, as well as in the lower density. Thus, a kilogram of water, the temperature of which is 90 ° C, will cool down to 70 ° C, releasing heat in the volume of 20 kcal.

Solving the question of what to fill in the heating system of a private house with an electric boiler, you can consider as an option water that differs from environmental and toxicological properties from synthetic substances. It is safe for the person, and if there is a leak, it will not bring additional troubles. Such a coolant can be easily obtained, with a lack of volume of the bay in the system the right amount. This coolant has no competitors at a price, cheaper liquid simply can not be found.

For reference

If you are faced with the problem of how to fill the heating system in a private house, you should take into account that water in its usual form should not be used, because it is rich in salts and oxygen. Over time, such additives on the internal surfaces of the heating system will precipitate scum and corrosion will appear. And for the system to work without interruptions, the liquid must be softened before use.

To do this, you can use one of the existing methods. This can be thermal or chemical technology. In the first case, the technique is based on boiling. Water should be placed in a metal tank, in which it must be heated. When boiling, carbon dioxide will be removed, and salts will be deposited on the bottom of the vessel. Persistent compounds of magnesium and calcium still remain in the water. The chemical method works by means of reagents. With the help of calcined soda, sodium orthophosphate and hydrated lime, salts become insoluble and drop out, becoming a sediment. The subsequent filtration will eliminate the residues of harmful substances.

Why do many refuse water

If you have a question about what to fill in the heating system of a private house for the winter, then, most likely, you will have to give up water. In this case, an important role is played by such a coolant parameter as the temperature regime. If the temperature in the building falls below 0 ° C, the liquid will freeze, and this will cause a breakdown of the heating system.

Application of antifreeze

When the colds come, the so-called non-frosting, which is a special liquid for heating systems , becomes topical . If the pipes are filled with such a coolant, even if the temperature drops to a critical one, they will not burst, which is very important for housing that is used irregularly. As an energy carrier in this case, antifreeze is used, which is designed for operation over a wide range of temperatures, ranging from -30 to -65 ° C.

When there is a question about what to fill in the heating system of a private house in winter, then it is worth paying attention to this option, which does not harden, but acquires an altered state of the type of gel when the temperature drops below 0 ° С.

Returning to its original state, the antifreeze will not lose its original properties and will not pose a threat to the heating system's contour. To remove foci of corrosion or scale, manufacturers use additives as special inhibitors. Due to this the period of operation of the heating system can be increased by several years.

What to consider before choosing an antifreeze

If you still can not decide what to pour in the heating system of a private house - water or antifreeze - then you should take into account the fact that the last of these options is only for a few seasons of operation. It can be 5 years, or rather, 10 seasons. After this period, the volume of the coolant must be replaced. Manufacturers and do recommend using antifreeze for about 3 years.

Which coolant is suitable for aluminum radiators

For a system of aluminum radiators, you can use a coolant based on ethyl alcohol, which can easily be prepared independently. Ultimately, it will be possible to obtain a liquid that will be an antifreeze mixture containing ethyl alcohol and distilled water. This fluid will have a slightly higher viscosity than ordinary water. However, this indicator will be lower than that of factory antifreezes.

The fluidity of this fluid is lower compared to antifreeze, which allows to neglect the requirements for tightness of the contour connections. Such a liquid will not be able to damage the rubber seals of the system. When consumers think about the problem of pouring a private house with aluminum radiators into the heating system, they try to choose just such mixtures, since they have one important advantage over the other options, which is expressed in the ability to use compositions for metal radiators. This is due to the fact that alcohol will prevent the development of corrosion, and this is important for those systems, the destruction of which can cause unpleasant consequences. In this case, it is recommended to use hard water, which together with alcohol will prevent the formation of scale on the internal surfaces of products. The sediment will form in a solid form, and with a preventive wash from it, it can be easily disposed of.


Before selecting the antifreeze, it is recommended that attention be paid to the fact that these compositions may have different purposes. Some are for cars, others are for heating systems. They differ in composition, so they can not be confused. The raw material can be ethylene glycol or propylene glycol. Quite often, home masters today decide what to fill in the heating system of a private house. Tosol, also called antifreeze, can differ in viscosity, freezing point and price category. This should be remembered.

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