How to clean the cast iron battery without removing

Cleaning heating batteries

Some people take the easiest route and just buy new equipment. But this is quite costly, especially if previously installed not the old cast-iron “accordion”, but quite modern radiators. for example, bimetallic, which are quite high cost.

It will be much cheaper if you just flush the battery inside. Of course, this is not the easiest job, but it is quite manageable. There are several ways to do this kind of cleaning. For some, the battery must be removed, but sometimes you can do without it. In today’s article we will consider all the methods by which you can clean the inside of the radiator.

Causes and prevention of dirt

To begin with, let’s find out how inside the battery accumulates a large amount of dirt. After all, as you know, the problem is much easier to prevent than to solve. It would seem that in most cases ordinary water circulates through the heating system. Where does the dirt come from?? Actually, it’s just from the water.

How to remove the #stain from our cast iron skillet without using dishwashing liquid soap

First, you need to pay attention to the quality of the radiator itself. Many metals are known to rust in constant contact with water. For example, it is peculiar to the radiators made of low quality steel.

Rust adversely affects not only the walls of the heater, gradually thinning them. Its particles are carried with water throughout the heating system. They are deposited in the pipes, in other radiators, in the heating equipment, etc. д. This is the first cause of dirt.

Popular Methods

Since heating batteries can be quite different in their structure (from traditional cast iron “accordion” to bimetallic or aluminum, having external flat surfaces and a clever arrangement of slats inside), it is necessary to apply various tricks to remove dust and dirt between sections.

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Both mechanical and chemical means of action are suitable.


The easiest way is to use a vacuum cleaner with special narrow nozzles that can be slipped into the radiator compartments. This is especially effective if the radiator is cleaned every time you clean it, so it does not have time to accumulate more complex contaminants, in addition to dust. Civilized solution to the issue of cleaning the radiator is possible if you use a special brush designed for this purpose. It allows you to do both dry and wet cleaning of the battery.

A hair dryer can be used if there is a lot of dust. Put a wet cloth behind the radiator, preferably a cotton cloth (an old pillowcase or diaper will do) and blow through the radiator with a strong jet of air. This allows you to quickly get rid of dirt between sections, and the dust is not scattered throughout the room.

A thorough cleaning may require the use of boiling water. It is necessary to take a kettle with freshly boiled water, rags, a bucket and a tray (you can use a tray from the oven for this), then you should pour boiling water over the radiator. The water that has accumulated as a result of this procedure in the pan should be poured into a bucket, and from there into the toilet. It is better to wipe the battery itself with a sponge so that it does not have any drips.

Work with boiling water carefully so as not to burn your hands.

To wash the interior of the radiator you may need a paint brush or brushes with a curved pile and a long handle. Also you can use a simple narrow brush with a ruler attached to the handle with masking tape or duct tape. With such a simple device you can reach the most remote corners of the heater.

If you have a steam generator, it will wash away the dirt from the most uncomfortable places at the radiator, disinfecting the whole surface inside and outside. In the case of such a solution it is better to protect the floor and walls from moisture very carefully, otherwise you can damage the wallpaper and flooring.


To wash the radiator in the kitchen it is better to use household detergents, as ordinary water is not enough, since a specific greasy kitchen grime is very difficult to wash away. One can thoroughly spray the radiator with an appropriate composition from a spray gun and leave it to soak in. Dissolving a few drops of dishwashing liquid in the water is a good idea. It is better to put a rag under the device in advance, so that the liquid does not drip onto the floor. Then use a sponge or cloth to rinse away any fouling that has formed.

There is nothing complicated about how to clean cast iron radiators at home. The only thing that can be an obstacle is the weight of heating devices, which does not allow to carry out such work alone. Dismantling, vigorous shaking every 10-15 minutes while the radiator is filled with chemical solution and subsequent installation in place requires the presence of at least two workers. Otherwise, it is an uncomplicated process, which does not require special skills, but only tools and means for cleaning.

Experts recommend this kind of preventive maintenance of cast iron batteries every 3-4 years, then it will extend their life for decades. This applies to how to wash the old cast iron radiators, as well as their new counterparts.

To keep your home cozy and warm need to service communication in time, to carry out their preventive maintenance. Over many years of use of heating devices, their internal ducts slowly get clogged. This leads to poor heat dissipation and a longer heating time, so the room is almost always cold. To restore the normal functioning of the heating system it is necessary to clean cast iron radiators in time. In this article we will describe in detail the washing of radiators at home by traditional and popular methods.

Washing inside

The method of how to clean the deposit inside the radiator, choose, taking into account the type of radiator.

To flush a cast-iron radiator, apply:

Firstly, prepare a cleaning solution (dissolve a few tbsp. л. soda or essence). Using a funnel, pour the liquid solution into the bathtub. Both openings. inlet and outlet. close with plugs. Hands in gloves take the radiator, shake it intensively. Leave for an hour to allow the solution to dissolve rust and lime scale. Gently tap with a rubber mallet to break off large layers of plaque.

After the specified time, a flexible hose is put on the faucet, the other end is inserted into the inlet to the radiator, removing both plugs. Turn on the water at full power, wait a few minutes for the jet to wash dirt.

In particularly difficult cases, you can use aggressive compositions for cleaning pipes such as “Tiret” or “Mole”.

The method, how to wash aluminum heating batteries yourself, is almost the same as that used for cast iron products. For aluminum radiators use the same compositions and techniques, but it is desirable not to use too aggressive means. a fouling on the inner walls of the products made of this metal is formed much slower, and cleaning with citric or acetic acid is enough in most cases.

What to wash first?

Many people wonder if the battery should be cleaned from the outside first, or if it is better to clean it from the inside first? We advise to make a starter external cleaning: remove all dust from the radiator, and if it is in the kitchen, possibly a greasy film.

Special toothbrush

After you remove the radiator, you need to clean dirt and dust from the wall, floor, fasteners. everything that was hidden from you by the radiator. And after that with peace of mind go to the internal cleaning.

How to wash the batteries yourself

You will need tools for the removal and subsequent installation of batteries, a bathtub and old rags. The easiest and most reliable way:

  • Prepare the tub: cover the bottom and walls with a rag so that when you wash the radiator you do not damage the enamel. It is best to use a cast iron or steel bathtub. Acrylic can be hopelessly ruined. Protect the drain with a special grid, this will help avoid clogging the drain.
  • Dismantle the radiator and move it into the bathtub. Remove the faucet spout or put a hose on the faucet and under pressure flush the radiator. To get the dirt to flake off better the radiator must be periodically shaken and turned.
  • You must flush until there is clean water flowing from the radiator. If the clogs do not flush out, you need to clean the ducts with a long wire.

Cleaning cast iron radiators at home

If you know how to solve the problem, then everyone can do the preventive work. The main thing is not to flood your apartment, even more importantly. your neighbor’s apartment. Naturally, it is best to call a qualified plumber, but if you are armed with the necessary instructions on how to disassemble the sections, cleaning a cast iron radiator will not be difficult. Dismantling and cleaning multi-sectional radiators all by yourself is problematic, so in this situation you need a helper.

Important! Before you flush cast iron heating radiators at home, you need to make sure that the heating system in the apartment building is turned off, and its operation will definitely not be resumed during the cleaning procedures. In a detached house, there is no such problem, just need to know the weather forecast. You should not perform the cleaning in a cold season.

Is it possible to clean the radiator without dismantling

You can wash the radiator without disassembling it in a private home by cleaning the whole pipeline. It is necessary to shut off the steam line and let the water flow through the heating circuit until a clean liquid appears at the outlet.

Flushing the radiators in an apartment building without dismantling them is possible only in agreement with the other tenants and is carried out by the utilities using the hydro-pneumatic method. The system is fed with air-saturated water. The impact of micro-bubbles on the inner surface of the radiators leads to washout of contaminants.

It is better to seek the help of professionals who will qualitatively and accurately carry out all the necessary actions.

How to flush the radiator

This topic is quite debated, there are quite a few recommendations on how to flush cast iron heating radiators at home. It is possible to clean the rust from the battery with the application:

  • soda ash;
  • Car radiator flushing products;
  • milk whey;
  • vinegar essence;
  • citric acid;
  • Pepsi-Cola or Coca-Cola.

Battery flushing with a soda ash solution

How to wash cast iron heating batteries with soda ash? It is recommended to fill the device with hot water with the dissolved agent, install plugs, leave for an hour or two, periodically shaking the radiator. Then tap all sections of the radiator with a wooden hammer to disconnect rust adhering to the walls.

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If citric acid is used, there is no need to disassemble the radiator into sections. To do this, place the battery in such a way that the plugs remain at the bottom. Citric acid is added in the ratio of one dessert spoon per liter of water, heated to 95 ° C and poured into the battery. After some time the radiator is flushed with hot water under pressure.

The quality of battery cleaning can be judged by the clarity of water flowing out

The cleanliness of the batteries and their readiness for further operation is evidenced by the transparency of the water flowing out. The work is done, now you can install the radiators and check the quality of installation.

Tip! Before installing the battery, it is recommended to arrange one tricky device for the future. Its essence is to prevent rust from entering the radiator. The water contains dissolved oxygen which oxidises the pipe and leads to corrosion. To prevent rust from getting into the radiator, you can install an outlet with a stopper and a magnet from the outside in front of the radiator. Now the rust particles will be attracted to the magnet and remain in the outlet, which can be periodically cleaned by removing the plug.

Installing a drain with a stopper in front of the radiator

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