How to heat more efficiently? Get to know the radiator heater

Added: Monday, 8/28/2023


The radiator allows you to ensure the optimal temperature in the room, but sometimes special solutions will be needed. What is a radiator heater and how much can you save by using it? And how to choose the best heater? You will find out in this article!

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Check out radiator heaters at the Onninen wholesaler

What is a radiator heater?

Onnline 300W GRBT electric heater, 1/2" An electric heater is a special device that can be mounted next to a radiator. Even though it is most often installed in the bathroom, there is nothing stopping it from being installed in other rooms as well. The most important task of an electric heater is the ability to turn on a specific radiator whenever necessary. Also outside the heating season.

This is a big advantage - the heater allows you to turn on the radiator and heat the surface without having to run the entire installation. The shape of the radiator element resembles a heating rod. It is attached directly to the radiator, and when connected to 230V electricity, it allows you to heat the water in the radiator. An electric heater for a bathroom radiator is composed of a heating element that resembles a long rod, a heating medium, a temperature sensor, and a control knob.

An alternative is to use a control panel directly built into the housing. The heater must always be immersed in the so-called heating medium. It is mounted in the collector. When the radiator is heated, the heater will begin to rise, moving along the subsequent tubes. When it cools down, as a result of disconnecting the heater from the power source, it returns through a separate collector.

How much can you save with a radiator heater?

Heater for Terma TS 1 bathroom radiator One of the most important advantages of using a heater is the reduction of heating expenses. When it is necessary to heat a selected room (usually a bathroom) outside the heating season, there is no need to turn on the heating boiler. Although most heaters are controlled manually, it is increasingly possible to choose devices that are also remotely operated.

To accurately calculate the savings associated with using a heater for a radiator, we need several data, such as the power of the heater, the cost of electricity and the operating time of the heater. Let's compare the costs of heating with a heater to a 3.5 kW air conditioner consuming 1 kW of electricity for 8 hours a day for 200 days a year, where the heating cost is PLN 1,424 per year.

Let's assume that the radiator heater has a power of 600W and operates for the same 8 hours a day, 200 days a year:

Energy consumption:

  • 600W×8ℎ×200 days=960kWℎ

Energy cost:

  • 960kWℎ×PLN 0.89/kWℎ=PLN 854.4

So the savings compared to an air conditioner would be:

PLN 1,424 −PLN 854.4 = PLN 569.6 per year.

How to choose the power of the heater for the radiator?

The power of the heater should be matched to the efficiency of the radiator. Specialists emphasize that the maximum power of the heater should not be higher than approximately 70-80% than the power of the radiator. The radiator parameters are given in the form: temperature of water supplying the radiator/temperature of water leaving the radiator/air temperature in the heated room.

When selecting a heater for a radiator with parameters 75/65/20, the maximum set temperature cannot be higher than 60-65 degrees, and the heater's power should be close to the radiator's power. However, in the case of heaters with a self-regulating element, the power of the heater cannot be higher than the power of a radiator with parameters 75/65/20.

The necessary information is provided by the manufacturer in the specifications. You should look for operating parameters after connecting to the power supply. This applies to both the heater and the radiator. For effective operation, it is very important that the elements are compatible.

Heaters for bathroom radiators in the Onninen wholesaler

Currently, there are many models of heaters available, so it is important to pay attention to the parameters and choose the right product. The Onninen installation wholesaler offers proven solutions prepared by manufacturers specializing in the production of heating equipment. Noteworthy include, among others: electric heater for the Onnline GRBT 300W radiator , dedicated to installation on bathroom radiators. Available in 300, 600, 900 and 1200 W variants, equipped with a thermostat, so you can easily ensure the right temperature for bathing in the bathroom.

Terma KTX 1 bathroom radiator heater Another variant is the heater for the THERMA TS1 radiator from . The device can be installed both in bathroom radiators and in any other room. A big advantage is its great appearance, which will certainly be appreciated by people who care about harmony and modern design in their rooms. This type of solution allows for quick and efficient heating, so within a few minutes of turning on the heater you will feel a noticeable warmth in the room. High-quality materials used in the production of the device guarantee solid and durable workmanship.

Another solution worth considering is the heater for the THERMA KTX 1 radiator . It differs from previous models in, among others, construction. This type of heater is shaped like a cube. Equipped with microprocessor control, it allows for two-stage operation regulation, allowing you to set the temperature in the range of 30-60 degrees. A big advantage is the ability to set the heater's operating power to 50-100%. This model uses the separation of the heater controller and the heater heating element. Devices available in white, silver or chrome, with power of 200, 300, 400, 600, 800 or 1000W.

Check out radiator heaters at the Onninen wholesaler