The heating system is a closed system in which water heated by the heat generator circulates. In practice, however, air can still enter the system, for example through diffusion or when working with the heat generator. This creates air bubbles that prevent even heat distribution in the radiator. This often produces strange or annoying noises. If this happens, the radiator must be bled.

Bleeding radiators not only reduces heating costs, but proper ventilation is also one of the most effective ways to save energy. Important: when ventilating, windows should be fully opened for a short time (about 5 minutes), not left half-open. Half-open windows let in little fresh air but let out a lot of heat. During ventilation it is recommended to reduce heating. If possible, repeat this process up to three times a day. Depending on the season, ventilation can last longer than 5 minutes.

The perception of warmth is always subjective. Some people like it very warm, others a little cooler. However, it is clear that not all rooms in a house or apartment need to have the same temperature. After all, rooms are used differently and are also heated indirectly, for example by people present or operating electrical devices.

Pay attention to the following temperatures:

Playroom, office and living room: 20–22 °C, kitchen and bedroom: about 18 °C, hallway: 15 °C. The importance of the correct room temperature is shown by the potential savings: lowering the room temperature by just one degree Celsius reduces heating costs by up to six percent – at least in older buildings. In new buildings, savings may be smaller.

Radiators in buildings often do not heat evenly. The greater the distance from the heat generator or the thinner the heating pipes, the greater the resistance to flowing water. This means that not all rooms receive the same amount of water and radiators heat at different temperatures. To heat all rooms to the desired temperature, more energy is required. Hydraulic balancing is necessary to ensure that each radiator receives exactly as much heat as needed. Independent studies show that hydraulic balancing increases energy efficiency by up to 15 percent. This not only saves energy but also reduces heating costs.

Regular heating maintenance extends the service life of the heating system and ensures safe and trouble-free operation. This is the only way to guarantee efficient and low-emission energy consumption. It protects the environment and saves heating costs while maintaining consistently high heating and hot water comfort. The boiler, burner and control system form a system similar to a car engine. If your car worked as many hours as your boiler, it would cover 100,000 km per year. Every car owner is obliged to carry out regular maintenance. Therefore, your heating system, like your car, must be serviced at least once a year.

Tight seals around windows and doors are essential for efficient heating. Seals should be checked before the heating season and replaced if necessary.

Insulating heating pipes is simple, requires reasonable effort and is inexpensive. It can also save energy.

Regularly check the operation of thermostatic valves. A stuck thermostat reduces heating performance. To save energy, this must be corrected.

Combine all these measures to minimize heating costs. In addition to the three tips already described, there are other useful measures that can be quickly implemented and have significant energy saving potential: radiator temperature should only be lowered at night, not turned off completely, so that the room does not cool down completely. Reheating a cooled room requires greater water flow, which increases energy consumption. Curtains in front of radiators or furniture placed nearby prevent heat circulation. The radiator cannot reach full capacity and must heat more to maintain the desired room temperature. Therefore clean radiators. At night, curtains, blinds and shutters should be closed. This reduces heat loss and protects against cold and drafts.