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How to Maintain Your Heating System

Regular and thorough maintenance of your heating system will ensure economical and trouble-free operation and extend the lifespan of your heating. All components of the heating system require maintenance, not just the boiler and the radiators themselves. In this article, you will learn what to focus on when checking pumps, thermostats, and valves.

Electronic Circulation Pumps for Heating

Circulation pumps are an integral part of all water heating systems. They ensure the circulation of hot water between the boiler and radiators, or underfloor heating. This allows for efficient heat distribution throughout the house. If you have an older three-speed model, consider acquiring an electronic pump before the heating season begins. Why?

Modern electronic circulation pumps from Grundfos and Wilo offer several advantages over old three-speed models, primarily automatic performance regulation based on current needs. This significantly reduces energy consumption, increases the efficiency of heat transfer fluid distribution even to the most distant parts of the house, and reduces system noise. Compared to older models of circulation pumps, with the most modern ones, you can save up to 80% of energy, so your investment will quickly pay off.

Maintenance of Electronic Circulation Pumps for Heating

Visually inspect electronic pumps before the heating season. Look for signs of corrosion, leaking joints, or mechanical damage, and check cables and seals. After starting, listen to see if the pump is noisy. A quiet hum is normal, but knocking or whistling from the pump can be a warning sign.

  • Also check parameters such as flow and pressure. The circulation pump also needs to be bled. The self-diagnosis will alert you to any faults.

Thermostats

Maintenance and setting of thermostats before the heating season vary according to their type. Mechanical thermostats, which are controlled by a dial or buttons, do not require any pre-setting or checking. These thermostats have a simple construction, but on the other hand, they offer less precise temperature regulation and are not programmable.

Much higher savings and a better user experience are offered by digital programmable thermostats. In addition to more precise regulation, they have daily and weekly modes, allowing you to pre-set the desired temperature in individual rooms. The thermostat then maintains this automatically, but you can easily change the settings at any time.

Smart WiFi thermostats represent the top of the market. In addition to all the advantages of programmable thermostats, they can also be controlled remotely via a mobile app or voice assistants. You can also use smart features to optimize heating operation.

Programmable Thermostat Siemens

Thermostat Settings

Thermostats themselves do not require maintenance, just check their functionality. However, programmable thermostats need to be set for individual zones and times. When you are at home, typically between 6:00-8:00 and 16:00-22:00, the recommended temperatures are as follows:

  • Living room and children's rooms: 20-22 °C
  • Bedroom and kitchen: 18-20 °C
  • Bathroom: 22-24 °C
  • Hallways, utility room: 15-17 °C

At night, between 22:00 and 6:00, you can lower the temperature by 2 degrees, except in the bedroom. When you are absent, lower the temperature throughout the house. Each degree saves about 7% of energy, but that doesn't mean you should turn off the heating completely. Reheating and warming up a cooled house is much more energy-intensive.

With such a set time program, you will never overheat again, but you will increase thermal comfort – you will have the ideal room temperature at home even before waking up or returning from work. You won't have to think about heating regulation at all.

Checking and Maintaining Heating Valves

Heating systems include thermostatic and mixing valves. Water valves adjust the amount of water flowing through, and three-way valves also serve to mix hot and cold water, thus regulating the output water temperature and protecting the boiler. Once a year, clean the valves, check their mobility and seals. If a mechanical impurity filter is installed before the valve, clean the filter screen.

The thermostatic valve can also seize in the closed position, almost preventing heating water from entering the radiator. This happens mainly because people tend to close the thermostatic heads after the heating season. However, the heads should remain open to the maximum to prevent this fault. How to deal with a stuck valve? If the valve spindle can be gripped with pliers, try to move it this way. If it is completely stuck, you can try to release it by pressing, but often a valve replacement is necessary.

Bleeding and Balancing the Heating System

An unbalanced and unbled heating system heats inefficiently, unevenly, is noisy, and consumes unnecessarily too much energy.

While you can manage bleeding yourself using bleed valves, balancing is a relatively complex task requiring precise calculations, and therefore belongs in the hands of professionals. However, if you have a Grundfos circulation pump with an automatic balancing function, you have one less worry – this revolutionary function handles balancing entirely on its own, you only need a communication module and a mobile app. In the app, you fill in the required parameters and start balancing.

Grundfos Circulation Pump with Automatic System Balancing Function

Check Heating Even During the Heating Season

The best prevention is regular maintenance. To prevent your heating from failing suddenly, inspect it carefully and look for possible faults. This will prevent costly repairs, which you will likely have to wait for during the heating season. Focus on checking the tightness, noise, and functionality of all components and keep accessible parts clean. If you detect any water leaks, replace the seals.

Once a year, it is advisable to have the heating system checked by professionals who can detect even hidden faults.

Suitable Electronic Circulation Pumps