Featured posts

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  Gas R12 – one of the oldest refrigerants and the first Freon

  Posted in: Refrigerants and heat exchangers for gas, Heat pumps and all aspects of their operation

  2589 Views 1 Liked

  The progenitor, even the father of all Freons, and one of the first refrigerants used in heat pumps. Discovered in 1928, it completely dominated the market. What did its peak look like, and why was it phased out? Was it efficient? What replaced it?

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  Independent ranking of gas boilers 2025

  Posted in: Central heating boilers and everything related to them

  1452 Views 2 Liked

  Ranking of the best gas boilers for 2025 – created by completely independent individuals, not involved in production, advertising, or distribution of condensing boilers. Check out the top choices this year and make a smart decision.

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  Safety group – what is it?

  Posted in: Others, Central heating boilers and everything related to them

  428 Views 1 Liked

  What is a safety group in central heating or domestic hot water systems – its role, operation, and components. Comprehensive and practical knowledge.

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  Heat exchanger for district heating: How to choose?

  Posted in: Heat exchangers and everything related to them

  815 Views 2 Liked

  All practical information about connecting a house to the district heating network via a plate heat exchanger. How to choose the right heat exchanger for heating from the district heating plant? What to pay attention to?

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  Heat Pump Condenser: A Key Component of the System

  Posted in: Refrigerants and heat exchangers for gas, Heat pumps and all aspects of their operation

  595 Views 2 Liked

  Find out what the condenser in a heat pump is used for and why it is important. Without understanding how the condenser works, you won’t fully grasp how a heat pump operates – check it out, we invite you.

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  Heat Pump Ranking 2025: Best Models and Key Selection Criteria

  Posted in: Heat pumps and all aspects of their operation

  2616 Views 3 Liked

  Choosing the right heat pump nowadays can be quite a challenge. This decision requires careful consideration. That’s why a heat pump ranking can be an extremely helpful source of information. It not only features the best models available on the market but also highlights the key criteria worth considering when making a decision.

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  Heat Pump Defrost: The Key to Efficient Operation

  Posted in: Heat pumps and all aspects of their operation

  652 Views 2 Liked

  Everything You Need to Know About Defrosting. What It Is, How the Defrost Process Works, and Why It’s So Important. All the essential information—explained in a simple way.

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  R290 Heat Pumps: Eco-Friendly and Efficient Heating Solution

  Posted in: Refrigerants and heat exchangers for gas, Heat pumps and all aspects of their operation

  570 Views 1 Liked

  When ecology is a priority, R290 heat pumps are being promoted. They are becoming trendy and are increasingly chosen for home heating. What do they offer? Besides ecology, is this choice justified? In short, is it cost-effective and does it have any market advantages, or are we simply paying extra for ecology and climate protection?

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  R134a: Everything About the Popular Refrigerant

  Posted in: Refrigerants and heat exchangers for gas, Heat pumps and all aspects of their operation

  830 Views 1 Liked

  The most important information—everything you need to know about R134a, once the most popular and still widely used refrigerant. Many heat pumps still operate with this gas today—what does the future hold for it?

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  Is underfloor heating healthy?

  Posted in: Underfloor heating and everything about its operation, Others

  440 Views 2 Liked

  Underfloor heating, a heating system installed beneath the floor surface, is gaining increasing popularity in modern construction. Why? This solution not only provides comfortable warmth but also stands out for its energy efficiency. Moreover, it can offer health benefits—especially for people struggling with allergies or circulation issues.

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  UV Sterilizers and Lamps for Aquariums: A Comprehensive Guide

  Posted in: Water filtration and purification - CH, DHW, drinking water

  665 Views 2 Liked

  Aquaristics is not just about breathtaking views but also comes with many responsibilities. If you want a clean and healthy aquarium, a UV sterilizer can be an indispensable support. This innovative device uses UV-C radiation to effectively eliminate unwanted intruders such as bacteria, viruses, and algae. As a result, the water in your aquarium becomes not only crystal clear but also safe for fish and plants.

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  The Expansion Valve in a Heat Pump

  Posted in: Refrigerants and heat exchangers for gas, Heat pumps and all aspects of their operation

  1152 Views 2 Liked

  The expansion valve, along with the condenser and evaporator, is one of the key components of the working cycle of a heat pump. Without it, one of the phases of the heat pump’s operation would essentially be ineffective. Learn how the expansion valve works and what its purpose is, which will help you understand the general principle of how a heat pump operates.

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  The History of District Heating and Urban Networks

  Posted in: Others

  847 Views 1 Liked

  The history of district heating is a fascinating tale of how technology has transformed our daily lives over the centuries. From the earliest attempts to bring warmth into homes in ancient civilizations, through groundbreaking inventions of the Middle Ages, to modern, advanced systems – this evolution reflects not only technological progress but also the changing needs and challenges of societies. It is a story full of innovations that have shaped both our homes and entire cities.

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  Connecting a Fireplace to a Sealed System via a Plate Heat Exchanger

  Posted in: Heat exchangers and everything related to them, Others

  912 Views 2 Liked

  Connecting a fireplace to a closed system using a heat exchanger is a solution that is gaining increasing popularity in modern heating systems. It combines efficiency, safety, and user convenience. Contemporary fireplaces are increasingly becoming the centerpiece of home heating systems, with their integration into open systems becoming almost a standard. Such an installation not only boosts energy efficiency but also minimizes the risk of overheating or system failure. Sounds promising,...

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  Open Expansion Tank: A Comprehensive Guide

  Posted in: Central heating boilers and everything related to them

  1488 Views 1 Liked

  In today's world, energy efficiency and the safety of heating systems remain top priorities. But do you know how crucial a role an open expansion tank plays? This unassuming device, though small, serves a vital function in heating systems. It protects the system from dangerous pressure increases that can occur when water reaches excessively high temperatures or starts to boil. Simple yet indispensable.

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  Legionella in Water: Risks, Prevention, and Control | BLOG Nordic Tec

  Posted in: Water filtration and purification - CH, DHW, drinking water

  600 Views 1 Liked

  Legionella in water is a topic of growing importance, particularly in the context of public health. This bacterium, naturally found in aquatic environments, can pose a serious threat in places such as hospitals, hotels, or nursing homes, where water is extensively used or stored. Understanding the conditions that promote the growth of Legionella and implementing measures to effectively limit its spread are crucial. It is not only a matter of knowledge but also of responsibility.

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  Installing Underfloor Heating: A Comprehensive Guide

  Posted in: Underfloor heating and everything about its operation

  874 Views 2 Liked

  Installing Underfloor Heating. In this guide, you will learn what makes underfloor heating increasingly popular and how to carry out its installation step by step to avoid potential issues.

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  How to protect a heat pump from an old central heating system?

  Posted in: Heat pumps and all aspects of their operation

  712 Views 2 Liked

  Are you planning to install a heat pump in a house with an old heating system? How can you protect the heat pump from the damaging effects of an open system? Read about how heat pumps are practically separated from old installations using plate heat exchangers.

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