Hydronic heating

Hydronic heating is a heating form that heats houses and properties using heated water which circulates in a closed pipe system for radiators or underfloor heating. Oil or wood boilers, district heat exchanger, geothermal heat can all serve as heat sources for the hydronic heating. The heat source for heating the water can be changed as desired and which best suits the housing in question. The form of heating therefore has its advantage of being an environmentally sound energy system, but where the installation cost is slightly higher than for e.g. direct-acting electric heating.

Switching to hydronic heating

By converting to hydronic heating, that is, a hydronic heating system with heat pump, you get up to three times lower energy cost. This is definitely not the only positive, but there are also a host of other benefits of heat from hyndronic radiators. Below you will find several posts that deal with hydronic heating in renovation, interior decoration and a variety of other contexts.
Flushing hydronic heating underfloor heating maintenance

Underfloor heating maintenance: a step-by-step guide to flushing the system

In this article we’ll discuss the significance of underfloor heating maintenance and take you through the underfloor heating flushing process step by step.

Work smarter
Underfloor heating
Hydronic heating
Combining underfloor heating and radiators

Harmonizing heat: a guide to combining underfloor heating and radiators

In this guide, we’ll take a closer look at how to design, install, and maintain systems that combine underfloor heating and radiators in new and renovated buildings.

Hydronic heating
Energy saving
Radiators
Underfloor heating
2025 HVAC trends

HVAC trends in 2025: staying ahead in a transforming industry

In this article, we’ll explore the top HVAC trends shaping the industry in 2025 and provide insights on how professionals can adapt to stay competitive in this dynamic landscape.

News
Energy saving
Hydronic heating
Electrical heating
Magnetite in radiators of hydronic heating systems

Understanding magnetite in hydronic heating systems: 5 FAQs answered

Although magnetite is not a new phenomenon, we find that our customers still often have questions about it. We are therefore happy to dive into the subject and answer 5 of the most frequently asked questions about magnetite in hydronic heating systems.

Radiators
Hydronic heating
Improve efficiency
Calculation & design for underfloor heating systems

Understanding the data requirements for underfloor heating design and calculation

A well-designed underfloor heating system can contribute significantly to the creation of sustainable indoor climate comfort, provided it’s carefully planned first.

Underfloor heating
Hydronic heating
Sizing of products
Pipe sizes and flow velocity in low temperature heating systems

Enhancing efficiency: the importance of pipe sizes and flow velocity when switching to low temperature heating

With this roadmap for setting up a low temperature heating system in an existing building, we underline the importance of pipe sizes and help you to ensure that all components are optimally matched.

Better integration
Hydronic heating
Radiators
WZC Aan de Schelde

41 km Purmo heating pipes in conversion of old steel factory site into residential care centre

Our heating and cooling solutions, including our Clickjet W underfloor heating system, PE-RT Penta heating pipes, and Integra Flex 8C panel radiators have been selected to create indoor climate comfort in all residential units.

Improve efficiency
Hydronic heating
Underfloor heating
References
A comprehensive comparison: panel radiators, fan-assisted radiators, and fan coil units explained

A comprehensive comparison: panel radiators, fan-assisted radiators, and fan coil units explained

Uncover the differences between panel radiators, fan-assisted radiators, and fan coil units. Our guide helps you choose the ideal emitters for your project.

Work smarter
Improve efficiency
Hydronic heating
Radiators
Purmo underfloor heating manifold with flow meters

The essential role of underfloor heating manifolds and flow meters in achieving a balanced system

The manifold(s) and flow meters should certainly not be forgotten as they play an essential role in regulating water distribution and flow rates and ensuring a smooth operation of the entire system.

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Underfloor heating
Hydronic heating
Unisenza Plus smart underfloor heating controls

The why, how and what of smart underfloor heating controls

Let’s take a look at why smart underfloor heating controls are so important to create future-proof HVAC systems and what added value they bring.

Work smarter
Better integration
Hydronic heating
Product info
Underfloor heating
Coloured Delta column radiators Purmo in reference project Barault Architects

Coloured radiators join efficiency and aesthetics in renovation Greek apartment

Our coloured column radiators were integrated in a completely refurbished interior. This allowed for a classic design with a modern twist to be seamlessly combined with an energy-efficient HVAC installation.

Hydronic heating
References
Renovation
Radiators
installing a fan coil unit key features to keep in mind - iVector S2 Purmo

3 key features to keep in mind when installing a fan coil unit

Discover key factors to keep in mind when setting up a fan coil unit. Learn about essential features for efficient installation in our blog article.

Better integration
Work smarter
Hydronic heating
Product info
Radiators
Reduce footprint

Selecting the best radiators for every application: a complete checklist

Find the best radiators for any space with our comprehensive checklist. Explore top options for all applications and make the best choice.

Renovation
Radiators
Sizing of products
Electrical heating
Hydronic heating