Energy-efficient renovation?
Don’t do it by halves!
Lower energy costs. Greater well-being.
State-of-the-art radiators, radiant ceiling panels and ventilation systems from Zehnder – for effective energy-efficient renovation.
State-of-the-art radiators, radiant ceiling panels and ventilation systems from Zehnder – for effective energy-efficient renovation.
Buildings account for almost 40% of the EU’s total energy consumption. Yet this figure could be significantly lower. According to the European Commission, around 75% of all buildings are not energy-efficient and urgently need renovation if climate targets are to be met. Achieving true energy efficiency requires more than improving insulation or replacing windows. To reduce long-term costs, protect resources and increase property value, heating, cooling and ventilation must be considered from the very start of any renovation project. At Zehnder, we understand exactly what an energy-efficient renovation entails. As a trusted partner to architects, planners and specialist contractors, we not only offer expert technical support but also provide the latest generation of radiators, radiant ceiling panels and ventilation systems. The result is comprehensive renovation with sustainable impact and measurable energy savings.
The world must do more to protect the climate. We are playing our part with our resource-efficient technology. Discover Zehnder Nova Neo – our highly efficient, low-temperature radiator with a dust filter, cooling function and an integrated ...fan that delivers a much faster warm-up time.
Older heating systems consume far more energy and distribute heat unevenly because they were designed for a way of living that no longer reflects modern needs. And without suitable ventilation or cooling, homes are at real risk of overheating during the summer months. This can mean that the energy cost savings people expect from renovation work often never appear.
All of these issues can be avoided – with Zehnder. From energy-efficient radiators to radiant ceiling panels and ventilation systems, our solutions integrate seamlessly into a holistic, energy-efficient renovation strategy.
For efficient, sustainable heating, our radiators, radiant ceiling panels and ventilation systems help cut energy use, reduce carbon emissions and raise the long-term value of your property. Here are six reasons why upgrading your radiators is an important step towards making any building more energy-efficient.
Efficient radiators provide comfortable temperatures quickly and reliably. Their even heat distribution keeps your living space consistently warm – or allows different temperatures in individual rooms. For maximum comfort within your own four walls.
Our low-temperature radiators are the perfect partner for heat pumps. Together, they deliver heat where it’s needed, reduce energy consumption and cut heating bills. Smart controls also ensure the heat matches real-time demand.
Radiant heat means less air movement – and therefore less dust. This improves indoor air quality and, when combined with modern ventilation systems, helps reduce humidity. The result is a more comfortable environment and effective protection against mould.
With a wide range of installation and connection options, our radiators are straightforward to fit and adapt easily to different room sizes and layouts. A broad choice of designs also supports a functional, visually cohesive home interior.
Modern radiators are compatible with renewable energy systems and low-carbon technologies, helping to significantly reduce emissions. They also satisfy the requirements of current energy regulations and funding schemes – making them a genuine investment in the future.
Energy-efficient buildings rely on state-of-the-art radiators. They can improve a property’s energy performance certificate, which in turn boosts its market value. A strong advantage in a market where sustainability and reduced running costs are increasingly important.
Low energy use and lower running costs: heat generators play a central role in successful energy-efficient renovation. But to plan a truly holistic upgrade – and achieve meaningful reductions in heating costs – it is just as important to consider how heat is distributed throughout the building. With bathroom radiators, electric radiators, low-temperature radiators and advanced radiant ceiling panels, Zehnder provides a comprehensive range of solutions to suit every room type and design concept.
A larger heating surface and a reduced energy bill: low-temperature radiators are an especially smart choice when paired with efficient technologies such as heat pumps or modern condensing boilers. Operating at much lower flow temperatures than traditional radiators, they use considerably less energy while still offering fast, even heat distribution.
Discover our low-temperature radiators
Underfloor heating creates a pleasant temperature in the bathroom – but usually only during the main heating season. As a result, bathrooms can feel cool and damp in the months before and after. To keep the room comfortably warm, and to enjoy dry, cosy towels in spring and autumn, we recommend electric bathroom radiators. They provide direct, targeted heat whenever needed, completely independent of the central heating system.
More on bathroom radiators
Heating rooms with high ceilings doesn’t require excessive energy – it simply calls for a smarter approach. Radiant ceiling panels warm not just the air, but more importantly the surfaces within the room. This creates a comfortable indoor climate even at lower temperatures.
A further advantage is their position on the ceiling, which keeps walls free and allows far greater flexibility in interior design. When combined with modern heating systems or solar installations, radiant ceiling panels offer a sustainable and cost-effective alternative to traditional heating – and can also provide gentle cooling during the summer months.
Discover our radiant ceiling panels
Direct heat, exactly where and when it’s needed: once an energy-saving renovation has been completed, an electric radiator can provide valuable supplementary warmth in the months before and after the main heating season. By offering quick, targeted heating only when required, electric radiators help keep overall energy consumption to a minimum. The result is greater comfort and fast, flexible warmth whenever you need.
More on electric radiators
A larger heating surface and a reduced energy bill: low-temperature radiators are an especially smart choice when paired with efficient technologies such as heat pumps or modern condensing boilers. Operating at much lower flow temperatures than traditional radiators, they use considerably less energy while still offering fast, even heat distribution.
Discover our low-temperature radiators
Underfloor heating creates a pleasant temperature in the bathroom – but usually only during the main heating season. As a result, bathrooms can feel cool and damp in the months before and after. To keep the room comfortably warm, and to enjoy dry, cosy towels in spring and autumn, we recommend electric bathroom radiators. They provide direct, targeted heat whenever needed, completely independent of the central heating system.
More on bathroom radiators
Heating rooms with high ceilings doesn’t require excessive energy – it simply calls for a smarter approach. Radiant ceiling panels warm not just the air, but more importantly the surfaces within the room. This creates a comfortable indoor climate even at lower temperatures.
A further advantage is their position on the ceiling, which keeps walls free and allows far greater flexibility in interior design. When combined with modern heating systems or solar installations, radiant ceiling panels offer a sustainable and cost-effective alternative to traditional heating – and can also provide gentle cooling during the summer months.
Discover our radiant ceiling panels
Direct heat, exactly where and when it’s needed: once an energy-saving renovation has been completed, an electric radiator can provide valuable supplementary warmth in the months before and after the main heating season. By offering quick, targeted heating only when required, electric radiators help keep overall energy consumption to a minimum. The result is greater comfort and fast, flexible warmth whenever you need.
More on electric radiators
Ventilation systems with heat recovery are a smart way to improve air quality while reducing energy use. By recovering heat or coolness from the extracted air and pre-conditioning the incoming fresh air, they can cut heating and cooling demand by up to 90%. When combined with a heat pump or a well-insulated building, they make a significant contribution to overall energy efficiency and living comfort.
The Zehnder ComfoClime unit provides a continuous supply of pre-tempered, dehumidified fresh air. Designed as an additional module for the Zehnder ComfoAir Q ventilation system, this energy-efficient, demand-controlled solution helps maintain comfortable temperatures throughout the home, during cold winters and hot summers. It also actively dehumidifies indoor air, offering extra protection against mould.
Energy-efficient renovation improves a building’s overall energy efficiency. This includes reducing heat loss, upgrading heating and ventilation systems, and lowering energy consumption. The goal is to cut costs and carbon emissions over the long term while enhancing comfort and health for the people living in the building.
It’s important to view the building as an integrated system. Insulating façades and upgrading windows are only part of the solution – the heating system, ventilation and heat distribution must also work effectively together. A more airtight building will need comfortable indoor ventilation to avoid moisture build-up and stale air. Heating technology is just as crucial: heat generators and heat distribution systems should be well matched to maximise efficiency, reduce costs, maintain a pleasant indoor climate and protect the building fabric.
Efficient heat distribution saves energy and significantly improves comfort. Hydraulic balancing is key, ensuring each radiator receives the correct water flow. Well-insulated pipes prevent heat loss, and needs-based controls ensure heating is only used when required.
Modern low-temperature radiators further increase efficiency and reduce running costs. Ventilation systems with pre-tempering – such as the Zehnder ComfoClime Cool cooling unit – also distribute air evenly and support optimal heat transfer, helping maintain comfortable temperatures throughout the home.
A full replacement may be more cost-effective if pipework is old, poorly insulated or incorrectly sized. This is especially relevant when switching to low-temperature systems like heat pumps. Re-designing the distribution network ensures maximum performance and efficiency.
Ventilation should also be considered at the same time – energy efficiency is only achieved when both systems work together seamlessly.
In many cases, existing radiators can remain in use if they are compatible with the new heating system. However, older radiators may not perform well with low-temperature systems such as heat pumps. Replacing them with larger or modern panel radiators can help achieve the required heat output. Radiant ceiling panels are another efficient alternative, particularly in large spaces or rooms with limited wall space.
Key considerations include room height, how the space is used (e.g. office, workshop or warehouse), ceiling construction and appropriate control technology. Accurate thermal calculations are essential to ensure that output and heat distribution are perfectly matched. More detailed guidance and planning tips can be found here.
Comfortable indoor ventilation is particularly beneficial in modernised or renovated buildings that have become more airtight. It provides a continuous supply of fresh air, prevents moisture and mould, and helps heating systems operate efficiently.
Heat recovery systems and combined solutions, such as ventilation heat pumps, are highly effective. They provide controlled air exchange while also supporting the building’s heating needs.
The essential steps include an accurate heating load calculation, developing a holistic energy concept, carrying out full hydraulic balancing and coordinating heating, ventilation, insulation and control technology. All of these elements must work together to achieve lasting efficiency.
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Expert technical advice.
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Radiators
Radiant ceiling panels
Comfortable indoor ventilation
Contact details:
Zehnder field sales
Technical consulting
Planning and design
Direct links to main topics:
Radiators
Radiant ceiling panels
Ventilation systems
I would like ...
To find a specialist provider near me.
Expert technical advice.
I need more information on ...
Radiators
Radiant ceiling panels
Comfortable indoor ventilation
Contact details:
Zehnder field sales
Technical consulting
Planning and design
Direct links to main topics:
Radiators
Radiant ceiling panels
Ventilation systems
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