Renovating your bathroom?

Don’t do it
by halves!

Bathroom Renovation with Zehnder

Renovate once. 
For lasting comfort.

Stylish designer radiators for a modern, inviting bathroom.

Bathroom renovation: comfort begins with warmth

Millions of bathrooms in Europe are in urgent need of renovation. Millions of bathrooms across Europe are in urgent need of renovation. In many cases, they haven’t been modernised for decades and are outdated in terms of both design and technology. This is surprising given that the bathroom is where people begin and end their day - and where they spend between 30 and 70 minutes each day, even longer at weekends. Perhaps that makes now the perfect time to start planning a bathroom renovation and create a true spa‑like oasis.
 
It’s not just fixtures and fittings that contribute to comfort, energy efficiency and air quality. Radiators and ventilation solutions also play a vital role. As a trusted partner to specifiers, planners and architects, we understand exactly what’s required to deliver a professional bathroom renovation that maximises comfort and performance.

40 %

of all European buildings were constructed before 1970 and are now in great need of modernisation.

Source

40% of all buildings were constructed before 1970

€20 billion

a year is already being invested in bathroom modernisation in Germany.

Source

30 billion Euros are invested in bathroom modernisation

By 2032 ...

... annual investment in bathroom renovations is expected to rise to around €47 billion.

Source

By 2032 he amount of money invested in bathroom renovations each year will  have increased to an estimated €47 billion
Renovation of bathrooms inculdes radiators

Goodbye old radiators. 
Hello everyday comfort.

Why do so many people never think of renovating their bathrooms? Millions of people have never updated their bathrooms since moving into their house or flat. Across Europe, many bathrooms have remained unchanged for more than 20 years, leaving them technically outdated. Yet investing in a more comfortable, modern bathroom is well worth it, and far easier than you might imagine.

It’s time to stop putting it off. There’s a simple way to enhance bathroom comfort that suits every space, every budget and every stage of life. An electric radiator can quickly warm a small room during busy family routines, and dry all the towels at the same time. A stylish designer radiator can also transform the look and feel of a bathroom. And for older people who have lived in their homes for decades, the ability to adjust the temperature easily - for example at the touch of a button - brings welcome comfort, constant warmth and a pleasant indoor climate.
 
Whatever type of designer radiator suits the bathroom best, electric, hot water or dual‑fuel, Zehnder offers a wide selection of stylish models, many of which have received prestigious design awards. We would be happy to advise you on the options available for your next renovation project, always keeping the needs of your target audience in mind.

Expert knowledge for your bathroom renovation
Download our free practical guide to bathroom renovation today! Our experts have gathered everything you need to know about Zehnder designer radiators and ventilation solutions in one clear, easy‑to‑read white paper.
Bathroom renoation whitepaper

Not just a bathroom.

But a place of well-being.

Imagine your bathroom became your favorite place to unwind. Zehnder designer radiators help make this possible by providing dependable warmth, a healthy indoor climate and reducing everyday moisture build-up. As well as being stylish and energy‑efficient, they are also easier to install than you might expect.

Six advantages to having energy-efficient radiators in a bathroom

Fast heating.

High comfort.

The even heat distribution creates a pleasant, consistent temperature throughout the bathroom. When used alongside underfloor heating, electric radiators offer a quick and effective way to achieve comfortable warmth – especially during the colder winter months.  

Efficient heating. 
Energy conscious.

In many homes, the bathroom only needs heating when it’s actually in use. Whether low‑temperature or electric, our Zehnder radiators are designed to be highly energy‑efficient. This reduces both environmental impact and running costs.

energy-efficient, resource-saving, in harmony with environment, world, earth, globe, planet, energy, efficient, resources, created by DOTS

High air quality. 
Helping prevent mould & condensation.

Modern radiators help reduce the discomfort caused by high humidity and unpleasant odours. Their radiant heat dries walls and surfaces more quickly, while minimising draughts so dust and mould spores are less likely to be disturbed into the air.

Easy to install. 

Easy to integrate.

Plug‑and‑play or fixed installation?
With a wide choice of installation and connection options, our Zehnder designer radiators are highly compatible and very straightforward to fit. And with an extensive range of designs, there’s a perfect model for every bathroom

Sustainable heating. 
Lasting benefits.

A long‑lasting investment in the future:
Modern radiators help lower carbon emissions and reduce heating costs in the long term. They meet the requirements of current energy regulations and funding programmes, and can also be paired with renewable energy systems.

Easy to operate. 

Even from a distance.

Our Zehnder designer radiators are simple to use, thanks to intuitive controls and smart technology that takes care of many functions automatically. And with our remote‑control models, you can adjust settings at the touch of a button.

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Designer radiators to suit any heating system

Electric, hot water or dual‑fuel?
At Zehnder, you’ll find designer radiators to suit any bathroom renovation, both aesthetically and technically. From the contemporary look of the Zehnder Tetris to standout models like Zehnder Archibald or Zehnder Arteplano from the Zehnder Studio Collection, there’s a wide range of designs to explore.

Start your bathroom renovation. With an added bonus.

There has never been a better time to renovate your bathroom with Zehnder designer radiators. Selected models now come with an added bonus. Until 31 December 2026, you can enjoy a free colour upgrade on qualifying bathroom radiators, or receive a free Easy remote control with the purchase of an eligible electric bathroom radiator and IHC immersion heating element.

The experts in bathroom renovation
Complete refurbishment or small‑scale upgrade? Whatever size bathroom project you’re planning, our experts are here to help.
We offer specialist advice on heating and ventilation solutions for bathrooms of every type and size, whether it’s a quick refresh or a more complex renovation involving adjoining rooms or technologies such as heat pumps. Speak to us for tailored, one‑to‑one guidance.
A two-part image showing an old bathroom with patterned tiles on the left and a modern, bright bathroom with a white bathtub on the right, in which an adult is playing with two children.

How ventilation systems help 
to prevent mould

Even a single shower can release one to two litres of moisture into the air. If this moisture lingers, it creates ideal conditions for mould growth. That’s why rapid drying after showering is so important. Simply opening the window often isn’t enough, as humidity levels can remain too high for hours at a time.
 
If relative humidity stays below 80% for around half of the time, this is usually sufficient to prevent mould from forming. While modern bathroom radiators help by improving heat distribution, ventilation systems are especially effective. Their built‑in sensors detect rising humidity and work to keep it below critical levels. Mechanical ventilation units can typically reduce humidity within 15 to 30 minutes after a shower. This helps protect bathroom walls, surfaces and fittings, while keeping indoor air quality consistently high

Explore our ventilation systems

Bathroom renovation: your questions answered

Electric radiators heat up quickly and are ideal for retrofitting. They can be used to supplement underfloor heating and are well suited to short periods of use, such as before or after the main heating season. Hot‑water radiators integrate seamlessly into central heating systems and can offer lower running costs when paired with energy‑efficient heat sources (e.g. gas boilers or heat pumps).

Water‑based radiators integrate seamlessly into central heating systems and can offer lower running costs when paired with energy‑efficient heat sources (e.g. gas boilers or heat pumps). However, they do require hydraulic balancing during installation. Electric radiators, on the other hand, are more flexible to retrofit, for example alongside underfloor heating, and are ideal for short periods of use, such as before or after the main heating season.

Hot‑water towel radiators connect directly to the central heating system. Mixed‑operation models combine this with an electric heating element, allowing year‑round use even when the main heating is off. For renovation projects, it’s advisable to plan for middle connections and check pressure losses. Electric radiators are the easiest to integrate, as they can be installed almost anywhere with access to a suitable power supply. Zehnder designer radiators also allow multiple towels to be warmed at the same time.

DIN 18017‑3 recommends an extract airflow of at least 60 m³/h for bathrooms and 40 m³/h for WCs. In some cases, WC ventilation can be reduced to around 30 m³/h. However, it is essential that sufficient fresh air can enter the room through door gaps or dedicated ventilation openings to prevent excess moisture and the formation of mould.

Efficient extraction, for example using units with run‑on timers or humidity sensors, helps reduce bathroom humidity to below 80% after showering and supports faster drying of walls and surfaces. In combination with heat recovery, this helps keep moisture under control. Bathrooms benefit from this especially in renovated, well‑insulated homes.

In Germany, financial support for upgrading bathroom radiators and ventilation systems is available through the Federal Funding for Efficient Buildings (BEG), for example via the Federal Office for Economic Affairs and Export Control (BAFA). Depending on the specific renovation project, funding can reach up to around 70%, with a basic subsidy of approximately 15–20% plus additional bonus allowances for higher energy‑efficiency measures. In most cases, hydraulic balancing is required to qualify.

Four steps to bathroom renovation with Zehnder

Effective renovation with Zehnder

Perfecting your next bathroom renovation together

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

Everything a
professional needs.

Contact details:
Zehnder field sales
Technical consulting
Planning and design

Direct links to main topics:
Radiators
Radiant ceiling panels
Ventilation systems

Perfecting your next bathroom renovation together

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

Everything a
professional needs.

Contact details:
Zehnder field sales
Technical consulting
Planning and design

Direct links to main topics:
Radiators
Radiant ceiling panels
Ventilation systems