what is radiant heating cooling system

What is a Radiant Heating and Radiant Cooling System?

In today’s quest for energy-efficient home solutions, radiant heating and cooling systems stand out as exemplary choices. Thse systems not only offer superior comfort but also significant energy savings compared to traditional methods. This blog explores what is radiant heating and cooling system, how it works, and why REHAU’s solutions might be just what you're looking for.

Understanding Radiant Heating

Let’s explore now what does radiant heating or radiant heat means, Radiant heating is a method of environmental control that delivers heat directly from the surfaces of a room—be it floors, walls, or ceilings. Unlike traditional heating, which primarily uses air circulation, radiant heating transfers heat directly to objects and people, providing a uniform warmth without the noise and drafts associated with forced air systems.

Benefits of radiant heating include a more consistent room temperature, lower thermostat settings due to efficient heat distribution, and reduced dust circulation. This makes it not only comfortable but healthier.
REHAU’s Radiant Heating Technology uses RAUTHERM S pipes and PRO-BALANCE® manifolds to create a highly efficient heating system. Their systems can be tailored for various residential and commercial applications, ensuring optimal warmth with minimal energy use.

Exploring Radiant Cooling

Just as radiant heating warms, a radiant cooling system cools by absorbing heat from a room. The technology utilises chilled surfaces—again, floors, walls, or ceilings—to remove heat through radiation and convection, creating a comfortably cool environment without the uneven temperatures of conventional air conditioning.

Advantages of radiant cooling include reduced energy consumption as the cooling system operates with moderate water temperatures, less air movement, which minimises the spread of dust and allergens, and a quiet operation devoid of the hum and whirr of traditional systems.
REHAU’s Radiant Cooling Solutions are designed to integrate seamlessly with their heating systems, providing consistent and efficient temperature control. Their systems use RAUTHERM S pipes to circulate chilled water, ensuring that every corner of the space reaches a comfortable temperature.

A German Brand with a Global Presence

REHAU is a German innovation leader with a robust global presence, delivering top-tier radiant heating and cooling solutions across the world, including India. Known for their precision and quality, REHAU systems reflect a commitment to sustainability and efficiency, catering to both middle-class and affluent Indian consumers.

Benefits and Global Trends in Radiant Systems

- Energy Conservation and Enhanced Efficiency: Radiant heating and cooling systems are not just an alternative to conventional HVAC systems; they represent a leap forward in energy conservation. By directly transferring heat to people and objects without relying on air circulation, these systems can achieve energy savings of up to 30%. This efficiency stems from their ability to minimise ductwork losses and their exceptional ability to maintain thermal comfort with lower energy outputs.

Architectural Flexibility and Design Freedom: One of the less discussed but highly significant benefits of radiant systems is the architectural flexibility they offer. Without the need for bulky ductwork, architects and designers are free to explore creative and innovative layouts. This freedom is particularly valuable in settings where aesthetic integrity or historical preservation is important. Radiant systems fit seamlessly into spaces, whether they are modern new builds or sensitive historical renovations, providing heating and cooling without compromising design.

Environmental Impact and Practical Insights

- Minimising Carbon Footprints for a Sustainable Future: Radiant systems align closely with global sustainability goals. By using less energy and operating more efficiently, these systems help reduce the overall carbon footprint of buildings. This is crucial in the fight against climate change and is a key factor in the growing popularity of radiant solutions in environmentally conscious markets.

- Ease of Installation and Long-Term Maintenance: Contrary to what might be expected from such advanced technology, radiant heating and cooling systems are surprisingly easy to install. This ease of installation, coupled with minimal maintenance requirements, contributes to their appeal. The systems are designed with longevity in mind, featuring durable components that rarely need replacement. Fewer mechanical parts mean less wear and tear and, ultimately, a more reliable system that homeowners and facility managers can depend on for years to come.


Embracing REHAU’s radiant heating and cooling systems means opting for an energy-efficient, comfortable, and healthy living environment. Ideal for new constructions and renovations, these systems are designed to meet the specific needs of Indian homes and commercial spaces.
Curious about how a radiant floor heating system could enhance your home or office? Visit REHAU's website to learn more about their innovative solutions, or contact REHAU dealer today to discuss your specific needs.


Q. What are the advantages of RHC systems compared to conventional air systems?
A. Yes, radiant heating and cooling (RHC) systems offer several advantages over conventional air systems, including more consistent temperature control, increased energy efficiency, and improved air quality, making them a healthier option. REHAU's systems exemplify these benefits with their innovative technology.

Q. With what water temperatures does the system work for radiant heating?
A. The water temperatures used for radiant heating typically range from 30°C to 45°C, which allows for gentle and efficient heat distribution throughout the space.

Q. Do older radiant heating systems make the floors too hot?
A. No, modern radiant heating systems are designed to avoid overheating the floors, providing a comfortable warmth that is evenly distributed without the extreme hot spots associated with older systems.

Q. Does a radiant heating system have any impact on air circulation or cleanliness?
A. Yes, a radiant heating system significantly improves air quality by reducing air circulation. This minimises the distribution of dust and allergens, contributing to a cleaner and healthier indoor environment.

Q. Can I air condition my home with a radiant floor heating system?
A. Yes, it is possible to use a radiant floor heating system for cooling by circulating chilled water through the pipes, although this setup may require additional components like a dehumidifier to manage humidity levels effectively.

Q. What is the difference between designing and installing a radiant heating system and a radiant cooling system?
A. The main difference in designing and installing radiant heating versus cooling systems lies in the control of humidity and dew point to prevent condensation, along with managing different temperature requirements. Radiant cooling systems require careful consideration of insulation and dew point to ensure condensation-free operation.

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