Radiant Cooling

How it Works....

Radiant cooling works by circulating chilled water (typically 16–18 °C) through panels embedded in ceilings, walls, or floors. These panels absorb heat directly from people, equipment, and room surfaces through radiation and natural convection, rather than cooling only the air. Because water is 4,000 times more effective than air at transporting heat, radiant systems can deliver the same cooling effect with far less energy. To manage humidity and fresh air supply, radiant cooling is paired with a Dedicated Outdoor Air System (DOAS), which removes moisture (latent load) and provides clean, dehumidified ventilation. This split approach ensures precise temperature and humidity balance while preventing condensation.

How It Saves Energy

Radiant cooling consumes 30–50% less energy compared to conventional HVAC systems. The main reasons are listed below

Water vs. Air Efficiency

Water carries heat far more efficiently, so pumps use much less energy than large fans.

Reduced Fan Power

Smaller ductwork is required since air is only used for ventilation, not bulk cooling.

Higher Operating Temperatures

Chilled water at 16–18 °C (instead of 7 °C in HVAC) means chillers operate more efficiently.

Lower Peak Loads

Radiant systems flatten cooling demand, reducing peak energy consumption.

Return on Investment (ROI)

While initial installation costs may be slightly higher, radiant cooling pays back quickly through operational savings:

Energy cost reduction of up to 50%.
Smaller ductwork and equipment lower construction and maintenance costs.
Longer equipment life due to reduced wear and lower operating pressures.
Typical ROI ranges from 2–3 years, depending on building size, usage, and local energy costs.

Health & Wellness Benefits

🔇 No Drafts or Noise – Cooling is delivered silently, without the cold air blasts of conventional AC.

❄️ Improved Indoor Air Quality – Since air is used only for ventilation, less recirculated dust and allergens circulate.

💧 Stable Humidity Levels – DOAS keeps indoor air dry and healthy, preventing mold growth.

🌡️ Thermal Comfort – Occupants feel naturally cooler because their body heat is directly absorbed by radiant panels.

Eco-Friendly & Sustainable

Uses less energy, reducing carbon footprint.
Operates efficiently with renewable sources (solar-powered chillers, geothermal, etc.).
Requires less refrigerant than conventional HVAC, minimizing environmental impact.
Contributes to LEED and green building certifications.

Superior Comfort Compared to Conventional HVAC

Traditional HVAC cools by blowing chilled air, which often creates uneven temperatures, drafts, and noise. Radiant cooling, however:

Provides uniform cooling across the entire space.
Eliminates hot spots and cold drafts.
Maintains natural thermal balance, making it feel cooler at slightly higher air temperatures.
Allows occupants to enjoy silent operation, unlike noisy fans and ducts.

Why It’s Better Than Conventional HVAC

Efficiency

Up to 50% less energy use.

Comfort

Silent, draft-free, and uniform cooling.

Space Saving

Smaller ducts, freeing up ceiling and floor space.

Flexibility

Works seamlessly with modern architecture and open layouts.

Sustainability

Lower carbon footprint and eco-friendly design.

Future-Ready

Ideal for smart buildings with integrated energy management.

Radiant Cooling with DOAS is not just another HVAC option—it’s a transformational technology that combines comfort, health, sustainability, and efficiency. It’s the future of indoor climate control for offices, hospitals, residences, and green buildings.