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Uponor Radiant Heating and Cooling Systems
Let Uponor (formerly Wirsbo) and your local HTS representative assist you with your next design from the very beginning. Once you provide us the information about your building and your space loads, we will provide all of the drawings, schedules, details, and specs you need for your complete radiant system design.
Uponor is the world's leading supplier of PEX-a systems.
- Uponor has 12 billion feet of PEX-a tubing installed worldwide
- Uponor radiant systems used in conjunction with other sustainable technologies have helped achieve LEED credits on many projects.

What is a Hydronic Radiant Cooling System?
- A radiant cooling system is an installation of embedded tubes or surface mounted panels that are designed to absorb and remove energy from a space. A radiant cooling system uses the structure and surfaces of an area to transfer energy.
- In radiant heating systems, the energy radiates out from the heated surface towards the cooler area. In radiant cooling systems, the cooled surface serves as a heat sink to absorb energy from the space.
- Most radiant cooling system designs fall within the following:
- 12-14 Btu/h/sqft of Sensible Cooling
- Up to 30 Btu/h/sqft of Solar Absorption
- 66
°F minimum floor surface temperature
- 76
°F to 78
°F room set point temperature
- 55
°F to 58
°F supply fluid temperature

Radiant Cooling - Efficiencies
- Water has ~3,500 times the energy transport capacity of air
- With radiant systems, the ventilation function is separate
- The volume of air moved and the component size can be up to 5 times less
- Duct sizes are smaller and fan horsepower may be significantly reduced
Radiant Cooling System Economics
- LBNL modeled building in 9 cities comparing radiant with ventilation and other forced air VAV systems and found that radiant cooling, on average, saved 30% overall energy for cooling and 27% on demand
- The up front cost of a hydronic radiant cooling system is comparable to a VAV system
For more radiant cooling info click here.

Radiant Heating System Advantages
- Provides a comfortable even heat with warm, cozy floors
- Eliminates cold, drafty rooms and helps keep the air space free of allergens and pollutants
- Provides a much quieter system eliminating noisy motors, blowers or fans
For more radiant heating info click here.
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Good, Better, PEX-a

- 100+ year life expectancy
- Thermal and elastic memory
- More flexible and durable than PEX-b and PEX-c
- Kink resistant and repairable
- Clean, quiet, and healthy
- 25-year warranty

Uponor Associations



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