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Uponor Radiant floor heating is a comfortable and efficient form of heating where warm water circulates through flexible, specially designed PEX tubing installed under the floor. The heat radiates evenly up through the floor warming people and objects in the room and providing more comfort for less money.

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Unlike traditional heating systems that just warm the air, radiant heating warms the floor and the objects in contact with the floor. The entire floor distributes a consistent, even and quiet heating. There are no drafts and radiant floor heating takes the chill out of cold tile, marble and wood floors.

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Uponor Radiant Floor Heating has existed for more than three decades. We've been making the PEX tubing used in our radiant floor heating systems since 1970, longer than any other PEX tubing manufacturer.

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PEX (crosslinked polyethylene) tubing is a specially designed plastic tubing with distinctive properties that make it ideal for radiant floor heating and plumbing systems. Uponor produces PEX-a tubing, which is considered the superior type of PEX.

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Currently, three methods for producing crosslinked polyethylene (PEX) tubing exist:

• Engel or peroxide method (PEX-a)
• Silane method (PEX-b)
• E-beam (electron beam) or radiation method (PEX-c)

All three processes generate tubing that is crosslinked to varying degrees, and are acceptable for potable water distribution applications according to ASTM F876 and F877 standards.

Uponor manufactures Engel-method PEX-a tubing. The PEX tubing industry considers this tubing superior because the crosslinking is done during the manufacturing process when polyethylene is in it amorphic state (above the crystalline melting point). Because of this, the degree of crosslinking reaches around 85% (higher than the other methods), resulting in a more uniform product with no weak links in the molecular chain. Learn more about why PEX-a Tubing is better.

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Leaks are not a concern with Uponor PEX when the system is properly installed. With a life expectancy of more than 100 years, Uponor PEX tubing has withstood the most extensive tests in the industry for over 30 years. What's more, all our PEX tubing is thoroughly inspected before it leaves our manufacturing plant. We also offer a 30-year limited warranty when installed by a Home Comfort Team (HCT) member.

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No. A properly designed radiant floor heating system will deliver comfortable warmth that's a pleasure to walk on - especially in bare feet! If additional heat is needed to satisfy the heat load, additional warmth can easily be added by installing radiant walls and/or ceilings. Uponor offers technical design support as well as design software.

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Not at all. Our Quik Trak™ system is perfect for remodeling or retrofit projects. Quik Trak is installed over a plywood subfloor. It's great for putting radiant comfort in a basement or anywhere in your home.

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Absolutely. Uponor radiant floor heating systems are flexible, meaning you can heat the entire home or only those rooms you want to heat. The bathroom is a popular area of the home to heat.

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We offer Radiant Ready™, in which the PEX tubing is installed in the slab during construction and you can complete the system later. This adds relatively little to the cost of a poured floor, but can add a great deal to the value of your home later.

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Sure you can. In fact, separate heating and cooling systems really make the most sense. Radiant floor heating keeps the heat near the floor where it does the most good; and air conditioning ductwork is placed only where it is needed to cool your home. The result is optimal comfort and efficiency all year.

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Yes. We are so confident of the quality of an Uponor radiant floor heating system that we offer a 30-year warranty on the tubing when installed by a member of our Home Comfort Team (HCT).

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Yes, our radiant heat system has no drafts, fans or blowers to circulate dust, dirt and other allergens throughout your home. Warm radiant floors can eliminate the need for carpeting which is a breeding ground for dust mites, a very common cause of allergic respiratory disease. The result is a clean, healthy environment —a must for people with allergies.

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Uponor does not install radiant floor heating systems. However, we have a national network of professional installers, Home Comfort Team (HCT) members, who are trained by Uponor to install radiant floor heating.

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We can put you in touch with someone who has been trained and knows how to install a radiant floor heating system or we can also offer to train your contractor. Find an installer.

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The Home Comfort Team (HCT) is a national network of thousands of independent contractors who are Uponor-trained in the proper design and installation of our radiant floor heating systems. They use sophisticated Uponor software that makes it easy to calculate, design and install a system that meets your specific needs.

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It's easy. Just click on Find an Installer or call (800) 321-4739 and we'll provide names of HCT members in your area.

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Yes. Ask your Home Comfort Team (HCT) member for the names of satisfied customers in your area or check out our case studies to see what satisfied radiant floor heating customers have to say.

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Radiant cooling has gained recent popularity in Europe and North America because it offers the potential to reduce cooling energy consumption and to reduce peak cooling loads when coupled with building thermal mass.

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Radiant cooling refers to any system where surrounding surface temperatures are lowered as means of removing sensible heat gain and thus contributing to thermal comfort.

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A hydronic radiant cooling system is an installation of embedded tubes or surface mounted panels that are designed to absorb and remove energy from a space, 50% to 80% of which is radiant energy. Just as in heating, a radiant cooling system uses the structure and surfaces of an area to transfer energy.

In radiant heating systems, the energy moves away from the heated surface towards the cooler area. In radiant cooling systems, the energy moves towards the cooled surface from the warmer area.

.

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Answer
PEX (crosslinked polyethylene) tubing is a specially designed plastic tubing with distinctive properties that make it ideal for radiant floor heating and plumbing systems. Uponor produces PEX-a tubing, which is considered the superior type of PEX.

Need More Help? Click Here

Answer
Currently, three methods for producing crosslinked polyethylene (PEX) tubing exist:

• Engel or peroxide method (PEX-a)
• Silane method (PEX-b)
• E-beam (electron beam) or radiation method (PEX-c)

All three processes generate tubing that is crosslinked to varying degrees, and are acceptable for potable water distribution applications according to ASTM F876 and F877 standards.

Uponor manufactures Engel-method PEX-a tubing. The PEX tubing industry considers this tubing superior because the crosslinking is done during the manufacturing process when polyethylene is in it amorphic state (above the crystalline melting point). Because of this, the degree of crosslinking reaches around 85% (higher than the other methods), resulting in a more uniform product with no weak links in the molecular chain. Learn more about why PEX-a Tubing is better.

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No. A phase change is required to address this load. This is accomplished by the ventilation system of the building. The ventilation system will also control the balance of the sensible load throughout the occupied time of the day.

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No, one system can both heat and cool and in some climates in North America, the system may do both throughout the day as well as be design to transport heat from one side of the building or the other!

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Yes. Specifically there are Low Mass and High Mass radiant cooling systems. Low mass radiant systems circulate cool water in specialized panels or beams and typically operate during the occupied time; high mass systems cool the building structure (slab, walls, ceilings) during unoccupied time and provide the additional advantage of off-peak cooling and further reduction in energy costs.

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Because radiant surfaces are often cooled only 2-4°C below the desired indoor air temperature, there are many opportunities for innovative cooling sources such as night fluid cooling, ground-coupled hydronic loops, and indirect evaporative cooling.

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• Museums
• Institutional & Educational facilities
• Office buildings & Atrium areas
• Manufacturing & Retail spaces
• Hospitals & Health Care facilities
• Dormitories, Barracks & Prisons
• Churches
• Airports

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Radiant cooling works best where wet bulb gain in the building can be controlled by the air handling system. Most often this is found in commercial building, however, in some climates where relative humidity is lower and in larger residences, where relative humidity can be controlled; radiant cooling is a additional strategy to lower cooling costs.

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Yes, a floor cooling system should primarily be used where the system also will be used for heating in winter.
Design a radiant heating/cooling system to maximize the cooling capacity.

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Yes, however the ducts can be smaller which saves  structural height
Ventilation is necessary to address the latent load and bring in the required refresh air.

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Yes, there are very considerable LEED advantages with radiant cooling systems.  Including, but not limited to peak loads that are reduced as a result of thermal energy storage in the panel structure, exposed walls, and partitions. Radiant cooling systems operate at a higher supply chilled water temperature, and therefore ground and bay water could be utilized.

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The cooling capacity of a floor system depends on the heat exchange between the floor surface and the space (convective and radiant heat exchange coefficient), the heat conduction between the floor surface and the tubes (floor surface material, type of concrete, slab thickness, spacing between tubes) and the heat transport by water (water flow rate, temperature difference between supply and return).
Dew point, floor coverings, AUST(average uncontrolled surface temperature) and average water temperature

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The heat transfer between the floor surface and the tubes is influenced by floor construction in the exact same physical way by floor cooling as by floor heating. Therefore the calculation of the cooling capacity can be based on the same method How about, how does a radiant cooling system work? Just in general without going too in depth.

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Less than 50W/m² (17 Btu/ft² . h). In spaces with direct sunshine on the floor (Atrium, entrance hall, show room) the cooling capacity will be significantly higher. (14 Btu/sqft/h)

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A floor cooling system must be controlled to avoid condensation. This may be done by a supply water temperature controlled by the dew point temperature.  It is possible to cool with a floor system, but the system should be used in conjunction with a supplemental system.

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