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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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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 25-year limited warranty when installed by an Uponor-trained plumbing professional.

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Uponor PEX carries the following hydrostatic temperature and pressure ratings:

• 200°F at 80 psi
• 180°F at 100 psi
• 120°F at 130 psi (1/2" Wirsbo AQUAPEX tubing only)
• 73.4°F at 160 psi

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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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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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Uponor offers two types of PEX tubing — Wirsbo AQUAPEX® tubing and Wirsbo hePEX™ plus tubing. Wirsbo AQUAPEX® is used in plumbing and under certain circumstances in radiant floor heating systems. Typically, Wirsbo hePEX plus is used for radiant floor heating as it contains an additional layer on the tubing which acts as a barrier and reduces the amount of oxygen entering into the heating system.

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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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Uponor PEX and associated fittings are manufactured to the following standards:

• ASTM F876 "Standard Specification for Cross-linked Polyethylene (PEX) Tubing"
• ASTM F877 "Standard Specification for Cross-linked Polyethylene (PEX) Plastic Hot and Cold Water Distribution Systems"
• ASTM F1960 "Standard Specifications for Cold Expansion Fittings with PEX Reinforcing Rings for use with Cross-linked Polyethylene (PEX) Tubing"
• ASTM F2080 "Standard Specifications for Cold Expansion Fittings with Metal Compression Sleeves for Cross-linked Polyethylene (PEX) Tubing"

Additional standards for Wirsbo AQUAPEX tubing and associated fittings include:

• ANSI/NSF Standard 14 "Plastics Piping System Components and Related Materials"
• ANSI/NSF Standard 61 "Drinking Water System Components — Health Effects"
• UL 1821 "Standard for Safety for Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service" (1/2" Wirsbo AQUAPEX only)

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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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Wirsbo AQUAPEX tubing has the following listings:

• IAPMO
• CSA
• HUD
• ICC
• NSF
• ITS
• UL

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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. 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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Wirsbo hePEX plus tubing has the following listings:

• ICBO
• NSF-rfh

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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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Wirsbo AQUAPEX tubing is approved in the following codes:

• IPC
• UPC
• NSPC

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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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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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• IMC
• UMC

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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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Specifications are found: Specifications

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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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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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In recent years, ASTM F876 and ASTM F877 have been refined to incorporate benchmarks for chlorine resistance. Under certain conditions, a high concentration of chlorine can contribute to the oxidation of plastics. This, in turn, can affect service life. The upgraded ASTM standards provide an additional level of assurance that PEX tubing manufactured to these standards can withstand the potential oxidative effects of heavily chlorinated water.

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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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Crosslinked polyethylene (PEX) and chlorinated polyvinyl chloride (CPVC) are both used for plumbing systems. The PEX manufacturing process chemically joins individual polyethylene molecules through an extrusion process to create a highly flexible tubing product. With CPVC, the manufacturing process starts with PVC resin and adds additional chlorine molecules, which creates a much more rigid tubing product.

While both products are listed to their own respective ASTM standards for use in plumbing systems, PEX provides superior features, installation characteristics and longevity. For example, PEX systems offer:

- Reliable and visual connections

- Flexibility resulting in tighter bend radius

- Quick and simple fitting connections

- Safe air testing

- Fewer fittings

 

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