North East Hydronic Radiant Inc.
Manufacturer of Sunboard Radiant Heat Panel
Radiant floor heat is the most comfortable and efficient way to heat your home or building with unsurpassed temperature control and flexibility in zoning. For many years, typical applications for radiant systems involved embedding tubing in concrete slabs or pouring concrete over tubing stapled to sub-floors. Radiant heat provides a superior alternative to concrete with numerous advantages:

Sunboard Radiant Heat Panels are designed for simple, efficient installation over a variety of construction types. Sunboard Panels are ideal in new construction; it is particularly advantageous in the renovation market. Adding only 3/4" or 5/8" for 3/8" Pex® tubing to the existing floor height, panels provide a superior performing radiant heating system.

Even distribution of heat
Easy layout and installation
Lightweight - 5 times lighter than concrete
No need for structural upgrades

Compatible with most floor coverings
Pex tubing 8" on center
3/4" thick furniture grade plywood for standard 3/8" Pex tubing
1" thick furniture grade plywood for standard 1/2" Pex tubing
Superior heat response time
.007 thick aluminum

How It Works

Sunboard Panels are made of top-quality engineered furniture-grade plywood, grooved and laminated with a highly conductive aluminum to efficiently transfer heat from the radiant panel to the floor surface, creating a nice warm floor.

Old radiant heat systems in concrete or under subfloor work, but very inefficiently. They must first warm a large thermal mass before heating the floor and space. These systems transfer heat very slowly and can be difficult to control. Our pex panels are installed directly under the finished floor for greatly improved response time with minimal "thermal lag" to overcome.

R-Value of Floor Coverings
Flooring covering choices are also very important since they impact the system design and performance. While our radiant panels will work with most floor coverings, it is important to realize that all floor coverings offer a resistance to heat transfer as measured by their R-Value. The higher the R-Value of the floor covering, the higher water temperature it takes to overcome this resistance for a given heat output requirement. (Please contact us for more information about your floor covering.)

Sunboard Panel Requirements
Tubing Requirements:
Our radiant pex panel utilizes 3/8" or 1/2" Pex® Tubing. Loop lengths should be designed around 200 feet including supply/return leaders.

A. Because the panels are based on 8" on center spacing a tubing factor of 1.5 is used. To determine the required amount of pipe multiply the net square footage of the room by 1.5. The result is the total amount of pipe for the panels only. Supply/return leader lengths must also be added.

B. Number of loops/manifold size: To determine the total number of loops required, subtract the supply/return leader length from the desired total loop length (200 ft., 250 ft.). Divide the resulting loop length into the calculated total tubing requirement to determine the number of loops/manifold size for the area. Example: 250ft. loops minus 25ft. supply and 25ft. return leader (50ft.) = 200ft. IF the total tubing requirement is 1000ft., 1000ft. divided by 200 ft. = 5 loops.

C. Sunboard Panel Requirements: To estimate the number of panels needed, multiply the square footage of each room by the following (10% allowance for waste included):
# Panels = Sq. Ft. x 0.115

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Copyright 2010 North East Radiant Technology Inc.:  Radiant Floor Heat.  All Rights Reserved. 

Sunboard Radiant Panel Design

U.S. Pat. No. 7,832,159 AND PAT. PENDING