market for radiant floor heating has grown by 25 percent every year for the past 10 years, the number of companies that specialize in selling these systems has also increased. Radiant floor heating system suppliers As the U.S. Radiant floor heating is attributed to increasing both residential pump and boiler sales over the past five years, bringing renewed sales for the new-home market. Pump companies and boiler manufacturers are now designing circulators with radiant floor heating systems as part of their pump design criteria. The ability to measure the outside air temperature, sun loads and occupancy levels and then to adjust the output of the system accordingly provides the control necessary in preventing thermal lag associated with floor heating systems of the past. Engineers who want to learn more about PEX can contact the High Temperature Division of the Plastics Pipe Institute (PPI) at 20 or visit Modern controls, circulators and boiler systems As with the entire HVAC industry, the growth of radiant floor heating has greatly benefited from the advent of electric control systems. And PEXb is now going into its second year. PEXa and PEXc have been in wide use in the U.S. With the former PB extruders making PEXb, marketing efforts for the use of PEX greatly increased. This changed the market for PEX considerably because PEX did not have a competitor in PB competing for the plastic pipe market share. (Modern Plastics, May 1996, "Extruders eye options after Shell halts PB pipe-resin sales in U.S.") Companies that were making PB were getting into the PEX business within months after their PB resin shipments stopped. The silane compounds used to make PEX worked in the same extrusion machinery used to make PB. market manufactured by the silane (PEXb) method. market for pipe production in 1996, another type of PEX was introduced to the U.S. With the removal of Polybutylene (PB) resins from the U.S. Both the peroxide (PEXa) and electron (PEXc) methods had a strong performance rating and have continued to satisfy European specifying engineers for more than 25 years. PEX pipe While the United States had its sights on the moon during the late '60s and early '70s, Europe was busy developing PEX. The challenge now for the radiant floor heating industry is to reintroduce these heating concepts with the new technology to a skeptical clientele in the commercial/industrial realm. 1) Leaks started showing up from the corrosion of the steel or copper piping systems.Ģ) The thermal mass properties of the slab made the systems difficult to control.ģ) There were higher installation costs associated with steel or copper piping systems.Ĥ) Electrical companies instigated promotional programs to introduce the heat pump.īeginning in the late 1980s, radiant floor heating made a comeback in the residential market because of some key industry changes:ġ) Introduction of plastic pipe made from cross-linked polyethylene (PEX)Ģ) Introduction of electronic controls, boilers and circulators designed for radiant floor heatingģ) Installation components, manifolds and flexible plastic pipe were designed to be installed as a system, thus reducing installation time, cost and skills required of the installer.Ĥ) Building owners discovered that they missed the comfort associated with hot-water heating systems, both hydronic radiation and hydro-coils.
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