UPDATED on April 18, 2014
Hydronic Systems Circulate Hot Water
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Hydronic Systems, including:
- Design and build strategies
- Necessary codes
- Application how-tos
- Using materials
Hydronic heating systems are clean and quiet
Hydronic heating systems distribute heat by pumping water or a solution of water and antifreeze through tubing made from copper or a type of plastic called cross-linked polyethylene (PEXCross-linked polyethylene. Specialized type of polyethylene plastic that is strengthened by chemical bonds formed in addition to the usual bonds in the polymerization process. PEX is used primarily as tubing for hot- and cold-water distribution and radiant-floor heating.). Most systems rely on a boiler to heat the fluid. They typically burn fossil fuels, such as natural gas, heating oil, or propane. Dual-fuel boilers can burn either one of two fuels, cordwood or fuel oil, for example.
Because hydronic heat does not rely on the circulation of air, it does not move dust and other contaminants around the house. Most hydronic systems don't use fans, either, so they don't make much noise and they don't create drafts. The pressure imbalances that forced-air systems can inadvertently create are not a problem with hydronic systems.
The big drawback with a hot-water heating system is that ...
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