§ Chapter 21 IRC 2021
Hydronic Piping
6 entries from Chapter 21 of IRC 2021, organized by section number. Each entry covers what the code requires, why it exists, what inspectors look for, and common mistakes.
§ 01 Sections
All 6 entries.
Sorted by section number. Click any row for the full entry — answer, requirements, edition diff, related sections.
Section
Title
Question
M2101.2
Hydronic Heating Piping Must Use Approved Materials
M2101.2
What piping materials are allowed for hydronic heating?
What piping materials are allowed for hydronic heating?
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M2101.4
Hydronic Antifreeze Must Be Compatible and Properly Protected
M2101.4
Can I put antifreeze in a hydronic heating system?
Can I put antifreeze in a hydronic heating system?
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M2101.5
Hydronic Piping in Cold Spaces Needs Freeze Protection
M2101.5
Does hydronic piping in a garage or attic need freeze protection?
Does hydronic piping in a garage or attic need freeze protection?
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M2101.9
Hydronic Piping Needs Protection Where It Passes Through Framing
M2101.9
Does hydronic piping need insulation or protection where it passes through framing?
Does hydronic piping need insulation or protection where it passes through framing?
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M2101.10
Radiant Floor Tubing Should Be Pressure Tested Before Covering
M2101.10
Does radiant floor tubing need to be pressure tested before concrete or gypcrete?
Does radiant floor tubing need to be pressure tested before concrete or gypcrete?
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M2103.2
Radiant Tubing Under Wood Floors Must Follow Listed Assemblies
M2103.2
Can radiant tubing be installed under a wood floor?
Can radiant tubing be installed under a wood floor?
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§ 02 Chapter navigation