§ Chapter 20 IRC 2021
Boilers and Water Heaters
6 entries from Chapter 20 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
M2001.1
Boiler Rooms Need Safe Access, Clearances, and Service Space
M2001.1
Does a boiler room need special access or working space?
Does a boiler room need special access or working space?
→
M2001.1
Boilers and Water Heaters Need Access and Listed Clearances
M2001.1
How much clearance is required around a boiler or water heater?
How much clearance is required around a boiler or water heater?
→
M2002.2
Boiler Relief Discharge Piping Must Terminate Safely
M2002.2
Where should the boiler relief valve discharge pipe terminate?
Where should the boiler relief valve discharge pipe terminate?
→
M2002.2
Residential Boilers Need Proper Pressure Relief Valves
M2002.2
Does a residential boiler need a pressure relief valve?
Does a residential boiler need a pressure relief valve?
→
M2003.1
A Dripping Boiler Relief Valve Often Points to Expansion Problems
M2003.1
Why is my boiler relief valve dripping after the system heats up?
Why is my boiler relief valve dripping after the system heats up?
→
M2004.1
Combination Water Heating and Space Heating Needs Approved Equipment
M2004.1
Can a water heater be used for both domestic hot water and space heating?
Can a water heater be used for both domestic hot water and space heating?
→
§ 02 Chapter navigation