§ Chapter 28 IRC 2021
Water Heaters
10 entries from Chapter 28 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 10 entries.
Sorted by section number. Click any row for the full entry — answer, requirements, edition diff, related sections.
Section
Title
Question
P2801.1
Electric Water Heaters Still Need Plumbing Safety Devices and Disconnecting Means
P2801.1
What code rules apply to an electric water heater installation?
What code rules apply to an electric water heater installation?
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P2801.1
Gas Water Heaters Must Coordinate Plumbing, Fuel Gas, Venting, and Combustion Air
P2801.1
What code rules apply when installing a gas water heater?
What code rules apply when installing a gas water heater?
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P2801.1
Tankless Water Heaters Must Follow Listing, Clearances, Relief Protection, and Venting Rules
P2801.1
What does code require for a tankless water heater?
What does code require for a tankless water heater?
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P2801.1
Water Heaters Must Be Installed Where They Can Be Serviced Safely
P2801.1
Where can a water heater be installed in a house or garage?
Where can a water heater be installed in a house or garage?
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P2801.5
Water Heater Pans Are Required Where Leakage Could Damage the Building
P2801.5
When is a drain pan required under a water heater?
When is a drain pan required under a water heater?
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P2801.5.1
Water Heater Pan Drains Need Proper Size and Termination
P2801.5.1
How big does a water heater pan drain need to be and where can it drain?
How big does a water heater pan drain need to be and where can it drain?
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P2801.8
Water Heaters Need Seismic Bracing Where Earthquake Loads Apply
P2801.8
Does IRC require earthquake straps on a water heater?
Does IRC require earthquake straps on a water heater?
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P2803.1
Hot Water Temperature Must Be Controlled Where Scalding Is a Risk
P2803.1
What temperature should a residential water heater be set to for code?
What temperature should a residential water heater be set to for code?
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P2803.1
Water Heaters Used for Space Heating Must Protect Potable Water
P2803.1
Can a domestic water heater also be used for space heating?
Can a domestic water heater also be used for space heating?
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P2804.6.1
T&P Relief Valve Discharge Pipes Must Drain Safely and Visibly
P2804.6.1
Can a water heater T&P valve drain into the pan or outside?
Can a water heater T&P valve drain into the pan or outside?
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