ROH §16-7.8

Rules for installing heaters and large water heaters

Read the official text at honolulu.gov ↗

This section says heaters must follow electrical, plumbing, and energy codes, and be installed exactly as the maker says. Very large water heaters must also meet Hawaii's boiler and pressure vessel safety rules.

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The ordinance, as written (Honolulu County) — Heaters

A copy, taken August 22, 2026. The version published by Honolulu is the one that governs, and it may have changed since. Check it before relying on anything here.

Heaters shall comply with the electrical, plumbing, and building energy conservation codes and shall be installed in accordance with the manufacturer’s instructions. Water heaters exceeding 200,000 BTUs per hour shall comply with Chapters 220 through 223, Title 12, Boiler and Pressure Vessel Code, State of Hawaii.

Read the official text at honolulu.gov ↗as published Jan 1, 2026our copy taken Aug 22, 2026

Published by the City and County of Honolulu through American Legal Publishing.

LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.