---
kind: "section"
citation: "46 C.F.R. § 182.320"
title: "46"
number: "182.320"
heading: "Water heaters."
url: "https://uscodex.org/cfr/46/182.320"
---

# §182.320. Water heaters.

- (a) A water heater must meet the requirements of parts [53](/cfr/46/part53.md) and [63](/cfr/46/part63.md) of this chapter if rated at not more than 689 kPa (100 psig) and 121 °C (250 °F), except that an electric water heater is also acceptable if it:
  - (1) Has a capacity of not more than 454 liters (120 gallons);
  - (2) Has a heat input of not more than 58.6 kilowatts (200,000 Btu per hour);
  - (3) Is listed under UL 174, UL 1453 (both incorporated by reference; see [46 CFR 175.600](/cfr/46/175.600.md)) or other standard specified by the Commandant; and
  - (4) **Is protected by a pressure-temperature relief device.**
- (b) A water heater must meet the requirements of parts [52](/cfr/46/part52.md) and [63](/cfr/46/part63.md) of this chapter if rated at more than 689 kPa (100 psig) or 121 °C (250 °F).
- (c) A water heater must be installed and secured from rolling by straps or other devices to the satisfaction of the cognizant OCMI.

## Notes

### Amendments

[CGD 85-080, 61 FR 986, Jan. 10, 1996; 61 FR 20557, May 7, 1996, as amended at 62 FR 51358, Sept. 30, 1997; USCG-2003-16630, 73 FR 65207, Oct. 31, 2008]

### Authority

Authority: 46 U.S.C. 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 85-080, 61 FR 986, Jan. 10, 1996, unless otherwise noted.

### Amendments

[CGD 85-080, 61 FR 986, Jan. 10, 1996; 61 FR 20557, May 7, 1996, as amended at 62 FR 51358, Sept. 30, 1997; USCG-2003-16630, 73 FR 65207, Oct. 31, 2008]