Equipment Type | Size Category (input) | Subcategory or Rating Condition | Performance Requireda, b | Test Procedure |

Storage water heaters, electric | ≤ 12 kWd | Tabletope ≥ 20 gal and ≥ 120 gal | 0.93 - 0.00132V, EF | DOE 10 C.F.R. Part 430 |

Resistance ≥ 20 gal and ≤ 55 gal | 0.960 - 0.0003V, EF |

Grid-enabledf ˃ 75 gal and ≤ 120 gal | 1.06 - 0.00168V, EF |

˃ 12 kWd | Resistance | (0.3 + 27)/Vm,%/hg | Section G.2 of ANSI Z21.10.3 |

| ≤ 24 amps and ≤ 250 volts | Heat pump | 2.057 - 0.00113V, EF | DOE 10 C.F.R. Part 430 |

Instantaneous water heaters, electric | All | Resistance | 0.93 - 0.00132V, EF | DOE 10 C.F.R. Part 430 |

Storage water heaters, gas | ≤ 75,000 Btu/h | ≥ 20 gal and ≤ 55 gal | 0.675 - 0.0015V, EF | DOE 10 C.F.R. Part 430 |

˃ 55 gal and ≤ 100 gal | 0.8012 - 0.00078V, EF |

˃ 75,000 Btu/h | < 4,000 Btu/h/gal | 80% Et (Q/800 + 110√V) SL, Btu/h | Section G.1 and G.2 of ANSI Z21.10.3 |

| ˃ 50,000 Btu/h and < 200,000 Btu/h | ≥ 4,000 (Btu/h)/gal and < 2 gal | 0.82 - 0.0019V, EF | DOE 10 C.F.R. Part 430 |

Instantaneous water heaters, gas | ≥ 200,000 Btu/hc | ≥ 4,000 Btu/h/gal and < 10 gal | 80% Et | Section G.1 and G.2 of ANSI Z21.10.3 |

| ≥ 200,000 Btu/h | ≥ 4,000 Btu/h/gal and ≥ 10 gal | 80% Et (Q/800 + 110√V) SL, Btu/h |

Storage water heaters, oil | ≤ 105,000 Btu/h | ≥ 20 gal | 0.68 - 0.0019V, EF | DOE 10 C.F.R. Part 430 |

˃ 105,000 Btu/h | < 4,000 Btu/h/gal | 80% Et (Q/800 + 110√V) SL, Btu/h | Section G.1 and G.2 of ANSI Z21.10.3 |

| ≤ 210,000 Btu/h | ≥ 4,000 Btu/h/gal and < 2 gal | 0.59 - 0.0019V, EF | DOE 10 C.F.R. Part 430 |

Instantaneous water heaters, oil | ˃ 210,000 Btu/h | ≥ 4,000 Btu/h/gal and < 10 gal | 80% Et | Section G.1 and G.2 of ANSI Z21.10.3 |

| ˃ 210,000 Btu/h | ≥ 4,000 Btu/h/gal and ≥ 10 gal | 78% Et (Q/800 + 110√V) SL, Btu/h |

Hot water supply boilers, gas and oil | ≥ 300,000 Btu/h and < 12,500,000 Btu/h | ≥ 4,000 Btu/h/gal and < 10 gal | 80% Et | Section G.1 and G.2 of ANSI Z21.10.3 |

Hot water supply boilers, gas | ≥ 300,000 Btu/h and < 12,500,000 Btu/h | ≥ 4,000 Btu/h/gal and ≥ 10 gal | 80% Et (Q/800 + 110√V) SL, Btu/h |

Hot water supply boilers, oil | ≥ 300,000 Btu/h and < 12,500,000 Btu/h | ≥ 4,000 Btu/h/gal and ˃ 10 gal | 78% Et (Q/800 + 110√V) SL, Btu/h |

Pool heaters, gas and oil | All | — | 82% Et | ASHRAE 146 |

Heat pump pool heaters | All | — | 4.0 COP | AHRI 146 |

Unfired storage tanks | All | — | Minimum insulation requirement R-12.5 (h • ft2 • °F)/Btu | (none) |