| UO-4E | UO-5E |
|---|---|
| ENERGY STAR Partner | |
| The Marley Company | The Marley Company |
| Brand Name | |
| Weil-McLain | Weil-McLain |
| Model Name | |
| Ultra Oil | Ultra Oil |
| Model Number | |
| UO-4E | UO-5E |
| Type | |
| Boiler | Boiler |
| Fuel Type | |
| Oil | Oil |
| Efficiency (AFUE) | |
| 87 | 87 |
| Date Available On Market | |
| October 15, 2014 | October 15, 2014 |
| Date Qualified | |
| November 8, 2021 | November 8, 2021 |
| Markets | |
| United States, Canada | United States, Canada |
| CB Model Identifier | |
| ES_22947_UO-4E_03072018202327_3676846 | ES_22947_UO-5E_03072018202330_0187072 |
| Can Integrate Hot Water Heating | |
| No | No |
| Product Category | |
| Boilers | Boilers |
| Date Certified | |
| November 8, 2021 | November 8, 2021 |
| Meets ENERGY STAR Most Efficient 2024 Criteria | |
| No | No |