8781-80-PS
PROJECT SOURCE · Ventilating Fan
ENERGY STAR CertifiedVentilating Fans →
Airflow
80CFM
Efficacy
3.9CFM/W
Sound Level
1.5sones
Type
Bathroom/Utility Room
Low efficacy
PROJECT SOURCE 8781-80-PS: efficacy 3.9 CFM/W, lower than 82% of ventilating fans (category median 4.7 CFM/W).
Where this model sits
Airflow80CFM
50median 110750
Efficacy3.9CFM/W
2.9median 4.716.7
Lower than 82% of ventilating fans.
The PROJECT SOURCE 8781-80-PS is a 80 CFM ventilating fan. At 3.9 CFM/W it ranks in the bottom 17% of the 1,010 certified ventilating fans models. Among similar-sized ventilating fans (within 10% of its size), it is less efficient than the peer median of 4.3 CFM/W.
Specifications
| Performance | |
|---|---|
| Airflow | 80CFM |
| Efficacy | 3.9CFM/W |
| Sound Level | 1.5sones |
| Number of Speeds | 1 |
| Installation | |
| Unit Type | Bathroom/Utility Room |
| Duct Size | 4.00 inch diameter |
| Airflow at 0.25 in w.g. | 61.2CFM |
| Sound at 0.25 in w.g. | 0sones |
All 17 specifications
| Lighting | |
|---|---|
| Includes Lighting | Yes |
| Ships with ENERGY STAR Lamp | No |
| Identifiers | |
| Model Number | 8781-80-PS |
| UPC | 820633310921 |
| ENERGY STAR ID | ES_1114486_8781-80-PS_05062026000000_1008873 |
| Partner | Lowe's Home Improvement |
| Date Qualified | 2026-05-06 |
| Available From | 2026-05-15 |
| Markets | United States, Canada |
Documentation
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