Greenheck SP-B50-QDvsWintek 7140-50-PS
Side-by-side ventilating fan comparison
Greenheck SP-B50-QD
Airflow
60CFM
Efficacy
3.9CFM/W
Sound Level
0.4sones
Type
Bathroom/Utility Room
Wintek 7140-50-PS
Airflow
50CFM
Efficacy
3.1CFM/W
Sound Level
2sones
Type
Bathroom/Utility Room
Key differences
Greenheck SP-B50-QD is 21% more efficient at 3.9 CFM/W versus 3.1 CFM/W for the Wintek 7140-50-PS. The Greenheck SP-B50-QD is larger at 60 CFM versus 50 CFM. Overall, the Greenheck SP-B50-QD sits higher in the category, ranking above 17% of certified ventilating fans.
Performance
| Spec | Greenheck | Wintek |
|---|---|---|
| Airflow(CFM) | 60 | 50 |
| Efficacy(CFM/W) | 3.9 | 3.1 |
| Sound Level(sones) | 0.4 | 2 |
| Number of Speeds | 1 | 1 |
Installation
| Spec | Greenheck | Wintek |
|---|---|---|
| Unit Type | Bathroom/Utility Room | Bathroom/Utility Room |
| Duct Size | 6 inch diameter | 3.00 inch depth X 0.00 inch width |
| Airflow at 0.25 in w.g.(CFM) | 44.3 | 41 |
| Sound at 0.25 in w.g.(sones) | 0 | 0 |
Lighting
| Spec | Greenheck | Wintek |
|---|---|---|
| Includes Lighting | No | Yes |
| Ships with ENERGY STAR Lamp | No | No |