(Effective until February 1, 2021)
Table R403.6.1—Mechanical ventilation system fan efficacy.
TABLE R403.6.1
MECHANICAL VENTILATION SYSTEM FAN EFFICACY
Fan Location | Air Flow Rate Minimum (cfm) | Minimum Efficacy (cfm/watt) | Air Flow Rate Maximum (cfm) |
HRV or ERV | Any | 1.2 cfm/watt | Any |
Range hoods | Any | 2.8 | Any |
In-line fan | Any | 2.8 | Any |
Bathroom, utility room | 10 | 1.4 | < 90 |
Bathroom, utility room | 90 | 2.8 | Any |
For SI: 1 cfm = 28.3 L/min. |
[Statutory Authority: RCW
19.27A.020,
19.27A.045,
19.27A.160 and chapter
19.27 RCW. WSR 20-01-047, § 51-11R-40351, filed 12/9/19, effective 7/1/20. Statutory Authority: RCW
19.27A.020,
19.27A.045,
19.27A.160, and
19.27.074. WSR 16-02-127, § 51-11R-40351, filed 1/6/16, effective 7/1/16. Statutory Authority: RCW
19.27A.020,
19.27A.045 and chapters
19.27 and
34.05 RCW. WSR 13-04-055, § 51-11R-40351, filed 2/1/13, effective 7/1/13.]
(Effective February 1, 2021)
Table R403.6.1—Mechanical ventilation system fan efficacy.
TABLE R403.6.1
MECHANICAL VENTILATION SYSTEM FAN EFFICACYa
Fan Location | Air Flow Rate Minimum (cfm) | Minimum Efficacy (cfm/watt) | Air Flow Rate Maximum (cfm) |
HRV or ERV | Any | 1.2 cfm/watt | Any |
Range hoods | Any | 2.8 | Any |
In-line fan | Any | 2.8 | Any |
Bathroom, utility room | 10 | 1.4 | < 90 |
Bathroom, utility room | 90 | 2.8 | Any |
For SI: 1 cfm = 28.3 L/min. |
a. When tested in accordance with HVI Standard 916. |
[Statutory Authority: RCW
19.27A.045 and chapter
19.27A RCW. WSR 20-21-081, § 51-11R-40351, filed 10/19/20, effective 2/1/21. Statutory Authority: RCW
19.27A.020,
19.27A.045,
19.27A.160 and chapter
19.27 RCW. WSR 20-01-047, § 51-11R-40351, filed 12/9/19, effective 7/1/20. Statutory Authority: RCW
19.27A.020,
19.27A.045,
19.27A.160, and
19.27.074. WSR 16-02-127, § 51-11R-40351, filed 1/6/16, effective 7/1/16. Statutory Authority: RCW
19.27A.020,
19.27A.045 and chapters
19.27 and
34.05 RCW. WSR 13-04-055, § 51-11R-40351, filed 2/1/13, effective 7/1/13.]