Thank you for your question on the model WHV-20 whole house ventilator and the 72W solid state speed control. The WHV-20 will draw 8 Amps and the 72W is rated at 6 Amps. The 72W cannot be used with the WHV-20. We no longer have a switch that can be used with the WHV-20.
Date published: 2014-11-07