Adding a Fan Speed Control to my Range Hood
I have a Hengs range hood in my RV. The fan is effective, but sometimes too noisy and powerful, particularly when just venting a little heat and steam from a coffee pot early in the morning. I decided to add a Pulse Width Modulator (PWM) fan control to it. I picked it up from Amazon and it came with a remote control knob.
The advantage of a PWM controller is that it is much more efficient at reducing power than a resistor pack, since resistors simply turn excess current into heat.
Thankfully, Heng provided a generous wire channel between the front panel and the fan. There is plenty of room for a PWM controller in there.
PWM controller mounted in wire channel. This particular model mounts with 3mm screws; not provided.
I mounted the control knob on the front panel. I had to keep it close to the existing fan switch so it would not interfere with re-installing the wire channel.
Now, I can choose a low, quiet setting for morning coffee and a full-force setting for cooking bacon.
The advantage of a PWM controller is that it is much more efficient at reducing power than a resistor pack, since resistors simply turn excess current into heat.
Thankfully, Heng provided a generous wire channel between the front panel and the fan. There is plenty of room for a PWM controller in there.
PWM controller mounted in wire channel. This particular model mounts with 3mm screws; not provided.
I mounted the control knob on the front panel. I had to keep it close to the existing fan switch so it would not interfere with re-installing the wire channel.
Now, I can choose a low, quiet setting for morning coffee and a full-force setting for cooking bacon.
