Perception
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Easy, two timers, two fans. Have one fan on a controller set at lower speed, the other fan plugged into your light timer on full blast. Have the one timer set to come on when lights go out.
https://hydrobuilder.com/apollo-14-8-outlet-power-strip-with-timer.html?dzid=strands_734150
Found it!I have two fans at home. My current exhaust fan is 6", 400cfm. I have a 4" 180cfm fan laying around, but I'm really trying to avoid running two fans.
I want to prevent clutter & extra ducting. I was just hoping that there was a clever, single-fan way to approach this. I'll run dual fans if needed, but would prefer single fan.
You could do but it might be a little tricky if you aren't tech savvy. A variable frequency drive hooked to a PLC of some kind could do itI want to lower my fan speed at night, without totally turning it off. I was wondering if there is a controller out-of-the-box that will handle this? I don't want to manage it based off of temperature - I know there are temp controllers for this. I want to manage it based off of time or light.
I thought that there might be a device already made for this, or that I could come up with a clever plan to have a full power circuit and a regulated circuit (with speed controller). Full power when lights are on, regulated power when lights off. Just need a way to automatically swap circuits based on time or light.
I am OK with getting in to Arduino and what not, but would prefer a more simple analogue system if I can.
Backdraft dampers?
https://hydrobuilder.com/titan-cont...paign=702625&gclid=CILnssvVjdMCFQqFaQodIL8FuwI've searched high and low for a fan speed controller that has hard presets for day/night, and can't find one. I've tried to figure out ways to have it automatically switch using a timer, light sensor, and speed regulator, but can't solve it.
In the end, I think that a night/day temperature sensor speed controller (like the Mercury 3 that Dr McSkunkins posted) will be the best bet. I'm sure it will accomplish what I need, just will require a little fine tuning as temperatures in my house change with the seasons.
Thanks everyone
Seems like the only way would be computer controlled or have two fans an two timers or a switch like that.
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