Ceiling fans?


Anyone have ceiling fans detected? I have four in my home we use daily and none have been detected yet.


None yet here but I’ve only had sense for just over a month. If you’re trying to get a ballpark for a fan you can watch the live power usage when turning one on/off. When I tested my fans they each used less than 50w of power.


My fan remains on (low setting) all of the time so it will forever remain a vampire in the “always on” category.


Yeah, I can see the waveform. Mine are around 92w while running so not a bit deal. Just interesting they have not been detected with the frequency they are on/off.


I doubt sense has even worked on a preliminary model.


Any reason you think that NJ? Not a large enough usage base for them?


I think it’s because it’s a lower priority than getting the high consumers right. I was actually surprised to see just how little power they use - less than 100w and typically closer to 40-50w once they get going.

I’m sure there’s a large enough user base, though - we have six in our home that are on/off regularly :slight_smile:


I have a fan in the living room that only gets used in the summer (so Sense doesn’t have any data on that yet), but also a ceiling fan in the master bedroom and nursery that run all night long, and off during the day. None detected yet.


Sense has detected none of our various fans and blowers in just over a year. These include two ceiling fans, an ERV blower (which runs regularly on a timer), and the blower for our mini-ducted air distribution system (timer plus on demand).

Apparently it has trouble with motors.


We’ve had Sense listening since the Fall of 2016. We have six ceiling fans, three of which are heavily used from mid-Spring to mid-Fall. None of them have been detected.


Yeah, I really would like to get these detected. @BradAtSense any comment on these devices?

Even though they are a relative low draw item they are heavily used by many and add up to a large power usage over a year.


That’s a great question, @adam1. I don’t think any specific work has been done on ceiling fans in particular, but single channel motor models are absolutely something we’re working, so these may start getting picked up as the work evolves. I know the multiple speeds (and in some cases variable speeds through a dimmer) can present some challenges, but it’s not insurmountable, it just may take some extra care.

Has anybody been able to figure out an approximate range of how much their ceiling fan uses at different speeds?



I have three, two installed and measuring power on those is difficult/impossible. I have a third not yet installed, so I just ran it with my Kill-a-watt meter, and the motor draws about 80 watts (no blades) on high. I’m sure that the drag of the blades would increase that, but no clue by how much….guessing about 100 watt.

At my electric rates, that’s about 2 cents per hour, so with normal use, it’s not very much cost. I’m MUCH more interested in devices that draw killowattts, not tens of watts.

One of the installed units also has lights, and we’ve installed LED’s in those…so if I’m running the LED full brightness that would add another 60 watts or so…but we don’t do that


I have 7 ceiling fans all with lights. Sense has not detected any of the fans or any lights in my home. I have been using Sense for 17 months.


None of my single phase motors have been found to date.

I have two ring compressors, a jet pump, to many fans and blowers to count. Would be nice to get the more used items detected


Each of mine start out at +/-100w on high and then taper off and run steadily at 60-70w or so.

Most fans have three speed settings, and each has a similar curve relative to the speed.

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