Ever since I found the sweet spot for mine, it's been great as @Ryan780 mentioned. I needed a repeater above the plane of the blades (split level house, so easy), nothing else worked for me.
This is where I had to have mine, on the floor above it. It wouldn't use a repeater in the same room but lower than the blade but had no trouble going through a floor to the next level. 
I gave up trying to apply logic to it. The nice part is that Unit #2 is on the top floor. So, I didn't have to put it in the fan cowl but instead it's just in the attic, about 6 feet from the fan and a foot from a repeater! 
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If neither of you have tried replacing the antenna, I'd highly recommend it so much I'll mention it again. The leaf one above works well, is about as inconspicuous as the included one if the underside is painted white (not a high bar but...), and greatly improved my stats--now I don't even need to worry about where my repeaters are, at least not more than with any other device. Don't be scared: it's pretty easy, since all you have to do is unscrew two screws to open the canopy module, disconnect and reconnect an antenna (standard uFL connector), and close it again. Much easier if you haven't already installed it, though.
I even have a extra antenna (it came in a two pack) if anyone wants to pay the minimal shipping it would take for me to get rid of it. I'll even paint it white if you want. 
(This offer has now been taken.)
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No way....to get at the one unit i have to take all the blades off the fan to get the cowl low enough. Takes me hours to do and it's been working for over a year without a blip. So, don't mess with something that's working...that's what i always say.
Mine it’s coming this week, I’ll let you know about the antenna I might buy if from you.... let’s keep in touch
I use the Lutron Caseta fan controller for the fan, and then permanently power the lights. I use zigbee bulbs and have them manually controlled by a Lutron Pico. Works a treat!
Ok guys got it working no need for extender works perfect with the remote and I got it on my HE, now how can I control it with google home?..... obviously if this is possible, Thanks
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There are two options. If you pair directly to google home, you have to control it like you would any other light. You dim to 25% for low, 50% for Medium-low, 75% for medium and 100% for high. If that works for you, then you are all done at this point.
However, I didn't really like that method, so I came up with something much, MUCH more involved using IFTTT that allows me to speak the speed name to Google Home. This uses the maker API in HE and IFTTT to get it to work. if you want more details, I can provide them. But if you're not used to IFTTT, then this wouldn't be where you'd want to start as it is pretty involved. The dimmer option would be easiest.
Also, I would advice making a separate room in Google home for "Fans". In Google home they will show up as lights. So, when you say shut off the lights for the room, the fan will shut off as well. You may also want to edit the device names before pairing to google home. For example, in my office, the main unit, which is not paired to anything is "Office Fan Main Unit" . The fan is named "Office Fan" and the Light is called "Office Fan Light". Otherwise you end up with "Office Fan Fan" and "Office Fan Light". You can edit the label applied to the device on the edit device page.
Thanks for the prompt answer Ryan....
I’m not concern with the lights on and if it’s enough and I have lights controles already because they will be separated, my concernirá with the fan only, how can I make of discoverable on google or even ifttt, can’t see it in both places, do I have to configure something in the HE?
You don't even need to use IFTTT for that. I just made Google Home routines that do the same thing. Ex: When I say "Set ceiling fan to low" Assistant will (enter command) Set ceiling fan to 25%. I just had to make one for each speed for each fan. Not ideal, but it doesn't rely on another cloud service to do it.
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Can’t even see the fan in google home 
Yes...but with Google home Routines you need one routine per speed. With my solution using IFTTT i need one app for the whole fan. Not 5. You use the IFTTT recipe that has the verbal component. I am capturing that and then passing it off the the fan with the maker api. So, if the key word is low, is sends the low command to hubitat. Makes building it a LOT easier.
Did you add it to the google home app? Just the fan component.
How?
I understand, but like I said "it's not ideal". I'm just happy to have more local control and since getting into HE, I've cut out all other cloud services (except Google Home). I'm especially glad to get rid of IFTTT and all it's unreliability.
But GH is cloud....
I find IFTTT reliability to be very service dependent. I have never once had a problem with the Google Assistant service. Everything I've used it for run extremely fast with zero slowdown. I don't know if the code is exported to the assistant cloud rather than staying with IFTTT but all my custom GH stuff runs great. The Wyze service and the iSmartAlarm service on the other had would never respond in anything less than a minute and a half. So, it's a mixed bag.
Do you have Google Home setup for Hubitat at all? For other devices? Or are you starting your GH setup from scratch?
Sorry I had it, stupidity hit me in the head my bad, now the problem is only controls the lights not the fan, only adds the light portion, I’m doing something wrong
Yes....go into the device and toggle the setting to create the two child devices. Then add those to google home, not the main device.
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