Pls suggest BLDC Fan?

[rushikesh_jadhav]

I have ordered "atomberg Renesa Smart 1200mm BLDC Ceiling Fan" from Amazon but yet to deliver. Does it integrate with alexa smoothly? How much energy bill I can save per year approx. Do I have to remove existing fan regulator? This is my first smart fan purchase. Any advice for me?

 

[unni]

Do I have to remove existing fan regulator?

Disclaimer: I am not an electrician, nor do I have much knowledge in these.

I replaced my old fan with the Atomberg one myself. I didn't remove the old brick type fan regulator, just left it at maximum speed. So far no issues. I had planned to re-wire the fan switch without the regulator, then forgot until I saw your post lol.

Main reason I chose Atomberg was it had a Home Assistant integration.. and works very well

Does the Home Assistant integration with the fan require internet? Or will it work completely offline (via BlueTooth)?

 

[MarioBros]

Does the Home Assistant integration with the fan require internet? Or will it work completely offline (via BlueTooth)?

yes the integration needs internet, but if u have Bluetooth enabled in ur home assistant then u can control it locally

 

[lockhrt999]

@unni

Does the app not allow customizing fan speeds manually? Apart from those 1 to 5 settings.

 

[guest_999]

Does the app not allow customizing fan speeds manually? Apart from those 1 to 5 settings.

How will that work though? I mean, it is not like a smart light with voltage controllable leds to control brightness.

 

[lockhrt999]

How will that work though? I mean, it is not like a smart light with voltage controllable leds to control brightness.

Well, I don't know. Speed 1 is still too fast for me. I need a speed slower than that.

 

[unni]

@unni

Does the app not allow customizing fan speeds manually? Apart from those 1 to 5 settings.

It doesn't look like app allows the speed to be set to in between say 0 & 1 or 1 & 2. I just tried it, and the app's slider will allow me to place the slider between 0 & 1. But, after a few seconds, the slider automatically positions itself at level 1. Same happened between level's 1 & 2 as well.

I am attaching a video showing this. I have also included other app functionality in case anyone's curious.

https://imgur.com/a/mUaWkhG

 

[lockhrt999]

It doesn't look like app allows the speed to be set to in between say 0 & 1 or 1 & 2. I just tried it, and the app's slider will allow me to place the speed indicator between 0 & 1.

Hmm. I thought it was possible with the Atomberg app. I remember reading somewhere like so. I guess it was some other brand fan.

 

[chyawanprash]

Hmm. I thought it was possible with the Atomberg app. I remember reading somewhere like so. I guess it was some other brand fan.

while searching for a BLDC fan, i came across a brand which was offering 25 speeds. users seemed to be quite pleased with the micro-adjustments.

 

[lockhrt999]

while searching for a BLDC fan, i came across a brand which was offering 25 speeds. users seemed to be quite pleased with the micro-adjustments.

I'd like that.

The speeds the Atomberg has given me:

• 1
• 2
• 3
• 4
• 5

The speeds that I want:

• 0.25
• 0.5
• 0.75
• 1
• 1.25

In the past 3 years, I have never went above the speed 1. Most of the time, even the 1 speed is too chilly for us.

 

[MadAxe]

while searching for a BLDC fan, i came across a brand which was offering 25 speeds.

Which brand?

 

[TEUser2K1]

I didn't remove the old brick type fan regulator, just left it at maximum speed. So far no issues. I had planned to re-wire the fan switch without the regulator, then forgot until I saw your post lol.

Have an Usha Technoair 1200mm 32W BLDC fan, looking for suitable regulator since I cannot trace the remote (or the fan did not come with remote at all).
Using fans at full speed can damage them quickly, wear and team, other serious issues, etc.
Old block type regulators uses lot of power.
BLDC fans require different kind of efficient regulators and am too looking for correct type, electricians I met are not helpful here.

 

[lockhrt999]

BLDC fans require different kind of efficient regulators and am too looking for correct type, electricians I met are not helpful here.

What's the correct type? You only have fan regulator and dimmer. What else is there?

 

[aadilxdev]

I'd like that.

The speeds the Atomberg has given me:

• 1
• 2
• 3
• 4
• 5

The speeds that I want:

• 0.25
• 0.5
• 0.75
• 1
• 1.25

In the past 3 years, I have never went above the speed 1. Most of the time, even the 1 speed is too chilly for us.

But I want upto 25 with 1-5 then multiples of it upto 25 cause its so hot here in UP during summer btw why people talking bout this in winter

 

[TEUser2K1]

What's the correct type? You only have fan regulator and dimmer. What else is there?

2M BLDC fan Regulator – switch

Crabtree Signia Fan Regulator for BLDC fan 2M White | mykit | Buy online | Buy Crabtree, Dimmers & Regulators online

Buy Crabtree Signia Fan Regulator for BLDC fan 2M White online. Shop Dimmers & Regulators, Switches , Sockets & Plugs, Electricals at lowest price in kerala,india. Best Deals in Switches , Sockets & Plugs from Online Shopping Site mykit.in

mykit.in

Unified Speed Control Platform for BLDC Ceiling Fans

This platform defines an integrated way of controlling BLDC ceiling fan speed through a mobile app or standard IR remote in a single design.

www.renesas.com

REGULATOR BLDC CEILING FANS

Beat the Heat this summer: Immerse Yourself in Comfort with Our Energy Efficient BLDC Fans. Feel the Difference: Unleash Maximum Airflow for Ultimate Comfort with Our Superfan Collection.

superfan.in

These hints may be helpful.

 

[Kevin Lane]

If a fan needs boost mode for marketing, it doesn't bode very well for speeds.

Basically, manufacturer is accepting that speed of the fan is not sufficient in itself. It also bolsters the common belief that BLDC fans are not fast enough.

 

[codwapeace]

BLDC fans are bad. The efficiency of AC motor is >85% and run at 60 W (so at least 50W power is converted to air flow). So, if a fan is running at 30 W, it is impossible for the fan to provide 50W of air flow even if it were 100% efficient. Moreover, the blades of BLDC fans are poorly designed to overcome their low power so that they can maintain a reasonable RPM. But, RPM without properly designed blades have no value. These fans have very low air spread. You have basically sit under the fan to get any air.

 

[lockhrt999]

But I want upto 25 with 1-5 then multiples of it upto 25 cause its so hot here in UP during summer btw why people talking bout this in winter

You need a helicopter in your room.

2M BLDC fan Regulator – switch

Crabtree Signia Fan Regulator for BLDC fan 2M White | mykit | Buy online | Buy Crabtree, Dimmers & Regulators online

Buy Crabtree Signia Fan Regulator for BLDC fan 2M White online. Shop Dimmers & Regulators, Switches , Sockets & Plugs, Electricals at lowest price in kerala,india. Best Deals in Switches , Sockets & Plugs from Online Shopping Site mykit.in

mykit.in

I have not seen BLDC specific fan regulators in mainstream switch makers like Anchor, Schneider etc. And we can't just bring a regulator made by crabtree and fit in our board faceplates. We will have to replace all the switches and faceplate for that board.

I have a Schneider fan regulator for my atomberg (model that comes without a remote). The Wattage from the superfan page is correct. It does take 6W on first speed, I have checked that. But the chart also says PF is less than a third. That should mean the fan is using 2W only. The fan whirls so fast on the first speed, so I highly doubt that it's taking only 2Ws.

BLDC fans are bad. The efficiency of AC motor is >85% and run at 60 W (so at least 50W power is converted to air flow). So, if a fan is running at 30 W, it is impossible for the fan to provide 50W of air flow even if it were 100% efficient.

Actually, for watt to watt comparison, BLDC fans rotate 2–3 times faster for the same power consumption than an AC motors. AC motors waste more than half of the power in heat.

And that argument you see in BLCD marketing in that a 30W fan provides as much airflow as a 60W regular fan is also true. This is the same as a 10W LED bulb can be brighter than a 60W incandescent bulb. A BLDC motor, whether that's in your fan, AC, washing machine, fridge, mixer, will consume only a third to half as much power as a comparable AC motor. And, not to mention, BLDC motors last incredibly long.

RPM without properly designed blades have no value. These fans have very low air spread. You have basically sit under the fan to get any air.

This is not a BLDC problem. Many newer fans have this issue. I have 2 AC fans who have this issue and one BLDC which doesn't.

 

[TEUser2K1]

It also bolsters the common belief that BLDC fans are not fast enough.

Have few bldc fans at home, all have more than enough speed.
Moreover, the Usha Technoair 1200mm 32W BLDC fan for which am looking for correct regular is so fast, am afraid to use it.

I have a Schneider fan regulator for my atomberg (model that comes without a remote). The Wattage from the superfan page is correct. It does take 6W on first speed, I have checked that. But the chart also says PF is less than a third. That should mean the fan is using 2W only. The fan whirls so fast on the first speed, so I highly doubt that it's taking only 2Ws.

Yes, there is some confusion on how to select regulator correctly.
Most probably fan is spinning so fast in first speed is because regulator is not appropriate.
USA Technoair 1200mm BLDC fan is rated for 32W, don't know what to do in this case, as without regulator it works in extremely high speed.

 

[lockhrt999]

USA Technoair 1200mm BLDC fan is rated for 32W, don't know what to do in this case, as without regulator it works in extremely high speed.

If you run a fan without a regulator, it spins at full speed, which is level 5. It's not going to break.

Most probably fan is spinning so fast in first speed is because regulator is not appropriate.

But man, such a high speed at just 6W. BLDC are too efficient.