Model # BWS2

Internet #202067975

Master Flow 2 Speed Wholehouse Fan Control Switch
0050206396407

Master Flow

2 Speed Wholehouse Fan Control Switch

  • Two-speed fan control switch with cover plate
  • Comes standard with item 30BWHFS
  • Can be used with Master Flow item WHFS24M
$1995 /each
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Product Overview

This 2 Speed Fan Control Switch allows fan control between Low Speed, High Speed and OFF for Master Flow Whole House Fans (NOT WHFTAN1 Model). This accessory can also be added to replace the pull chain switch in the 24 in. Direct Drive Whole house Fan to allow use of the Master Flow 12 Hour Timer (WHT36). Detailed installation instructions and diagram included.

  • For use with Master Flow Belt Drive and Direct Drive Whole House Fans
  • Installation instructions and diagram included
  • UL Listed
  • 120 V AC

Specifications

Dimensions

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Warranty / Certifications

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Customer Questions & Answers

What is the amp rating?

What is the amp rating? at high? at low?
Asked by: FedPacBreaker
15 amps is the standard for any household electrical connection. The person who asked the question wanted to know what is the max amperage load that the SWITCH can handle on each of the "low" and "high" settings. For example, I have a rotary (infinite) dial which says "15 amps", as the other respondents stated, but also states "3.2 amp max load", which is not good, since the fan has a max of 5.7 amps! However, it has been connected and used for over 20 years, so, I'm not overly concerned (n.b., most whole-house fans may not work properly with rotary (infinite) switches (some mfrs even state so in their instructions/manuals), and, ironically, the slower the motor runs, the greater the likelihood of burning out any switch, due to heat build-up with higher resistance, so, make sure that your switch can handle the load (it would be nice if whole-house fan mfrs spent $10 more and put GFCI circuitry in the switch!)).
Answered by: skaizun
Date published: 2017-05-21

Does this have 3 wires

Asked by: Joe
There are three wires for the house wiring and two wires for handling the high and low speeds.
Answered by: nkdfun
Date published: 2016-12-14

dose this come in ivory color ?

Asked by: sparky
No. It is only available in white.
Answered by: Lonni
Date published: 2016-12-06

can a single speed whole house fan switch be replaced with s 2-speed switch?

Asked by: Glo
Our two speed switch is for use with Whole House Fan motors that have two speeds.If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.
Answered by: Master Flow
Date published: 2017-06-28
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Customer Reviews

2 Speed Wholehouse Fan Control Switch is rated 4.1 out of 5 by 50.
Rated 4 out of 5 by from We had this type of fan when I was younger. It is perfect for that time of year where the house ... We had this type of fan when I was younger. It is perfect for that time of year where the house heats up during the day but the evenings are still cool. Open a window or two, turn on the fan and in just a few minutes it's as cool inside as out. When not in use, hot summer or cold winters, place a piece of insulation over to avoid temperatures escaping into the attic. I will never be without one.
Date published: 2017-04-18
Rated 4 out of 5 by from Here is the wiring This switch works with whole house fans and is rated for 1/3 HP motors. The switch only comes in white and fits in a standard rectangular cover plate. The instructions are completely useless as they do not explain which connection point is for what, so I will clarify. The left side of the switch is for the black (hot) wire coming from the circuit supply at the top gold connector and the green bottom screw is for the ground from the supply. The right side has the low speed motor wire (usually it's red) at the top gold connector and the high speed motor wire (usually black) on the lower gold connector which is positioned at the mid point of the switch. The white neutral wire does not connect to the switch. A picture is attached. The instructions that come with the switch show wires going to a box with no explanation of the connection points.
Date published: 2016-05-21
Rated 4 out of 5 by from I had to run new Romex wire. The fan and switch required the copper ground, black, white and red ... I had to run new Romex wire. The fan and switch required the copper ground, black, white and red wire to work properly. The old attic fan that I replaced used a different type of switch. Fortunately the distance from the switch location to the fan was very short, and the rewiring went very easily. The switch works great.
Date published: 2017-06-13
Rated 3 out of 5 by from Control itself is excellent; much better than the initial 3-speed... Control itself is excellent; much better than the initial 3-speed rotary I replaced. The enclosed "wiring diagram" showed wires running from house electric and fan into a "black box" with a note above to "hire an electrician" !! Wiring diagram is available online; install is easy with the diagram.
Date published: 2017-07-11
Rated 5 out of 5 by from The part came on time and as advertised. The... The part came on time and as advertised. The switch is robust with screw terminals to attach wires instead of back wire insert with internal spring. The instructions were not easy to understand but luckily, I had some prior experience with this type of installation.
Date published: 2017-06-27
Rated 5 out of 5 by from Easy to install with good directions. The 24" is more... Easy to install with good directions. The 24" is more than adequate for a 2500 ' house. Timer makes sense.
Date published: 2017-05-23
Rated 5 out of 5 by from Easy It was so easy to install. The wiring was easy follow and had it finished in 5 minutes
Date published: 2017-04-18
Rated 5 out of 5 by from Nice switch Works great on my two speed 36" attic fan. Has a clean look on the wall.
Date published: 2017-03-22
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