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Review for: Lasko 3723 20" Box Fan

How on earth do you choose a box fan? Well really they mostly choose us don't they, we choose the first box we see. The product descriptions aren't much help, they mostly all say they are quiet, powerful, low cost to operate, etc. Are they really all that different from each other?

When looking for a replacement fan I found 2 of our fans were recalled in 2005 for fire hazard, so now I am replacing 3 fans. I guess in-plug mini-fuses became universal for a reason. Let's get started...

The 20" box fans we'll compare are:
A - Aerospeed BX100
B - Holmes HBF2002A
C - Kenmore 32002
D - Lasko 3720
E - Lasko 3721
F - Lasko 3723
G - Lasko 3733
H - Lasko B20201

DESIGN AND DETAILS:
---------------------

All have white fans and grills, gray enclosures, 245-260 square inch areas the blades pass through, and 70"-73" cords.

A - Aerospeed BX100
- Wavy grill (BX200/BX400 have other grills).
- Fan speed dial is on TOP.
- Little smaller enclosure (you wouldn't notice unless side-by-side), though the blades pass through an area near to the highest square inches of the bunch.
- The in-plug mini-fuse is easily replaceable if it blows.

B - Holmes HBF2002A (Target)
- Simple grid grill, blades have circle connecting them.
- Fan speed dial and plug connection are on the MIDDLE OF THE BACK. This is not ideal if bringing air into the house from a window and not an attractive option when exhausting out.
- The in-plug mini-fuse is easily replaceable if it blows.
- Looks exactly like the Kenmore 32002.
- NEGATIVE: At top speed it vibrates like crazy, enough to move itself.

C - Kenmore 32002 (Sears/Kmart)
- Simple grid grill, blades have circle connecting them.
- Fan speed dial and plug connection are on the MIDDLE OF THE BACK. This is not ideal if bringing air into the house from a window and not an attractive option when exhausting out.
- The in-plug mini-fuse is easily replaceable if it blows.
- Looks exactly like Holmes HBF2002A.

D - Lasko 3720
- Circular grill, blue logo on the front, blue speed dial.
- Fan speed dial is on TOP.
- Lasko promotes this as their fan of choice to PUT IN A WINDOW because it is more RAIN RESISTANT (not weatherproof).
- All Lasko in-plug mini-fuses are not replaceable.
- This is a wider (4 3/4") and thus fairly STABLE fan enclosure compared to some of their models.
- Should be mostly the same as 3721, except this has the blue logo.

E - Lasko 3721
- Circular grill, blue speed dial.
- Fan speed dial is on TOP.
- Lasko promotes this as their fan of choice to PUT IN A WINDOW because it is more RAIN RESISTANT (not weatherproof).
- All Lasko in-plug mini-fuses are not replaceable.
- This is a wider (4 3/4") and thus fairly STABLE fan enclosure compared to some of their models.
- Should be mostly the same as 3720, except no blue logo.

F - Lasko 3723
- Circular grill, blue speed dial.
- Fan speed dial is on TOP.
- Although it physically LOOKS LIKE one, this is NOT one of the rain resistant ones like the 3270/3721 (larger size, blue dial, etc.).
- All Lasko in-plug mini-fuses are not replaceable.
- This is a wider (4 3/4") and thus fairly STABLE fan enclosure compared to some of their models.
- LOOKS just like the 3721, larger enclosure and no blue logo. But again not a rain resistant model.
- NEGATIVE: Rattles a little at all speeds

G - Lasko 3733
- Simple grid grill.
- Fan speed dial is on TOP.
- All Lasko in-plug mini-fuses are not replaceable.
- NEGATIVE: Shakes a lot at settings 2&3.
- NEGATIVE: Listeners thought the hum tone was more annoying than the others.

H - Lasko B20201
- Simple grid grill.
- Fan speed dial is on TOP.
- All Lasko in-plug mini-fuses are not replaceable.
- NEGATIVE: LOUD at highest setting, listeners thought annoyingly so.
- NEGATIVE: Little more of an airplane hum/whine sound.

"(yelling over a fan) THEY SAY THEY ARE ALL QUIET!"
aka NOISE:
-----------

First some things that may help you get more out of this section on noise..

- It takes +10dBA to be perceived as a doubling in LOUDNESS.
- It takes just under +6dBA (5.85dBA) to be perceived as 50% (half-again) LOUDER.
- It takes just over +3dBA (3.22dBA) to be perceived as 25% (quarter-again) LOUDER.

(Note: When you read that +3dBA roughly doubles "sound pressure" that's different than perceived loudness)

Most sounds 50dbA on up have more of a potential to annoy, for example when while trying to talk, and especially starting at 55dbA (highly subjective, but gives you an idea).

Okay, now onto the comparison..

SUBJECTIVELY listeners liked the WHOOSH of air sound much more than that of the HUM of a rotating object. I noted next to the fan descriptions above which ones listeners felt had a sound they didn't like as much, regardless of loudness.

(A)
Setting.....2' away.....5' away....10' away
1.............48dBA.......45dBA.......43dBA
2.............55dBA.......52dBA.......49dBA
3.............64dBA.......60dBA.......57dBA

(B)
Setting.....2' away.....5' away....10' away
1.............59dBA.......55dBA.......52dBA
2.............63dBA.......60dBA.......57dBA
3.............66dBA.......63dBA.......60dBA

(C)
Setting.....2' away.....5' away....10' away
1.............58dBA.......54dBA.......51dBA
2.............62dBA.......60dBA.......56dBA
3.............66dBA.......63dBA.......60dBA

(D)
Setting.....2' away.....5' away....10' away
1.............55dBA.......51dBA.......48dBA
2.............62dBA.......58dBA.......55dBA
3.............66dBA.......63dBA.......60dBA

(E)
Setting.....2' away.....5' away....10' away
1.............55dBA.......51dBA.......48dBA
2.............62dBA.......59dBA.......56dBA
3.............68dBA.......65dBA.......62dBA

(F)
Setting.....2' away.....5' away....10' away
1.............56dBA.......51dBA.......49dBA
2.............62dBA.......58dBA.......56dBA
3.............67dBA.......63dBA.......61dBA

(G)
Setting.....2' away.....5' away....10' away
1.............60dBA.......55dBA.......52dBA
2.............66dBA.......62dBA.......59dBA
3.............70dBA.......66dBA.......63dBA

(H)
Setting.....2' away.....5' away....10' away
1.............63dBA.......59dBA.......57dBA
2.............68dBA.......64dBA.......61dBA
3.............71dBA.......67dBA.......65dBA

POWER USAGE:
--------------

We see below that the difference in yearly electrical cost is fairly small, and of course much less than air conditioning. If a little additional on-going expense for a fan makes this much less costly alternative to air conditioning more palatable, then that's probably a good investment.

However, being green is an important factor for some folks, so here below is a comparison in electricity usage I measured.

(A)
Setting.....Watts.....Annual Cost 12hrs/d 90d/yr 10cents/kWH
1.............45W......$4.90
2.............55W......$5.90
3.............68W......$7.30

(B)
Setting.....Watts.....Annual Cost 12hrs/d 90d/yr 10cents/kWH
1.............52W......$5.60
2.............61W......$6.60
3.............70W......$7.60

(C)
Setting.....Watts.....Annual Cost 12hrs/d 90d/yr 10cents/kWH
1.............49W......$5.30
2.............60W......$6.50
3.............68W......$7.30

(D)
Setting.....Watts.....Annual Cost 12hrs/d 90d/yr 10cents/kWH
1.............74W......$8.10
2.............92W......$9.90
3............110W.....$11.90

(E)
Setting.....Watts.....Annual Cost 12hrs/d 90d/yr 10cents/kWH
1.............74W......$8.10
2.............95W.....$10.30
3............111W.....$12.00

(F)
Setting.....Watts.....Annual Cost 12hrs/d 90d/yr 10cents/kWH
1.............71W......$7.70
2.............90W......$9.70
3............105W.....$11.30

(G)
Setting.....Watts.....Annual Cost 12hrs/d 90d/yr 10cents/kWH
1.............58W......$6.30
2.............67W......$7.20
3.............84W......$9.10

(H)
Setting.....Watts.....Annual Cost 12hrs/d 90d/yr 10cents/kWH
1.............60W......$6.50
2.............66W......$7.10
3.............83W......$9.00

AIR VELOCITY:
--------------

The 5' and 10' were measured straight ahead from fans. The fan surface measurement was done roughly 1/2 way up the fan blades right against the grill.

On fan surface air velocity half-way up a blade at one point is, of course, just a sample point, and air velocity at a distance can be greatly affected by the degree of focus/dispersal. Nevertheless, I hope this air velocity info helps us get a better sense for the differences between the fans.

(A)
Setting.....Fan_Surface.....5' away....10' away
1................5.7mph......2.3mph......1.6mph
2................7.1mph......3.1mph......2.1mph
3...............10.6mph......4.6mph......2.6mph

(B)
Setting.....Fan_Surface.....5' away....10' away
1................7.7mph......3.2mph......1.6mph
2................9.5mph......3.9mph......2.0mph
3...............11.2mph......4.2mph......2.1mph

(C)
Setting.....Fan_Surface.....5' away....10' away
1................7.7mph......3.6mph......2.1mph
2................9.8mph......4.6mph......2.6mph
3...............10.4mph......5.2mph......2.9mph

(D)
Setting.....Fan_Surface.....5' away....10' away
1................8.0mph......3.1mph......2.4mph
2...............10.6mph......4.6mph......2.7mph
3...............13.1mph......5.0mph......2.9mph

(E)
Setting.....Fan_Surface.....5' away....10' away
1................7.8mph......3.6mph......2.0mph
2...............10.5mph......4.5mph......2.6mph
3...............13.2mph......6.2mph......3.0mph

(F)
Setting.....Fan_Surface.....5' away....10' away
1................8.2mph......2.8mph......1.9mph
2...............10.6mph......4.1mph......2.6mph
3...............12.6mph......5.0mph......3.4mph

(G)
Setting.....Fan_Surface.....5' away....10' away
1................6.8mph......3.0mph......1.6mph
2................8.9mph......3.7mph......2.0mph
3...............10.9mph......4.6mph......3.5mph

(H)
Setting.....Fan_Surface.....5' away....10' away
1................9.4mph......2.9mph......2.3mph
2...............11.6mph......4.6mph......3.2mph
3...............13.3mph......4.9mph......3.9mph

SELECTING A FAN:
------------------

I removed these fans for excessive shaking, rattling, noise, and/or hum/whine: (B)Holmes,(F)3723,(G)3733,(H)B20201.

I then removed one fan for the center placement of dial and plug connection due to non-ideal position for window placement: (C)Kenmore.

This leaves these to choose from:
(A) Aerospeed BX100
(D) Lasko 3720
(E) Lasko 3721

Some other little Aerospeed BX100 (Fan A) comparative details:
- Option of lowest air velocity and noise would be of interest if someone will be very near.
- Replaceable in-plug fuse in case it blows, the Lasko ones aren't replaceable.
- Classic all-white front if you prefer that (like 3721 but not like 3720 with its blue logo).
- The option of a little quieter at the very low end of the loudness range.
- Lower electricity usage.

Lasko 3720 and 3721 (Fans D&E) for their part give the option of a little more air velocity at the very high end of the velocity range.

The Lasko 3720 and 3721 also look a bit different than the Aerospeed BX100, so looks may be another deciding factor for you.

Note that for any given loudness or air velocity they overlap in, these models have very similar sound/velocity profiles. That is, when comparing points where air velocities are roughly equal for the fans (at the same distances), the loudness difference is so small I can hardly tell which is louder and the numbers support that.

So there it is, my favorite three and some ways to compare them.

SUMMARY:
----------

In the end these are just classic 20" box fans which are more similar than they are different. Hopefully whichever you choose won't be a lemon and will work for many years. Perhaps somewhere above you'll find information you can use to choose the best fan to meet your needs.

Whatever you get, if it rattles, shakes like crazy, makes an annoying hum, etc., try exchanging it for another, don't settle, there are less annoying fans out there and you'll be listening to them for many years to come.

I hope this helps someone :).

SHOPPING NOTE:
----------------

Millions of 20" box fans are sold in the U.S. every year. Review sites cannot get anywhere near a statistically valid user sample, so although we learn from comments about DEFECTS and EARLY FAILURE, I suggest not filtering out a model based entirely on them.

There are also old reviews that have already been acted on by manufacturers to improve the product or fix a description, thus the review may no longer be accurate.

That said, defect and early failure comments with details are great for FEEDBACK TO THE MANUFACTURER (or author) and to help us all much more quickly SPOT SIMILAR ISSUES and thus get an exchange while it is quick and easy to do. Again though, I wouldn't use them to filter out a model entirely.
2828 comments| 625 people found this helpful. Was this review helpful to you?YesNoReport abuse
We have had two of these running in our 2400 square foot house pretty much nonstop during the spring with 20 X 20 inch air filters duct taped to the back. The fan pulls the air through, trapping the pollen and greatly reducing our symptoms. Since 20 X 20 filters are cheap we can replace them as needed.
Cheapest and simplest air cleaners we have ever used. Planning on keeping the filters on when we run them in the summer to pull cool air into the house to minimize the dust and pollen pulled in from outside.
2323 comments| 153 people found this helpful. Was this review helpful to you?YesNoReport abuse
VINE VOICEon June 13, 2007
This is probably THE cheapest box fan money can buy. It's also the narrowest fan I've ever seen. This thing probably isn't five inches wide and maybe less than that. Yet it does blow a nice breeze. It's fairly well made and the controls are easy to read (something we baby-boomers appreciate) and the dial-type switch doesn't have a mushy feel, but has distinctive notches so it switches from speed to speed with ease.

It's not too strong and you'll *never* hear anyone yell, "turn that fan down, it's blowing me away!" It's as noisy as you'd expect a $20 fan to be. I like a little white noise when I go to sleep, so this is fine for me. There are some that may find the loud whirring of the motor annoying.

For $20, I'd say it's a real dandy and does a fine job of keeping the air moving. It's a sweet deal and while I've only had mine for two months, I'm fairly well pleased with its performance to date.
11 comment| 64 people found this helpful. Was this review helpful to you?YesNoReport abuse
on June 25, 2008
This is an in-depth video review of Lasko's most recent entry into the premium three-speed box fan market. We will cover all of the bases here, including: manufacturing quality, speed settings, and relative sound levels compared with other box fans.

Summary: We love this fan!

UPDATE 7/14/2010: The Lasko in the video has unfortunately perished as a result of the actions of dastardly neighborhood pests. I can't go into detail because of pending litigation, but nevertheless the fan was still going strong after nearly *three years* in service! The upside? This model is still produced! Thank the heavens! So we've bought another. The new model is as well-built as the last. Nothing blows like a Lasko!
2020 comments| 203 people found this helpful. Was this review helpful to you?YesNoReport abuse
on July 27, 2013
I expect a fair amount of white wind noise with a box fan, but when I received this fan it also had a far more obnoxious rubbing/clicking sound it would make every rotation. I noticed a few other reviews seemingly complaining of the same problem so I thought I'd post the fix that worked for mine - I unscrewed the front cover, pulled off the fan blade from the motor (a little tough to do with just your hands so pry one side with a screwdriver while pulling on the other side with your fingers and it should slide right off) and found a little plastic burr on the back of the fan blade that was rubbing against the motor casing and making the noise. I shaved that off and now there's no additional noise other than the expected air noise you get with pretty much any high CFM box fan. Four star product docked to three since I had to perform this fix.
44 comments| 18 people found this helpful. Was this review helpful to you?YesNoReport abuse
on August 1, 2009
buy this fan. don't wait get it before it's discontiued. this is the lasko gallaxy 3723 premium box fan the most powerfull box fan on the market.it runs at 3623 cfm on high speed at 150 watts.if you want air volume then this is it.most box fans run around 2100 to 2250 cfm on high speed.so this one blows them away.i purchased several to put away for future use.seems like every time they make a good product it gets discontiued.all your newer fans have a fuse in the plug so if your fan dies on you check the plug.easy fix cut it off and replace it with a new plug.also keep your fan clean and you will get alot of use from it.also oil the bearings they claim you don't need to but i still do.lay your box fan down and just put a couple of drops of oil on it. leave it sit for about 10 min and the oil will seep in to the bearing.remember never run a fan in a closed up room.it will overheat the motor.fans need to draw air to keep the motors cool.if you have it in a large living room dinning room area its probably ok. but in small to medium size rooms crack open the door or window. i have seen alot of people returning fans that have died after acouple of weeks from using them in there closed up bedrooms.overheated the motor. fan went kaput (lol)this is the best fan you can find in todays market.just remember box fans are noisy by nature they move alot of air. so if you are looking for a quiet fan stay away from box fans.i sleep better with the noise of a box fan.
77 comments| 56 people found this helpful. Was this review helpful to you?YesNoReport abuse
on September 18, 2013
I have bought many variations on different models of Lasko fans over the years.
To date, I have never had the problems with any of those other ones that I have with this Model #3723 Box Fan!
As soon as I turned it on, it made a very loud clicking noise as the blades rotated.
It was loud enough to be very distracting/annoying!
There was also a strong burning plastic-y smell coming off the fan.
To reiterate, I've never had these particular problems with ANY of the other Lasko fans I've had in the past!
I believe this model is a dud and possibly a hazard!
Would like to return it if possible.
0Comment| 7 people found this helpful. Was this review helpful to you?YesNoReport abuse
on July 18, 2013
I love this fan! It moves a lot of air. At higher speeds it is a bit noisy, but I like the white noise for sleeping. I usually don't use it at high speed though; low and medium move more than enough air for my needs. It is sturdy and has given me no problems. Even after being on for 2-3 days at a time, the motor doesn't warm up, which is a great sign. It is pretty big and fits comfortably into a window. On cooler nights and mornings I use to it cool down the apartment without having to resort to using the a/c. It isn't very heavy so it is easy to move it around to the room where I need it. The only issue I have is that I wish the cord was a bit longer than 5 feet. I am seriously considering buying another, since this has been such a great buy!
0Comment| 5 people found this helpful. Was this review helpful to you?YesNoReport abuse
on June 25, 2013
I bought this fan based on the good reviews (I mean, as good as reviews for a box fan can be) and as soon as I received it, I plugged it in and turned the knob and... nothing. At all. I tried a few different outlets - nothing at all. I assume I got a defective one, and Amazon was super helpful in the return process, but regardless, I can't say anything good about a fan that doesn't blow. Despite this, I may order a new one, since it appears to be the only box fan available with Prime shipping.
0Comment| 6 people found this helpful. Was this review helpful to you?YesNoReport abuse
on July 3, 2013
This is a good quality fan. The metal frame sets it apart from other plastic frame fans. I gave my old 'brand-x' 20" plastic frame box fan to a friend who just needed a fan. That old plastic one would move air but it would also make noises like the case was coming apart. On full speed it would want to tip over backwards so I would need to brace it against a chair. I have had other plastic frame fans over the years that behaved the same way.

The Lasko 3723 will run on full speed with only the sound of the fan moving air, no strange rattling sounds. It is heavy enough to stay in place without wanting to tip over. The Lasko also seems to move more air than any other box fan I have owned.

An added benefit, for me, is that it is assembled in the USA. At least some of the money I spend gets to stay in This Country, for a change.

If you are unhappy with this fan I would recommend getting a plastic frame one so that you will have something to compare it with.

Enjoy.
0Comment| 4 people found this helpful. Was this review helpful to you?YesNoReport abuse

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