Thursday, October 24, 2013

Lasko #3720 20" Weather-Shield Performance Box Fan



Over 12,000 hours of dependable operation...
While checking Amazon in the course of recommending this fan to a friend, I was surprised by the mediocre rating people had given it and decided to add my experience to the reviews. Like Richard Shrum above, I'm confused about what fan some of the negative reviewers were talking about. A few of their comments don't seem to compute with the fan I own, which has 3720 marked on its frame, matches the picture above, and is listed on Lasco's website.

I've owned mine since April 2005 and have run it as a window fan (on low) from eight to eighteen hours a day, for about 325 days each year, and it still operates as well as it did on day one. With this kind of use, I've sort of expected something to go wrong or burn out, but nothing has. All I've had to do is turn it on, turn it off, and clean it every four or five months - a fifteen minute chore.

As I was writing this, I got to wondering just what my use actually amounted to. Based on very conservative estimates, I...

Comparison of Commonly Found 20" Box Fans
This review is for: Lasko 3720 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:
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All have white fans and grills, gray enclosures, 245-260 square inch areas the blades pass through, and 70"-73" cords.

A - Aerospeed BX100...

A great Fan from Lasko
I have just purchased my second Lasko 3720 fan from "Wal-corp". I had two older model Lasko Fans that had been running 24/7 for about 3 years now. Never had any issue from them in the last 3 years, every so often I would take them outside and blow them out with high pressure air. Recently, one of the older models got to where is was difficult for it to start once the motor had cooled. The barrings were worn. The fan would still start after slowly turning for a few seconds, but I didn't want to take the chance of the fan not starting and the motor sitting there locked especially if I were away from the house and the power had dropped.

I decided to replace the fan and found the Lasko 3720 box fan, bought it and brought it home. I immediately noticed that is was quieter than the older model and still moved the same amount of air, if not a little more. Plus it has the "safety fused" plug which is a nice added feature. After running it for a week, I decided to spend another $20...

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