Garden Last updated · owner ratings verified July 2026
Affiliate Disclosure
Some links on this page are affiliate links. As an Amazon Associate, we earn from qualifying purchases — at no extra cost to you. We do not buy, test, or physically handle the products we cover; our rankings come from aggregated owner reviews, ratings and expert consensus. Commissions never change our verdicts. How we rank · full disclosure.
Side by side
| Our pick Lasko Lasko Weather-Shield Performance Box Fan, 20 in. Best box fan $35–50 Check price | Lasko Lasko 3723 20 in. Box Fan Cheapest air moved $25–35 Check price | Vornado Vornado 660 Large Air Circulator (circulator, not a box fan) Not a box fan — a circulator $100–130 Check price | Vornado Vornado OSCR37 Oscillating Tower Air Circulator (tower, not a box fan) Not a box fan — a tower $110–140 Check price | |
|---|---|---|---|---|
| What owners rate it | ||||
| Owner rating | 4.1 / 5 (3,244) | 4.1 / 5 (842) | 4.7 / 5 (8,870) | 4.4 / 5 (1,170) |
| Specifications | ||||
| Format | Box fan, 20 in. | Box fan, 20 in. | Floor air circulator — not a box fan | Oscillating tower circulator — not a box fan |
| Airflow pattern | Broad low-pressure sheet | Broad low-pressure sheet | Vortex column, whole-room circulation | Vortex circulation, whole room |
| Window mounting | Fits a standard double-hung sash | Fits a standard double-hung sash | No — floor unit only | No — floor unit only |
| Motor | AC, weather-resistant | AC, indoor use | AC | AC |
| Speeds | 3 speeds | 3 speeds | 4 speeds | 4 speeds |
| Controls | Manual rotary dial | Manual rotary dial | Manual dial on the housing | Touch panel and docked remote |
| Cleaning access | Sealed housing — compressed air only | Sealed housing — compressed air only | Grille removes tool-free for washing | Sealed housing — compressed air only |
| Warranty | 1 year limited | 1 year limited | 5-year limited | 5-year limited |
| Who it suits | ||||
| Best for | Windows, garages, porches and anywhere damp | A spare fan for a bedroom, a workshop or a rental | Evening out a whole large room rather than blowing at people | Circulation in a room with no floor space to spare |
Ratings are aggregated Amazon owner ratings, not our own testing. Figures verified July 2026.
Pros and cons
Lasko Weather-Shield Performance Box Fan, 20 in.
- The weather-resistant motor is rated for garages, porches and damp spaces where an ordinary fan should not live
- The wind-ring housing measurably increases output over a bare box fan of the same size
- Moves more air per dollar than anything else in this comparison, by a wide margin
- Nothing to fail — no board, no remote, no oscillation gearbox
- Loud at every speed; this is a ventilation appliance, not a comfort appliance
- No oscillation, no timer, no remote, no thermostat
- The housing does not open, so dust builds on the blade over a season and stays there
- Rating pool is respectable but the average sits lower than the Vornado units here
Lasko 3723 20 in. Box Fan
- The lowest price per cubic foot of air moved anywhere in this comparison
- Light enough at around 7 lb to carry between rooms one-handed
- Doubles as a white-noise source, which a surprising number of owners buy it for
- Cheap enough that replacing it after a few years is not a decision
- Plain indoor motor with none of the Weather-Shield model’s damp tolerance
- Noticeably louder than a tower fan for the same perceived breeze
- Small owner-rating pool relative to Lasko’s tower fans
- No grille access at all, so cleaning means compressed air outdoors
Vornado 660 Large Air Circulator (circulator, not a box fan)
- The vortex column reaches the far wall and returns, which a flat box fan cannot do at any speed
- The grille releases without tools so the blade can be properly washed rather than blown at
- Highest owner rating in this comparison, from a large and long-established pool
- Five-year limited warranty against Lasko’s one
- Roughly three times the price of a Lasko box fan
- Will not sit in a window, which is the single most useful thing a box fan does
- Does not oscillate; you aim it with a 90-degree tilt and leave it
- Four AC speeds, and the lowest is not quiet enough for a light sleeper
Vornado OSCR37 Oscillating Tower Air Circulator (tower, not a box fan)
- Combines Vornado circulation with a genuinely small footprint
- Smooth continuous oscillation rather than the stepped sweep of most towers
- Touch controls plus a magnetic remote dock, so the remote stays with the fan
- Same five-year limited warranty as the floor circulators
- The most expensive product here and it moves far less air than a $30 box fan
- Smallest owner-rating pool on this page, so the long-term picture is thin
- A tower is the least effective shape for the vortex principle Vornado is built on
- Nothing about it fits a window or tolerates a garage
Decision factors
What you actually pay
A Lasko box fan is $25 to $50. A Vornado circulator is $100 to $140. That is a three-to-four times multiple, and no amount of engineering argument makes a circulator a cheaper way to move air. On pure cubic feet per dollar, Lasko wins this comparison so decisively that the number is not worth writing out.
What Vornado charges for is the warranty and the serviceability. Five years against one is a genuine difference on a device with a spinning motor, and Vornado has honored it long enough for that to be a settled expectation rather than a marketing line. The removable grille matters more than it sounds: a fan blade caked in dust loses airflow and runs unbalanced, and being able to wash it in a sink is the difference between a fan that keeps working and a fan that quietly gets worse.
Power draw is close. Both brands use AC induction motors, and a 20-inch box fan and a large circulator both sit in the region of 50 to 90 W depending on speed. Neither is a meaningful line on an electricity bill — a box fan run overnight all summer costs a few dollars, which is the entire argument for using one instead of air conditioning where you can.
Neither brand has consumables. No filters, no belts, no bags. The only recurring cost is the cleaning time, and the only replacement cost is the fan itself. Because a Lasko is $30, most owners simply replace rather than repair — a perfectly rational strategy, and the honest reason the shorter warranty does not sting as much as the spec table implies.
Which one fits you
- Night flushing — pulling cool outside air through the house Lasko Weather-Shield Box Fan It sits in a window sash and moves enough air to change the temperature of a house, which no circulator can do.
- Garage, workshop, porch or basement Lasko Weather-Shield Box Fan The weather-resistant motor is rated for damp, dusty spaces that would kill an ordinary indoor fan.
- A large living room with hot and cold corners Vornado 660 Breaking up temperature stratification is a circulator’s actual job, and a flat box fan does not do it.
- Buying one fan to keep for a decade Vornado 660 A five-year warranty and a grille you can wash beat a $30 sealed unit you will replace three times over the same period.
If neither is right
- Hurricane Classic 20 in. Floor Box Fan The direct Lasko rival at a similar price, with a metal-reinforced frame that survives being knocked over in a workshop. A large owner-rating pool and a consistently strong consensus.
- Hurricane Pro Heavy-Duty High Velocity Metal Blade Floor Fan When you need genuine industrial airflow — metal blades and a rugged housing built for drying a basement or a paint job rather than cooling a bedroom.
- Lasko Oscillating Tower Fan with Remote If the box fan is going in a living room, the wrong thing about it is the format. A tower oscillates, takes almost no floor area and is far quieter for the same perceived breeze.
Which one should you buy?
Buy the Lasko. If you specifically want a box fan, this comparison is over before it starts, because Vornado does not sell one — the two Vornado products in the table above are circulators, which the format row makes explicit, and they are here so you can see what the alternative actually is rather than what a search result implies. Buy a Vornado only if, having read what a circulator does, you decide that is the job you needed done.
Why does Vornado not make a box fan?
Because the company’s entire design argument is that the format is inefficient. A box fan is a shallow blade in a flat frame, and the air it produces is a wide, slow, low-pressure sheet. That sheet loses its coherence within a few feet, which is why a box fan is superb pushed against a window and mediocre standing in the middle of a room.
Vornado builds deep-pitch blades inside a shaped duct that leaves the fan as a coherent column. That column reaches the far wall, spreads across it, and returns along the floor and ceiling, keeping the whole room’s air in slow circulation. From the company’s point of view, building a box fan would be building the thing it exists to replace.
Whether that argument matters to you depends entirely on your use case. For a window, it does not — the box fan wins, and it is not close. For evening out a large living room, it does, and no box fan will get you there.
What is a box fan genuinely best at?
Ventilation, not comfort. The single most effective use of a $30 box fan is not blowing on you at all: it is sitting in a window at night, exhausting warm indoor air while another opening lets cooler outdoor air in. That genuinely lowers the temperature of a house, which no fan pointed at a person ever does.
The second use is drying and clearing. A box fan on a wet basement floor, aimed at a freshly painted wall, or pulling fumes out of a garage is doing work no circulator does better per dollar. The Weather-Shield model exists precisely because owners kept using ordinary box fans in damp spaces and killing the motors.
The third use is white noise, which is a larger share of box fan purchases than anyone admits. It is a real reason to buy one, and it is also a reason to check the return policy: the noise character of a box fan is a broad rush, and some people find it soothing while others find it grating.
Does a fan actually cool a room?
No. A fan does not lower air temperature — it moves air, which speeds evaporation from your skin and makes you feel several degrees cooler. The motor adds a small amount of heat. Running a fan in an empty room is pure waste, which is a useful habit to break.
The exception is the window trick above, and it is a genuine exception because you are not cooling with the fan, you are exchanging the air in the house for cooler air outside. Done at the right hours it works well enough to delay switching the air conditioning on by weeks in a mild climate. The full method is in how to cool a room without AC, and the honest comparison against actual cooling is in fan versus air conditioner.
How much noise are you accepting?
A lot, with a box fan, and nobody should pretend otherwise. Moving that much air through a flat frame makes a broad rushing noise at every speed, and the lowest setting on a 20-inch box fan is roughly comparable to the middle setting on a decent tower fan. If the fan is going in a bedroom and you are a light sleeper, a box fan is the wrong purchase and a DC tower fan is the right one.
Vornado’s circulators are quieter for the volume of air they move, because the duct lets the blade turn more slowly for the same output. They are still AC fans with four speeds, and the lowest is not silent. Neither brand here is a bedroom fan in the way a brushless DC tower is — see DREO vs Lasko for that comparison.
Which lasts longer, and does the warranty matter?
Vornado, and yes, though less than the numbers suggest. Vornado’s AC circulators have a long, well-documented record of a decade or more of service, and the five-year limited warranty is the company acting on that. Owner reports of successful claims are common enough to treat the warranty as real rather than theoretical.
Lasko’s box fans routinely run for years too, and the usual failure is a bearing going noisy rather than a dramatic death. The reason the one-year warranty matters less is arithmetic: at $30 nobody ships a fan back, they buy another one. Over a decade you might buy three Lasko box fans and one Vornado, and the totals land in the same neighborhood.
The thing that shortens the life of any fan in this comparison is dust on the blade. It unbalances the assembly, cuts airflow and loads the bearing. The Vornado 660 lets you take the grille off and wash it. The Lasko fans do not open, so the method is compressed air from the outlet side, outdoors, once a season.
The bottom line
If you searched for a box fan, buy the Lasko Weather-Shield — it does the job, it tolerates a garage, and it costs a third of the alternative. If you searched for a box fan because you wanted a room to stop having a hot corner, you were shopping for the wrong product, and the Vornado 660 is what you actually wanted.
The full field is in our box fan roundup, with the format question covered in tower fan versus box fan. Related head-to-heads: Honeywell vs Vornado and DREO vs Lasko. Everything we publish is ranked from aggregated owner ratings and expert consensus rather than first-hand use — see how we rank.