| Produttore | Ventamatic |
|---|---|
| Codice articolo | VX2515SOLARGABLUPS |
| Dimensioni prodotto | 40,64 x 40,64 x 27,94 cm; 5,85 kg |
| Numero modello articolo | VX2515SOLUPS |
| Dimensioni | S |
| Voltaggio | 18 Volt |
| Wattaggio | 12.6 watt |
| Numero di articoli | 1 |
| Batterie/Pile incluse? | No |
| Batterie/Pile necessarie? | No |
| Peso articolo | 5,85 Kilograms |
Le recensioni migliori da altri paesi
Brandon
This gable mount fan works great so far
Recensito negli Stati Uniti il 28 novembre 2014Douglas Dill
Lasted less than four months.
Recensito negli Stati Uniti il 23 settembre 2020
D. Frazier
Works, but noisy, and not fast, and box is confusing.
Recensito negli Stati Uniti il 3 aprile 2011
D. Frazier
Recensito negli Stati Uniti il 3 aprile 2011
When I first installed this fan just a few days ago, I waited 10 minutes, keeping one eye on a thermometer that I had up in my attic. The temperature did not budge. It was 99 deg. F and it stayed 99 deg. F. The solar panel was getting lots of direct sun. I thought maybe it would take more time for the fan to show any results in my 1500 square-foot attic. So I returned to the attic the next day at the same time of day. The weather outside was about the same, or maybe a couple degrees warmer. My thermometer in the attic now read 100 deg. F. I was disappointed. But then I noticed that my thermometer was located two or three feet above the roof vent. I moved the thermometer to a point closer to the vent, and three or four feet below the fan. After an hour, the temperature was still 100 deg. F. So I unplugged the fan. The next day, with the fan still off, I went back up in the attic at the same time of day. The weather outside was the same as the day before (about 70 deg. F). The temperature in my attic was now 114 deg. F. So here is my conclusion: In a 1500 sq. ft. attic with one of these units installed (and adequate intake/soffit vents) one of these fan/solar panel units can potentially lower the temperature in some areas of the attic by as much as 15 degrees, particularly if those areas are lower than the fan location, and near to the fan. I have decided that I will need more fans and/or solar panels in order to lower my attic temperature as much as I need to. (I want as little attic warming as possible to prevent ice dams.)
The box has a chart on it that, according to one interpretation, suggests two of these units would be needed to ventilate a 1500 sq. foot attic. However, the chart is confusing. (See the images I have uploaded from the box.) The product description posted by the seller says one of these units can ventilate a 1500 sq. foot attic. This is not supported by the information on the box, nor by my own experience. The description posted here also says that the fan will move 1000 CFM "with additional solar panel". Not sure where this info comes from. I don't think I saw any concrete CFM numbers on the box, nor on the manufacturer's web site. Does "with additional solar panel" mean the included solar panel that comes with the fan, or do you have to buy a second panel to get the CFM up to 1000? I suspect the latter.
Arguably, one good thing about this model is that you can apparently boost the fan speed and CFM by linking up solar panels in a series. It is not clear exactly how much of a boost you will get with each additional panel, though I would expect a second panel would almost double the power of the fan. I have not done this, but I am probably going to try to do it. The solar panels have accessory cables that would appear to make linking panels together very easy. By using two or more panels, it seems you could not only boost the peak power, but you could angle the panels in different directions to assure that the fan would keep running at a steady clip as the sun moves across the sky.
The other problem with the fan is that it is noisy at times. In a quiet house you can sometimes hear it as it makes a distinctive humming noise. This noise comes and goes to depending on the speed of the fan. There is also occasionally a high pitched squeal as other reviewers have mentioned. The squeal is sometimes heard when the light level is very low. It is a sound reminiscent of the squeal made by my cordless drill when I just lightly press the trigger so that the drill barely starts to turn, but it is not as loud as my drill. Whether it is humming or squealing, the noise level is low enough that it is probably going to be tolerable in most situations. The sound would probably be masked by the sound of a central air conditioner, heavy traffic outside, high winds, a television, or even a noisy refrigerator. Adding insulation in your attic might be enough to block the sound, and is a good idea in any case. I would hesitate to put this fan above a bedroom, especially if you are a light sleeper. But it would be fine in a barn, greenhouse, etc. We are using it above our living room. We don't have much attic insulation, so we can sometimes hear the fan. It is tolerable for now. We are planning to add insulation, which should help block the noise.
A couple other things worth mentioning: There is no mounting hardware included, except for the cable-anchors. I had to jerry-rig my own mounting apparatus using "L" shaped corner braces bolted to the aluminum frame of the panel. The good news is that both the panel and the fan appear to be rugged and durable. Contrary to what one other reviewer wrote, the fan is not flimsy. In my opinion, the fan is built like a tank. It is all heavy metal. I am not sure if this is a good thing. The heavy blades require more power to turn than plastic blades. Perhaps the momentum of the heavy blades is helpful to maintaining the fan speed, especially on a partly cloudy day.
In retrospect, I would not have bought this fan/solar panel. It is noisy, and not very powerful. Also, the documentation is confusing and contradictory. But by the time I figured all this out, it was too late to return the item. Nonetheless, I think this unit would be helpful in some situations, especially where noise is not much of a concern. The price is at least reasonable given what the competition costs.
For my next solar-powered attic fan, I want to try [[ASIN:B0040QVXGK Rand Solar Powered Attic Gable Fan - 27 Watt Solar Panel - 1720 CFM Ventilator Fan - With Thermostat]] It appears to be a much more powerful fan for only a slightly higher price. It is advertised as quiet. I guess we will see.
Update 4/13/11: I put a few drops of oil on the fan axle about a week ago. The fan has been much quieter since then. I can still hear it in my living room occasionally, especially as the light is waning, but usually I can't really hear it. I am planning to upload a video that shows the fan in action and lets you hear the noise (before it was oiled).
Immagini presenti nella recensione
