Solar Attic Fan Discussion HERE

30wgray1Dremington-solar-attic-fan-30watto you have a hot attic? Do you have a hot garage? Do you want to discuss sizing options? Do you have ridge vents? All comments welcome!

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  1. Hi, in a humid tropical climate, does the fan remove the hot dry air in the attic, and pull in more humid air from the outside, possibly leading to humid attic conditions (i.e. not good for wood rot, termites etc.) Or is it better to just let it be hot and dry air up there?. In other words, is it an ok practice to blow out the hot dry air and replace it with more humid air pulled in from the outside by the fan?

    • We typical recommend that ventilation and moving air is a good thing. Typically hotter air can hold more water. Therefore, it is likely that your attic is wetter than outside. However, you’re not going to feel “wind” or blowing through your attic. It’s simply ventilating a large body of air through your attic. The humidistat that is built into your fan should move the humid air out when necessary (even below the thermostat setting of 80 degrees).

  2. In your ‘show and tell’ podcast, you suggest installing the solar attic fan five feet below ridge vent and yet you mention that any static vents within 10 feet should be closed off. If that is the case, shouldn’t the solar fan be lower than 5 feet below the ridge vent. In other words, if the solar fan can draw air in from the static vents within 10 feet, wouldn’t the solar fan draw air in from the ridge vent at 5 feet from the fan? Would it be beneficial to move the solar fan even lower than 5 feet down from ridge vents?

    • Great point, however, assuming that your ridge vents are higher than where your fan is installed, you only need that 5 foot distance because the hot air will be rising. If you have another static vent nearby at roughly the same height then the air could conceivable travel laterally across your attic. I’m probably not being clear, sorry. In other words, if you create a chimney effect, then your hot air will be moving up quickly. Otherwise, simply keep your other open vents away from your attic fan.

  3. lack of ventilation is costing me a new roof. We live in southern Va., and have a 2 story house with 1800 square feet of attic space. about 1/2 of that space is occupied by a finished 3rd floor that limits air flow access to the 4 passive turbine vents on roof. there is adequate eave ventilation, but nowhere for the air to go. I want to try 2 30watt fans , one in the “open” space and one over the 3rd floor to try to draw air into that narrow space with limited air access. The heat in the attic has cooked the shingles, decreased effectiveness of AC and has caused all kinds of condensation issues with ductwork. Is my plan solid?

    • I think you will be pleasantly surprised. I’m also glad you are going with 2 30W fans. It’s best to get as much ventilation as possible.

  4. I have had 2, 30 watt solar attic fans for about a year now. One of them has stopped working for about a month now. It is not the thermostat. The motor is making noises and sticking.The fan will turn 180 degrees and stop briefly and turn again and stop. Can I replace the motor?

  5. I am considering replacing 2 existing mushroom style roof vents with solar vents. I have about 1600 sq ft attic in central Texas. The roof sections do not face south however. Would the tilted panel units make up for a north facing roof? Or is it necessary to add holes to the street side of the house, which faces south?

    • Yes, the tilt should take care of it. Just make sure that the sun will hit those tilted panels. Meaning, the exiting vent holes should be high enough to take advantage of the tilt and hit the sun. (Can’t be in the shade)

  6. Greetings
    I have a 5000 sqft metal commercial building in Central California. How many 30w vents should I use to bring down the inside temperature.

  7. I had the 30 watt unit for 4 months now. Recently, the fan makes a clicking noise because it’s trying to rotate but does not. This only happens in the AM when the sun hasn’t fully hit the panel. It’s eventually spins full force once the sun is directly on it. Do you recommend greasing the motor with a silicone spray to loosen it up?

    • Great question. The fan motor will operate when there is 9V or more. Otherwise, it may “vibrate” back and forth until the sun gets a little stronger. This is a natural function of the fan that uses solar.

  8. Hello, I purchased a 20 and a 30 watt fan. The 20 is for y garge an the 30 is for my attic. I have a 1500 squar foot house, I am confident that the 30 will be great. My garage is a 20×25 two car. I am worried that I did not purchase a large enough fan for the entire garage, Can I return this fan with out the box? Is the 20 watt fan enough or more than enough to pull the hot air out?

  9. I live in 3550 sq ft 2 story house in southern california, the upstairs bedroom gets very hot, will installing attic fan help cool down the bedrooms upstairs & how many fans would I need ?

    • Assuming that your 2-story means that the upstairs is 1,775 sq ft? If so, then I would go with 1 25W (or even a 30W. For the price difference, after tax rebate, you’re talking only $35 difference). It will definitely help cool your attic, your upstairs, and your house.

  10. I need to ventilate a storage room (converted garage). It is 16′ x 20′. I calculated it to be about 3200 cf. from wall to wall, floor to roof. Will a 20 watt fan be enough? Trying to keep the cost down. I live in Los Angeles. Thanks!

    • For a storage room, your best bet is one 30-Watt. For the price difference (especially after the tax rebate), you’ll get a lot more ventilation power.

  11. I have an 1850 sq ft home in Fort Worth, TX and I’m looking at the 25 or 30 Watt models

    I have an existing “passive” vent (no fan, just air) almost directly above my unit in the attic. I don’t know the dimensions of the vent, but it appears to of size necessary to replace with your product.

    Also, my research has also uncovered some of the anti-attic fan crowd–saying that such products will only suck out conditioned air from your HVAC unit and the house itself, thereby making it MORE expensive to cool your home.

    What say you about such claims?

    To my knowledge, it does not appear my home is all that “leaky” when it comes to conditioned air in to my attic–I was in my attic a couple weeks back doing some work and can attest to the heat and humidity up there compared to my living space

    • You will do well with the 25W or the 30W. For the money, go ahead and go with the 30W. You’ll be glad you did.

  12. I need to replace a no longer working electric powered attic vent fan.
    1. Circular hole already exists between 16 inch joists. Hole appears to be (hard to measure precisely) more like 15-16 inch diameter. Will this create problem to install any of your solar powered unite which I think call for 14 or 19 inch diameter hole?
    2. Any reason to buy/install AC adapter at initial install time (I will be hiring someone)or is it just as easy to buy/install at later date …if I deem it is needed after get some experience with unit?
    thx

    • Great questions. You can easily retrofit an existing fan hole. You can also buy the adapter in the future. You can easily install later without any tools (as long as you have a 110V outlet in your attic.

  13. I am in Central Florida. The house is 2000 sf under roof. When it rains and it will, can water get past a 30W fan if the panel is tilted ? What are the odds of it sucking up any insulation?

    • Anything possible, but for the most part, you should stay dry. We’ve heard of a few drips coming in, but nothing serious. Also, it cannot suck up insulation. It’s moving a large volume of air, and it doesn’t have the ability to disturb blown-in insulation.

  14. i am interested in purchasing the 30 watt model my question is on a 1600 sq ft home in central texas about how much difference in attic temperature should i expect in the texas heat of summer? any idea on rough estimate of electricty/cooling savings i could possibly expect?

    • Great question that we seldom answer! The reason is every house is different. Different in so many ways. That’s not a cop out answer, but I can tell you my 2,300 sq/ft home saw a decrease from 155 to 120 in a Texas August. That’s a huge drop and it made a huge difference. The differentiating factors for you will be location, insulation, thermal properties of house, location of fans, etc. However, overall, most customers are very pleased with the performance. It’s typically an obvious improvement.

  15. I’m looking at getting the 30-watt solar fan, plus hybrid adapter.
    2 questions:
    1. Is there a way to turn off the fan if there is any issue (or just say it is too loud, although I know it is not supposed to be) during the day?
    2. Is there any remote control that can let you turn on/off the fan from inside the house?
    Thank you-

    • 1. No 2. No. You need to leave the adapter connected to the solar. However, noise will not be an issue. Just set it all up and let it do it’s thing. It’s designed to keep you more comfortable and save you money, just the way we built it.

  16. I recently ordered an adapter for the 25W solar fan. As mentioned in the instructions the 115v power should go to the adapter prior to connecting it to the solar fan to prevent damaging a chip in the adapter. I live in an area with above ground power lines, sometimes causing unexpected power outages.
    What happens to the chip during such an outage at daylight with solar power going to the adapter and no 115V from the net? Will the chip be damaged?

    • We actually get that question a lot. The warning applies to a component in the adapter which manages the power information between the 110V and the solar panel. That component has recently been modified so the warning does not apply, but it’s still definitely a good idea to keep both plugged in. A power interruption should not be a problem.

    • Theoretically you can use it, but you will need to splice the new cable into the existing cable with wire connectors, then insulate. It will work just fine.

  17. I have a very low pitch on my tar and gravel roof, perhaps 2on12. Do I need a curb, how tall, how do I flash the curb and seal it? And finally, how do I seal the solar attic fan to the curb? I need your help, detailed drawings and instructions would be greatly appreciated. Ed,,,,,,Sonoma, California

    • You’re probably good without a curb mount, but they are helpful to raise the unit off your roof. It’s mainly to protect from standing water. (Commercial and Industrial applications)

  18. I just had the Remington Solar 30 solar watt attic fan installed. I also purchased the The 110V solar adapter kit.

    RE: The 110V solar adapter. On the bottom of the adapter there is a label:

    WARNING!
    Follow these steps exactly to prevent electrical damage to your fan and adapter!
    1) Unplug your thicker adapter wires underneath your fan FIRST
    2) Plug your 110V adapter into your 110V power source SECOND
    3) Plug the adapter wires to your Remington Solar attic fan THIRD
    (You don’t want solar power (DC) going to your adapter without 110V (AC)

    MY QUESTION…
    If I understand this correctly, once the 110V solar adapter is CONNECTED to the fan… you can NEVER UN-PLUG the 110 V AC source while the sun is out, and the solar panel is providing solar power to the van. Is that correct?
    I ask because my 110 V (AC) power source is on a “switched outlet”, making it convenient to turn the 110V (AC) power on/off without climbing to the top of the attic to unplug it.
    The way this “WARNING” label reads… Once connected with 110 V AC power, you can never REMOVE AC power, without damaging the fan or adapter. Am that correct or am I missing something here?

    • Sorry for the scary warning. Just means that you cannot put a switch on it. However, in case of a temporary power outage, you should be ok. You just don’t want the sun shining on the panel without constant 110V power on the other side. This confuses the microchip in the adapter. We have actually made some changes to the adapter so this isn’t critical, but it’s still a good idea to keep both power sources connected.

  19. Can’t sign on to your web site to register my fan!

  20. I have a small, 1920’s Bungalow style home (about 1000 sqft). My roof design does not have soffit vents, nor a ridge vent. Instead I have a number of box style static louver vents spaced across the north pitch of the roof. My roof has a north and south pitch (nothing east/west), and there are no vents on the south pitch. Vents appear to be 8 in circles (total of 4)

    Is there a minimum number of static vents that I’d need to help feed the attic intake as the fan exhausts?

    • You may need to add some kind of intake ventilation. Please call our office at 214-257-8300 and we’ll help you out.

    • They do NOT have Miami-Dade certification. We sell a lot of fans to Florida, but it’s primarily in northern Florida or where a Florida inspection certificate is not required. Please check with your local inspectors if an inspection is required. (Just FYI, we are Texas Windstorm Certified and our fans are quality products. Florida requires excessive “testing fees” which we cannot justify.)

    • No they are not. However, we sell lots of fans to Florida. They are not Miami-Dade certified, but are better than many brands that are. Check with your local inspector before purchasing.

  21. The solar attic fan is great (excellent), this a must have unit, I’m very satisfied, and I also recommend it a must have for a hot attic.

  22. Why can’t I find the product manual for the 110V solar adapter?

  23. If I was approved as a distributer in Sacramento, CA, why would homeowners buy from me rather than Home Depot? I’m from the pest control industry and licensed to sell services on practically every kind of pest. What product are you using to kill the mosquitos?

  24. what is the warranty on 25 watt solar attic fan?

  25. Schools in CA and elsewhere are burning up. Air conditioning would be expensive and overkill. Can your product work to vent from a classroom directly from classroom through the ceiling, limited insulation, and roof?

    Do your fans have sensors to know when they should be venting?

    We have lots of classrooms, so perhaps experimenting with a few of the worst cases would be where we would start. This room has hit 84 degrees all week long with fans running overtime. There is no way to vent the room through low windows. The room is 33′ by 30′ so about…1000 sq ft…the ceiling slopes from 9’5 to 12’… so.. something like 10,000 cu ft.

    Are there contractors in the Menlo Park (94028) area that could do the work??

    BIG BUCKS for the company that figures out how to cool classrooms down efficiently across CA and the sunbelt!!

  26. We live in NY and main concern is keeping attic below freezing in winter when the sun is shining on roof where the snow is partially melted. How does the thermostat work in the winter?

    • Thanks for the question, Dave. The thermostat is designed to turn the fan on above 80 degrees. In winter, your fan will not activate below 80 degrees, UNLESS it is above 60 percent relative humidity. In northern climates, wet attics in the winter are much more of a problem. Ice damming can also occur. Our fans are designed to be as important in summer to hot climates as they are in winter in cold, wet climates. Great question!

  27. Hi. I have a 2300 sq/ft house in Phoenix AZ. I have seen your fans on HomeDepot.com and read the reviews. Wow. Great product. But how many fans do I need? I do have ridge vents but they don’t seem to be working very well.

    • Hi TJ,
      My immediate suggestion would be to buy 2 Remington Solar 30-watt fans (black or gray). You are right on the end specifications for a single 30 Watt, but I’d go ahead and get 2 to make sure you get the proper ventilation. You need at least 4 sq/ft of intake (soffit) ventilation per fan. With ridge vents, be sure to install you fans at least 5 feet away. Please contact us if you need any additional information at 214-257-8300.

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