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345SOWWSurface Mount, Solar Powered Attic Ventilator in Weathered Wood

  • Overview
  • Attic Ventilation Calculator
  • Video Links
  • Specifications
  • Accessories
  • Reviews
  • Answers
  • BROAN Solar Powered Attic Ventilators use energy from the sun to operate and require no additional electricity, which means you save up to $180 per year that you might pay to operate an electric powered attic ventilator, depending on your local electric rates, size of attic, climate, etc... Plus, you can save even more with a 30% Federal Tax Credit on both the purchase price and installation costs of your Solar Powered Attic Ventilator. Because BROAN Solar Powered Attic Ventilators operate without fuel, waste, or pollution, they earn points towards Green building. So you can save money on electricity without using any to do it, which is green for the environment, and puts some extra green in your wallet.

    • 28-watt solar panel captures sunlight from dawn to dusk and efficiently converts it into electric power to keep your attic cool and dry all day long, providing 537 Maximum CFM and year round protection for the structure of your home 12” diameter, one-piece aluminum 5-blade fan is pitched for maximum air flow to keep your living area cooler, extend the life of your air conditioner and save energy and money
    • Compact base footprint means fewer shingles to cut for easier, faster installation
    • Low profile, integrated design for an attractive, unobtrusive addition to your roof without the need for props or pivoting stands used by some manufacturers
    • Rugged, tempered glass solar panel withstands large hail and won’t delaminate so you can be confident in its reliability, functionality and attractive appearance
    • Housing is a molded design of UV-stabilized, color-dyed, rugged ABS plastic that withstands hail and resists fading to remain attractive for years; may also be painted to match your roof color
    • Housing frame features positive stops to “seat” the dome for fast, easy installation
    • Direct-current, variable voltage motor is dynamically balanced for superior performance and silent operation for years of worry-free operation
    • Includes stainless steel fasteners and galvanized steel brackets for durability and corrosion resistance, and aluminum, heavy-gauge screen to keep out insects, animals or birds without impeding airflow
    • Optional thermostat is easy to install and disables the motor when the temperature dips below 50-degrees, to extend motor life; recommended for climates where cold weather condensation isn’t a concern
  • Effective attic ventilation requires air to exit at or near the peak of the roof and replacement air to be drawn in under the eaves of the house, via soffit venting. The Home Ventilating Institute (HVI) recommends that powered attic ventilators provide at least 10 air changes per hour to equalize attic temperature.

    Use our Attic Ventilation Calculator to determine the recommended ventilation needs for your attic. Click here to begin.

  • Video Links

    Solar Powered Exhaust Fans - Danny Lipford

    Solar Options For Your Attic Ventilation

    Solar Powered Attic Ventilation - Pittsburgh Today - Live KDKA TV

  • CFM537
    Dome ColorWeathered Wood
    Dome Dimensions26.5" x 29.9" x 7.75"
    Dome Height from Roof9"
    Dome MaterialABS Plastic
    ENERGY STAR® certified productNo
    Fan Blade5 Blade Aluminum
    Housing Dimensions25.5" x 25.5"
    Insect/Critter ScreenYes
    Installation TypeSurface/Flush
    Maximum AmperageN/A
    Maximum VoltageN/A
    MotorDC Variable Voltage
    Optional ControlsYes
    Power TypeSolar Powered
    Remote Solar Panel/Dome Height from RoofN/A
    Roof Opening - DepthN/A
    Roof Opening - HeightN/A
    Roof Opening - Width14" diameter
    Solar Panel Makeuppolycrystalline silicon
    Solar Panel Watts28
    Warranty6 Years/2 year motor
  • 345SOWW is rated 4.5 out of 5 by 10.
    Rated 5 out of 5 by from Easy to install and works great. It lowered the heat in our home by 3-5 degrees on our hottest days. Making it much easier to cool in the evenings.
    Date published: 2017-11-15
    Rated 5 out of 5 by from Great fan and great customer service . . . I purchased one of these fans a year ago and something has caused it to stop running. I contacted them and they took great care of me by replacing it for no fees. Tammy the E-Data Coordinator was just great by taking the issue head on and sending my to their technical department where Chuck absolutely took care of the problem.
    Date published: 2017-08-18
    Rated 5 out of 5 by from simple easy to install might buy another one to give more flow thru the attic.
    Date published: 2016-09-23
    Rated 2 out of 5 by from It failed in a month, but keep reading... Within a moth of operation the motor failed. Until then the unit operated as promised and did a great job of cooling the house (we live in Hawaii). After noticing the unit wasn't operating I called customer service which transferred me over to Trish in the tech department. She assessed the problem to be the motor. The new motor was back ordered until 8/1 and I received it on 8/4. I've yet to get up on the roof and install it, but I'm confident it will do the trick. I'll let you know. But the purpose of this revue is to commend the Broan team on their excellent customer service. I didn't have to send copies of my receipt, go up on the roof to pull the old motor out and pay to send it to them, or pay shipping on the new motor... no hassles at all! (In spite of the complex legalese in their warranty) I was treated with respect and they stand behind their product. This is the way customer service should be! Thanks, Trish, and the crew at Broan!
    Date published: 2016-08-05
    Rated 4 out of 5 by from Powerful fan. Almost perfect product... This fan was a straightforward, simple install. It can move some serious air when the heat hits hard (100+ in my area)! I immediately noticed a big difference in my 1949 home. Unfortunately, after running for about two months, the fan stopped working because the bracing holding the motor got loose. The motor slid downward to the point where the fan blades started hitting the braces that attach the hood to the base. Eventually the fan blades got lodged against the bracing and the fan stopped moving. Luckily the motor did not burn out and I was able to shove in a couple of wedges and tie wraps to prevent this from happening again (see picture). This fan does run pretty hard so my guess is that the bracing wasn't tight enough coming from the factory. Other than that little issue, this is a great fan. A bit pricey for my taste but it's a simple DIY so it's worth the price.
    Date published: 2016-07-20
    Rated 5 out of 5 by from My customers love this upgrade! I've installed these fans in multiple customer's homes. They're always amazed at how cool their attic remains, even in the summer! We live in Texas, so you know just how hot it can get, but when these fan are installed correctly, the temps stay low enough that you can hardly break a sweat while moving those attic boxes around. I recommend installing these to all my customers. They not only help with attic ventilation but also prolong the life of their roof.
    Date published: 2014-12-18
    Rated 5 out of 5 by from Great Idea! Very easy to install. Awesome value! Love the solar powered feature. Speed varies with sunlight.
    Date published: 2014-10-08
    Rated 5 out of 5 by from Reduced temp and humidity in Attic Very pleased with the vent. We had an issue with high humidity in the attic and the fan has helped to equalize the humidity with the outside and reduced the temp which is an added plus. The fan makes noise, but it cant be heard once you close the attic door. Great product. Lets see how long it lasts!
    Date published: 2014-09-30
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  • We have one roof vent at each end of our 50 x 15 x 4 gable roof; no eave vents. Will this solar vent product work for us? Should we use a thermostat?

    We live in So. Calif., and the home is 100 years old. Vents are on west and east ends of house, and positioned in direction of max. air flow. (Winds from the west.)
    Asked by: Les
    Thank you for your question on the model 345SOWW solar operated attic fan. The 345SOWW is designed for attics that are a maximum of 3200 cubic feet and has a minimum of 2 square feet of inlet area. If your attic area meets these specifications, it should work fine for you. You should not need to use an additional thermostat. Please contact the Technical Service Department at 800-637-1453 for further assistance.
    Answered by: BroanCustomerService
    Date published: 2014-11-13

    Can it be hooked up to a battery for night time operation?

    I want to install this in a very small church that is off the grid for ventilation. Services take place in the evening so it is important that it will run when it is dark Thanks, Mel
    Asked by: M6
    Thank you for your question on the model 345SOWW solar operated attic ventilator. We have no option to connect a battery to this unit.
    Answered by: BroanCustomerService
    Date published: 2016-09-03

    Will the unit charge sufficiently on the north facing roof?

    Similar question was asked but the answer was insufficient. Here's your answer: "Thank you for your question on the model 345SOBK roof mounted solar powered attic ventilator. The installation instructions are only a recommendation of how and where the unit should be installed. Installation on the south, southwest or west side of the home normally gives you the best opportunity for the solar cells to receive the brightest and longest amount of sunlight." My roof is 12/12 pitch and the roofers for some reason decided to mount the units on the north-facing roof. Will the unit get enough sunlight to charge sufficiently?
    Asked by: Newtosolar
    Thank you for your question on Broan attic fans. I cannot honestly tell you if your unit will work properly. The solar power attic fan gets its power from the sun and will only run when the sun is out. How much sun does your roof get on the north side or is there anything shading it out certain times of the day like trees, building structures, ect. The solar power ventilator does not charge or store electricity. It runs when it has enough light to power the motor.
    Answered by: BroanCustomerService
    Date published: 2017-08-28

    Is there an on/off switch that can be added to the fan motor?

    Asked by: Nathan
    Thank you for your question on the 345SOWW solar-powered attic ventilator. We do not offer an on/off switch for this unit as it is completely solar powered. We do have the model CWT45, cold weather thermostat. This optional accessory disables the motor below 50 degrees for climates where cold weather condensation isn't a concern and to extend motor life. The thermostat activates the motor at temperatures above 61 degrees to vent air from dawn through dusk.
    Answered by: BroanCustomerService
    Date published: 2016-09-14

    Is there a wall mount thermostat for this product?

    Asked by: Les
    Thank you for your question on the model 345SOWW roof mounted solar powered attic ventilator. The only thermostat available for this unit is the CWT45, a cold weather thermostat that will turn the power off when the attic temperatures go below 50 degrees. The thermostat activates the motor at temperatures above 61 degrees to vent air from dawn through dusk.
    Answered by: BroanCustomerService
    Date published: 2014-03-26
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