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345SOBKSurface Mount, Solar Powered Attic Ventilator in Black

  • Overview
  • Video Links
  • Attic Ventilation Calculator
  • 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
  • Video Links

    Solar Powered Exhaust Fans - Danny Lipford

    Solar Options For Your Attic Ventilation

    Solar Powered Attic Ventilation - Pittsburgh Today - Live KDKA TV

  • 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.

  • CFM537
    Dome ColorBlack
    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
    RPMN/A
    Solar Panel Makeuppolycrystalline silicon
    Solar Panel Watts28
    SonesN/A
    Warranty6 Years/2 year motor
  • 345SOBK is rated 4.4 out of 5 by 9.
    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
    Rated 5 out of 5 by from Good product Easy to install and working like a charm. Haven't had a chance to evaluate the thermostat yet because the weather has been over 50 degrees in the daytime.
    Date published: 2014-06-14
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  • can a plumber easily get flashings for a corrogated iron roof

    Asked by: pedro
    Thank you for your question on the model 345SOBK solar powered attic ventilator. This unit is designed to be installed on a shingled roof. Please contact the Technical Service Department at 800-637-1453 for further assistance.
    Answered by: BroanCustomerService
    Date published: 2014-10-06

    How resistant is this to hail stone damage?

    Asked by: Jim
    Thank you for your question on the model 345SOBK solar roof fan. There has not been any testing for hail damage, but these have been out for about four years and we have not heard on anyone needing to replace or repair them because of hail damage. Please contact our Technical Support department at 800-637-1453 if you have further questions.
    Answered by: BroanCustomerService
    Date published: 2013-10-23

    solar life span

    What is solar module life span 2 years or 25 years? I know they tend to loose power but good one can work almost forever.
    Asked by: viktor
    Thank you for your question on the model 345SOBK solar operated attic ventilation exhaust fan. Please contact the Technical Service Department at 800-637-1453 for assistance.
    Answered by: BroanCustomerService
    Date published: 2017-06-16

    I recently installed a new 345SOBK fan and it appears the fan is not working. Can you help?

    Fan was working for first few days even in cloudy, rainy conditions. The weather has cleared and it is sunny but it is no longer working.
    Asked by: Dave
    Thank you for your question on the model 345SOBK, solar-powered attic ventilator. We would recommend that you contact our Technical Support Department directly at 800-637-1453 for more assistance. They will need to be able to speak to you directly and ask questions if necessary. Thank you.
    Answered by: BroanCustomerService
    Date published: 2016-06-02

    What is the warranty on this product?

    Asked by: Phil
    Thank you for your question on the model 345SOBK roof mounted solar attic ventilator. The motor has a two year warranty and the rest of the unit has a six year warranty.
    Answered by: BroanCustomerService
    Date published: 2014-06-05
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