Master Flow Power Attic Vent Roof Mount Installation | GAF Roofing

[@4_years_left]

Just wired mine in today! It was sunny all day, not as hot as lately but still pretty warm out, and we didn't need to turn the AC on. Climbing in and out of the attic over and over to run the wire was not fun, but so worth it. There are lots of videos out there with guys saying attic fans are a rip off... They have no idea what they're talking about. I installed mine because in this house we just bought in March, I noticed a musty odour appear when warm weather arrived. I determined it was attic air swelling down into the living space, even though the attic already had passive ventilation and soffits everywhere. After today I am optimistic the forced ventilation kept the attic from getting too hot and thus I did not notice the stinky smell. Fingers crossed. Thanks GAF! And thanks for the install video.

[@functionalvanconversion4284]

I had the GAF wifi fan installed by a roofer earlier this year for Ice dam mitigation. The fan works well, but after dealing with ice dams on other buildings here is what I did prior to fan installation: 1.) Extracted all of my attic insulation (harbor freight 2HP dust collector), Air sealed all penetrations, sheet rock joints ,and any edge that could leak air with spray foam (great stuff). Installed mineral wool covers over can lighting, custom foam box covers over exhaust fans, speakers and other IC rated lighting. Installed 3" foam board between the attic floor rafters, followed by either R-38 fiberglass or Mineral wool R-20 depending on the area of the house. Finally, I re-blew (harbor freight 2HP dust collector) the insulation to a minimum R-60 on top as a third layer of insulation. I also went through and repaired baffles that had compressed to the roof deck and were preventing attic ventilation. 2.) Replaced flex duct vents that ran through the attic with foam core 4" PVC pipe since some of the runs were longer and I wanted the CFM of the exhaust fans to operate at rated output (I used a tool from amazon to test CFM to verify rated exhaust fan output). The flex duct was 15 years old (which is the duration of flex duct, so it was time to replace. Installed minimum R-38 on all duct work using fiber tape to reduce heat loss on vents. 3.) All north facing penetrations on the roof moved to the south facing side of the roof (in Central Washington ice damming is primarily a problem on the North facing side of the roof). This included a skylight, bathroom exhaust fans and any other penetration. The entire project took my wife and around 1 month working 7 days a week. My apologies if you read this long explanation; however, it's very important that you don't install this fan with an unsealed or poorly insulated attic as it will make ice dams worse. I did about 11 years of research before taking on this project as I was originally quoted $14,000 for the job between various contractors (I don't know what it would cost now). This fan moves a lot of air compared to passive vents GAF WIFI Exhaust Fan was installed on the south facing side of the roof just under the peak of the roof. It works well at venting even with 6 passive vents at the peak of the roof (my attic is roughly 2000 sq ft, but actual living space is 1,250 and the rest is a covered deck). I used smoke to test it at the entire perimeter of the house as the house has continuous sofit ventilation around the entire house as the roof is hipped. You will need to call customer service to get the fan initially set up and Reese the CSR was helpful after multiple phone calls and troubleshooting (make sure that your wifi is not 5G as the app doesn't like this). Coincidentally, the app went down on the day we got 6" of snow last week and I called customer service as I manually turn my fan on when there is snow on the roof and it was about 2 hours until it was back online. I am happy with the fan so far, my only complaint is my recent conversation with Reese, after receiving two online surveys I called to give my feedback regarding the option to add subfreezing temperatures on the wifi thermostat as currently the thermostat only will start at 90 degrees or hotter temps. As I tried to explain to Reese that it would be extremely valuable to add a 32 degree setting on the thermostat that would start the fan since once that temperature is reached in your attic and there is snow on the roof an Ice dam can form. He didn't seem to want to listen and what I originally experienced as a helpful individual changed to a rude tone. Reese said the company isn't going to taylor a product to my needs and to use the humidistat option to have the fan turn on for ice dams. The problem with using the humidistat is that the humidity in my attic is far lower than the outside humidity by almost double, so that would never turn on my fan unless my ice dams had soaked my attic. The 32 degree temperature setting on the fan would be a major feature that I am surprised no one has thought of. If you have ever struggle with Ice dams then you understand or may benefit from what I just wrote. Let me know if you need help:) Update 2-13-2023, WIFI has been unreliable and has now quit working and fan is stuck on. I am a working snowbird and will have to leave the fan on until April when I return. The company gives you directions to fix with no solution in site. The software to this fan is a 1.2 average on Google play for good reason. Unfortunately I installed this on a presidential roof and installing a quiet cool would be very expensive. This is the problem when companies get too large, they are to big to fail and don't care about the little guy.

[@richanderson2048]

Thank you for sharing😊 I’ve seen people using heat tape along their gutters, but this is a permanent solution!

[@rodneybsmith]

Vent was vibrating for years and finally did something about it today. Definitely need to make sure it is nailed in properly otherwise it will vibrate and make a loud noise. You can even unscrew the top hood with a socket wrench to make it easier to nail it in is what I found. 1 1/4" roof nails did the job for me. I even dabbed a little bit of roof caulking on top of the nails so I never have to revisit the job again.

[@richanderson2048]

Thank you for sharing 😊

[@gafroofing]

We're glad you liked it!

[@thomasgardiner3291]

Can you install this onto an existing roof that has static vents (turtle vents)? Would you just replace the center one with one of these?

[@gafroofing]

Hi, Thomas. GAF does not recommend mixing different types of exhaust ventilation as outlined in this technical bulletin. bit.ly/3w6aanZ. If you have any further questions, please feel free to reach out to our technical experts at 1-800-766-3411

[@pharmbagg]

how about for a nonexistent roof system?

[@Joyjoy-ih1ie]

What if your home has main black and white wire? The fan has 3 black wires...1 black wire is attached to black home wire. The additional 2 black wires on fan, should I attach to white house wire?

[@gafroofing]

Our Technical Team is here to help! Please give them a call at 800-766-3411 for assistance.

[@Wesley.Grapes]

Can it be wired directly to a switch instead of thermostat

[@gafroofing]

Our Master Flow team is here to help, Oliver! Please give them a call at 800-755-9392.

[@liquidthens]

Is that fan rated for 15 amp white rome?x

[@gafroofing]

You can view product details on this webpage: spr.ly/6050X1C0m. If you have any other questions, please call our Master Flow team at 800-755-9392.

[@normaperez2168]

Is the roofer responsible to installed electrical job for master flow

[@gafroofing]

Hi Norma. Electrical work must always be done by a qualified person. We recommend contacting a qualified electrician who is familiar with electrical codes and installation.

[@mariaRodriguez-tt2nf]

How many sq ft does the fan cover?

[@gafroofing]

Hi, Maria. The specs are 2,800 sq. ft./vent. Click here to view all the specs: bit.ly/3O4ff83

[@kakeru123]

5:10 not very smart for skipping the locking nut