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1250 CFM Black Power Roof Mount Attic Fan

$13900
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  • Helps cool attics up to 2,200 sq. ft. in size
  • Compact size with hemmed dome for a sleek look
  • High efficiency motor with adjustable thermostat
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Product Overview

The GAF Master Flow ERV5 Power Roof Vent is a great overall investment in attic ventilation. It can quickly remove a larger volume of hot and/or humid air from your attic when compared to static ventilation. This in turn can help save money on your heating and cooling costs. The ERV5 model Power Roof Mount Vent can move air at a rate of up to 1250 cu. ft. per minute. It is designed for attic spaces up to 2200 sq. ft.
  • Energy efficient uses up to 55% less electricity than typical competitor's vents (based on GAF testing at 120-Volt)
  • Helps reduce energy costs and helps prolong the life of the roof and shingles
  • Galvanized steel construction for durability
  • Excellent for roof slopes 3:12 to 12:12
  • Heavy-duty internal screen helps prevent animal infestation
  • UL Listed
  • Miami-Dade County Product Control approved, State of Florida approved, and meets or exceeds the requirements of Texas Department of Insurance
  • Optional humidistat available (H1) - sold separately

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Top Rated1250 CFM Black Power Roof Mount Attic Fan
1500 CFM Black Power Roof Mount Attic Fan1500 CFM Weathered Wood Power Roof Mount Attic Fan1500 CFM Shingle Match Weathered Wood Power Roof Mount Attic Fan with Humidistat/Thermostat
BrandMaster FlowMaster FlowMaster FlowMaster Flow
Name1250 CFM Black Power Roof Mount Attic Fan1500 CFM Black Power Roof Mount Attic Fan1500 CFM Weathered Wood Power Roof Mount Attic Fan1500 CFM Shingle Match Weathered Wood Power Roof Mount Attic Fan with Humidistat/Thermostat
Price
$13900
$16301
$19760
$23314
Ratings
(169)
(274)
(274)
(97)
Power TypeElectric PoweredElectric PoweredElectric PoweredElectric Powered
FeaturesThermostat ControlledBuilt-in Humidistat,Built-in Screen,PaintableAdjustable Thermostat,Built-in Screen,PaintableAdjustable Thermostat,Paintable,Wildlife Guard
Ventilation TypeRoofRoofRoofExhaust
Rough Opening Width (In.)15 in15 in15 in15 in
Intake/ExhaustExhaustExhaustExhaustExhaust
Wattage (watts)160127127127
Mounting PositionRoof MountRoof MountRoof MountRoof Mount
Rough Opening Height (In.)15 in15 in15 in15 in
MaterialGalvanized SteelGalvanized SteelGalvanized SteelGalvanized Steel
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Customer Reviews

  • 4.4
    out of 169 reviews
  • 85%recommend this product
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Showing 1-10 of 169 reviews
Low quality and poor design
Very poor design and low quality when is rainy water bounces back from roof to the blade and drip to the attic space. Contacted manufacturer and they don’t want to do cover the damages to my ceiling.Worst customer service I ever experienced.
by
    1 found this review helpful
    I purchased this to replace an older one that I installed in 2007. The old fan unit got filled wi...
    I purchased this to replace an older one that I installed in 2007. The old fan unit got filled with dust and dirt when the roof was replaced, otherwise I think it would still be functioning perfectly. This unit has 5 verses 4 blades and is more powerful. I ALWAYS test the unit on the ground first before dismantling the old or making any roof preparations! Just hook up a 16 gauge short extension cord making sure to place the common in the common side (larger opening) and the hot on the power side. It worked fine on the ground so I removed the old and installed the new in about 3 hours. I also add straps to insure the unit will be stable during strong winds. I set the temperature at 110 degrees F and it has been working great. In my opinion these are very good units.
    by
    • Verified Purchase
    • Recommended
    8 found this review helpful
    Works great. Very silent.
    Works great. Very silent.
    by
    • Verified Purchase
    • Recommended
    2 found this review helpful
    Barrett Roofing installed my previous one I 2011 and they installed this one too! Quick easy roo...
    Barrett Roofing installed my previous one I 2011 and they installed this one too! Quick easy roof install because I didn't have to do it, but I did make the final electrical connections and they were very easy to compete. This version only had a thermostat; however, the previous in contained both thermostat and humidistat. Overall, a quiet unit and easy install! Thank you, Gary
    by
    • Verified Purchase
    • Recommended
    Easy installation, pretty quiet and great suction. Recommended!
    Easy installation, pretty quiet and great suction. Recommended!
    by
    • Verified Purchase
    • Recommended
    2 found this review helpful
    Works really good
    Works really good
    by
    • Verified Purchase
    • Recommended
    I purchased two of these back in 2007. The only thing I ever had to do was oil them every few yea...
    I purchased two of these back in 2007. The only thing I ever had to do was oil them every few years in the Spring time and make sure they were functioning properly. We had a new roof put on in December and in January we found out that the roofers had damaged one of these as the top came off! I purchased this one to replace it. I love that they come in different colors now. We needed brown. As soon as it arrived I hooked up a temporary plug (used an old plug line with wire nuts from a lamp and made sure common and hot wires were correctly aligned). Then I placed the unit in the sun and waited for the temperature to get above 70 degrees. It went on perfectly. Then I set the thermostat to 105 degrees and used a heat gun. I also had a thermometer near and when the temperature got to 105 it went on perfectly again. Now it was ready to be installed. I do a lot of handyman work and I ALWAYS test these things BEFORE I install them to make sure they work. I set the thermostat to 105 and installed it in the attic. I used a switch in the attic so I could easily turn off the power to it while wiring the new unit. I tested one more time with a heat gun and it worked fine. I really like the MasterFlow brand. By the way the second unit I have is doing great at 13 years old!
    by
    • Verified Purchase
    • Recommended
    3 found this review helpful
    Great fan easy to install. Works good.
    Great fan easy to install. Works good.
    by
    • Verified Purchase
    • Recommended
    The price was right. I bought the largest of the models offered. Roofers did install, and I put ...
    The price was right. I bought the largest of the models offered. Roofers did install, and I put in the electric. Looks nice also. Thank you Master Flow. Money well spent for cooling and prolonged life of shingles.
    by
    • DIY
    • Verified Purchase
    • Recommended
    2 found this review helpful
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    • Verified Purchase
    Showing 1-10 of 169 reviews