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1000 CFM Mill Power Roof Mount Attic Fan

$11500
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  • Helps cool attics up to 1,600 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 ERV4 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 ERV4 model Power Roof Mount Vent can move air at a rate of up to 1000 cu. ft. per minute. It is designed for attic spaces up to 1600 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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From the Manufacturer

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1000 CFM Mill Power Roof Mount Attic Fan
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BrandMaster FlowAir VentMaster FlowMaster Flow
Name1000 CFM Mill Power Roof Mount Attic Fan1170 CFM Black Power Roof Mount Attic Ventilator1500 CFM Black Power Roof Mount Attic Fan1500 CFM Weathered Wood Power Roof Mount Attic Fan
Price
$11500
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Ratings
(165)
(27)
(262)
(262)
Power TypeElectric PoweredElectric PoweredElectric PoweredElectric Powered
FeaturesBuilt-in Screen,Thermostat ControlledAdjustable ThermostatBuilt-in Humidistat,Built-in Screen,PaintableAdjustable Thermostat,Built-in Screen,Paintable
Ventilation TypeRoofRoofRoofRoof
Rough Opening Width (In.)15 in14.515 in15 in
Intake/ExhaustExhaustExhaustExhaustExhaust
Rough Opening Height (In.)15 in14.515 in15 in
Wattage (watts)160160127127
MaterialGalvanized SteelGalvanized SteelGalvanized SteelGalvanized Steel
Mounting PositionRoof MountRoof MountRoof MountRoof Mount
Coverage Area (Sq.Ft)1600150028002800
View ProductView ProductView ProductView Product

Specifications

Dimensions

Coverage Area (Sq.Ft)1600Cut-Out Diameter (in.)15
Net-Free Area (Sq. In.)480Product Depth (in.)25 in
Product Height (in.)9 inProduct Width (in.)25 in
Rough Opening Height (In.)15 inRough Opening Width (In.)15 in

Details

Airflow (CFM)1000Amperage (amps)1.35 A
Color FamilySilverColor/FinishSilver
Color/Finish FamilySilverFeaturesBuilt-in Screen,Thermostat Controlled
Horsepower (hp)1/12Intake/ExhaustExhaust
MaterialGalvanized SteelMounting PositionRoof Mount
Power TypeElectric PoweredProduct Weight (lb.)17 lb
Recommended Sq. Ft.1600Returnable90-Day
Ventilation TypeRoofVoltage (volts)120 V
Wattage (watts)160

Warranty / Certifications

Manufacturer Warranty5-year Limited Parts/2-year Labor Warranty

Questions & Answers

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Customer Reviews

  • 4.5
    out of 165 reviews
  • 93%recommend this product
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Showing 1-10 of 165 reviews
I bought this unit to replace the old one which lasted about 10 years built with the home. This n...
I bought this unit to replace the old one which lasted about 10 years built with the home. This new one lasted less that 2 years and started squealing a LOT. Neighbors noticed how loud it was so time to replace it again. Really with it would have lasted a bit longer.
by
    2 found this review helpful
    I bought this fan about 2 years ago and installed it back in winter in 2016. It was too hot i the...
    I bought this fan about 2 years ago and installed it back in winter in 2016. It was too hot i the attic to do it in summer. When me and my wife moved into our new house, I put the remote thermostat in the attic. The house was newly built, and had attic insulation "blown" in. It was really good at holding in heat during winter and keeping the attic somewhat cool. The house we were renting was old, had worn down and flattened "Pink Panther" insulation. It was horrible. Our electric bills were about $200 a month during summer when we lived there. I put in a gable mounted fan, and it dropped our bills down to about $125-150, so a significant drop in costs. Having seen for herself the benefits of a attic fan, she allowed me to cut a hole in our new home to install this one. Even though the house was new, and had great insulation, this fan still helped to keep the heat to a minimum. I spray painted the aluminum cover with a galvanizing spray, then with Rustoleum brown, to match the house color. During summer, we keep the AC set at 75 when were gone (we both work), and drop it to 72 when we get home. After 10pm, we drop it to 69, because we sleep better when its cold. We use Green Mountain Energy as our provider, and they give us a decent rate. Our Electric bills are as follows: March: $68.74 April: $79.07 May: $123.76 Projected Cost For June (AS of this writing. I still have 2 weeks to go) $143.50 I anticipate a higher bill for June, as my wife took a week off from work and stayed home during the week. I'm sure it would have been lower had she gone to work. I also did an experiment last week. I shut off the fan from the power source for 2 days, so i could record the temps in the attic. I've also included 2 pictures of the before and after. The BEFORE (shutting off the fan) picture shows the highest temp in 48 hours was 135 degrees. The AFTER (turning the fan back on) picture shows that the highest temp in the attic was 101 degrees. Also, when the AC runs, since it doesn't have to overcome such a high temp in the attic, the house cools down significantly faster, which means less cycling of the outside unit, which means less energy used. As far as i'm concerned, this is a MUST HAVE for anyone in the Houston and surrounding areas. The cost of savings far outweigh the cost of installing this fan.
    by
      • Recommended
      17 found this review helpful
      by
      • Verified Purchase
      like the fact that the vent cap and bottom plate...
      like the fact that the vent cap and bottom plate are galvanized steel instead of plastic
      by
      • Verified Purchase
      by
      • Verified Purchase
      Working well. Hard to install as a replacement fan with...
      Working well. Hard to install as a replacement fan with shingles already done
      by
      Response from Master FlowJul 12, 2022
      Thank you for the feedback. Glad you were satisfied with your Master Flow purchase. MasterFlow
      • Verified Purchase
      These power vents last about 7 years. They are easy...
      These power vents last about 7 years. They are easy to change out. For the cost 7 year lifespan is fine
      by
      • Verified Purchase
      Roof power vent
      After 2 years the motors freeze up
      by
      • Verified Purchase
      The 1000 CFM exhaust fan does a fine job cooling...
      The 1000 CFM exhaust fan does a fine job cooling my walk up attic. It moves a lot of air and is very quiet. Very satisfied.
      by
      • Verified Purchase
      Good Value
      Bought this to replace the motor, fan blades and thermostat on an existing vent. Didn't need the housing but that was okay for the price. Good value and great fit into existing vent housing.
      by
      • Verified Purchase
      • Recommended
      Showing 1-10 of 165 reviews