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Hybrid Control Module with Thermostat for PRHYBRID Series Vents

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  • Dual-power control for MF Green Machine Dual-Powered Roof Vents
  • Switches automatically between house and solar power
  • Works with Master Flow PRHYBRID and ERVHYBRID series vents
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Product Overview

The GAF Master Flow Hybrid Control Module with adjustable thermostat converts GAF Master Flow PGSOLAR or PRSOLAR "Green Machine" series solar powered fan into a Dual-powered (Solar/Electric) Hybrid model. Setting the adjustable thermostat enables the fan to run at night (without the sun), helping reduce the likelihood of damaging heat from accumulating in your attic. It is pre-wired with simple molded plugs for easy installation.
  • Converts GAF Master Flow ERVSOLAR, PRSOLAR2 or PGSOLAR solar model to dual-powered hybrid model
  • Temperature-activated thermostat allows for 24 hour operation when connected to house power source
  • Unit allows fan to run on solar then switch to AC power when sun goes down
  • Requires 120V AC connection in the attic
  • Pre-wired with simple molded plugs for easy installation
  • Replacement control unit for the ERVYBRID and PRHYBRID2

Additional Resources

From the Manufacturer



Product Depth (in.)2.25Product Height (in.)4.25
Product Width (in.)9.188


Color/FinishSilverFeaturesThermostat Controlled
MaterialGalvanized SteelPack Size1
Product Weight (lb.)2.15Returnable90-Day

Warranty / Certifications

Manufacturer Warranty1-year Limited Warranty

Questions & Answers

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Customer Reviews

  • 4.8
    out of 5 reviews
  • 100%recommend this product
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Showing 1-5 of 5 reviews
Works well so far
Does what it says. Odd thing is that it arrived by itself wrapped in bubble wrap in a plain box with nothing else. No box or instructions. I thought it was used, but under close inspection, it was not and I guess that is the way the come.
Response from Master FlowApr 21, 2022
Thank you for the feedback. Glad you were satisfied with your Master Flow purchase. MasterFlow
    • Recommended
    Just perfect for my situation.
    Just perfect for my situation.
    • Verified Purchase
    • Recommended
    It worked, easily converting solar only fan to dual power!...
    It worked, easily converting solar only fan to dual power!
    • Verified Purchase
    Great item for my solar fan but a bit pricey, otherwise great.
    Great item for my solar fan but a bit pricey, otherwise great.
    • Verified Purchase
    • Recommended
    Great purchase
    The solar attic fans were great, but didn't do enough since the turn off as soon as the sun goes down. These hybrid controls make them markedly more effective blowing the heat out to allow the cool night air in. Easy to install but certainly could use a longer cord for hooking up to the fan (I had to install it right at the fan instead of at the top of the attic)
      • Recommended
      Showing 1-5 of 5 reviews