GFK21B Fireplace Blower Fan Kit for Heatilator NDV3630, NDV3630I

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  • GFK21B Fireplace Blower for Heatilator NDV3630, NDV3630I Fireplace Insert
  • GFK21B Fireplace Blower Fan for Heatilator NDV3630, NDV3630I
  • GFK21B Fireplace Blower Motor for Heatilator NDV3630, NDV3630I
  • GFK21B Fireplace Blower Kit for Heatilator NDV3630, NDV3630I Fireplace
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Our GFK21B Fireplace Blower Fan Kit is designed for the Heatilator NDV3630, NDV3630I gas fireplace insert to circulate air around the firebox and enhance heat output. This complete fireplace blower kit offers a low cost solution to push heat created by the fireplace into your living space.

A speed control module with timer circuit is included with the blower kit which automatically turns the fan ON / OFF at preset times and is equipped with a Speed Button to provide a quiet airflow at the desired speeds. The timer circuit will delay fan operation; by automatically turning ON the fan 7 minutes after the main flame has been turned ON (After the fireplace has warmed up) and turning the fan OFF 12 minutes after the main flame has been turned OFF (After the fireplace has cooled down).

GFK21B Fireplace Blower Kit Installation Manual Instructions GFK21B Blower Kit Installation Instructions

Fireplace Blower Kit Includes

  • Blower
  • Speed Control Module with Timer Circuit by Skytech
  • Jumper and Ground Wires
  • Hardware and Adhesive Velcro Strips/Dampening Pad - (Easy to install plus reduces Vibration)
  • Installation Instructions
  • 1 Year Comprehensive Warranty on Blower
  • 2 Year Warranty on Control Module

Product Specifications

  • Dimensions in Inches: W: 8.01 x H: 3.6 x D: 4.27
  • Motor is equipped with Thermal Safety Switch
  • Bearing Construction Type: Ball Bearings
  • CFM: 120+
  • AMPS: 0.74
  • HZ: 60
  • Volts: 115
  • RPM: 3000 (1/2400 with load)
  • Rotation: CCW
  • Blower Wheel Dimensions: Width: 4.7in (120mm) Diameter: 2.56in (65mm)
  • Anti-Vibration Impellers & Vortex Regulation Tabs to provide a steady airflow

Product Benefits

  • This fireplace blower fan produces high airflow and is manufactured with quality parts and components
  • Increase Heating Potential of your gas fireplace insert with this hgih airflow blower fan
  • Simple wiring connections makes installation Quick and Easy

If you have had any custom work done to your gas fireplace insert, compare the dimensions listed with the clearance in your appliance to insure proper fit.

GFK21B Fireplace Blower Diagram GFK21B Fireplace Blower Diagram with Dimensions

This fireplace blower fan kit was Assembled & Tested in the Midwest which includes parts Manufactured in the USA. Industry Research & Design contributed to the manufacturing of this high quality aftermarket fireplace blower kit and is designed to meet the original equipment specifications. The instruction manual provided may not include specific information about your exact fireplace model, though we try to provide technical support in assisting you.

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Warranty Information

1 Year Comprehensive Warranty
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Additional Information

NDV3630, NDV3630I
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19 Reviews

  • 4
    Nice addition

    Posted by Paul on 11th Dec 2023

    I bought just the fan and no remote. . The instructions are excellent and although a tight fit, the fan fits perfectly. Like most fireplace fans you need to choose between noise and heat. The higher settings are noisy and the lower settings don't move much air. My particular fireplace doesn't put out much heat in the first place so the fan certainly helps but will not heat the family room on its own. Again, that's a fireplace issue and not the fan. Overall, a very nice quality setup if not a bit loud.

  • 5
    Blower kit

    Posted by Walter M Drew on 30th Nov 2022

    Great product at a great price. Service was excellent and it was a breeze to install (pun intended).

  • 5

    Posted by Lori Stockdale on 8th Nov 2021

    Our order came in record speed but we had to wait for the install from a professional since the gas had to shut off and the valve moved in order to get in the back of the unit. We find it runs as advertised, is quiet on all speeds and we are looking forward to using it in the winter months ahead.

  • 5
    Blower motor is as advertised and easy to install. Only had it a few weeks but the auto on/off transformer is working as designed.

    Posted by Ken Sheets on 2nd Nov 2021

    Blower is pretty quiet especially on lower speed. I would recommend this product.

  • 5
    fireplace blower

    Posted by mike hashman on 8th Apr 2021

    this blower was ordered and fits very well and does exactly what i had hoped for.

  • 5
    Blower installtion

    Posted by Scott Burdecki on 6th Dec 2019

    Great product, easy installation. exactly what I wanted!

  • 4

    Posted by Nathan Neidigk on 17th Sep 2019

    Fireplace blower installed pretty well after reading through "mostly" clear directions. I'd have appreciated color instructions as most of the small components in the instruction pictures were not as clear as I'd have liked. Overall, happy with product so far. I installed early HOT September and haven't had the fan on for an extended period yet. During test runs, fan powers on after 7 min and powers off after 12. It's a smaller fan than the videos shown on YouTube...but this fan is designed for a corner fireplace and needs to be smaller because of space restrictions. For its size, I believe it puts out a good amount of warm/hot air. I'm looking forward to a long cold winter night so I can give the fan a run for its money.

  • 5
    Awesome Upgrade

    Posted by Keith Black on 20th Feb 2019

    I don’t know why I didn’t buy this earlier. Simple install and made all the difference. We couldn’t feel the heat unless we were within 2-3 feet of the fireplace before, now it warms the whole room!

  • 4
    Good Install Instructions

    Posted by Cory Mohling on 13th Feb 2019

    It was hard to get the fan to the back of the unit to install. I ended up removing the sticky velcro so I could slide it back. Then just stuck them back on and pushed to the back. In my install it seemed like there wasn't much space for the fan opening as half of the opening seemed to just line up with the back of my fireplace, but that may just be my fire place. Don't really feel a breeze coming out from the top of my fireplace, but the bricks above don't seem to as warm as they used to, so I think it is helping. Great instructions.

  • 5
    GFK21B Blower Kit

    Posted by Roland on 26th Jan 2019

    Very pleased with the item. Install was easy.

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