Harman Accentra Insert, Invincible Insert, Distribution Blower, 3-21-47120

SKU 3-21-47120
MPN 3-21-47120


Harman Accentra Insert, *Invincible Insert, & Super Magnum Stoker, Distribution Blower, 3-21-47120

This blower is responsible for blowing hot air out into the room. It is also referred to as the room air blower or convection blower. This part serves two functions. One, to distribute heat that the stove is generating out into the room. And, second to prevent the pellet stove from overheating by pushing the hot air away (into the room) from the body of the stove.

*If the serial number on your Harman Invincible Insert falls between serial number 1556 - 2128, this blower is not compatible with your stove. During that time Harman was using part number 3-21-08619. This part is now obsolete.

Replacement For Part Number :
  • 3-21-47120

Compatible Models


  • Accentra Insert
  • Invincible Insert
  • Magnum Stoker



Unfortunately, sometimes products do not work like they are supposed to. We offer a 90 day warranty on manufacturer defects. Some manufacturers make this a very simple and easy process unfortunately others do not. Items must be used in accordance with the manufacturers guidelines to qualify for warranty replacement. Please be advised that warranty claims for these parts may take up to 4 weeks for processing, and customers must cover shipping.

Shipping Info

This Item Qualifies For Free Shipping!

When Will My Order Ship

All orders are typically processed within 24 hours of receiving payment and are shipped from us same day if placed before our shipping cutoff time (Monday - Friday: 1PM, Saturday: 10AM, Sunday: No Shipping), orders placed after our cutoff time are shipped the next morning.

How Does Free Shipping Work?

Most orders over $99 qualify for free shipping! Orders which ship for free are shipped with either USPS or UPS based on our discretion. If you are using a PO box, free shipping orders will always go USPS.

Is Expedited Shipping Available?

We offer both overnight and two day air shipping services for all orders placed within the Continental United States. For information on shipping cut-off times, go to our shipping page.

Do You Ship To Canada?

We ship to Canada! We estimate USPS to take 4-10 days once receiving your package from us. We do not offer expedited shipping of any kind to Canada. Please allow an extra 2-5 days for all shipments to Canada. Free shipping is not available to Canada.

Do You Ship To Alaska Or Hawii?

We ship to both Alaska and Hawaii! We do not offer next day or two day shipping to Alaska or Hawaii. Free shipping is not available to Alaska or Hawaii.

Do You Ship Outside The US Or Canada?

Unfortunately, at this time we do not offer international shipping other than to Canada.

If you wish to calculate shipping for an item which does not qualify for free shipping, or if you would like the cost to expedite your order, please do the following. Add the item you want to order to your cart and click here to be taken to the cart page where you can enter your country, state / province, and zip code for an estimate.

Shipping Time Estimations

For information on shipping time estimations, see either the Shipping Information & Transit Times on the cart page, or go to our shipping page.

Read More About Our Shipping Information

Customer Reviews

Based on 2 reviews
great Job!

As usual a wonderful experience!

Blower replacement #3-21-47120

Fit perfectly and works great!


Ask a Question
  • The aftermarket distribution motor looks like it has more wires to hook up than the oem. How does that hook up

    Aftermarket is capacitor start and drive, OEM is a simple induction motor. Both the AMP and the OEM motors wire up the same, white to white and black to black

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