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Auto Draft Chimney Top Ventilator

These chimney fans mount easily to either tile lined or metal flues with adjustable brackets that expand to fit the inside of the flue. The fan assembly can swing out of the way for chimney inspection and cleaning.

As low as $2,294.99
100% of 100

These chimney fans mount easily to either tile lined or metal flues with adjustable brackets that expand to fit the inside of the flue. The fan assembly can swing out of the way for chimney inspection and cleaning.

  • Solve draft problems for solid fuel fireplaces and stoves or gas fueled appliances
  • Overcome chimney design problems like small, short or offset flues
  • Eliminate problems caused by down-drafts, cold startups and tight construction
  • Clamshell design for easier installation and maximum accessibility to chimney


  • Speed control
  • PSC ball bearing motors with -40° F, low temp lubricant
  • Patented motor cooling fan automatically activates, extending motor life
  • Clam-shell design for easy installation, inspection and service
  • Hi-Performance backward inclined impeller repels soot
  • Hi-temp powder coat finish

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Click Here for Installation Instructions

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Size selection for solid fuels (wood): Multiply the vertical and horizontal hearth opening to determine the face area opening in square feet. If the fireplace is open on the sides or back, total all openings to arrive at the total face area. If typically the fire can be maintained but smoke drifts into the room, select the model which has a face area capacity equal to or greater than the face opening. The RT-750H model can be used for up to 14 sq. ft. opening for woodburning. The RT-1500H model can be used for up to 28 sq. ft. opening for woodburning. If in doubt, contact us for assistance.

Size selection for gas/oil units:

ModelVent Pipe DiameterBTU/HR. Input, Gas w/ Draft Hood/DiverterBTU/HR. Input, Gas/Oil w/ Barometric ControlMax. Equivalent Vent Length (FT) @ 400 ℉ 
RT750 8"

400,000 to 700,000

700,000 to 900,000

500,000 to 900,000

900,000 to 1,200,000



RT750 10"

700,000 to 1,000,000

1,000,000 to 1,200,000

900,000 to 1,200,000

1,200,000 to 1,500,000



RT1500 12"

1,000,000 to 2,000,000

2,000,000 to 2,400,000

1,200,000 to 2,700,000

2,700,000 to 3,200,000



RT1500 14"

2,000,000 to 2,500,000

2,500,000 to 2,700,000

2,700,000 to 3,500,000

3,500,000 to 3,700,000




SpecificationsRT-750H and RT-750RT-1500H and RT-1500
Maximum Face Area of Fireplace* 14 square feet 28 square feet
Motor HP 1/12 1/2
Motor Amps 1.2 5.8
Motor Volts 120 120
Weight 34 lbs. 47 lbs.
Base 14.5" x 14.5" 17" x 17"
Height 17.5" 22.5"
Inlet 8" 12"
Tile Lined Chimney InstallationTile Lined Chimney Auto Draft Fan Clamps to rectangular tile liners 6" x 6" through 10" x 14" and round tile liners from 6" - 11". Clamps to rectangular tile liners 8" x 8" through 12" x 14" and round tile liners from 10" - 14".
Metal Vent InstallationMetal Vent Auto Fan As small as 8" ID and as large as 12" OD As small as 12" ID and as large as 20" OD

Warranty Information:

The manufacturer warrants to the original purchaser that this product will be corrosion* resistant and free from mechanical defects due to faulty material or workmanship for a period of (2) years from the date of original purchase or delivery to the original purchaser, whichever is earlier. Remedies under this warranty are limited to repairing or replacing, at the manufactures option, any product which shall, within the above stated warranty period, be returned to the manufacturer, postage prepaid.

There are no warranties which extend beyond the description on the face hereof, and the manufacturer expressly disclaims liability for incidental or consequential damages arising from the use of this product. This warranty in lieu of all other express warranties and no agent is authorized to assume for the manufacturer any liability additional to those set forth in this limited warranty. Implied warranties are limited to the stated duration of this limited warranty.

Some states do not allow limitation on how long an implied warranty lasts, so that limitation may not apply to you. In addition, some states do not allow the exclusion or limitation of incidental or consequential damages, so that above limitation or exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights which may vary from State to State.

*Inducer housing and components must be compromised, adversely affecting normal operation due to corrosion. 6 Month Customer Satisfaction Guarantee: If a customer is not satisfied with their auto drafter this guarantee allows the customer a full refund. The manufacturer will not cover shipping or dismantling charges.
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