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Expert Problem Solvers

Volko Supply

is your  Auto-Draft®

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Draft Inducer Source 
Servicing Home Owners & Contractors since 1948

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AUTO-DRAFT® Inducers assure positive draft when restricted boilers and furnaces, poor chimneys or slight negative pressures in buildings prevent proper exhaust of combustion gas. The venturi action of Tjernlund Auto-Draft Inducers starts air moving smoothly. These units are quick and easy to install and completely automatic in operation. Tjernlund’s unique design and durable construction makes them trouble-free and reduces maintenance to a minimum. The Vari-Draft Control permits adjustments to the individual job requirement.

Select a position between draft hood, diverter or barometric damper and chimney, locating the Inducer as close to the chimney as possible. Inducer should be mounted 2-3 pipe diameters away from a directional change, i.e. elbows and tees, so turbulence is not created.

Mount the Draft Inducer on vertical, horizontal or inclined vent pipe. If used on a horizontal vent pipe, mount Inducer on bottom of pipe, not on top, to avoid creating a heat trap in the Inducer.

Click for Factory Installation PDF.






The motor shaft must be level and horizontal to avoid excessive wear on bearing.

If change in vent pipe size is required, use a tapered increaser or reducer.

In-Line Inducers should be installed on a section of single wall vent pipe in order to assure proper performance.

Do not use In-Line Draft Inducers on condensing heating equipment.

We recommend the use of a carbon monoxide detector in all mechanical rooms.





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The Exhausto RS residential type chimney top mounted fan to be used in conjunction with wood, gas, oil and coal fired appliances. The fan can be used with fireplaces, fireplace inserts, stoves, ovens, BBQ's, water heaters, furnaces, small boilers and more.

Volko fireplace & chimney caps...large selection of chimney cap cover solutions...Weathershield Chimney Caps Chimalator top sealing chimney dampers. Click to visit Volko.com and see a wonderful collection of Wood Floor Vents Click to visit Volko.com and see a wonderful collection of quality home items

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