How to Install a Duct Booster Fan

Fine tune your heating and cooling system

Introduction

Bring more heat to a cold room or more than cool air to a hot room by installing a duct booster fan. Installation is simple, even if you have to alter the boot size.

Tools Required

Materials Required

  • Duct booster fan
  • Fan speed control

Project step-by-footstep (iv)

Step 1

Installing the booster fan

Install the fan

If the duct is a standard size, remove the annals and drib the fan into the kick. Secure it to the floor on each side with screws. If the duct is smaller than standard, see photos below.

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Stride 2

Connect to power

Plug the power cord into the fan and route to the nearest receptacle. Add an optional fan speed controller to accommodate the fan speed to your liking.

If you lot take a room that'due south too common cold in the winter and likewise hot in the summer, a booster fan can make the room more comfortable. At that place are three types of boosters. The simplest is a fan unit that sits on tiptop of the register. Another option is an in-line fan that you can install in the duct line. The third blazon, shown here, is a recessed fan that fits into the duct and is flush with the floor. Recessed duct fans are sized to fit either a 4 x x-in. or 4 10 12-in. floor duct. If you have either of these sizes, order the fan and install it in place of the annals. Then plug it in and you're done (Photos 1 and 2). However, if your floor duct is smaller (like 2 10 x in. or 2 10 12 in.) you'll have to cut out a section of the floor and install a larger boot. If the ceiling below the duct is open up, you could do most of the piece of work from below. If you have a hardwood, tile or other finished floor surface with a finished ceiling below, it may be easier to open the ceiling below the duct and patch it when you're washed.

Information technology's also a good idea to bank check your ducts for leaks and missing insulation, which could be contributing to the problem. Meet Plug Leaky Ducts and Insulating Clamber Infinite Ducts for more than data.

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Step 3

Replace Undersize Boots

Cut an access panel. Purchase a larger 4 10 10-in. or 4 10 12-in. right-angle boot and a matching recessed booster fan (i pick is the Tjernlund RB12 , available through our affiliation with Amazon.com). Pull up the carpet and padding effectually the duct to find and mark the joists on each side of the duct. Set the cutting depth to cut through the subflooring and any underlayment. Then cut and remove the floor and the old duct kicking. You may have to cut the old kicking apart with a tin snips to get access to the old sail metal screws.

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Step 4

Install the larger duct kicking

Adjacent, swap in the larger kicking. Enlarge the duct opening in the cutting flooring pieces to fit the new boot. Reinstall the floor with screws and staple the padding dorsum in place. Lay the carpet over the duct and cutting the opening to match. So constrict the carpeting back onto the tack strip. Insert the fan into the duct. So install the annals and cord and connect to a receptacle or an optional fan speed controller.

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Originally Published: January 07, 2019