How to Install a Duct Booster Fan

Fine tune your heating and cooling system

Introduction

Bring more heat to a cold room or more cool air to a hot room past installing a duct booster fan. Installation is elementary, even if you have to change the kick size.

Tools Required

Materials Required

  • Duct booster fan
  • Fan speed control

Project step-past-footstep (iv)

Stride 1

Installing the booster fan

Install the fan

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

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Step 2

Connect to power

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

If you have a room that'southward as well cold in the winter and too hot in the summer, a booster fan can brand the room more comfortable. There are three types of boosters. The simplest is a fan unit of measurement that sits on top of the annals. Another selection is an in-line fan that you can install in the duct line. The 3rd type, shown here, is a recessed fan that fits into the duct and is affluent with the floor. Recessed duct fans are sized to fit either a 4 ten 10-in. or 4 x 12-in. floor duct. If you have either of these sizes, order the fan and install information technology in place of the annals. And so plug information technology in and you lot're washed (Photos 1 and 2). However, if your floor duct is smaller (like 2 x ten in. or two x 12 in.) y'all'll take to cutting out a section of the floor and install a larger boot. If the ceiling beneath the duct is open, you could practice most of the piece of work from beneath. If you lot accept a hardwood, tile or other finished flooring surface with a finished ceiling beneath, information technology may be easier to open the ceiling beneath the duct and patch it when you're washed.

It's also a skillful idea to check your ducts for leaks and missing insulation, which could be contributing to the trouble. Run into Plug Leaky Ducts and Insulating Crawl Space Ducts for more than information.

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Step 3

Replace Undersize Boots

Cutting an access panel. Buy a larger 4 x 10-in. or iv x 12-in. right-bending boot and a matching recessed booster fan (one choice is the Tjernlund RB12 , available through our affiliation with Amazon.com). Pull up the carpet and padding around the duct to find and mark the joists on each side of the duct. Ready the cutting depth to cut through the subflooring and any underlayment. And so cut and remove the flooring and the erstwhile duct boot. You may take to cutting the sometime boot apart with a tin snips to go access to the sometime sheet metallic screws.

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Step 4

Install the larger duct boot

Next, bandy in the larger boot. Overstate the duct opening in the cut flooring pieces to fit the new kicking. Reinstall the floor with screws and staple the padding dorsum in identify. Lay the carpeting over the duct and cutting the opening to match. So tuck the carpeting back onto the tack strip. Insert the fan into the duct. Then install the register and cord and connect to a receptacle or an optional fan speed controller.

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Originally Published: January 07, 2019