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DIY Vent Extender For Furniture

I will show you how to make an Inexpensive DIY Vent Extender For Furniture for only $2.50 using Dollar Tree Supplies. It’s a safe and practical alternative to spending $20.00 and up for one.

Why are all the Heat and Air vents in the exact place you want to arrange your furniture? There are Vent Extenders available for purchase, but we needed two, and $40.00 seemed like a lot for something hidden beneath the furniture. So here’s what we did.

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What Is The Purpose of A Vent Extender?

The purpose of a vent extender is to redirect the airflow from a heating and air conditioning vent that may be impeded due to furniture placement. If the vent is under a sofa, dresser, or bed, the vent extender will direct the airflow from underneath the furniture blocking proper airflow.

Is It OK to Put Furniture Over The Floor Vents?

This is the question I asked my husband, and here is the result of his research. The second sentence in this article convinced us that, YES, we needed a vent extender.

“The short answer to this question is, “No, it’s not ok to block the airflow.”

Vents are there to provide for a necessary free flow of air. Block that flow, and your home will run sub-optimally, and you may also cause damage to your HVAC system.” You can see more reasons to use an extender in this article from Hunker.

How To Make a DIY Vent Extender For Furniture

First, you will need to make a trip to The Dollar Tree. However, before you go, please measure the size of your floor vent and the distance from the vent to the edge of your furniture covering it.

Once you are at Dollar Tree, you will notice that they have multiple sizes of Aluminum Baking Pans for $1.25. In addition, they have Silver Duct Tape for $1.25. That’s all you need.

Just be sure the pan you purchase is long enough to extend to the edge of your furniture and wide enough to fit over the floor vent.

If you are working under a sofa or bed, you may need more than one pan to extend to the edge of your furniture. You can easily combine two pans with duct tape to make them long enough.

How To Measure and Cut for DIY Vent Extender?

First, using the measurement from the back of the vent to the edge of the furniture, mark the baking pan at that distance.

You should be able to cut the pan with simple scissors.

How To Attach The Extender For The Vent?

Next, using duct tape, attach the pan to the vent securing three sides, as shown in the photos.

The rim of the pan fits almost perfectly along the edge of the vent.

Here is another Blog Post that you may enjoy – Brilliant Ways to Hide that Ugly Vent & More.

Insert the Vent Cover with Extender Attached Over Vent Opening

Finally, making sure the vent is open, place the cover back into the opening.

Then, place your furniture back over the vent extender and make sure everything is aligned correctly. If you fail to cut enough off the aluminum pan, it’s easy to trim any excess.

You want the extender to be as close as possible to the edge of the furniture.

Here you can see how closely the extender fits against the furniture.

The air vent extender is completely hidden but allows the air to flow directly from the front of the side table.

You have to see the before and after of this amazing furniture side table transformation.

When we added this flea market chest to the other side of the bed, it presented the same problem. We were able to make two air vent extenders for only $3.75.

How we have storage on both sides of the bed, and the air vents are well-ventilated to protect the furniture and the HVAC system.

See Video Tutorial

Thanks for stopping by. I hope you found this helpful. I look forward to sharing my next adventure with you.

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Saturday 13th of January 2024

Fantastic! Genius. Just what I was looking for. Can’t thank you enough for sharing this idea!


Sunday 14th of January 2024

Misty, I'm so glad you found this helpful. Thanks for sharing.


Tuesday 12th of December 2023

Great idea, just make sure to check the floor underneath the furniture from time to time.I did something like this and apparently moisture built up and actually caused my wood floor to warp


Tuesday 12th of December 2023

Travis, Thanks for the tip.

Chris and Carrie

Tuesday 12th of December 2023

thanks for sharing. God bless!


Tuesday 12th of December 2023

Thank you for stopping by.


Sunday 24th of September 2023

Thanks for the great idea. I didn't even use the tape; for a wall vent with a piece of furniture in fron of it, I just gently pushed the furniture against the baking pan to keep it in place.


Sunday 24th of September 2023

Sam, I'm glad you found this helpful.


Monday 12th of December 2022

Very helpful! What a great hack, thanks for sharing!


Tuesday 13th of December 2022

Melanie I'm so glad you found this helpful.