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DIY Vent Extender For Furniture

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.

I’m going to show you how to make a DIY Vent Extender For Furniture for only $2.00. It’s a safe and practical alternative to spending $20.00 for this one.

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.” Vents are there to provide for a necessary free flow of air. Block that flow, and your home will run sub-optimally, and you could even cause damage to your HVAC system.” 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, but before you go , measure the size of your floor vent. Also, measure the distance from the vent to the edge of your furniture that will be covering it.

Once you are at the Dollar Tree, you will notice that they have multiply sizes of Aluminum Baking Pans all for $1.00. In addition, they have Silver Duct Tape for $1.00. 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.

Measure and Cut the pan

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

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

Attached Extender to the Vent

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

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

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

Insert the vent cover back over 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 properly aligned. If you failed 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.

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

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Paul Peas

Wednesday 29th of June 2022

Brilliant! I used your idea, except I swapped the silver duct tape for silver HVAC tape. That might provide a slightly better seal. Works perfectly!


Thursday 30th of June 2022

Paul, I'm so glad you found this helpful.

Robert Fuller

Tuesday 23rd of November 2021

Well done! I bought two $1 packs of two of cake pans at the Dollar Tree. I used all four and duct tape to extend 33" from my wall under my couch. It worked great and the heat is making it to the center of the room too. Cake pans were 2" so the support lips just spread to accommodate the 1.5" clearance. I prefer the aluminium over cheap meltable plastic sold for $10-20.


Tuesday 23rd of November 2021

Robert, I'm so glad this was helpful to you. Thanks for sharing.


Thursday 11th of March 2021

Awesome idea! Thanks

Thursday 11th of March 2021

Oh I'm so glad you like this.


Thursday 11th of March 2021

I wish I could either come spend a week with you or hop inside your head for a day. You have the most creative ideas. I need some of your imagination and resourcefulness! Pinned

Thursday 11th of March 2021

Cindy, You are always so encouraging. Thanks so much.

Miche Ortega

Thursday 11th of March 2021

So smart!

Thursday 11th of March 2021

Miche, Thank you so mcuh.