Fireplace Insert vs Zero Clearance Fireplace

So, here is our question for you. Do you need an insert, or do you need a zero clearance fireplace? If you are unsure of the difference between the two, don’t worry! You are not alone. The phrase “zero clearance” is not one that comes up in normal conversation which leaves a lot of people thinking that all fireplaces units (that aren’t masonry or free-standing) are “inserts”. But that’s okay! We’ve got your back on this one. Here are the five main differences between zero clearance fireplaces and inserts that you will want to know before you purchase one from your local fireplace store.

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1. Type of Home/Construction

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Zero clearance fireplaces are usually found in new construction or home remodeling projects. Fireplace inserts are found in older homes. Pretty simple, right? Now, let us explain the “why” behind this--

2. Framing

A zero clearance fireplace has to be framed specifically into a wall. “Clearance” refers to the amount of space in-between the fireplace unit and the nearest combustible material. While the clearance in a zero clearance fireplace is not actually “zero inches,” the measurement is close to zero and is much less than that of a fireplace insert. In comparison, an insert is slid into a pre-existing masonry fireplace. This is an open fireplace made entirely of brick or rock (which are non-combustible materials). HOWEVER, don’t be fooled by framed fireplaces that are finished with brick or rock. These can be easily re-framed for a zero-clearance fireplace. This brings me to our next reason.

3. Firebox

The reason “zero clearance” fireplaces cannot be slid into an existing fireplace is because of the firebox size. If you look at the back of a zero clearance fireplace (even one that has the same size front as an insert) the box will look much bigger. This is because an insert will have a single, tapered firebox so that it can be slid into tighter spaces while the zero clearance fireplace (with the freedom of framing) needs a second firebox to protect the combustible materials from the heat of the first firebox. **Pause to take a breath, lol** This is how the zero clearance fireplace maintains its “zero clearance” title.

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4. Sizes

Because zero clearance fireplaces are custom fitted to your house and framed into the wall, you don’t have the same limitations on the size of the viewing area as you do on a fireplace insert. With an insert, you can only go as big as your masonry fireplace unless you are willing and able to cut brick out of your fireplace. While this may be something you can work around (depending on your home) it is also something to think about.

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5. Finish Work

Lastly, a zero clearance fireplace will always require some sort of finish work since it will be framed in. While we don’t install any finish work (tile, brick, rock, etc.) we can refer you to The Handimon: https://www.facebook.com/pages/category/Local-Service/The-Handiemon-321125221801443/ 


He does great work, is friendly, and reliable. If you would like an  easy DIY wall that is custom made for your home, we carry Stoll Industries. Check out their designs and give us a call to order:

https://www.stollindustries.com/