How to Measure for a Fireplace Insert

Written by michael keenan
  • Share
  • Tweet
  • Share
  • Email

Using a fireplace insert can be a visually attractive way to improve the efficiency of your home. According to the Hearth, Patio & Barbecue Association, fireplace inserts can boost efficiency as high as 65 per cent. Fireplace inserts are available for use with six different fuel types. To size your fireplace insert, you need to know the measurements of your existing hearth.

Skill level:

Things you need

  • Measuring tape

Show MoreHide


  1. 1

    Measure the opening height in inches.

  2. 2

    Measure the width of the fireplace in inches at the opening and at the back of the hearth.

  3. 3

    Measure how deep the hearth extends into the wall in inches.

  4. 4

    Measure the available room for a hearth extension. The hearth extension is the slab that extends out from the hearth into the room.

Tips and warnings

  • The Hearth, Patio & Barbecue Association recommends that you have your fireplace insert professionally installed to make sure it meets state and local building codes.

Don't Miss

  • All types
  • Articles
  • Slideshows
  • Videos
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the site, you consent to the use of cookies. For more information, please see our Cookie policy.