24 Inch Electric Fireplace Insert: Sizing and Installation Steps
By Ceiling Fans, Home Store for Light Fixtures | Published: 2026-11-03
Category: Guide pratiche
Learn how to size a 24 inch electric fireplace insert for your opening, plan the recessed fit, and install it with a remote-controlled model step by step.
Quick answer
Measure your opening first, then choose a 24 inch electric fireplace insert that fits with clearance for the trim and cord. Plan the recessed depth and a nearby outlet before you install, and test the unit with and without heat before finishing the surround.
Sizing starts with the opening, not the listed width
A 24 inch insert is a nominal size, so the actual unit can be slightly wider or narrower than 24 inches. Measure the width, height, and depth of your existing opening at the narrowest point, and compare those numbers with the insert's own dimensions rather than the product name. If the opening is framed but unfinished, account for the trim or surround that will overlap the edges.
Depth matters as much as width. A recessed electric fireplace needs enough cavity depth for the body plus the plug and cord, and a flush look usually requires the unit to sit back far enough that the front trim sits against the wall. If your wall is shallow, a partially recessed or surface-mounted plan may be the more honest choice.
Plan power and heat clearance before the surround goes on
Decide where the cord will exit and whether an outlet is reachable without an extension cord running across the hearth. The 24.2-inch black fireplace in this guide includes a handheld remote, so you can operate it without reaching into the opening, but the outlet still needs to be accessible for the plug.
Electric inserts can run flame effects with or without heat, which is useful for year-round ambiance. Keep combustible materials and the mantel area clear according to the insert's instructions, and leave space around the unit so heat can move away rather than collect behind the trim.
When a 24 inch insert is the wrong fit
A 24 inch insert suits a compact bedroom, home office, or a smaller existing firebox, not a large living-room wall that needs a wider focal point. If your opening is much wider than the insert, you will need a surround or filler panel, and the result can look like a small unit in a large hole.
If the cavity is too shallow for the body and plug, or the outlet is on the opposite wall, stop before cutting. A different depth or a surface-mount design is usually less work than rebuilding the wall.
Installation steps for a 24 inch insert
- Measure the opening three ways: Record the width, height, and depth at the tightest point of the opening, then compare them with the insert's actual dimensions and required clearances from its installation instructions. Common mistake: trusting the 24 inch label instead of the measured body size. Write the numbers down and keep them with the product paperwork.
- Confirm the recessed depth and cord route: Check that the cavity is deep enough for the insert body plus the plug and cord, and identify where the cord will exit to a reachable outlet. Common mistake: discovering the plug has no room after the surround is fixed. If the plug will not fit behind the unit, revise the plan before cutting.
- Prepare the opening and power: Remove the old insert or finish the framed opening, and make sure the outlet is accessible and the circuit is suitable for the unit. Common mistake: running the cord through a tight gap that pinches it. Test the outlet with a lamp before the insert goes in.
- Set the insert and check the fit: Slide the unit into the opening without forcing it, and check that the trim sits evenly against the wall and the front is not under stress. Common mistake: shimming only one side, which leaves the trim crooked. Adjust the shims until the trim is level on all sides.
- Test flame and heat before finishing: Plug in the unit, pair or use the remote, and run the flame effect with and without heat. Common mistake: sealing the surround before confirming the remote works and the heater runs. Run the heat setting long enough to confirm warm air moves freely.
- Finish the surround and clear the mantel: Complete the trim or mantel, then keep combustible items and the mantel area clear as the instructions specify. Common mistake: placing decor directly over the heat outlet. Recheck clearances after any mantel or shelf is added.
Product facts
- 24" Insert Black Electric Fireplace with Remote Control: This 24.2-inch black fireplace insert has realistic wood and flame effects and can be used with or without heat. You can enjoy the look in warmer months without running the heater, which makes it more flexible for a bedroom or office.
24" Insert Black Electric Fireplace with Remote Control - 24" Insert Black Electric Fireplace with Remote Control: It is operated with an included handheld remote and comes with detailed installation information. The remote lets you control the unit after it is recessed, and the installation details are the first place to check clearance and power requirements.
