Electric insert ยท Signature Design by Ashley

Signature Design by Ashley W100-02 24-Inch Electric Fireplace Insert

24-inch electric insert, 400 W

Heats up to (maker)
400 sq ft
Heat output (maker)
5,100 BTU/h
Wattage
400 W
Flame effects
5
Material
Glass, Metal
Dimensions (seller)
8.5"D x 23.75"W x 20.06"H
Prices change often; the button shows today's price.

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In short

Built for converting an unused fireplace.

Wins
1,365 BTU/h of heat.
Gives ground
Supplemental heat only.
Suits
Converting an unused fireplace.

Updated October 2026

What you get

The Signature Design by Ashley W100-02 24-Inch Electric Fireplace Insert is an electric insert with a 400-watt heater, which works out to about 1,365 BTU per hour (3.412 BTU per watt).

At 400 watts it uses about 0.4 kWh an hour on high and draws 3.3 amps at 120 volts; keep it on a circuit without other big loads. Price it at your electricity rate.

The maker says it heats up to 400 square feet; as with any 120-volt heater, read that as supplemental heat for one room.

The listing states 5 flame settings, and like most electric fireplaces the flame can run with the heat off.

As an insert it slides into an existing fireplace opening; measure the opening width, height and depth against the body dimensions, and the face against the trim. How to measure.

Electric fireplaces burn nothing, so they produce no carbon monoxide and need no vent, chimney or gas line.

Also on the listing: overall dimensions of 8.5 in (D) x 23.75 in (W) x 20.06 in (H), a shipping or unit weight of 37 lb and glass, metal construction.

Warranty, per the listing: Please refer to product description or store page.

The figures, from the maker

Each figure is the maker's or the listing's own, with its source marked. A figure the maker doesn't give is shown as not stated.

Model numberW100-02Retailer
PowerCorded ElectricRetailer
Dimensions (seller)8.5"D x 23.75"W x 20.06"HRetailer
MaterialGlass, MetalRetailer
Mounting / installationInsertRetailer
Heat output (maker)5,100 BTU/hRetailer
Features (seller)Tv StandRetailer
Model nameW100-02Retailer
WarrantyPlease refer to product description or store page.Retailer
Product weight37 lbRetailer
Heats up to (maker)400 sq ftRetailer
Wattage400 WRetailer
Flame effects5Retailer

Is it the right heater for the room?

Pick it when

  • Converting an unused fireplace
  • Rooms where gas or wood can't go

Pass on it when

  • Heating a whole house
  • Circuits already near their limit

Where it wins, where it gives ground

Wins

  • 1,365 BTU/h of heat
  • No vent or chimney
  • Flame runs without heat
  • 5 flame settings

Gives ground

  • Supplemental heat only
  • Draws 3.3 A on high

Know before you install

  • Figures are the maker's own and are rated in the maker's conditions. Installation, venting, chimney, gas and electrical work follow the manual and local code, carried out by a qualified installer.

Heaters to weigh against it

Other electric fireplaces and stoves in the same heat range

Every electric fireplaces and stoves on one chart

Buying this model

The button opens this exact model's listing. Prices and stock change, and installation parts are usually sold separately; check the box contents and the manual's venting list before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions about this model

How much heat does the Signature Design by Ashley W100-02 24-Inch Electric Fireplace Insert give?
About 1,365 BTU per hour on its 400-watt setting, since each watt gives 3.412 BTU per hour.
Can the Signature Design by Ashley W100-02 24-Inch Electric Fireplace Insert share a circuit?
It draws about 3.3 amps at 120 volts on high, most of a 15-amp circuit; the manual says how to connect it.

Bottom line

Built for converting an unused fireplace.