Electric insert ยท SimpliFire

SimpliFire SF-INS35-SF-SI4432-INS35 Electric Fireplace Insert

Electric insert

Heat output (maker)
5,100 BTU/h
Material
Metal
Dimensions (seller)
11.25"D x 35"W x 23.25"H
Product weight
82 lb
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In short

Built for converting an unused fireplace.

Wins
No vent or chimney.
Gives ground
Supplemental heat only.
Suits
Converting an unused fireplace.

Updated October 2026

What you get

The SimpliFire SF-INS35-SF-SI4432-INS35 Electric Fireplace Insert is an electric insert whose maker rates its heater at 5,100 BTU per hour.

Like most electric fireplaces the flame effect can run with the heater off, using far less power.

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.

No combustion means no venting, no gas line and no carbon monoxide, which is why they go into bedrooms and apartments.

Also on the listing: overall dimensions of 11.25 in (D) x 35 in (W) x 23.25 in (H), a shipping or unit weight of 82 lb and metal construction.

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 numberSF-INS35-SF-SI4432-INS35Retailer
PowerCorded ElectricRetailer
Dimensions (seller)11.25"D x 35"W x 23.25"HRetailer
MaterialMetalRetailer
Mounting / installationInsertRetailer
Heat output (maker)5,100 BTU/hRetailer
Features (seller)CordedRetailer
Product weight82 lbRetailer
Model nameElectric Fireplace InsertRetailer

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

  • No vent or chimney
  • Flame runs without heat

Gives ground

  • Supplemental heat only
  • Heater wattage not stated

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 SimpliFire SF-INS35-SF-SI4432-INS35 Electric Fireplace Insert give?
The listing doesn't state its wattage; check the manual or the label on the unit.

Bottom line

Built for converting an unused fireplace.