

23 Inches Electric Fireplace Insert 750W/1500W Fireplace Heater
A 23" recessed electric fireplace delivering 5,000 BTU with adjustable flame colours, a thermostat and a built-in timer.
● In stock
Free delivery · 2–4 working days
Free to UK mainland (DHL/DX/DPD), in-stock items ship within 24h. Excludes Channel Islands, Isle of Man, Scilly Isles & Scottish Islands; a surcharge may apply to some remote areas.
30-day returns
Change your mind within 30 days. Sold & shipped via Costway.
Manufacturer warranty included
Covered against manufacturing defects. Real UK aftercare.
This Costway 23-inch recessed electric fireplace is an electric heater that pairs a realistic flame display with practical comfort controls. Two heat settings – 750W and 1500W – warm rooms up to 37m² (400 sq ft), while a thermostat adjustable from 18°C to 28°C holds your target temperature and a 1-8 hour timer lets you set it and forget it. On full 1500W power it costs around 39p per hour at 26p/kWh, dropping to roughly 20p on 750W and less once the thermostat starts cycling. As a 100% efficient electric heater it's ideal for zone heating a single room rather than heating the whole house. Personalise the look with 3 flame colours and 3 brightness levels, all controllable from the panel or the included remote, and run the flame independently of the heat for year-round ambiance. Built-in overheat protection keeps it safe, and the metal and tempered-glass build feels solid at just 8kg. The slim 58.4 x 12.9 x 43.4cm profile recesses neatly – just keep the back 5cm clear of the wall for ventilation. In the box: the electric fireplace insert, remote control and instruction manual.
Highlights
- 5,000 BTU output for spaces up to 37m²
- 750W and 1500W heat settings
- Thermostat adjustable from 18°C to 28°C
- 3 flame colours and 3 brightness levels
- 1-8 hour timer
- Overheat protection with remote control
Description
This electric fireplace insert produces 5,000 BTU and warms spaces up to 37m² (400 sq ft), with 750W and 1500W settings for precise temperature control. The thermostat adjusts from 18°C to 28°C, and a 1-8 hour timer lets you set it and forget it.
Personalise the look with 3 flame colours and 3 brightness levels, all controllable from the panel or included remote. The flame can run independently of the heat for year-round ambiance.
Safety is covered by built-in overheat protection. Keep the back 5cm clear of the wall for ventilation.
What's in the box
- Electric fireplace insert
- Remote control
- Instruction manual
Specifications
- Heat output
- 5,000 BTU
- Power
- 750W / 1500W
- Coverage area
- 37 m² (400 sq ft)
- Thermostat range
- 18°C - 28°C
- Voltage
- 220-240V, 50Hz
- Current
- 12.5A
- Dimensions
- 58.4 x 12.9 x 43.4 cm (L x W x H)
- Power cord length
- 1.8 m
- Net weight
- 8 kg
- Material
- Metal, tempered glass
Ideal for
23 Inches Electric Fireplace Insert 750W/1500W Fireplace Heater — FAQs
Does the 23" Electric Fireplace have a timer and thermostat?
Yes. It has a thermostat adjustable from 18°C to 28°C and a 1-8 hour timer, both controllable from the panel or included remote.
How much does the 23" Electric Fireplace cost to run per hour?
On 1500W it costs around 39p per hour at 26p/kWh, dropping to about 20p on 750W and lower still once the thermostat cycles.
What size room does it heat?
It warms spaces up to 37m² (400 sq ft), suitable for an average living room or as zone heating in a larger home.
Can the flame run without heat?
Yes. The 3 flame colours and 3 brightness levels can run independently of the heat for year-round ambiance.
How much wall clearance does it need?
Keep the back at least 5cm clear of the wall for ventilation. At 12.9cm deep it recesses neatly into media units and openings.
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