How to Convert a Wood Fireplace to Electric with a Dimplex 26-Inch Firebox

How to Convert a Wood Fireplace to Electric with a Dimplex 26-Inch Firebox

1. Why Choose the Dimplex 26-Inch Firebox for a Retrofit?

Traditional brick chimney openings often present awkward sizing constraints. Fortunately, the Dimplex 26-inch firebox is engineered specifically to slide neatly into existing hearth cavities.

Key Specifications & Dimensions

• Unit Dimensions: The firebox itself measures 695mm Wide x 575mm High x 222mm Deep.
• Required Framing Opening: For custom timber framing or recessed masonry cavity fitment, your rough opening needs to be 680mm Wide x 585mm High x 229mm Deep.
• Heating Output: Operates at a maximum 2.0kW output (10A current draw) with an integrated electronic thermostat, ideal for supplementing room heating during colder months.
• Year-Round Use: LED Optiflame technology allows independent control of the flame effect without running the heating element.

2. Electrical Requirements & Power Options

When planning to convert wood fireplace to electric heating, managing electrical infrastructure correctly is essential for safety, compliance, and aesthetics.

Power Supply & Connection Methods

The unit requires a standard 230V–240V AC grounded power supply. Depending on your existing layout, you have a few installation options:

• Plugging into an Existing Outlet (DIY): The unit includes a factory-fitted cord and 10A plug on the right-hand side. If you already have an accessible wall socket near the hearth, you can plug the unit directly in. If an extension lead is required, it must be a 3-core cable rated for at least 10 Amps.
• Installing a Concealed Recessed Socket (Electrician Required): To eliminate visible power cords, a standard 10A socket can be installed inside the framed wall cavity or chimney breast behind the unit. Important: Installing any new power outlets or extending fixed wiring must be completed by a qualified, licensed electrician.
• Hardwired Connections (Electrician Required): In commercial settings or specific local jurisdictions, fixed wiring is required instead of a plug-and-socket connection. In these cases, a licensed electrician must perform the hardwiring and incorporate an isolation switch in accordance with local electrical safety standards.

Safety Warning: Always keep the power supply cord clear of the heat outlet grille. Never block the bottom ventilation clearance beneath the unit, as restricted airflow will trip the internal thermal cut-out. Additionally, do not run the unit through external third-party timers or automatic switching devices.

3. Step-by-Step Chimney Preparation

Before installing your electric unit inside an old brick or stone fireplace cavity, perform these crucial preparation steps to protect the equipment and keep cold air out:

4. Installation & Setup Process

Once your chimney cavity is dry, sealed, and wired, fitting the unit takes minimal effort:

• Slide into Position: Carefully align the Dimplex 26-inch unit inside your framed opening or brick opening.
• Install Front Glass Panel: Unpack the protective outer glass. Remove the side metal trim screws, slide the glass pane smoothly into position, and re-secure the trim hardware.
• Power On & Program: Plug the unit in and use the multi-function remote control or hidden panel buttons to configure temperature levels, 8-hour sleep timers, and ambient flame brightness settings.

5. Important: Consult the Installation Manual

Before commencing any physical alterations or electrical work, always review the manufacturer’s official documentation. The user guide outlines critical clearance dimensions, safety warnings, and step-by-step assembly diagrams specific to your unit.

You can download and review the official manufacturer guide here: