Smart home without rewiring: how retrofit works

How Retrofit Pro can reuse a suitable switchboard, and why box depth, wiring, loads and network checks come before an installation promise.

Quick answer: Retrofit smart controls can add supported app and automation functions behind a suitable existing switchboard. They can reuse existing wiring, but “without rewiring” depends on the board, circuit and selected product passing an installation check.

What goes behind the switch?

Tixa Retrofit Pro is designed for compatible existing switchboards. The installer checks how the chosen module connects to the controls and loads. Keep the existing plate only when the complete arrangement is suitable.

Four checks before ordering

Space: measure the box depth and allow for the module, existing connections and safe cable routing.
Wiring: have an electrician check supply, neutral requirements and the condition of the circuit.
Loads: identify lights, fans and heavy-duty appliances, their ratings and any two-way controls.
Network: check Wi-Fi coverage or the required compatible hub for the chosen device family.

What may still need work?

A crowded box, missing required conductor, unsuitable load or damaged wiring can require changes. A new appliance position may need a new cable regardless of whether its control is smart. Confirm that work and its cost before scheduling installation.

Can it work in a rented home?

Ask the owner before changing fixed electrical equipment. Keep a record of the original board and agree who will restore it when you leave. Reuse and reversibility depend on the site; they are not a universal guarantee.

What should I send Tixa?

Send a front view of each switchboard, room names, the controls you need and your fan type. Do not open an energised board for a photo. A qualified installer can check the inside safely. Compare the options in retrofit versus rewiring and use installation and support guides for the selected model.

Plan your next step

Use the Tixa room quotation builder to list your rooms and controls. Tixa will confirm the selected models, compatibility, current prices and installation scope before an order.

Written by the Tixa team. Updated 17 October 2026. Product features depend on the selected model and setup.