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Small electrical jobs Lights, switches, sockets and grouped minor fixes. Fault finding Tripping circuits, dead points or unclear symptoms. Electrical repairs Contained repairs once the likely issue is clearer. Sockets and switches Accessory swaps, small upgrades and grouped points. Emergency electrician Unsafe, urgent or call-first electrical problems. EICR Inspection and report questions. Consumer unit replacement Board replacement, testing and compliance questions. Kitchen rewire Kitchen renovation wiring, appliances and first fix.

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Smart thermostat installation Thermostat swaps, setup and heating handover. Video doorbell wiring Doorbell power, chimes and entrance checks. CCTV installation Camera positions, power and network fit. Lighting installation Indoor fittings, LEDs, dimmers and room lighting. Outdoor lighting Outside lights, PIRs, paths and entrance lighting. Entry systems Door entry, release side and access upgrades. Intercoms Handsets, monitors and entry repair checks. Home automation Joined-up lighting, heating, sensors and routines.

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Easier-living changes Controls, routines and access that feel easier day to day. Shared access Family or carer access and account handover. Night-time lighting routines Safer, calmer lighting after dark. Voice control and routines Voice, buttons, schedules and manual fallback.
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System check before smart thermostat installation

Before a smart thermostat is fitted, the first step is to check the current controls and the likely fit for the chosen model.

Written and checked by Willesden Smart Homes. Last reviewed August 2026.

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We serve homes across NW London after checking the postcode and the job. See the Areas page .

This guide explains what usually gets checked first, what photos make the fit clearer, and when a thermostat swap stays straightforward or turns into wider heating-control work.

What this usually means

A system check is the practical first look at the existing heating controls before the install is treated as straightforward. It helps confirm what is already controlling the heating, what the chosen thermostat needs, and whether the cleanest next step is a tidy swap, a rescue setup or a wider control tidy-up.

What gets checked first

  • The current thermostat, programmer and any receiver or control point already running the heating.
  • Whether the setup looks like a normal replacement job or a half-finished smart-thermostat setup that needs putting right first.
  • Whether the chosen model and everyday handover plan look sensible for the people actually using it.

What to send for a quicker first answer

  • A clear photo of the current thermostat and any nearby programmer or control panel.
  • A clear photo of the receiver, boiler controls or the place a smart receiver would likely sit, if that area is safely accessible.
  • Your postcode, any model already bought, and a short note on whether the aim is replacing old controls, finishing an unfinished setup or checking what fits best.

What can change the scope

  • More than one heating zone, separate hot-water control, awkward access or unclear existing wiring can make the first check less straightforward.
  • Poor previous work, missing parts or a mismatch between the bought device and the current system may mean a different thermostat fit or wider remedial work makes more sense first.
Official sources and further guidance

Need the heating-control fit sense-checked?

Send your postcode, photos of the current controls and any thermostat model already bought. I’ll suggest whether the cleanest next step looks like a straightforward thermostat swap, a rescue setup or a wider heating-control tidy-up.

Send details Smart thermostat page