How Much Energy and Money Can a Smart Thermostat Save in the UK

As energy prices remain a major concern for households, many UK homeowners question whether smart thermostats are worth their investment. The short answer is yes - especially when used with smart radiator thermostats for room‑by‑room control. A smart thermostat doesn’t just add convenience; it helps reduce wasted heat, tackle rising cost-of-living pressures and deliver meaningful heating cost savings.

How Much Can a Smart Thermostat Save?

Research by BEAMA and Salford University shows upgrading to a smart thermostat can cut UK household annual heating bills by up to 12%1, saving the average home up to £105 per year (according to the Ofgem average annual energy bill as of 1st April 2026 where the average annual bill sits at £1,755) when using the energy saving features and smart TRVs (thermostatic radiator valves) for tailored multi-room control.

Smart thermostats tend to make the biggest savings impact on homes with:

  • Irregular schedules
  • Rooms that don’t need heating all the time
  • Households that often forget to turn the heating off

With features like geofencing, scheduling, and learning algorithms, a smart, energy‑saving thermostat helps eliminate common sources of wasted heat, therefore decreasing energy bills.

Are Smart Thermostats Worth It in the UK?

Given the potential for £100–£275 in yearly savings, plus greater comfort, control and reduced waste, yes - smart thermostats are worth it in the UK. The payback period is often 1–2 years2, depending on configuration and household, after which the savings continue year after year.

For households battling cost‑of‑living pressures, a smart thermostat is one of the simplest, most effective upgrades you can make.

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1Smart thermostat system percentage savings based on BEAMA and Salford University research statistics 2021. Savings are a guideline and will vary based on your home's thermal performance.

2smarthomeuk.co.uk

3plumbingangels.co.uk

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