Are smart thermostats actually worth fitting?

Smart controls save money in two ways: heating rooms only when they're used, and stopping the boiler overshooting. Fitted well, alongside thermostatic radiator valves and a properly balanced system, savings are real.

Fitted badly, they're an expensive wall ornament. The gain comes from the whole set-up: correct flow temperature, balanced radiators, sensible schedules.

JGH fits and configures the controls, sets your first heating schedule with you, and shows you how to run it from your phone before leaving. Several customers came in with a thermostat fault and left with a system that finally does what they want.