Which smart thermostat is right for your boiler?
Hive Active Heating is the easiest all-rounder and works with almost any boiler as a simple on/off control. Google Nest Learning gives the best schedule auto-learning but needs careful placement. tado° is the strongest for multi-room/TRV-based zoning without re-piping. Honeywell evohome is the gold standard for full multi-zone (up to 12 rooms) on a single combi or system boiler. We'll recommend based on your boiler, layout and how the house is actually used, not whatever's on offer that week.
OpenTherm vs on/off, and why it matters
Modern combis (Worcester Greenstar 8000, Vaillant ecoTEC, Ideal Vogue Max, Baxi 800) support OpenTherm, a two-way protocol that lets the stat tell the boiler exactly how hard to fire. The boiler modulates down to ~20% output instead of cycling full-on / full-off. Real-world result: quieter operation, lower flow temps, lower bills, less wear. We always wire OpenTherm where the boiler supports it.
Zoning, TRVs and balancing
A single thermostat in the hallway can't make every room comfortable. We'll typically pair a good central stat with quality TRVs (Drayton TRV4, Honeywell, or smart TRVs for full per-room control), then balance the lockshields so each radiator gets the right flow. The result is even temperatures, not 'living room 24, spare room 16'.
Hot water programming on system boilers
On system or regular boilers with a cylinder, hot water is a separate schedule from heating. We set up a sensible default (typically 6–8am and 5–9pm) and show you how to override for one-offs. Includes a Legionella cycle on unvented setups.
What we leave you with
A tidy wiring centre, every wire labelled, your app logged in on your phone (and a partner's phone if needed), schedule loaded, and a one-page summary of what each button and mode actually does. No mystery.
