Best Thermostats & Heating Controls — WiFi (2026)

Pros

• Controls boiler heating and hot water from the app
• Works with Alexa, Siri and Google Assistant
• Geofencing and open-window detection help cut bills

Cons

• Subscription needed to unlock some advanced features
• DIY install requires access to the boiler wiring

Pros

• Dual zone control for separate heating and hot water schedules
• Works with Amazon Alexa, Google Home and IFTTT
• Expandable with room thermostats and smart radiator valves

Cons

• App can be fiddly to set up multi-zone schedules initially

Pros

• Voice control via Alexa, Google Assistant and Apple HomeKit
• Auto-adapt algorithm learns your home heating pattern
• Sleek minimal design with a companion smartphone app

Cons

• Compatible with individual boiler systems only, not underfloor loops

Pros

• ENERGY STAR certified for lower running costs
• Works with Google Assistant and Amazon Alexa
• Simple app-based scheduling and remote control

Cons

• Fewer boiler-specific hot water controls than UK-focused rivals

Pros

• Controls both heating and hot water schedules from the app
• Boost mode gives up to six hours of extra heating or hot water
• Price includes professional installation by a Hive engineer

Cons

• Ongoing value depends on making use of the app scheduling features

Pros

• Budget-friendly entry point into WiFi heating control
• 5+1+1 day programmable scheduling
• Smart Life/Tuya app plus Alexa and Google Home compatibility

Cons

• App interface less polished than premium rivals

Pros

• Control heating remotely from a smartphone app over WiFi
• Works with most combi and system boilers
• Boiler interface receiver included in the box

Cons

• App interface feels dated compared to newer smart thermostats

Pros

• Controls both heating and hot water schedules from the app
• Compatible with Apple HomeKit, Google Home, Alexa and IFTTT
• Freestanding wireless design gives flexible placement

Cons

• Higher price than heating-only smart thermostats

Pros

• Budget-friendly entry point into WiFi boiler control
• Works with Alexa, Siri and Google Assistant
• Can save up to 10-15% a year on heating bills

Cons

• App interface less polished than premium rivals

Pros

• Compatible with most UK combi boiler systems
• WiFi app scheduling plus Alexa and Google Assistant voice control
• Simple installation without extra wiring for wireless models

Cons

• Newer brand with a smaller review base than established rivals

Pros

• Multi-zone control expandable to up to 16 rooms and 62 radiator thermostats
• Open window detection switches heating off automatically to save energy
• Works with Amazon Alexa, Google Home and IFTTT

Cons

• Combination boilers only for this multi-zone kit
• Higher upfront cost than a single-zone thermostat

Pros

• Full heating control via the EPH Ember smartphone app
• Clean white touchscreen design suits most hallways
• Works with combi and conventional boiler systems

Cons

• App and setup less polished than bigger-name rivals
• Needs a stable WiFi connection for remote control

Pros

• Budget-friendly way to add smart control to a gas boiler
• Works with Alexa and Google Assistant for voice control
• Wall-mounted or tabletop stand options included

Cons

• RF receiver wiring is fiddlier than plug-and-play smart stats
• App interface feels less refined than premium brands

Pros

• Controls both heating and hot water schedules from the app
• Potential savings of up to £130 a year on heating bills
• Freeze protection and geolocation boost features

Cons

• DIY install requires access to boiler wiring
• Some smart features need an ongoing Hive subscription

Pros

• Works with Amazon Alexa and Google Assistant for voice control
• Set up to 6 daily time slots for tailored heating schedules
• Sleek black hub design blends into modern hallways

Cons

• Hot water control needs a compatible boiler setup

Pros

• Wireless install works with most UK combi and system boilers
• Hot water control included alongside heating scheduling
• Works with Amazon Alexa, Apple Siri and Google Assistant

Cons

• Some advanced features sit behind a paid tado subscription

Pros

• Room-by-room control lets you heat only the rooms in use
• Easy DIY installation onto existing radiator valves
• Expandable — add more smart valves to other radiators later

Cons

• Needs the tado bridge for full app and voice assistant control

Pros

• Controls both central heating and hot water schedules from one app
• Compatible with Alexa, Google Home and IFTTT routines
• Expandable with smart radiator valves for room-by-room control

Cons

• More expensive than a heating-only smart thermostat
• Installation needs access to boiler wiring

Pros

• Individual radiator control is far cheaper than a whole-house smart thermostat
• Open window detection helps avoid wasted heating
• Works with Alexa and Google Assistant for voice schedules

Cons

• Needs one TRV per radiator to fully zone a house, which adds up in cost

Pros

• Auto-Adapt learns your home's heating behaviour to save energy
• Works with Amazon Alexa, Google Home and Apple HomeKit
• Weekly schedule and holiday mode controlled entirely via the app

Cons

• Requires a compatible individual boiler and a live/neutral wire
• Advanced history features are tied to the Netatmo app

Pros

• Room-by-room temperature control cuts wasted heating
• Easy DIY installation onto existing radiator valves
• Works with Alexa, Siri and Google Assistant

Cons

• Needs a tado bridge already installed to work
• Batteries need replacing periodically

Pros

• Budget-friendly way to add smart scheduling to a boiler
• No separate hub required — connects straight to WiFi
• Works with Amazon Alexa for voice control

Cons

• Requires a neutral line at the wiring point
• App interface less polished than Hive or tado

Pros

• Wired install gives a reliable always-on connection
• Geofencing pauses heating automatically when everyone is out
• Works with Amazon Alexa, Siri and Google Assistant

Cons

• Wired install is more involved than a battery thermostat
• Some advanced features need a subscription

Pros

• OpenTherm support modulates the boiler for smoother heating
• Simple companion app for schedules and holiday mode
• Works with Amazon Alexa and Google Assistant

Cons

• A combi boiler is required for this specific kit
• Hive Hub needed alongside the thermostat

Pros

• Controls both heating and hot water schedules separately
• Built for conventional (non-combi) boiler systems
• App and voice control via Alexa and Google Assistant

Cons

• Setup is more involved than a combi-only thermostat
• DIY install not recommended — pro fitting advised

Pros

• Universal mounting fits most radiator valve types with included adaptors
• Works with Alexa, Apple HomeKit and Google Assistant
• Easy DIY installation in around 30 minutes per radiator

Cons

• Danfoss RA-type valves may need a separate metal adaptor
• Requires a tado Bridge for full app/geofencing features

Pros

• Compact Hive Nano 3 hub is smaller and easier to place than earlier Hive hubs
• Controls heating and hot water schedules separately for conventional boiler systems
• App and voice control via Amazon Alexa and Google Assistant

Cons

• Designed specifically for conventional (non-combi) boiler setups
• Some multi-room features require additional Hive hardware