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Radiator Valves · Head to head

Shelly BLU TRV vs SwitchBot Smart Radiator Thermostat

Full Smart Radiator Valves comparison in 2026

Updated September 2026
Data from Amazon and official Shelly and SwitchBot sites.
2026 verdict
Fewer battery swaps and a longer warranty make the Shelly BLU TRV the better smart radiator valve of this Bluetooth pair.
Shelly BLU TRV
Winner
Shelly BLU TRV
$64.99
Buy on Amazon USACheck price
It is the better reviewed of the two, runs a rated 2 years on two AA cells against 10 months, carries a 2 year warranty against 1 year, and reaches Wi-Fi through a Shelly BLU Gateway for Google Home, Alexa and SmartThings. The SwitchBot Smart Radiator Thermostat is the cheaper valve and the one with the wider reach: through a SwitchBot Hub it adds Apple Home and Matter, which the Shelly does not offer at all, and it brings frost protection and automatic scheduling the Shelly lacks. Both show the temperature on a built-in screen and can take the room reading from a separate sensor. Pick the Shelly BLU TRV for a set-and-forget valve in a Google, Alexa or SmartThings home, and the SwitchBot Smart Radiator Thermostat for Apple Home, Matter or a tighter budget.
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FeatureShelly BLU TRVSwitchBot Smart Radiator ThermostatWinner
Price$64.99€29.00SwitchBot Smart Radiator Thermostat
Rating4.13.9Shelly BLU TRV
Warranty2 years1 yearShelly BLU TRV
Battery Life2 years10 monthsShelly BLU TRV
Connectivity2.4 GHz WiFi, BluetoothBluetoothShelly BLU TRV
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterSwitchBot Smart Radiator Thermostat
Frost ProtectionNOYESSwitchBot Smart Radiator Thermostat
ScreenYESYESTie
SensorsTemperatureTemperatureTie

What the differences mean

Battery life

The Shelly BLU TRV is rated for 2 years on its two AA cells, the SwitchBot Smart Radiator Thermostat for 10 months on the same pair. In practice that is a battery change every other winter against one every heating season, multiplied by every radiator in the house.

The extra box each one needs

Both valves talk Bluetooth only at the radiator. The Shelly BLU TRV needs a Shelly BLU Gateway kept powered for Wi-Fi, remote control and voice assistants; the SwitchBot Smart Radiator Thermostat needs a SwitchBot Hub for Google Home, Alexa, Apple Home, SmartThings and Matter. Budget for one either way unless you only use the phone app nearby or Home Assistant.

Apple Home and Matter

This is the split that settles it for some homes. The SwitchBot Smart Radiator Thermostat reaches Apple Home and Matter through its hub, which acts as a Matter bridge. The Shelly BLU TRV supports neither, so an Apple Home household should not start with it.

Frost protection and scheduling

The SwitchBot Smart Radiator Thermostat has frost protection, which keeps a room left empty in winter from dropping low enough to risk the pipes, and it supports automatic scheduling on top of manual schedules. The Shelly BLU TRV has neither, so its schedules are the ones you set by hand.

Warranty

The Shelly BLU TRV comes with 2 years of warranty and the SwitchBot Smart Radiator Thermostat with 1 year, which matters on a device that sits on a hot radiator all winter.

Which one to buy if

Winner
Shelly

Shelly BLU TRV

$64.99
Buy on Amazon USACheck price
  • + Rating: 4.1
  • + Warranty: 2 years
  • + Battery Life: 2 years
  • - Price: $64.99 vs €29.00
  • - Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter

What owners say

Owners of both valves agree on installation: the Shelly BLU TRV and the SwitchBot Smart Radiator Thermostat both go on in minutes with the adapters in the box. Beyond that they notice different things. Shelly BLU TRV owners single out quiet, accurate regulation and a gateway link they find steadier than the Zigbee valves they replaced, while their complaints are about Alexa responding inconsistently, Bluetooth range that depends on where the gateway sits and a built-in reading warmed by the radiator unless an external sensor is added. SwitchBot Smart Radiator Thermostat owners praise the sizing template, the clear app schedules and how well it behaves in Home Assistant over a Bluetooth proxy, and their warnings are schedules that did not stick, a valve overshooting the target, a fiddly display rotation and a top knob that detaches too easily.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Shelly BLU TRV
  • SwitchBot Smart Radiator Thermostat

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Frequently Asked Questions

Which is better overall: Shelly BLU TRV or SwitchBot Smart Radiator Thermostat?

The Shelly BLU TRV, for its better reviews, a rated 2 year battery life against 10 months and a 2 year warranty against 1 year. The SwitchBot Smart Radiator Thermostat is cheaper, adds frost protection and automatic scheduling, and is the one that reaches Apple Home and Matter.

What is the biggest difference between the Shelly BLU TRV and the SwitchBot Smart Radiator Thermostat?

Which ecosystems they reach. The Shelly BLU TRV works with Google Home, Alexa and SmartThings through a Shelly BLU Gateway, and with Home Assistant, but not with Apple Home or Matter. The SwitchBot Smart Radiator Thermostat reaches all of those, Apple Home and Matter included, through a SwitchBot Hub, and Home Assistant directly over Bluetooth.

Do the Shelly BLU TRV and the SwitchBot Smart Radiator Thermostat need a hub?

For anything beyond the phone app, yes. The Shelly BLU TRV needs a Shelly BLU Gateway powered at all times for Wi-Fi and voice control, and the SwitchBot Smart Radiator Thermostat needs a SwitchBot Hub for Google Home, Alexa, Apple Home, SmartThings and Matter.

Which lasts longer on batteries, the Shelly BLU TRV or the SwitchBot Smart Radiator Thermostat?

The Shelly BLU TRV, rated for 2 years on two AA cells. The SwitchBot Smart Radiator Thermostat is rated for 10 months on the same two AA cells, roughly one heating season.

Do the Shelly BLU TRV and the SwitchBot Smart Radiator Thermostat have a child lock?

The Shelly BLU TRV has no child lock and no geofencing. SwitchBot does not document either feature for the SwitchBot Smart Radiator Thermostat, so check with SwitchBot if a child lock matters to you.

Who should buy the Shelly BLU TRV?

Buyers in a Google Home, Alexa or SmartThings home who want the longest time between battery changes and a 2 year warranty, and especially anyone who already runs a Shelly BLU Gateway.

Who should buy the SwitchBot Smart Radiator Thermostat?

Apple Home and Matter households, buyers who want frost protection for rooms left unheated, and anyone fitting out many radiators who wants the cheaper valve.

Full comparison table

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