Sonoff Zigbee Thermostatic Radiator Valve Review: Budget Zone Heating That Home Assistant Fans Love
A cheap, Zigbee-only TRV with a real display and child lock, loved by Home Assistant and Zigbee2MQTT users but a bit noisy on some radiators.
The Sonoff TRVZB is a battery-powered thermostatic radiator valve aimed at DIY smart heating setups: it needs a Zigbee hub but rewards that with an on-device screen, frost protection, child lock and deep support in Home Assistant and Zigbee2MQTT. Buyers consistently praise the quick install and reliable zone-by-zone temperature control, with the main gripe being audible valve motor noise in quiet rooms like bedrooms and occasional pairing hiccups on some units. For anyone already running a Zigbee hub who wants affordable per-radiator scheduling, it is an easy recommendation.
- Home Assistant and Zigbee2MQTT users
- Multi-radiator homes on a budget
- Renters and DIY installers
- Anyone wanting per-room heating schedules
Pros
- Fast, tool-light installation with included adapters
- Useful on-device display for temperature and status
- Strong Home Assistant and Zigbee2MQTT support
- Child lock and frost protection built in
- Long battery life reported by long-term users
- Works with Google Home and Alexa via a Zigbee hub
Cons
- Requires a separate Zigbee hub to function
- No Apple HomeKit, Matter or SmartThings support
- Valve motor can be audible, especially in bedrooms
- No Wi-Fi, Bluetooth, Z-Wave or Thread connectivity
- Occasional reports of a valve dropping off the mesh
Who is the Sonoff Zigbee Thermostatic Radiator Valve for?
This valve is built for people who already have (or are willing to add) a Zigbee hub and want to turn a manual radiator into a scheduled, app-controlled zone. Reviewers repeatedly mention pairing it with Home Assistant (often via the Versatile Thermostat add-on) and Zigbee2MQTT, and several buyers who previously used other budget TRV brands say they switched to the Sonoff after reliability issues elsewhere. It suits multi-radiator homes since the low price makes it realistic to fit one on every radiator, and it fits older housing stock too: one buyer runs it on a radiator system from 1915. Because it works entirely offline once paired and supports local automations, it is also a good fit for privacy-conscious or automation-heavy smart home setups.
What buyers love
The most common praise is how fast and simple installation is: several reviewers describe fitting it and getting it recognized by their Zigbee gateway within seconds to a couple of minutes, with no special tools beyond the included adapters. The built-in display is a recurring highlight, since it lets anyone in the house check or nudge the temperature without opening an app, matching the product's screen and display-temperature features. Buyers also like the child lock for keeping settings from being bumped by kids, and the frost protection feature for safeguarding pipes in unheated rooms. Several long-time users report the batteries lasting many months, and integration with Google Home, Alexa and Home Assistant via Zigbee comes up often as a selling point over Wi-Fi-only alternatives.
What to know before you buy
The valve requires a compatible Zigbee hub (Sonoff's own bridges, iHost, or a Zigbee2MQTT coordinator); it has no Wi-Fi, Bluetooth, Z-Wave or Thread of its own, and there is no Apple HomeKit, Samsung SmartThings or Matter support, so Apple-centric households will need a workaround like Home Assistant. The most repeated complaint is audible noise from the valve motor when it opens or closes, which several reviewers say makes it a poor fit for light sleepers in a bedroom, especially without the supplied noise-reducing adapter. A handful of buyers also reported connectivity dropouts where a valve became temporarily unreachable on the mesh, and a couple mentioned the documentation and initial percentage-opening calibration could be clearer. These are worth weighing against the low price and strong core heating control.
Is the Sonoff Zigbee Thermostatic Radiator Valve worth it?
For the price, this TRV delivers the core things a smart radiator valve needs to get right: accurate temperature sensing, manual and app-based scheduling, frost protection and a genuinely useful display, all backed by a strong and consistent run of buyer ratings. It is not trying to be a premium, silent, Matter-ready valve, and buyers who need HomeKit or Matter natively should look elsewhere. But for Zigbee households, especially ones already on Home Assistant or Zigbee2MQTT, it is one of the more dependable budget picks for automating heating room by room.
Frequently asked questions
Does the Sonoff Zigbee Thermostatic Radiator Valve need a hub?
Yes. It connects over Zigbee and requires a compatible Zigbee hub or coordinator, such as a Sonoff Zigbee Bridge, Sonoff iHost, or a Zigbee2MQTT setup. It has no Wi-Fi, Bluetooth, Z-Wave or Thread radio of its own.
Does it work with Apple HomeKit or Matter?
No. The valve does not support Apple HomeKit, Matter, or Samsung SmartThings natively. It does support Google Home, Amazon Alexa, and Home Assistant through a Zigbee hub.
Is the valve noisy?
Some buyers report the valve motor is audible when opening or closing, which can be noticeable in quiet spaces like bedrooms. Using the included noise-reducing adapter reportedly helps.
Does it have a display and child lock?
Yes, it includes a built-in screen that shows the current temperature and status, plus a child lock feature to prevent accidental setting changes.
What powers the valve, and how long does the battery last?
It runs on 3x AA batteries. The exact battery life isn't specified by the manufacturer, but several long-term reviewers report the batteries lasting many months of regular use.
Can it protect pipes from freezing?
Yes, it includes a frost protection feature that keeps a minimum temperature to help prevent pipes from freezing in cold weather.










