The short version: The Eve Thermo is a Matter-over-Thread smart radiator valve (TRV) that swaps onto a hydronic radiator’s manual valve. It’s built around Apple Home rather than a broad multi-ecosystem app, runs locally without a mandatory cloud account, and independent reviews (Trusted Reviews, the5krunner, HomeKit-focused outlets) rate it well for Apple households. It’s not the right pick if Alexa or Google Assistant is your main voice assistant.

This controls one radiator at a time. It’s a different category from the central thermostats covered elsewhere on this site and has no relevance to electric baseboard or forced-air homes.

Who It’s For

The Eve Thermo suits hydronic (hot water) or steam radiator heat, which shows up in older Montreal walk-ups, pre-war Toronto apartments, and converted heritage homes with boiler heating. It does nothing for the electric baseboard heaters common across most of the country — see our baseboard thermostat coverage (Mysa, Sinopé, Stelpro) for that instead, and don’t confuse the two categories when shopping.

Within the radiator-valve category specifically, this is for Apple Home households. Where Tado and Aqara bridge to Alexa and Google Assistant alongside HomeKit, Eve’s product line is designed primarily for iPhone/iPad users who want local control through the Home app with minimal cloud dependency. If Alexa or Google is your default assistant, Tado X or Aqara E1 will serve you better.

Design & Build

The Thermo has the same rounded white cylinder shape as most competing TRVs, with a small onboard display showing the setpoint. Eve’s build quality is consistently well regarded across its sensor and plug lineup, and the Thermo follows the same design approach: solid housing, clean typography on the display, functional manual dial.

Setup & Compatibility

Valve fit: Built for M30 x 1.5mm threaded valves, with adapters included for common Danfoss and European valve types. Measure your radiator’s existing valve before ordering — some older steam systems in Canadian heritage buildings use incompatible valve bodies.

Thread requirement: The current Eve Thermo runs on Matter over Thread and needs a Thread border router on your network. Many HomePod minis, Apple TVs, and recent smart speakers already provide one; Eve doesn’t sell a proprietary bridge, so you’re relying on existing Thread infrastructure from Apple, Google, or Amazon devices.

Power: Two AA batteries, no wiring. Schedules are stored locally on the device, so automations keep running even if your hub or phone is offline — a real advantage reviewers highlight over more cloud-dependent competitors.

App & Ecosystem

Control runs through the Eve app or natively through Apple’s Home app, without a mandatory account or cloud login for core functionality — consistent with Eve’s privacy-first positioning. Because it runs Matter, it also connects to Google Home, Amazon Alexa, and SmartThings, but the deepest feature set and most refined app experience remain on Apple hardware.

Standout Feature: Local-First Control

Rather than routing everything through a manufacturer cloud, Eve Thermo stores schedules locally and operates over the Thread mesh. That means no subscription, no cloud-outage risk for basic scheduling, and less data leaving your network than with more cloud-reliant TRVs like Tado or Aqara. For privacy-conscious buyers, that’s the clearest differentiator in this category.

Price & Value

Eve Thermo
Price per valve (CAD) ~$100–130
Bridge/hub required No proprietary bridge; needs a Thread border router (often already present)
Power 2x AA batteries
Subscription required No

Eve Thermo is priced similarly to Tado X and higher than Aqara or Sonoff. You skip a proprietary hub purchase since it relies on Thread infrastructure you may already have, but per-valve cost still matters in a multi-radiator apartment — a five-radiator unit runs $500+ before you’ve bought anything else. Most Canadian utility rebate programs are structured around central smart thermostats rather than per-radiator TRVs, so confirm eligibility directly rather than assuming it — see Smart Thermostat Rebates in Canada by Province.

Pros & Cons

Pros:
– No mandatory cloud account or subscription for core scheduling
– Local Thread-based control continues working during internet or hub outages
– Build quality and app polish consistent with Eve’s broader HomeKit lineup
– No proprietary bridge purchase if you already have Thread infrastructure

Cons:
– Alexa/Google support via Matter exists but the experience favours Apple Home
– One of the pricier TRVs per valve
– M30 x 1.5 threading isn’t guaranteed to fit older Canadian radiator valves
– Weak fit if you’re not already using Apple devices day to day

Smart radiator valves compared: Eve Thermo, Tado X, Aqara E1, Sonoff TRVZB, Danfoss Ally, SwitchBot, with ecosystem fit, hub requirements, and price per unit

The Recommendation

Buy the Eve Thermo if you’re an Apple Home household with hydronic radiator heat and want local, privacy-focused control without a subscription or proprietary hub.

Skip it if Alexa or Google Assistant is your primary voice assistant — Tado X or Aqara E1 cover those ecosystems more fully — or if your home doesn’t have radiator heat at all.

Frequently Asked Questions

Does the Eve Thermo work with Alexa or Google Assistant?
Yes, via Matter, but the deepest app experience and feature set are built around Apple Home.

Does the Eve Thermo need a hub?
No proprietary Eve bridge, but it does need a Thread border router on your network — many current Apple, Google, and Amazon smart speakers already include one.

Will it fit my radiator valve?
It’s built for M30 x 1.5mm threaded valves with included adapters for common Danfoss and European types. Check your valve before ordering, particularly with older steam radiators.

Is a subscription required?
No. Scheduling and core control run locally without a subscription.

Does this qualify for a Canadian rebate?
Generally no — most provincial and utility programs are built around central thermostats, not per-radiator TRVs. Confirm with your specific program before assuming eligibility.