How Do I Set Up the Eve Thermo Radiator Valve?

Problem Description

You are installing the Eve Thermo smart radiator valve on your radiator. The Eve Thermo replaces your manual radiator valve. Check that the valve adapter included fits your radiator — most European radiators use M30x1.5 threading. Adapters for Danfoss RA and RAV are included. This guide covers checking compatibility, removing the old valve, and pairing with HomeKit.

Why This Happens in Real Homes

The Eve Thermo is a smart thermostatic radiator valve that replaces your manual radiator valve, giving you app and schedule control over each radiator - it's designed for European hydronic radiators and works with Apple HomeKit over Bluetooth or Thread. The install hinges on the adapter fitting your valve: most European radiators use M30x1.5 threading, and adapters for Danfoss RA and RAV valves are included, so check compatibility before removing anything. Fully remove the old manual valve head and seat the Thermo squarely; a valve that isn't seated properly won't regulate the radiator correctly.

On the smart side, it follows Eve's HomeKit model: no WiFi, pairs over Bluetooth (and Thread with a border router), and schedules and remote control run through an Apple home hub. A Thermo that shows No Response is a connectivity gap - out of Bluetooth range of a hub or a Thread mesh that doesn't reach the room - so confirm the hub is online and, for Thread, that the border router is up. It runs on AA batteries, so replace them if low, since weak batteries cause drops and sluggish valve movement. If the temperature it reads seems off (radiators create local heat that can skew a valve-mounted sensor), apply a temperature offset in the Eve app to calibrate it, and keep the firmware current for accurate scheduling.

Symptoms

• Installing the Thermo on a radiator
• Adapter doesn't fit the radiator valve
• Thermo won't pair with HomeKit
• Radiator not heating/regulating correctly
• Thermo shows No Response
• Temperature reading seems off
• Works locally but not remotely
• Schedule not controlling the heat

Recognize these? Here's what usually causes it.

Common Causes

• Wrong valve adapter for the radiator thread
• Old valve not fully removed / not seated
• Bluetooth out of range of the home hub
• Thread mesh gap / border router offline
• No Apple home hub for schedules/remote
• Batteries dead or low (2x AA)
• Temperature offset needed for accurate reading
• Firmware out of date

Tools & Requirements

Step-by-Step Solution

1

Check valve adapter compatibility

The Eve Thermo replaces the manual radiator valve on European-style hot water radiators. It includes adapters for common valve connections: M30 x 1.5mm (most common), Danfoss RA, Danfoss RAV, and Danfoss RAVL. Check your existing radiator valve connector type before installation. If your valve has a different thread size, you may need a third-party adapter ring. The Eve Thermo does not work with US-style forced-air HVAC systems — it is specifically for hot water radiator valves.

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2

Install the Eve Thermo on the radiator

Turn the existing manual valve to the maximum position. Unscrew the old valve head (turn counterclockwise — most are hand-tightened). Attach the correct adapter ring for your valve type. Screw the Eve Thermo onto the valve (clockwise until firm, do not overtighten). The unit is powered by 2 AA batteries. Install the batteries and the Eve Thermo runs an initial calibration — the motor drives the valve pin through its full range to learn the open and closed positions.

3

Pair with the Eve app and set schedules

Open the Eve app > Add Accessory > scan the HomeKit code on the Eve Thermo. Assign it to the room where the radiator is located. Set heating schedules: tap Schedules > add time blocks for each day. For example: 20°C from 6AM-8AM and 5PM-10PM (when you are home), 16°C during work hours, and 14°C overnight. The Eve Thermo stores schedules on-device — they run even without a home hub.

4

Calibrate the target temperature

If the room temperature does not match the set target: the Eve Thermo measures temperature at the valve, which is near the radiator and reads warmer than the room center. In the Eve app, use the Temperature Offset setting to compensate — typically -1°C to -3°C. Place a separate thermometer in the room center, compare to the Eve reading, and adjust the offset. For better accuracy, pair with an Eve Room or Eve Weather sensor for room-level temperature readings.

5

Fix motor or valve issues

If the Eve Thermo displays an error or the valve does not move: the valve pin may be stuck. Remove the Eve Thermo from the radiator. Check the valve pin — press it with your finger. It should spring back freely. If stuck, tap it gently with a small hammer or apply penetrating oil and work it back and forth. A stuck pin prevents the Eve Thermo motor from controlling flow. Reinstall the Eve Thermo and run calibration again. If the motor itself is noisy or grinding, replace the batteries — weak batteries cause erratic motor behavior.

Quick Solutions

Still having issues? This is usually the deeper cause below.

Need More Help? Eve Support

Note: The contact information below connects you directly to Eve's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.