How to Connect Vaillant Heat Pumps and Boilers with the Zerofy App

Preconditions:

• Your Vaillant heating system should be internet-enabled and compatible with cloud connectivity.
• You need your device’s serial number to connect.

Finding Your Serial Number

The serial number is typically a 28-character code starting with “21” and ending with the letter ‘N’ followed by a single digit.

Where to find it:

Device Type	Location
Boilers	Underneath the boiler or on the control panel
Heat Pumps (Outdoor Unit)	On the back of the unit
Heat Pumps (Indoor Unit)	On the back of the control box

The serial number can also be found in the benchmark logbook provided by your installer after installation.

Connecting Your Vaillant System with Zerofy

1. Open Zerofy.
2. Add a new Vaillant device.
3. Enter the serial number of your Vaillant heating system.
4. Follow the on-screen prompts to complete the connection.

Features and Things to Know

With Vaillant integration, you can:

• Monitor your heat pump or boiler remotely.
• View energy consumption and heating data.
• Monitor and adjust temperatures directly from the app.
• Optimize heating efficiency based on energy prices and solar production.

Visible Devices

For compatible heat pumps, two devices will appear in Zerofy:

• Space Heating – controls and monitors the heating circuit
• Hot Water Tank – controls and monitors the domestic hot water

Autopilot Integration

The Autopilot currently controls the hot water tank. It automatically boosts hot water production when:

• Electricity prices are low
• Excess solar energy is available

This helps maximize self-consumption and reduce energy costs without any manual intervention.