---
title: "CFT Fernox App Guide"
description: "After downloading the app and completing registration, you can create a new Commercial Fill Water Test by following the steps below or watching the video guide."
url: https://help.fernox.app/en/articles/120-cft-fernox-app-guide
collection: "Commercial Fill Water Test"
updated: 2026-10-02
language: en
alternates: [es, de, fr, fr-be, pl, nl-be, nl, cs, ro, sv, tr, sk]
---

# CFT Fernox App Guide

After downloading the app and completing registration, you can create a new Commercial Fill Water Test by following the steps below or watching the video guide.

## Fernox App Guide

### Adding a New Commercial Fill Water Test

After downloading the app and completing registration, you can create a new **Commercial Fill Water Test** by following the steps below or watching the **video guide.**

* * *

### Step 1: Start a New Test

1.  Open the app.
    
2.  From the dashboard, tap the **Scan Icon**.
    
3.  In the pop-up menu, select **New Postal Test**.
    
4.  Once your camera opens, point it at the QR code on the sample bottle to scan it.
    

* * *

### Step 2: Enter Customer & Location Details

Fill in the required fields:

-   **Customer Reference**: Add your own reference for reporting purposes.
    
-   **Project Reference**: Optional reference for your records.
    
-   **Company Name**: Enter the company name.
    
-   **Address**:
    
    -   Tap **Address Finder**
        
    -   Enter the postcode
        
    -   Select the correct address from the dropdown
        
    -   (Or choose from **Saved Addresses**)
        

* * *

### Step 3: Enter System Information

Provide details about the system being tested:

-   **System Type**: Select the system type.
    
-   **System Age**: Choose: 0–2 years, 2–10 years or Over 10 years.
    
-   **Inhibitor Protector Used**: Select inhibitor protector used or add it manually.
    
-   **Sample Label**: Type the location where the sample was taken from (e.g., specific part of the system), to help match the sample to the source on commercial systems.
    
    -   **_Heat Appliance Sample_**_: Select this option if the sample was taken from a boiler. If selected, you can enter the appliance details. This field is optional, so you may leave it unselected if the sample was not taken from a heat appliance._  
        

* * *

### Step 4: Submit Sample

-   Select the **Reason for Sampling**;
    
-   Review your answers;
    
-   Tap **Submit.**
    

[

Contents & Preparation

The Commercial Fill Water Test is a paperless, smart phone driven, postal laboratory service designed for commissioning monitoring, and maintaining commercial heating systems. Once the sample has completed laboratory testing, the system will generate a PDF certificate which will be automatically sent to the user that submitted the sample in the mobile application. All the submissions will be stored in your account, so you can access them whenever you want from the mobile application and web portal.

](https://help.fernox.app/en/articles/115-contents-and-preparation.md)