How to Set Up Your Dyson PH04 Purifier Humidify+Cool

What's in the Box

Your Dyson PH04 Purifier Humidify+Cool package includes the main tower unit, the loop amplifier (upper section), a combination HEPA+Carbon filter, the humidification evaporator, a water tank, a remote control with a magnetized holder, and a quick-start guide. The PH04 is a three-in-one machine that purifies the air, humidifies it using hygienic UV-C technology, and provides cooling airflow — making it suitable for year-round use.

Prerequisites

Before setting up your Dyson PH04, make sure you have:

• A power outlet near your chosen location
• Access to clean, cold tap water for the humidification tank
• At least 12 inches of clearance around the unit for proper airflow
• A 2.4 GHz Wi-Fi network — the PH04 does not support 5 GHz connections
• The MyDyson app installed on your iOS or Android device
• A registered Dyson account

Step-by-Step Setup

1. Assemble the unit: Align the loop amplifier with the top of the base column and press down until it clicks into place. The connection is magnetic and mechanical for a secure fit.
2. Install the filter: Press the release buttons on either side of the base to remove the outer covers. If the HEPA+Carbon filter is not pre-installed, insert it following the directional arrows on the filter housing. Remove any plastic wrapping from the filter. Snap the covers back into place.
3. Install the humidification evaporator: Open the rear panel of the base unit. Slide the evaporator into its slot following the guide rails. The evaporator is designed to fit only one way, so align it carefully. This component works with the built-in UV-C light to kill bacteria in the water before it is released as mist.
4. Fill the water tank: Remove the water tank from the base by lifting it from the top. Take it to a sink and fill it with clean, cold tap water up to the maximum fill line. Replace the tank in the base unit, ensuring it seats properly.
5. Position the purifier: Place the PH04 on a flat, level surface. Because it humidifies, keep it on a water-resistant surface or use a mat underneath. Position it centrally in the room for optimal air distribution. Avoid placing it directly next to walls or curtains.
6. Connect to power: Plug the power cord into the base and into a wall outlet. Press the power button on the machine or remote. The LCD display will illuminate and show startup information.
7. Pair with the MyDyson app: Open the MyDyson app, sign in, and tap "Add a machine." Select the PH04 from the product list. Enable Bluetooth on your phone for initial pairing. The app will display a code that you enter on the machine or will connect automatically via Bluetooth proximity.
8. Connect to Wi-Fi: Follow the app prompts to select your 2.4 GHz Wi-Fi network and enter your password. A Wi-Fi icon will appear on the machine's display once connected.
9. Configure humidification settings: In the MyDyson app, set your target humidity level (typically 40-60% for comfort). The PH04 will automatically adjust its humidification output based on the room's current humidity reading from its built-in sensor.

Smart Home Integration Tips

The Dyson PH04 works with Amazon Alexa, Google Assistant, and Apple Siri Shortcuts. Link your Dyson account in the respective smart home apps for voice control. The MyDyson app provides real-time monitoring of air quality (PM2.5, PM10, VOCs, NO2), temperature, and humidity. Use Auto mode to let the PH04 manage fan speed, purification, and humidification autonomously based on sensor readings. Set schedules in the app for nighttime or while-you-are-away operation.

Quick Troubleshooting

If the PH04 does not appear in the MyDyson app, ensure Bluetooth is enabled on your phone and that you are within range. If the humidifier function does not activate, check that the water tank is filled and properly seated, and that the target humidity level is set above the current room humidity. Clean the water tank and evaporator regularly (Dyson recommends monthly deep cleaning using the machine's cleaning cycle) to prevent mineral buildup and maintain hygienic operation. If the display shows a filter replacement icon, order a genuine Dyson replacement filter and follow the in-app instructions for changing it.