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How to Make Drinkable Water Out of Air

This project transforms a common household dehumidifier into a practical tool for extracting drinkable water from the air. By combining the dehumidifier with simple materials like PVC pipes, a water filter, and a storage container, you can create a setup that captures moisture from the air, filters it, and collects it in a safe, reusable container.
The system works by directing the water collected by the dehumidifier into a funnel-and-filter assembly, ensuring the water is clean and safe for consumption. This project is particularly useful for supplementing water storage in emergency or off-grid scenarios, though it depends on electricity and humidity levels for optimal performance.
With its low-cost materials and simple construction, this is an efficient way to harvest additional water resources in environments with limited freshwater access. However, filtering and boiling the water are essential steps to ensure safety
Materials
- Dehumidifier (Example: $39.99 on Amazon)
- Water filter (Example: Sawyer Mini Filter, $24.95)
- Water container (Example: Jerry Can, $31.65)
- PVC pipes (¾” diameter, cut to size, $1.60 per 24-inch length)
- PVC elbows (¾” 90-degree, $0.59 each)
- Screws (1-inch screws, pack of 100, $5.28)
- Metal strapping (100-foot roll, $16.58)
- 1×6 lumber (6-foot board, $8.04)
Tools
- Saw
- Cordless drill with bits and drivers
- Sharp knife
Instructions
Prepare the Dehumidifier:
- Remove the water tank and locate the water discharge port.
- Disable any switch that stops the unit when the tank is full.
Assemble the PVC Pipes:
- Cut a ¾” PVC pipe to direct water flow.
- Attach a 90-degree elbow on each end of the pipe.
Set Up the Water Path:
- Connect a longer PVC pipe to reach your water container below.
- Align the pipe with the dehumidifier discharge port and secure it with metal strapping.
Attach the Filter:
- Cut the bottom off a plastic bottle to create a funnel.
- Attach the funnel to a Sawyer Mini Filter.
Collect Water:
- Insert the filter assembly into the water container opening.
- Activate the dehumidifier to start collecting water.
Notes
Tips for Better Results
- Placement:
- Use in a humid area (e.g., bathroom) for better water production.
- Energy Use:
- If off-grid, consider smaller dehumidifiers powered by 12V batteries.
- Maintenance:
- Clean and replace filters regularly for safe drinking water.
Test Run Results
- Produced ¼ liter of water in 24 hours (dry conditions).
- Taste-tested water: No noticeable taste after filtering and boiling.
Safety Notes
- Water from dehumidifiers isn’t safe to drink directly.
- Always filter and boil water before consumption.
- Do not rely solely on this method as your primary water source.