A large plastic or metal container for the body, a small electric fan, evaporative cooling pads (commercial pads, or sponge material/burlap), a small submersible water pump, PVC pipe and fittings, tubing, a separate water reservoir, plus glue, screws, sealant, a drill, and a saw for assembly.
DIY Swamp Cooler TikTok Hack

A swamp cooler, or evaporative cooler, is an energy-efficient alternative to central air conditioning, especially in dry climates -- it cools air by evaporating water. Building your own is a fun, budget-friendly project that can keep you comfortable through the hottest months.
Materials Needed
Step 1-3: Build the Body and Water System
Cut openings slightly smaller than your cooling pads into the sides of the container and fit the pads securely in place. Run PVC pipe along the top of the container above the pads and drill small holes along its length so water drips evenly over them. Connect tubing from the pump (placed in the reservoir) to the PVC pipe.
Step 4-5: Add the Fan and Power
Cut an opening in the top sized for your fan so it draws air through the pads and into the container, securing it with glue, screws, or sealant to prevent leaks. Connect both the pump and fan to power, keeping all electrical connections safely away from water.
Step 6-7: Fill, Test, and Fine-Tune
Fill the reservoir, turn on the pump so water drips evenly over the pads, then turn on the fan -- the air coming out should feel noticeably cooler thanks to evaporation. Check for leaks or escaping air and seal as needed, adjusting fan speed and water flow to optimize the effect.
Tips for Efficient Cooling
Use cold water in the reservoir (adding ice gives an extra boost), clean the cooling pads regularly to prevent mold and replace them when worn, place the cooler in a well-ventilated spot, and keep in mind it works best in low-humidity climates.
Benefits of a DIY Swamp Cooler
A DIY swamp cooler is significantly cheaper to build than buying an AC unit, uses far less electricity, relies on water instead of refrigerants for a smaller environmental footprint, and -- depending on size -- can be moved to cool different areas as needed.
With a bit of assembly and the right materials, a DIY swamp cooler offers real relief from the heat without the high cost of traditional air conditioning -- just keep up with maintenance and adjustments for the best performance.
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