Outdoor mist systems don't always require a pump. If you are using a garden hose to supply your water, the water pressure from the hose will be strong enough to push the water through the system without a pump. However, if you are using a tankless water heater or if you have low water pressure, you will need to use a pump.

If you're installing a misting system for your garden, you'll need a pump. Most mister systems are designed for outdoor use and rely on either gravity or water pressure to get the water up to the nozzles. You can buy pumps specifically designed for misting systems, or you can use a regular pond pump. Just make sure the pump is rated for outdoor use and can handle the water pressure needed to run your mister system.