Editing Humidifier (section)

=== Spray mist ===
Spray mist type uses a pipe, usually a small plastic one, to bring water directly to an electrically controlled valve (atomizer-this forces the water through a tiny orifice causing it to break up into tiny particles) in the humidifier. Water mist is sprayed directly into the supply air, and the mist is carried into the premises by the air flow.
:Advantages include:
:* Simpler than bypass types to install, requiring a single cut hole for installation, no additional ducting.
:* Uses little electricity.
:* Small, compact unit which fits where other types cannot. (Approximately {{convert|6|in|cm}} square.)
:* Because it does not require bypass ducting it does not undermine the pressure separation (and therefore, blower efficiency) of the return and supply ducts.
:* Does not require use of moisture pads (on-going expense).
:* Highly efficient usage of water.  Does not generate waste water, and does not require separate connection to a drain.
:* Requires little maintenance.  Periodic cleaning of nozzle may be required in hard water environments.
:* Lack of a pan of potentially stagnant water to serve as a breeding ground for mold as with a drum-style humidifier.
:Disadvantages include:
:* Spray nozzle can become clogged in hard water situations, necessitating the use of water filter, periodic cleaning of nozzle, or nozzle replacement.
:* Disperses any minerals in the water into the airstream.