| Ultrasonic Water-Mist Fountain | Piezoelectric transducers vibrate water at ultrasonic frequency and break it into fine droplets. | Cool, white mist that rises gently from the water surface and can be illuminated. | Clean water; distilled or demineralized water can reduce mineral deposits. | Usually several hours per fill, depending on reservoir size and mist output. | Indoor tabletop fountains, exhibitions, home décor, spas, and quiet installations. | Quiet operation, low heat, low energy consumption, and no fog fluid required. | Mist is sensitive to airflow; mineral buildup and stagnant water require regular cleaning. |
| Water-Based Heated Fog Fountain | A heater vaporizes a water-based fog fluid, while a fan distributes the generated aerosol. | Dense, theatrical fog that can be directed around a fountain or stage feature. | Commercial water-based fog fluid formulated for compatible machines. | Typically continuous operation while fluid and power are available, subject to duty-cycle limits. | Events, performances, themed displays, photo areas, and large decorative installations. | High output, adjustable timing, and broad control over fog density and direction. | Needs approved fluid, electrical power, ventilation, and periodic cleaning of the fluid path. |
| Low-Lying Fog Fountain | Fog is cooled, commonly with an integrated cooling system or another approved method, so it remains close to the floor. | A cloud-like, ground-hugging layer that flows around the base of a fountain. | Water-based fog fluid; some systems use chilled water or another dedicated cooling method. | Commonly operates for the duration of a performance or programmed display. | Weddings, stage effects, themed attractions, product presentations, and entrance displays. | Creates a dramatic floor-level effect with less upward spread than ordinary fog. | Performance depends on room temperature, ventilation, humidity, and the cooling system. |
| Dry-Ice Fog Fountain | Dry ice is placed in warm water, causing carbon dioxide to sublimate and produce a dense fog. | Very dense, cool fog that stays low and spills over the edge of a suitable container. | Food-grade dry ice and warm water; dry ice is consumed during operation. | Usually minutes rather than hours per batch, depending on dry-ice quantity and water temperature. | Short demonstrations, stage moments, photography, and special-event effects. | Produces exceptionally dense low fog without a heated fogger or fog-fluid residue. | Requires careful handling, fresh dry ice, suitable ventilation, and protection from direct skin contact. |
| CO₂ Fog-Jet Fountain Effect | Liquid carbon dioxide expands rapidly through a specialized nozzle, creating a short burst of visible condensation. | Fast, bright-looking white plumes or jets that rise and disperse quickly. | Liquid carbon dioxide supplied in a compatible pressurized cylinder system. | Short bursts controlled by a timer or control system rather than continuous fogging. | Concerts, outdoor events, product launches, and high-impact stage moments. | Instant visual impact, rapid dissipation, and no water-based fog fluid. | Requires trained operators, approved equipment, secure cylinders, and adequate ventilation. |
| Fan-Assisted Mist Fountain | A fan pushes water mist or fog through a decorative outlet to increase spread and movement. | Visible drifting mist with a wider, more directional pattern than a passive fountain. | Water for misting systems or compatible water-based fog fluid, depending on the design. | Several hours when supplied with adequate water or fluid and electrical power. | Outdoor patios, garden displays, retail features, and ventilated public spaces. | Improves mist distribution and allows the effect to cover a larger visible area. | Fan noise, water drift, wind sensitivity, and possible moisture around nearby surfaces. |