A haze machine fills a room with a thin, even mist you barely notice until a light beam cuts through it. A fog machine fires thick, white clouds you are meant to see, and they clear fairly quickly. Pick haze when you want to show off moving heads, lasers and beam effects all night. Pick fog when you want a visible effect on cue, such as a stage entrance, a haunted house or a cloud on the dance floor.
This guide covers how fog machines, haze machines (hazers), fazers and low-lying fog machines differ, and which one fits a wedding, club, church, theater or Halloween event. Every spec below is the manufacturer's published spec for a machine we carry.
Haze vs fog: the short answer
| Haze machine (hazer) | Fog machine | |
|---|---|---|
| What you see | A fine, even mist. On its own it is nearly invisible. Light beams become visible. | Dense white clouds or bursts. The fog itself is the effect. |
| How long it stays | Hangs in the air and spreads evenly through the room | Thick at first, then thins and clears fairly quickly |
| How it runs | Continuously, at a low, steady output | In bursts, on a button, timer or DMX cue |
| Fluid use | Very low: 0.7 to 10 ml per minute on the hazers below | Much higher: 60 ml per minute on the Antari Z-1000 III |
| Best for | Lighting shows, beams, lasers, concerts, clubs, theater, video | Entrances, Halloween, haunted houses, dramatic reveals |
| Typical fluid | Haze fluid, either water-based (glycol) or oil-based | Water-based fog fluid (glycol) |
What is the difference between a fog machine and a haze machine?
Both machines turn fluid into a visible atmosphere. The difference is the particle and the delivery. A fog machine pushes fog fluid through a heated block and fires out a dense plume of tiny droplets. A hazer makes much finer particles, spreads them evenly over a large area, and runs steadily for long periods. You end up with an even layer in the air rather than a cloud.
That is why a hazer looks like it is barely doing anything until the lights come on. The haze is there so that beams from moving heads, lasers and pin spots have something to reflect off. Fog is the look itself.
Fog vs haze machines, spec for spec
Real numbers make the difference obvious. The machines below are a cross-section of what we carry, with each manufacturer's published figures. A dash means the manufacturer does not publish that figure.
| Machine | Type | Output | Fluid use | Warm-up | Tank | Weight |
|---|---|---|---|---|---|---|
| Eliminator Lighting VF1100 EP | Fog, 850 W | 9,000 cu ft/min | — | About 2 min | 0.26 gal (1 L) | 6.75 lb |
| Antari W-508 | Fog, 800 W | — | 13 ml/min | About 2 min | 0.21 gal (0.8 L) | 8.38 lb |
| Antari Z-1000 III | Fog, 1000 W | — | 60 ml/min | About 6 min | 0.45 gal (1.7 L) | 17.4 lb |
| ADJ Entour Faze | Fazer, water-based | 1,000 cu ft/min | 10 ml/min | 40 sec | 0.8 gal (3 L) | 10 lb |
| Chauvet DJ Hurricane Haze 2DX | Haze, water-based | 1,200 cu ft/min | 8 ml/min | 3 min | 0.5 gal (2 L) | 18.2 lb |
| Blizzard AtmosFEAR Tour HZ | Haze, water-based, 1000 W | Up to 8,000 cu ft/min | — | About 6 min | — | 29.8 lb |
| Antari HazeGen Max | Haze, oil-based | — | 0.7 ml/min | None (air compressor) | 0.66 gal (2.5 L) | 26.46 lb |
Two things stand out. Fog machines are lighter and output far more per minute, because they are built for bursts. Hazers sip fluid. The Hurricane Haze 2DX uses 8 ml a minute against the Z-1000 III's 60 ml, which is why a hazer can run through a whole event on one tank.
What is a fazer?
A fazer sits between the two. It is a fog-style machine with a fan that spreads its output into a haze-like layer. It uses water-based fluid, warms up fast and costs less to run than an oil hazer. It gives a slightly heavier atmosphere than a true hazer. The ADJ Entour Faze is a typical example: ready in 40 seconds, 10 ml per minute, and its output is a thin mist rather than a large plume of smoke. Mobile DJs who want beams without a pro hazer's weight often start here.
Water-based or oil-based haze?
"Water-based" haze fluid is a blend of water and glycol, and most DJ and club hazers use it. It suits most venues and is the easy, widely available choice. Oil-based hazers use a highly refined oil and very little of it. The Antari HazeGen Max uses 0.7 ml per minute and needs no warm-up. Theaters, touring productions and video shoots pick oil when they want a very fine, consistent haze. Whichever you choose, run only the fluid the manufacturer lists for that machine (see below).
Which should I get: fog or haze?
For a wedding or banquet hall?
Usually low-lying fog for the first dance, and haze only if the venue allows it. Low fog stays on the floor and gives the "dancing on a cloud" look. Many banquet halls will not allow an atmosphere that hangs in the air, so ask first. See low-lying fog machines below.
For a mobile DJ light show?
Haze, or a fazer. If you have moving heads, beam bars or lasers, a hazer is what makes them look like they do in the videos. Without it, most beam effects show up only as dots on the wall.
For a club, bar or church that runs lights every week?
A hazer. It runs continuously at low output on a timer or DMX, uses little fluid, and quieter models suit services and speech. The Hurricane Haze 2DX is built with quiet fans for exactly that reason.
For Halloween, a haunted house or a stage entrance?
A fog machine. You want a thick cloud on cue, and a hazer cannot do that. A wireless remote, included with the Eliminator VF1100 EP and the Antari W-508, lets you trigger it from anywhere in the room.
For concerts and touring?
Usually both: a hazer running all show for the beams, and fog or vertical fog jets on cue for big moments. A road-ready hazer such as the Blizzard AtmosFEAR Tour HZ comes in its own ATA-style flight case with 3- and 5-pin DMX.
What about low-lying fog?
Low-lying fog is cooled so it stays heavier than the air around it and hugs the floor. As it warms, it rises and disappears. There are four common ways to make it:
- Dry ice machines heat water and drop dry ice into it. They make a thick white floor fog, but you have to buy dry ice for every event, and output is harder to control.
- Chilled fog machines pass ordinary fog through a cooling chamber, often packed with ice, so it stays low.
- Ultrasonic low fog machines such as the Antari DNG-50 need no dry ice or CO2. Antari lists 2.5 hours of operation at full output from a 0.63 gallon (2.4 L) tank, with about 2 minutes of warm-up.
- Cryogenic systems (liquid nitrogen or CO2) are for large productions. They add gas to the room, so levels have to be monitored.
Browse every option in low-lying fog machines.
Will fog or haze set off smoke detectors?
They can, and both can. Dense fog is the more likely trigger, especially for photoelectric (optical) detectors, but haze builds up over a long event and can set them off too. Never cover or disable a detector yourself. Ask the venue before the event. Many venues require a fire watch, a detector bypass handled by their alarm company, or approval from the local fire marshal, and some simply do not allow haze. Those decisions belong to the venue, not the performer.
Is stage fog safe to breathe?
Commercial fog and haze fluids from established makers are formulated for use around audiences. The industry standard ANSI E1.5 sets exposure limits for the glycols in theatrical fog. The practical rules are simple: use the least fog that gets the look, keep output away from faces, ventilate the room, and use only the fluid listed for your machine. Cryogenic and dry ice effects lower oxygen near the floor, so never let anyone lie down in a thick layer of it.
Can I use fog fluid in a hazer?
No. Use the fluid the manufacturer lists. Hazers are tuned to their fluid, and the wrong one can clog the machine or spit droplets. The machines in this guide list:
- Chauvet DJ Hurricane Haze 2DX: Chauvet HFG
- ADJ Entour Faze: ADJ F4L ECO (ADJ's recommendation)
- Antari W-508 and Z-1000 III: Antari FLG Heavy or FLR Light fog fluid
- Antari DNG-50: Antari FLJ or FLL low fog fluid
Shop haze fluid and fog fluid.
Fog and haze venue checklist
Run through this before you book atmospherics into any event:
- Does the venue allow haze, fog or low fog? Get it in writing.
- What kind of smoke detectors does the room have, and who handles a bypass or fire watch?
- Is there an HVAC return or open door that will pull the haze away, or blow low fog around?
- Do you have the fluid's safety data sheet on hand if the venue asks?
- Is the machine placed away from faces, food and walkways, with its cord taped down?
- Is there a DMX line or remote so you can stop output instantly?
- For low fog: is the floor surface going to get slippery or damp?
The bottom line
Get a hazer if your lights are the show. Get a fog machine if the fog is the show. Get a low-lying fog machine for first dances and floor-level effects. Many working DJs and venues end up owning a hazer and a fog machine and running them together. Compare every model in haze machines and fog machines, or call our team and tell us the room size and event, and we will point you to the right machine.