How many watts does a fog machine use? Find out by entering your wattage, how many hours a day you run it and your electricity rate, then hit Calculate. You get your monthly cost and the kWh it uses. Also see rice cooker electricity consumption.
If you are about to plug one in, you need to know how many watts does a fog machine use, because the answer decides which outlet, circuit and cable you can safely run it from. Most units sit between 400 and 1,500 watts, and the big stage models go well beyond that, so a quick check of the rating label saves you from a tripped breaker mid-party.
A consumer fog machine is usually rated from 400 W to 1,500 W, while professional stage units commonly climb to 3,000 W. That rating describes the electric heater inside the unit, not the amount of fog it makes. A bigger number means the heater recovers faster, so the machine can run longer bursts before it has to pause.
Think of the label as the maximum power the machine can pull from the wall while it is working. It is the figure you use for every other calculation on this page: amps, circuit load, running cost and generator size.
Compact units built for living rooms, garages and a Halloween porch typically land between 400 W and 900 W. They warm up slowly, produce a burst, and then stop to recover, so you get shorter puffs rather than a continuous wall of fog.
A unit made for a stage, a club or a touring rig usually draws 1,200 W to 3,000 W. The larger heater keeps up with long, near-continuous output, which is why a DJ or a theater crew pays for the extra capacity.
Not every device that makes a cloud works the same way, and the type matters as much as the headline number. The table below gives typical ranges you will see on spec sheets. Related: hand mixer power consumption.
| Machine type | Typical wattage | Typical heat-up time | How it uses power |
|---|---|---|---|
| Compact party fogger | 400–900 W | 3–6 minutes | Heater cycles on and off, slow recovery |
| Mid-range fogger | 1,000–1,500 W | 4–8 minutes | Longer bursts, shorter pauses |
| Stage fogger | 1,500–3,000 W | 6–12 minutes | Large heater, near-continuous output |
| Low-lying fog machine | 1,200–3,000 W | 8–12 minutes | Heater plus a chiller for ground fog |
| Water-based hazer | 400–1,500 W | 3–10 minutes | Heated, runs steadily at lower output |
| Oil-based hazer | 100–300 W | Under a minute | Pump and compressor, no heater |
A fogger makes dense clouds in short bursts, while a hazer releases a thin, steady mist that makes light beams visible. Because a hazer works gently and continuously, it usually draws less, although it may stay on for the whole night.
An oil-based haze machine atomizes its liquid with a compressor and a pump, so there is no heat to supply and the draw is a fraction of a fogger's. A heated haze machine, on the other hand, is basically a fogger with a fan added to thin the cloud, and its wattage looks much more like a fogger's.
A low-lying fog machine chills its vapor with ice or dry ice so the cloud hugs the floor. The chiller adds hardware, and many of these units carry big heaters, so budget for the upper end of the range.
Inside every unit is a heat exchanger, a metal block wrapped around a heating element. A small pump pushes liquid from the tank through that hot block, and the liquid flashes into vapor (spelled vapour in British English) at the nozzle. When the hot cloud meets cooler air it condenses into visible fog.
Turning liquid into vapor takes a lot of energy, and every pass of liquid cools the block. A thermostat switches the heater on until the block is hot, which is when the ready light comes on. That first warm-up is the heat-up time, and it is the longest stretch of full draw. After each blast the heater must reheat the block, and a higher wattage shortens that pause.
Higher wattage generally gives you more fog output, but it does not guarantee thicker fog. Makers quote output in cubic feet per minute (cfm), and because there is no standard for fog density, the same unit can produce a little dense fog or a lot of thin fog. Treat the number of cubic feet on a box as a rough comparison, not a promise.
The wall does not care about watts; the breaker cares about current. To see how much of a circuit a fog machine takes, divide the rating by the voltage:
$$\text{Amps} = \frac{\text{Watts}}{\text{Volts}}$$
A standard US circuit runs at 120 V and is protected by a 15 A breaker, which is 1,800 W in total. For anything that stays on for hours, keep the load to about 80 percent of that, or 1,440 W.
| Fog machine wattage | Current at 120 V | Share of a 15 A circuit |
|---|---|---|
| 400 W | 3.3 A | 22% |
| 700 W | 5.8 A | 39% |
| 1,000 W | 8.3 A | 56% |
| 1,350 W | 11.3 A | 75% |
| 1,500 W | 12.5 A | 83% |
| 1,800 W | 15.0 A | 100% |
A unit rated 3,000 W would pull 25 A at 120 V, which is more than any ordinary wall socket can supply. Machines in that class need a higher-voltage or dedicated feed, so check the plug type before you buy.
A fog machine pulls a lot of current but not much energy over a whole night, because the heater switches off whenever the block is hot. To estimate electricity use, multiply the rating by the hours and by the share of time the heater is actually on:
$$\text{kWh} = \frac{\text{Watts}}{1000} \times \text{Hours} \times \text{Duty cycle}$$
Multiply the result by your local rate for the running cost. At 17 cents per kWh, a 1,000 W unit that heats flat out for an hour uses 1 kWh and costs about 17 cents. The real risk is a tripped breaker, not the electric bill.
Say you are setting up a fog machine rated 1,350 W for a four-hour dance at a community hall with standard 120 V outlets, and you want to know whether it can share a circuit with anything.
| Circuit | Equipment | Load | Result |
|---|---|---|---|
| A | 1,350 W fogger only | 11.3 A | Fine, keep it alone |
| B | Speakers and mixer (900 W) | 7.5 A | Fine |
| C | Six LED PARs (360 W) | 3.0 A | Fine |
| Avoid | Fogger plus speakers (2,250 W) | 18.8 A | Trips the 15 A breaker |
The lesson is that the fogger gets its own circuit. Putting it beside the sound system turns a 7.5 A load into an 18.8 A one the moment the heater kicks in.
A stronger heater turns fluid into vapor faster, so wattage also sets how quickly you empty the tank. A 1,350 W unit burns through fog fluid noticeably faster than a 400 W one, so plan your refills for a long event. Stores often call the same product fog juice.
Most heated machines use a water-based mixture of water with glycol or glycerin, which is generally non-toxic when used as directed and dissolves quickly. An oil-based haze fluid hangs in the air longer but is made for hazers, so never swap fluids between machine types. The split also tracks wattage: the water-based mix needs the heated 400 W to 1,500 W units, while oil-based haze fluid runs in hazers that draw only 100 W to 300 W.
A timer or remote lets you fire short bursts instead of holding a button down, so the heater is not running flat out. In larger rigs, DMX control does the same thing from the lighting desk, which keeps the load predictable.
Once you know the numbers, matching a rating to a job gets easy. Pick the lowest wattage that still delivers the look you want, because a bigger heater only adds load, warm-up wait and fluid use. A smoke machine, as many shoppers call it, does not actually burn anything, so there is no smoke to worry about, only vapor and hot parts.
For a living room or a Halloween display, a unit in the 400 W to 700 W range is plenty. It plugs into any household socket, leaves room on the same circuit for a few lights, and the fog clears quickly in a small room. If you want the creepy ground cloud, step up to a chilled model and keep a second socket on a different circuit free for it.
Mid-range units from roughly 1,000 W to 1,500 W suit a small club or a travelling rig. They recover quickly enough to keep fog going through a whole song, and a 12 A load still fits on one properly protected circuit. A 1,350 W unit draws about 11 A, so keep every other piece of gear off that circuit.
Big rooms and productions need the most capacity, and that is where the 3,000 W class earns its place. The larger heat exchanger keeps output steady, and the machine is usually triggered by cue rather than by hand. At 120 V a 3,000 W unit draws 25 A, so it needs its own higher-capacity feed and the venue's electrician should hear about it early.
An oversized machine in a small room fills the space with fog you cannot see through, which is a safety problem as well as a waste. It also forces you to find a bigger circuit and a larger generator. Start small, test the effect in the actual room, and only move up if the fog disappears too fast. A rule that works well is to test the machine for a full cycle of fog, heater pause and reheat before the doors open, so you know how long the pauses really are.
Look for the wattage and voltage printed beside the power inlet, then check whether the manual lists a separate figure for the heater. Some manufacturers also list standby draw, which is small, and a peak figure, which is the number to use when you plan the circuit. Treat the rated wattage as the draw for the whole time the machine is switched on, because the heater can run almost constantly during heavy use.
Good power planning matters more than the wattage itself. Whether it is a party in a garage or an event in a ballroom, a few habits keep the lighting and the music on and the room safe.
A reel that is rated for a high load when unwound may be rated for far less when coiled. Pick a cable thick enough for the current and never daisy-chain adapters.
For an outdoor generator, add up every load and leave at least 25 percent of headroom. When the heater switches on, a small generator can dip in voltage and you will hear it in the speakers.
Fog can set off a smoke alarm, so ask the venue to handle detector isolation and never cover one yourself. For safety, remember that a heater drawing 1,350 W gets hot, so keep it clear of anything flammable. Regular cleaning with the maker's cleaner keeps the heater and pump drawing their rated power instead of working harder.
Tie the effect you want to a power level. A small 400 W water-based fogger suits a Halloween yard, a 300 W hazer builds subtle atmosphere for a band while barely touching the circuit, and a low-lying unit that gives a theater scene its ground cloud may need 1,200 W or more.