Set up in a minute. Running in two.
Temper is a cold-air nebulising diffuser. No water, no heat, no special knowledge required. This page covers how to get started, what to expect, and the things most brands leave for the one-star reviews.
Three steps
01
Charge it
USB-C cable is in the box. Plug in for two hours before first use. The LED on the top panel shows charging status — solid when full. You can also run it while plugged in.
02
Twist on a bottle
Unscrew the cap from any thin essential oil bottle and twist it directly into the top of the diffuser. No measuring, no funnel, no separate reservoir to fill. The 20 ml glass bottle that comes with the starter pack fits perfectly.
03
Set your timer
Press the timer button to choose 1, 2 or 3 hours. Press the mode button to switch between continuous and intermittent spray. That is it. The machine shuts itself off at the end of the timer.
What cold-air nebulisation actually means
Most diffusers work by mixing oil into water and vibrating the mixture into a mist. The oil is diluted before it reaches the air, which is why the scent fades a few feet from the machine.
Temper uses cold-air nebulisation. A small pump pushes pressurised air past a glass tube. The pressure difference pulls oil up through the tube and shatters it into micro-particles — no water, no heat, no dilution. The scent that reaches the far wall is the same concentration as the oil in the bottle.
This is the same technology used in hotel lobbies and high-end commercial spaces. The difference is that those machines cost thousands and are sized for a ballroom. Temper does the same thing for a living room.
Why we recommend intermittent mode
Continuous diffusion is available, but most rooms reach saturation point faster than you might expect — after which running it harder does not make the scent stronger, just uses more oil. Intermittent mode cycles the pump on and off automatically. You get continuous scent perception at roughly half the oil consumption. A 10 ml bottle lasts two to three weeks at an hour a day on intermittent mode.
- Start on intermittent, adjust from there
- A 500 sq ft room saturates in about 10 minutes
- Ventilate between sessions — do not run it all day
- Coverage is 500–800 sq ft from a single unit
- Place it at table or shelf height, not on the floor
What you actually want to know
How loud is it?
The pump runs at about 38 dB — similar to a quiet refrigerator from six feet away. It is audible in a silent room. Light sleepers should run it for an hour before bed rather than through the night. In a living room with background noise you will not notice it.
How much oil does it use?
On intermittent mode, a 10 ml bottle lasts two to three weeks at an hour a day. On continuous mode, roughly half that. Heavier oils like sandalwood and vanilla use slightly more because they are thicker and the pump works a little harder.
How do I clean it?
Ten minutes, every four to six weeks. Add a few drops of isopropyl alcohol (70% or higher) to the bottle, run the machine for five minutes, then wipe the nozzle with a cotton bud. If you use heavier oils regularly, do this every two to three weeks instead.
Can I use any oil?
Any thin essential oil works. The bottle needs to be a standard 10–30 ml size with a neck that fits the head — most essential oil bottles do. Avoid carrier oils (coconut, jojoba, almond) and oil blends that contain water or alcohol, as these can clog the nozzle.
What to expect the first time you run it
The first thing most people notice is that the scent is stronger than they expected. Start with intermittent mode and a lighter oil — lavender, mint or one of the citruses — and let the room settle for ten minutes before adjusting. You can always run it less. The second thing people notice is the sound — 38 dB is there if you listen for it. In a quiet bedroom at night it is audible; in a living room it disappears.
What works well, and what to watch
All twelve oils in the Temper starter pack work in the diffuser. A few are heavier bodied and need slightly more maintenance. Here is what to expect from each family.
Floral — works well
Rose, Sakura, Freesia, Jasmine. Light to medium viscosity. Rose and jasmine are slightly thicker — clean every three to four weeks with regular use.
Citrus — works well
Orange and Lemon. Thin and fast-diffusing. The easiest oils in the set to maintain. Clean every six weeks.
Herbal and fresh — works well
Lavender, Mint Leaf, White Tea. All thin and clean-diffusing. Lavender is the most popular oil for bedrooms. Mint Leaf is better suited to daytime — it is too stimulating for most people before sleep.
Woody and warm — clean more often
Sandalwood, Vanilla, Osmanthus. These are the heaviest oils in the set. They diffuse beautifully but leave more residue in the nozzle. Clean every two to three weeks if you use them regularly.
Cleaning — the full version
The nozzle is the only part that needs regular attention. Oil residue builds up inside the glass tube over time and eventually restricts the airflow. Ten minutes every four to six weeks prevents this entirely.
Read this before you diffuse around animals
Essential oils are not universally safe around animals, and a nebulising diffuser disperses undiluted oil — which means higher airborne concentration than an ultrasonic. This matters more for certain species than others.
Generally lower risk than cats. Avoid diffusing tea tree, clove and cinnamon. Always give your dog a way to leave the room. Watch for signs of respiratory irritation — coughing, wheezing, lethargy.
Higher risk. Cats cannot metabolise many compounds that humans process easily. Avoid citrus, mint, tea tree, clove, cinnamon and most spice oils. If you have cats, consult your vet before diffusing any oil in an enclosed space.
Do not diffuse around birds. Their respiratory systems are extremely sensitive to airborne particles of any kind. This is not a precaution — it is a firm recommendation.
Ready to try it.
30 days at home. If it does not earn its shelf space, we cover the return.