Diffusers 101

Many of you have asked me “Where did you get your diffuser?” and “How do you go about choosing a diffuser?”  So here at Oilology Essentials we have created this section called diffuser 101. In this section we carefully walk through all the ins and outs of selecting the perfect diffuser. Everything below is a result of our research, testing and experiences using diffusers.   For more in-depth info on diffusers please visit our review sections where we review the best of the best in the diffuser market.


The Benefits of a Diffuser


Diffusing essential oils is one of the best ways to receive their therapeutic benefits.  Diffusing also aids in the release of the essential oils over a wide area where many people can benefit from it.  Below are just a few of the benefits you can expect to experience while diffusing oils:

  • Cleanse and purify the air of viruses, bacteria, pathogens and mold

  • Impact focus & concentration

  • Reduction in stress

  • Boosts the immune system

  • Impacts the mood

  • Creates negative ions (an overall sense of peace and well-being)


Top Criteria for a Good & Beneficial Diffuser


  • Heat-Free diffusion – heat can change drastically change the chemical make-up of the oil. This in turn will cause the oil to lose its benefits while being diffused.

  • Effective and Efficient in larger rooms – a diffuser that can cover a large area!

  • Economical – both in saving those precious oils and money at the electric meter!

  • Easy to Clean – not having to clean after every use is a must.

  • Long Lasting – Will it stand up to the day to day abuse I put it through.

Essential oil diffusers are specifically designed to break the essential oil into small particles and disperse those particles into the air.  One of the biggest  problem we see with people and selecting diffusers is confusing a humidifier with a diffuser. DO NOT CONFUSE A HUMIDIFIER WITH AN ESSENTIAL OIL DIFFUSER!  If a device isn’t designed to use with essential oils, I would strongly advise against using it for diffusing oils.  For one thing, it could possibly break down the plastics of the machine. In turn you are loosing the benefits of the essential oils.


There are four types of essential oil diffusers, two which are the only we would recommend:  ultrasonic, nebulizing ,evaporative and heat activated.


  • Ultrasonic diffusers ·An ultrasonic humidifier uses a metal diaphragm vibrating at an ultrasonic frequency to create water droplets. An ultrasonic humidifier is usually quiet and produces a cool fog. This type create a very fine mist that sends out tiny oil particles into the air.  Generally you will be adding water along with your favorite oils into the reservoir their the water and oils are distributed into the air.  Using this type is particularly good in the drier winter months because moisture is added to the air.   These are also very economical to run based on the tiny amount of oil you are adding the diffuser.  Most have timers and ambient lights (mood lighting/nigh light) that add to their value.



  • Nebulizing diffusers · A jet of air blowing across a small tube creates a vacuum that pulls a liquid at the bottom of the tube to the top of the tube. The air flow blowing across the surface of the oil at the top of the tube blows the oil away in a fine spray or mist. With a constant air supply source, this type of diffusion can quickly put a large amount of oil into the air.  These do not need added water.  This type of diffuser diffuses the oil straight from the bottle, which is broken up into super tiny molecules.  nebulizing diffuser disperses the entire oil into the air and breaks it up into much smaller particles than other diffusers, this is type of diffuser has more therapeutic qualities. Though it is not as economical as the ultrasonic diffuser as it can run through bottles pretty quickly.

  • Evaporative Diffuser · The Evaporative or wick system uses a paper, cloth or foam wick or sheet to draw water out of the reservoir. A fan blowing over the wick lets the air absorb moisture. The higher the relative humidity, the harder it is to evaporate water from the filter, which is why this type of humidifier is self-regulating These diffuser are very basic in their operation compared with the ultrasonic diffuser. Essentially a fan blows air through a filter where the oil sits and vaporizes the oil on the filter pad. One of the problems associated with this type of diffuser is that the lighter oils diffuse  quicker than the heavier oils.  Making these types great for the car!




  • Heat Activated Diffuser · Often referred to as a “vaporizer,” a heat activated diffuser boils water and releases the warm steam into the room. This is the simplest, and therefore the least expensive, technology for adding moisture to the air.This method uses a heat source to disperse the essential oil. Any diffuser that operates in this manner will alter the chemistry of the essential oil. WE DO NOT RECOMMEND USING THESE.  These are only good for making a room smell good.



Why is the Ultrasonic Diffuser the Best?


Here is why we recommend the ultrasonic diffuser for all your essential oil diffusing needs.

  • Easy to use and clean

  • Breaks down all essential 0il (no matter the viscosity)

  • Higher oil capacity

  • Low noise level ( fan noise is minimal)

  • Can really saturate the air

  • Covers large areas

  • May have a timer option

  • May have an added night light


Here at Oilology Essentials we have tested and reviewed several models of diffuser which you can pick up for a very affordable price.  These diffusers are what we would say out preform the best of the best. I personally own 4 diffusers and I have spent big money on some.  However I have also found several which we will list on our site that can compete with the big boys any day.  Please look through our recommendations and feel free to write us with any questions or comments.


The Oilology Team