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Diffuser Comparison Charts


To learn more about the different types of diffusers, please click here.

Comparison Chart 1

Diffuser Style Air Pump Power1 Oil Capacity Noise Level2
Nebulizing Diffusers
Economy
EconomyDiffuser
2.13 PSI 1-5 ml Moderate
Well & Jet
9371
4.0 PSI .5-15 ml Moderate
Advanced
9375
6.5 PSI

Up to 15 ml Moderate

Ultrasonic Misting Diffusers

Whisper Misting Diffuser
9377
N/A 1 - 10+ drops Nearly Silent

Evaporative Diffusers

FanFuser
9315
N/A 2 drops-5 ml Low
Battery Operated
9310
N/A 10 drops-2 ml Low
Personal Aromatherapy
9396
N/A 5-15 drops Low

Heat Diffusers

Car Diffuser
9394
N/A 5/8 dram (2.3 ml) None
Plug-in Diffuser
9395
N/A 1 oz. (30 ml) None

1. Air pump power is shown as average PSI (Pounds of presssure per Square Inch). Actual pump output may vary by .4 PSI.
2. Noise level is given as average decibel (dB) level recorded at a distance of 18 inches from the diffuser in a quiet room. Diffusers without a number rating were too quiet to be detected by the sound-level meter. By comparison, a small room air-conditioner runs at about 71 dB.

*N/A means that that feature is Not Applicable to that style of diffuser.

Comparison Chart 2

Diffuser Style Air Saturation1 Directional Adjustment Power-Level Adjustment

Nebulizing Diffusers

Economy
9320
High

Well & Jet
Well & Jet Diffuser
High

Yes Yes
Advanced
9375
Very High

Yes Yes

Ultrasonic Misting Diffusers

Whisper Misting Diffuser
9377
High Yes 10 Settings

Evaporative Diffusers

FanFuser
9315
Very High

2 settings
Battery Operated
9310
Moderate

Personal Aromatherapy
9396
Low

Heat Diffusers

Car Diffuser
9390
Low

Plug-in Diffuser
9395
Low

1. The air saturation rating measures how much oil a diffuser can put into the air in a set amount of time for therapeutic purposes. Typically, the higher the air saturation rating, the larger the area the diffuser will cover (the actual square footage a diffuser can cover will vary depending on airflow, height of ceiling, climate, and the oil being diffused). Diffusers with a "Very High" rating have a maximum oil output ability of between .75 and 1.3 ml per 15 minutes of use. (*Note: all diffusers we carry with a "Very High" rating have a power-level adjustment so you can control how much oil is actually diffused. The maximum output is for the diffusers on their highest settings.). Diffusers with a "High" rating have a maximum oil output ability of between .4 and .75 ml per 15 minutes of use. Diffusers with a "Moderate" rating have a maximum oil output ability of between .1 and .4 ml per 15 minutes of use. Diffusers with a "Low" rating have a maximum oil output ability of less than .1 ml per 15 minutes of use. These levels are for lemon oil diffused in a warm, dry climate with moderate air flow. Actual oil output ability may vary depending on the type of oil being diffused, the climate, airflow, and diffuser variability.