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The 5 Best Oil Diffusers (2023 Review)

Whether you’re having a rough day or looking for some relaxation, oil diffusers are a convenient way to experience aromatherapy. In this review, the This Old House Reviews Team researched the five best oil diffusers on Amazon to help you find the product that’s right for you and your home. The products included in this article are available at various home improvement stores, local home centers, and online retailers like Amazon.

Oil Diffuser Courtesy Amazon

Tea tree, orange, and black cherry are just a few of the scents that can revive any space with the help of an oil diffuser. These small products can fill a room with fragrance and provide relief after a stressful day. To help you select the oil diffuser that’s right for your needs, the This Old House Reviews Team researched the best oil diffusers on Amazon. Here are our top five recommendations.

Top 5 Oil Diffusers

Most Elegant Design: Earnest Living Essential Oil Diffuser

The carved ceramic body and wood base of this oil diffuser make it perfect for the home decor enthusiast. The diffuser has a 100-milliliter water reservoir, seven color settings, and four timer options. It’s also equipped with an auto shut-off function that automatically turns off the machine once the reservoir is empty.

Key Features

  • Seven color settings
  • Four timer settings
  • 100-milliliter water reservoir
  • Three-to-five-hour working time
  • 30-day money-back guarantee

What Customers Are Saying

Customers described the product as easy to use, giftable, and affordable. Those who were unsatisfied with their purchase said that the product’s automatic shut-off function kicked in long before the water reservoir was empty.

Most Medium Coverage: URPOWER Essential Oil Diffuser

This essential oil diffuser and air humidifier adds zen to any space. Its ultrasonic technology produces fine microparticles of fragrance using vibration instead of heat to maintain the integrity of the oil. The product also includes a large-capacity water reservoir that holds up to 300 milliliters of water to add fragrance to spaces up to 200 square feet in size for six to eight hours.

Key Features

  • Seven color settings
  • Four timer settings
  • 300-milliliter water reservoir
  • Six-to-eight-hour working time
  • 200 square feet of coverage

What Customers Are Saying

Customer reviews stated that the product was easy to use and clean. A few customers said that they bought the product months ago and that it was still working perfectly. Those who weren’t satisfied with the product said that it got noisier the more they used it.

Most Advanced Technology: ASAKUKI Smart Wi-Fi Essential Oil Diffuser

The ASAKUKI Smart Wi-Fi Essential Oil Diffuser uses Wi-Fi technology to connect to voice assistants, such as Amazon Alexa and Google Home, as well as smartphones. Customers can control the mist level, spray time, color setting, and more using their smart devices or its panel. This diffuser also runs at 35 decibels, allowing it to be used in a nursery, office, or other room that requires silence.

Key Features

  • Customizable settings using Wi-Fi connectivity
  • 500-milliliter water reservoir
  • 16-hour working time
  • 300 square feet of coverage

What Customers Are Saying

Customers loved this oil diffuser’s user-friendly technology, stating that it allowed them to fully customize how fragrance was released into their homes. Disappointed customers had issues getting it to connect to their smart devices.

Best Warranty: HOMNAS Essential Oil Diffuser

This product has a three-in-one design with diffuser, humidifier, and night light functions that cost less than most other diffusers on the market. The product also comes with a lifetime warranty to ensure longevity.

Key Features

  • Several color settings
  • Four timer settings
  • 100-milliliter water reservoir
  • 12-month money-back guarantee
  • Lifetime warranty

What Customers Are Saying

Customers raved about this product because of its decorative ceramic cover and ability to fill a large space, such as a living room, with fragrance. Dissatisfied customers stated that the machine broke after a short period of time.

Simplest Design: BBSKIN Mini-USB Essential Oil Diffuser

This mini diffuser can release fragrances in a hotel room, car, or other on-the-go location. The USB compatibility of this product makes it easy to connect to a laptop or other electronic device. Its one-touch lid also offers seven color-changing lights.

Key Features

  • Seven color settings
  • Four timer settings
  • 80-milliliter water reservoir
  • Four-to-six-hour working time

What Customers Are Saying

Satisfied customers stated that this product was easy to use with its one-touch lid and convenient to travel with its small size and USB power cord. Those who were unsatisfied with the product said that it was made from cheap plastic.

Buyer’s Guide

Before buying an oil diffuser, it’s important to consider how each product’s design and features impact its user experience. Here are five factors to keep in mind prior to making a purchase.


Oil diffusers can come with many features, including timers, customizable lights, and different mist strengths. Consider what features you need from an oil diffuser. For example, if you’re going to be using yours at night, opt for a product with light options so that it doubles as a night light.


Since diffusers are often a part of your home decor, consider their design. Some products are made with plastic, while others are made from more decorative ceramic or glass. Some products also have crafted details, such as wood bases or carved patterns.


Some oil diffusers provide widespread coverage, while others are meant for small rooms. If you’re purchasing a diffuser for a smaller room, such as a bathroom or home office, choose a model that has less coverage to avoid overwhelming the space with too much fragrance.


The runtime of an oil diffuser is dependent on how large its water reservoir is. Larger reservoirs can release mist for longer. If you want to leave your diffuser on for hours at a time, look for a larger model.


Some diffusers are whisper quiet, while others emit noises. When searching for the right diffuser for you, consider where you plan to keep it. For example, if you plan to place the diffuser in a nursery or office, opt for a model that guarantees a quiet operation.

Frequently Asked Questions

Should I use diluted or undiluted essential oils?

Use undiluted essential oils because the water in an oil diffuser acts as a diluent.

Can diffusers dampen surfaces or walls?

Oil diffusers aren’t supposed to dampen surfaces or walls with their mist. However, some cheap models leak water from their water reservoirs.

Do oil diffusers come with essential oils?

No. Most oil diffusers don’t come with essential oils. You will have to buy those separately.

Why Trust The This Old House Reviews Team

This Old House has empowered homeowners for more than four decades with top-notch home improvement content in the form of television programs, print media, and digital content on its website and social media platforms. The This Old House Reviews Team focuses on creating in-depth product and service review content to help inform your purchasing decision for just about any item or resource that you might need for your home. The This Old House Reviews Team has written over 1,000 reviews on products in the home space, from cordless drills to kitchen trash cans, lawn mowers, and dining room decorations.

We recommend products in each review using an intensive research process, spending hours combing through the best available models on Amazon. For a product to make our list of top picks, it must hold a solid sales record on Amazon, have consistently positive customer reviews, and offer unique features, among other factors. After narrowing down our list of recommendations, we conduct additional research and sometimes in-person testing to ensure that the products meet our standards. Once we conclude the research phase, we craft a well-rounded, user-friendly article that includes our recommended products and additional information to help homeowners like you make the right purchase.

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