Best oil diffuser for large room 300pxUsing essential oils for their health benefits is one of the oldest and still most trusted methods of easing anxious minds and soothing ailing bodies. While essential oils can be consumed or applied to the skin, if you want to access the full potential of their healing properties it’s best to use a diffuser. It’s also a great way to purify and cleanse air, adding a fresh and inviting aroma to your home and workplace.

If you have a large room or office, some smaller diffusers simply won’t emit enough mist to effectively fill the space. I’ve researched the best oil diffuser for large room coverage and compiled a list of my top five picks.

1. URPOWER 500ml Diffuser and Ultrasonic Air Humidifier

URPower 500ml Aromatherapy Essential Oil Diffuser 300pxThis is both a large room essential oil diffuser and a humidifier with the added benefit of an alternating colour night light. The water capacity is a large 500ml allowing up to 10 hours continuous use.  It automatically turns off after choosing from the three time period options, or once the water has run out.

Unlike many other diffusers, the URPOWER interior pops out for easy cleaning and its clearly marked water lines means you’ll avoid an overfill spill. Despite its large capacity and power, the diffuser is amazingly quiet and a great essential oil diffuser for a large room.

2.  Housmile 600ml Essential Oil Diffuser

Housesmile 3rd Version 600ml Diffuser 300pxThe Housmile not only boasts an impressive water capacity and the ability to purify the air for up to 15 hours, but is one of the most stylish of the large room essential oil diffuser products on the market.

The Housmile adds a subtle ambience with its built-in, warm glow light and its wood-grain exterior. It’s also one of the quietest diffusers which makes it the perfect ‘seen but not heard’ addition to the home. Its stylishness shouldn’t be mistaken for a lack of substance—the Housmile emits an impressive amount of mist, sure to put at ease any lingering coughs, allergies or tension.

3.  Samyo 1.5L Large Capacity Automatic Diffuser

Samyo 1500ml Large Capacity Automatic Diffuser 300pxPut simply, for those of you with open plan homes or offices, this is the best essential oil diffuser for large room needs.

The Samyo’s slim-line, ornate carved design built out of durable anti-corrosion material is a stylish and reliable addition to your décor. It has a huge 1.5L capacity which in combination with its adjustable mist settings means you can rest assured it will keep working all night. It will also turn off in the unlikely event it runs out of water!

Fantastic for the most arid environments, the Samyo will keep your skin moisturised, your chest clear, and your mind calm.

4.  URPOWER 300ml Whisper-Quiet Essential Oil Diffuser

URPower 300ml Essential Oil Diffuser Wood Grain 300pxWhile this URPOWER model packs a lower capacity than its same brand counterpart on this list, it makes up for it by still producing an impressive amount of mist over 10 hours. It also looks like a feature décor item that you’ll proudly put on display.

Its wood-grain exterior adds a fashionable quality to what is a very easy to use, and clean, essential oil diffuser. Seven soothing colours will calm even the tensest of nerves at the end of the day, while your favourite soothing essential oil aromas can be either quickly and densely diffused or left to subtly waft through your home or office.

5.  Cool Mist Air Humidifier by Vafee

Vafee Cool Mist Air Humdifier 300pxLast but definitely not least is the Vafee Cool Mist Air Humidifier—the best oil diffuser for a large room for those who want to keep it simple yet reliable.

Using its sturdy 500ml capacity to diffuse essential oils will cleanse the air and invigorate the senses for up to an impressive 15 hours. Choose one of seven colours to suit your mood or décor, or simply let it roll seamlessly through the rainbow as you drift off to sleep.

Emitting an impressive amount of mist, the Vafee is easy to refill and clean and its sturdy build is spill proof around children and pets.


The best essential oil diffuser for a large room is one that is easy to clean and refill, looks like it’s part of your decor, has sufficient light and time settings to suit your needs, and of course—efficiently diffuses your favourite essential oils and purifies the air. These larger capacity diffusers produce more mist and a wider reach for the diffusion; perfect for large rooms and open plan spaces.

Each of the diffusers I’ve listed is perfect for bringing the valuable therapeutic qualities of essential oils into your home or office. They’ll help you to wake up, relax, recuperate, repel the cold season, and will make anyone who enters the room feel right at home.

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