Large room fragrance diffuser: PURRA G300, 180 m²
For a large room of 180 m², you need a fragrance diffuser sized for that volume, and across the whole PURRA range only one is: the PURRA G300, the 101 cm floor-standing column designed for 180 m². A large room fragrance diffuser is a device whose nebulization output is calculated to saturate an open volume, and not a single zone around it.
The key points to remember:
- The PURRA G300 covers 180 m², compared with 100 m² for the X300 and X300S models and 10 m² for the portable C30.
- A large volume is judged by ceiling height and openings as much as by square metres of floor area.
- In a lobby or under a high ceiling, the official instruction is to start at intensity II in the morning, then move to III if the volume is open or if the door opens constantly.
- The G300 is the only device in the range that stands on the floor: 101 cm tall, 200 mm in diameter, 2.8 kg, a 10,000 mAh battery and a 100 ml refill bottle.
Why a diffuser designed for 100 m² disappoints in a large volume
A device sized for 100 m² scents a closed 100 m² room correctly, not a 180 m² living space open onto a kitchen and a stairwell. The difference lies not in the quality of the mist but in the quantity of micro-droplets released per cycle, which disperses into a volume almost twice as large.
The coverage areas announced by manufacturers assume an ordinary ceiling height. That is how PURRA documents its portable model: 10 m², or 30 m³. As soon as the ceiling rises to four or five metres, or a mezzanine opens the living space onto the floor above, the actual volume doubles without a single square metre of floor changing.
Three factors make dilution worse in large spaces: doors that open often, glazed bays that create draughts, and mechanical ventilation that extracts continuously. Faced with this, raising the intensity of an undersized device empties the refill without making the scent perceptible. To compare the models room by room, our guide sets out which diffuser to choose according to floor area.
Which fragrance diffuser should you choose for a large 180 m² room?
For a large room of 180 m², the PURRA G300 is the only model in the range sized for that volume. It is a 101 cm aluminium alloy column standing on the floor, 200 mm in diameter and 2.8 kg, which diffuses by cold nebulization, without added water and without heating the composition.
PURRA, a French brand of home fragrance diffusers using cold nebulization, offers four devices and six scent refills. The G300 is its largest format, and the only one designed as a piece of furniture rather than an object set on a console table. Its reservoir is filled with a 100 ml bottle, a capacity that lasts around 78 days on the low setting, 50 on medium and 25 on high, based on 8 hours a day.
The column runs on a 10,000 mAh battery and charges over USB-C, which allows it to be placed in the middle of a lobby, far from any wall socket. It is set with three intensities and a 1 h, 2 h, 4 h or 8 h timer, and it will accept day-by-day time slots from the future PURRA app, like the other models in the range. We set out how this works in our article on the connected fragrance diffuser and its time slots.
PURRA G300 or X300S: the comparison by coverage and by price
The choice between the PURRA X300S and the PURRA G300 comes down to a single question: is the room larger than 100 m²? Below that, the X300S set on a piece of furniture is more than enough. Above it, only the G300 column, designed for 180 m², genuinely covers the volume. The table below sums up the two devices.
| Criterion | PURRA X300S | PURRA G300 |
|---|---|---|
| Coverage | 100 m² | 180 m² |
| Format | 34 cm, set on a piece of furniture | 101 cm, floor-standing column |
| Weight | 1.25 kg | 2.8 kg |
| Battery | 10,000 mAh | 10,000 mAh |
| Refill | 100 ml bottle | 100 ml bottle |
| Price | €199.90 | €349.90 |
The two devices share the same 10,000 mAh battery and the same refill format, which simplifies restocking when a household or a business owns several of them: a single 100 ml scent refill reference feeds both. If the main constraint is the absence of a socket rather than the coverage, the PURRA X300S and its battery life meets the need for 100 m², a case we cover in detail in our guide to the cordless rechargeable fragrance diffuser.
How do you set a diffuser in a lobby or under a high ceiling?
In a lobby or under a high ceiling, the official PURRA instruction is to start at intensity II in the morning, then move to III if the volume is open, if the ceiling is high or if the door opens constantly. The setting is done in four steps.
- Place the device away from thoroughfares. A hard and flat floor, clear of swing doors, cable running along a skirting board. The column is 101 cm tall and weighs 2.8 kg: it must be stable before it is switched on.
- Start at intensity II. On the G300, intensity II diffuses for 15 seconds then pauses for 100 seconds; intensity I diffuses for 15 seconds for 200 seconds of pause, and intensity III 15 seconds for 60 seconds.
- Have the setting judged from outside. Ask someone to come in and say what they smell. The right setting is the one you no longer notice on entering, and you cannot judge it yourself after an hour spent in the room.
- Set the time slots. A 1 h, 2 h, 4 h or 8 h timer on the device, and soon day-by-day time slots from the future PURRA app to cover opening hours only.
This method avoids the most frequent mistake in large volumes: turning the intensity up to maximum on the first day, no longer smelling anything after twenty minutes through olfactory adaptation, and concluding that the device is too weak when it is diffusing too much.
Where to place a 101 cm column in a large space
A 101 cm column goes where the air circulates, never in a dead corner. The reception lobby, the foot of an open staircase or the entrance to a through living room work better than a corner of a room, because air movement spreads the mist that the device cannot push on its own to the far ends of a 180 m² volume.
Three points deserve attention before installation. The floor must be hard and flat, otherwise the device may tip over. The device must stay clear of swing doors and traffic areas. The USB-C cable should run along a skirting board rather than cross an open passage. These constraints are those of any floor-standing furniture, and they explain why premises open to the public often place the column behind the reception desk, a practice we describe in our article on how to scent a hotel.
One last point that is often forgotten: the G300 has no ambient light. It is a deliberately discreet object, in aluminium alloy, available in black and champagne. In a lobby, that restraint is an asset: the device reads as a piece of furniture and not as technical equipment.
Frequently asked questions
Do you really need a model designed for 180 m² when the room is 120?
Yes, as soon as the room exceeds 100 m². The PURRA X300 and X300S models are sized for 100 m²; beyond that, only the G300, designed for 180 m², covers the volume. At 120 m², a 100 m² device runs permanently at maximum intensity without ever saturating the space.
The margin is not comfort, it is what allows diffusion at the intermediate intensity rather than at maximum. A device set to II uses up its refill more slowly than a device pushed to III continuously, and the scent stays perceptible without becoming overwhelming. If the ceiling is high or if the room opens onto a staircase, the question no longer even arises.
Is a high-end floor-standing fragrance diffuser stable in a busy area?
A 101 cm, 2.8 kg column resting on a circular base 200 mm in diameter is stable on a hard and flat floor, provided it is kept away from thoroughfares and swing doors. The official instruction is to run the power cable along a skirting board.
The real risk is not spontaneous tipping but impact: a trolley, a swing door, a running child. In a heavily used area, placing it behind a reception desk or against a solid wall settles the question. On thick carpet or on an uneven floor, it is better to give up on the floor-standing device.
Can you scent a large volume without drilling or having anything installed?
Yes. A floor-standing diffuser is set on the floor and started up without drilling, without any connection to the ventilation and without technical work. The 10,000 mAh battery and the USB-C power supply even allow it to be placed in the middle of a lobby, far from any wall socket.
That is the major difference from diffusion systems connected to an air handling unit, which require building work and a maintenance contract. Here filling is done with a 100 ml bottle that lasts around 78 days on the low setting, 50 on medium and 25 on high, based on 8 hours a day, and moving the device from one space to another takes a few seconds.
What is the small white part supplied inside the diffuser for?
It is a plastic transport part, fitted at the factory in place of the bottle to protect the circuit during shipping. It must be removed before the first start-up, failing which the device runs without ever producing mist. It is the second cause of no diffusion at start-up.
Keep it: it goes back on for every transport, move, reshipment or return to after-sales service. Without it, the circuit stays open during the journey and residual fragrance can leak into the body of the device.
Why is fragrance leaking under my diffuser?
In the vast majority of cases, the bottle is not screwed in as far as the stop. It is the number one cause of malfunction recorded in the manuals, ahead of the white transport part left in place and the collar not screwed back properly. Unscrew, reposition, screw back until you feel the stop.
If the leak persists, check the seal of the nebulization head: a deformed or split seal lets the liquid through and makes the mist drop at the same time. This check is part of the maintenance cycle and takes a few seconds. No device of this type is leak-tight once the bottle is badly engaged.
What Christmas gift can you give your parents-in-law?
An object that two people use together in the shared room works better than a personal gift. The PURRA Signature Set brings together six 10 ml bottles, each lasting around six weeks on the low setting based on 8 hours a day, and lets the household discover the six scents before choosing its own.
The classic pitfall is giving a scent that is too pronounced to a couple whose tastes you do not know. The set gets around the problem since it does not decide in their place. Allow for shipping within 24 to 48 hours, free delivery from €49 and a possible return within 14 days if the item is not right.
If your living room, your lobby or your showroom is larger than 100 m², the column is what you need: discover the PURRA G300, the large room fragrance diffuser for up to 180 m².
Article published on 30 August 2026 by PURRA.