Choosing the right air purifier comes down to one thing more than anything else: matching the unit to the size of the room. Buy too small and the purifier runs flat out without ever properly cleaning the air. Buy too large and you've spent more than you needed to. Get it right and you'll have genuinely clean air running quietly in the background without giving it a second thought.
This guide walks through the entire AirX Pro range - five models from £233.99 to £1,173.08 - and tells you exactly which one is right for each room and situation.
Why Room Size Matters More Than Any Other Spec
Every air purifier has a CADR rating - Clean Air Delivery Rate - measured in cubic metres per hour. This tells you how much clean air the unit produces every hour. To work effectively, an air purifier needs to cycle all the air in a room at least four to five times per hour.
The maths is simple: multiply your room's floor area by its ceiling height to get the volume in cubic metres, then multiply by five. That's the minimum CADR you need.
A standard double bedroom of 15m² with a 2.4m ceiling has a volume of 36m³. Multiply by five and you need a CADR of at least 180 m³/h. The AXP-200 delivers 200 m³/h - perfect.
A large open-plan kitchen and living room of 50m² with the same ceiling height has a volume of 120m³. Multiply by five and you need 600 m³/h minimum. The AXP-200 would be completely overwhelmed. The AXP-800 at 720 m³/h is the right choice.
Getting this right is the single most important decision when buying an air purifier - more important than the brand, the design, or any individual feature.
The AirX Pro Range at a Glance
All five AirX Pro models share the same core technology: medical-grade HEPA filtration removing 99.9% of airborne particles, a laser PM2.5 sensor for real-time air quality monitoring, Tuya Smart App control, and a 5-year warranty - the longest in the category. What differs is the coverage area and output.
| Model | Coverage | CADR | Price |
|---|---|---|---|
| AXP-200 | Up to 25m² | 200 m³/h | £233.99 |
| AXP-400 | Up to 65m² | 380 m³/h | £388.77 |
| AXP-800 | Up to 130m² | 720 m³/h | £545.62 |
| AXP-1200 | Up to 180m² | 1,100 m³/h | £849.12 |
| AXP-1600 | Up to 250m² | 1,500 m³/h | £1,173.08 |
AXP-200 - For Bedrooms and Smaller Rooms (up to 25m²)
Price: £233.99 | CADR: 200 m³/h | Noise: 35-48 dB | Weight: 5.8kg
The AXP-200 is built for the room where clean air matters most - the bedroom. Most people spend seven to nine hours in their bedroom every night, and for allergy sufferers, hay fever sufferers, and anyone with asthma or respiratory sensitivities, the quality of air during sleep has a direct impact on how they feel the next day.
At its quietest setting the AXP-200 runs at just 35 dB - quieter than a library, and genuinely inaudible once you're asleep. Sleep mode automatically drops the fan to its lowest speed and dims the display so nothing disturbs you.
Despite its compact size (430 x 127 x 520mm), it delivers 200 m³/h of cleaned air - enough to cycle a standard double bedroom more than four times every hour. The laser PM2.5 sensor monitors air quality continuously and adjusts automatically, working harder when pollution or pollen levels rise and quieter when the air is already clean.
Best for:
- Master and guest bedrooms
- Children's bedrooms and nurseries
- Single-person home offices
- Small living rooms or studio flats up to 25m²
- Anyone who needs quiet overnight operation
Not ideal for: Any room larger than 25m² - the unit will struggle to maintain clean air and run continuously at high speed.
AXP-400 - For Living Rooms and Open-Plan Spaces (up to 65m²)
Price: £388.77 | CADR: 380 m³/h | Noise: 35-55 dB | Weight: 8.5kg | Energy: A+++
The AXP-400 is the sweet spot of the range for most UK homes. A typical living room runs between 20m² and 40m². An open-plan kitchen-diner can reach 50-60m². The AXP-400 handles both comfortably, with headroom to spare.
Its standout feature is the A+++ energy rating - the highest efficiency classification available. Running an A+++ appliance continuously costs a fraction of what an older or budget unit would cost over the same period. During hay fever season or in a home with pets, running your air purifier continuously rather than intermittently produces significantly better results - and with A+++ efficiency, the running cost is negligible.
Like the AXP-200, it features multi-stage medical-grade HEPA filtration, a laser particulate sensor, smart auto mode, sleep mode, child lock, and full Tuya Smart App control. It can be floor-standing or wall-mounted, which makes it particularly flexible in open-plan spaces where floor space is limited.
Best for:
- Living rooms and sitting rooms up to 65m²
- Open-plan kitchen-diners
- Larger home offices and studies
- Playrooms and family rooms
- Anyone prioritising energy efficiency and low running costs
Not ideal for: Bedrooms where absolute silence is required at maximum fan speed - the upper noise level of 55 dB is noticeable at full power, though sleep mode brings this right down.
AXP-800 - For Large Homes and Open-Plan Living (up to 130m²)
Price: £545.62 | CADR: 720 m³/h | Weight: 12.5kg | Free UK delivery
The AXP-800 steps up significantly in output - 720 m³/h CADR makes it capable of cleaning the air in very large residential spaces or handling the entire ground floor of a typical UK home. At 130m² coverage, it's the largest model suited to primarily residential use.
It shares the same medical-grade HEPA filtration and smart features as the rest of the range, and adds a PM2.5 real-time digital display so you can see air quality readings at a glance without opening the app. Negative ion technology releasing 24 million ions per second contributes additional air freshening beyond the filtration system itself.
At £545.62 it qualifies for free UK delivery - and at this output level, one unit can replace two smaller units in a large open-plan space, making the overall cost highly competitive.
Best for:
- Large open-plan ground floors
- Entire floors of open-plan modern homes
- Large living and dining spaces combined
- Conservatories and orangeries
- Large home offices or studios
Not ideal for: Spaces larger than 130m² - step up to the AXP-1200 for those environments.
AXP-1200 - For Offices, Clinics and Large Commercial Spaces (up to 180m²)
Price: £849.12 | CADR: 1,100 m³/h | Weight: 28kg | Free UK pallet delivery
The AXP-1200 crosses firmly into commercial and workplace territory. At 1,100 m³/h CADR and 180m² coverage, it's built for environments where air quality has operational, health, and compliance implications - offices, meeting rooms, GP surgeries, dental practices, physiotherapy clinics, schools, and hospitality venues.
It carries CE, ISO, FDA and EMA compliant manufacturing certifications - the same standards applied to equipment used in clinical settings. The laser PM2.5 sensor and real-time display allow facilities managers and business owners to monitor air quality actively, not just set and forget.
At 28kg and 1,413mm tall, the AXP-1200 is a substantial unit delivered on a pallet within four working days. It runs on standard 110-240V and requires no specialist installation - plug in, connect to the app, and it's operational.
Best for:
- Open-plan offices up to 180m²
- Meeting rooms and boardrooms
- Medical and dental practices
- Physiotherapy and wellness clinics
- Gyms and fitness studios
- School classrooms and staffrooms
- Hospitality venues and restaurants
Not ideal for: Residential use - the size, weight, and output are beyond what a home environment requires.
AXP-1600 - For Large Commercial and Healthcare Environments (up to 250m²)
Price: £1,173.08 | CADR: 1,500 m³/h | Weight: 32kg | Free UK pallet delivery
The AXP-1600 is the flagship of the AirX Pro range and the most powerful unit available. At 1,500 m³/h CADR across 250m², it's designed for large commercial spaces, healthcare environments, and any setting where the highest possible standard of air purification is required.
Patented purification technology, independently tested to remove 99.9% of airborne contaminants including bacteria, viruses, mould, and PM2.5 fine particles, combined with 24 million negative ions per second makes the AXP-1600 one of the most capable units in its class. At 1,806mm tall and 32kg, it has a commanding presence suited to the scale of the environments it serves.
Like the AXP-1200, it qualifies for free UK pallet delivery and requires no specialist installation.
Best for:
- Large open-plan offices and co-working spaces
- Hospital wards and healthcare waiting areas
- Large dental and medical practices
- Gyms, leisure centres and sports halls
- Hotel lobbies and conference facilities
- Large retail environments
- Schools and universities
Quick Reference - Which Model for Which Room?
| Room Type | Typical Size | Recommended Model |
|---|---|---|
| Single bedroom | 10-15m² | AXP-200 |
| Double bedroom | 15-20m² | AXP-200 |
| Home office (single room) | 10-20m² | AXP-200 |
| Living room | 20-40m² | AXP-400 |
| Open-plan kitchen-diner | 40-65m² | AXP-400 |
| Large open-plan ground floor | 65-130m² | AXP-800 |
| Small office (4-8 desks) | 40-80m² | AXP-800 |
| Medium office (10-20 desks) | 80-180m² | AXP-1200 |
| GP surgery / dental practice | 80-150m² | AXP-1200 |
| Large office / co-working space | 150-250m² | AXP-1600 |
| Hospital ward / healthcare | 150-250m² | AXP-1600 |
| Gym / fitness studio | 150-250m² | AXP-1600 |
Do I Need More Than One Unit?
For most homes, one unit per main living area gives the best results. A bedroom unit (AXP-200) and a living room unit (AXP-400) covers the two spaces where most people spend the vast majority of their time indoors.
Air purifiers clean the air in the room they're in. An AXP-400 in a downstairs living room won't clean the air in an upstairs bedroom - the two rooms need separate units. Many customers start with one unit for the room where clean air matters most (usually the bedroom for allergy and hay fever sufferers), experience the difference, and then add a second unit for their living space.
For commercial environments with multiple rooms - a dental practice with a waiting room, treatment rooms, and a reception area, for example - each space needs its own unit sized appropriately.
What All AirX Pro Models Have in Common
Whichever model you choose, every AirX Pro purifier includes:
- Medical-grade HEPA filtration - removes 99.9% of airborne particles including pollen, dust, bacteria, viruses, mould spores, and PM2.5 fine particles
- Laser PM2.5 sensor - continuously monitors air quality and automatically adjusts purification output
- Tuya Smart App control - monitor and control from anywhere via smartphone
- Negative ion technology - 24 million ions per second for additional air freshening
- Sleep mode - quiet, dim operation for overnight use
- Child lock - prevents accidental setting changes
- 1,500-hour filter countdown - tells you exactly when the filter needs replacing
- 5-year warranty - the longest standard warranty in the category
- CE certified - meets UK and European safety standards
Frequently Asked Questions
Can I use an AirX Pro purifier in a room larger than its rated coverage? You can, but it won't perform optimally. The unit will run at higher fan speeds more often, consume more energy, and may not achieve the same air quality levels as it would in a correctly sized space. If your room is larger than the model's rating, step up to the next model.
How often do I need to replace the filter? The AirX Pro filter countdown display counts down from 1,500 hours of use. At typical continuous operation that equates to roughly two months. In practice, most users running the purifier on auto mode (which runs more slowly when air is already clean) find filters last three to four months. Replacement filters are available from Veralis.
Can I move the unit between rooms? Yes - all AirX Pro models are freestanding and portable. The AXP-200 and AXP-400 are light enough to move easily. The AXP-800 at 12.5kg is manageable. The AXP-1200 and AXP-1600 at 28kg and 32kg are designed to stay in one location.
Does it work for pet allergies as well as hay fever? Yes. Pet dander - the microscopic skin flakes that trigger allergies, not the hair itself - is captured very effectively by HEPA filtration. An AirX Pro purifier running continuously in a room where pets spend time will significantly reduce airborne dander levels.
What's the running cost? The AXP-400 carries an A+++ energy rating at 40W. At the UK average electricity rate of approximately 24p/kWh, running continuously costs around 23p per day - less than £7 per month. The AXP-200 at 22W costs even less. The larger commercial models consume more power proportionally but are typically used in commercial settings where energy costs are managed differently.
Still Not Sure?
If you're unsure which model is right for your space, call us on 0330 122 1023 or email contact@veralis.co.uk and we'll help you choose. For commercial or trade enquiries, visit our trade accounts page for bulk pricing and project support.
Shop the full AirX Pro range →
All AirX Pro air purifiers feature medical-grade HEPA filtration, 5-year warranty, and Tuya Smart App control. Free UK delivery on orders over £500. AXP-200 and AXP-400 delivered within 3 working days.
