Sizing tool
Find the right purifier for your room.
Tell us your room dimensions and how you'll use it. We'll work out how much clean air you need and recommend single-unit and multi-unit options that meet it — sorted from best value upward.
Room volume
48.0m³
Required clean-air delivery
240m³/h CADR
Cycles per hour
5ACH
Recommended configurations
—The other calculation
What does doing nothing cost?
Allergy medication, sick days, missed work — poor air has a price tag too. Adjust the sliders to your situation and compare.
£ per year. Average UK allergy sufferer spends £250-£500 on OTC + prescriptions.
Cold, flu, allergy flares — yours and the family's. UK average is 2-4 a year.
UK median full-time salary is around £35k. A sick day is roughly salary / 250 working days.
£ per year on extra dusting, replacing soft furnishings sooner, professional cleans.
Tricky space?
Open-plan, multi-room, or unusual layout?
The calculator assumes a single closed room. For open-plan layouts, multiple rooms, or specific concerns (allergies, immune-compromised occupants), drop us a line and we'll size it properly.