Plan the room
Choose the appliance after you understand the room
Separate filtration, moisture removal and room measurements before comparing products or calculating a budget.
Read the guideTHE INDOOR ENVIRONMENT / A UK FIELD GUIDE
Know your room.
Choose with care.
A clearer view of air purifiers, humidity and the small details that make a useful purchase.
Start with your room ↗
FIND YOUR STARTING POINT
What would you
like to understand?
01
Air purifiers
Room size, clean-air delivery and filter records.
02
Dehumidifiers
Moisture removal, conditions and practical placement.
03
Humidifiers
Water, maintenance and careful everyday use.
04
Measure first
Readings, trends and the limits of a sensor.
05
Plan the room
Dimensions, electricity and running-cost assumptions.
06
Keep it useful
Filters, cleaning, records and responsible disposal.
YOUR ROOM, IN NUMBERS
A little measuring.
A clearer decision.
Change the assumptions. Keep the calculation.
NOTES WORTH KEEPING
Good questions first.
Air purifiers
Read CADR with the room-size assumptions attached
Compare the named particle rating, units and operating conditions before treating coverage figures as equivalent.
Read the guideKeep it useful
Build an annual filter allowance from the exact replacement part
Separate annualised cost from purchase dates, pack quantities and model-specific replacement guidance.
Read the guideDehumidifiers
Read a dehumidifier capacity with its test conditions
Litres per day needs temperature, humidity and a consistent source before it becomes a useful comparison.
Read the guide
Plan the room
Measure room area and volume without mixing the units
Create a useful room sheet with metres, square metres and cubic metres kept separate.
Read the guide
Plan the room
Estimate appliance electricity from watts, hours and your tariff
Use a transparent constant-power example and keep it separate from measured consumption.
Read the guideOUR EDITORIAL PROMISE
Clarity, without the claims.
We explain what a specification can tell you, what it cannot,
and which question to ask next. No hands-on testing is claimed.