Open-plan living — the default in newer Irish builds — defeats small purifiers: they clean their corner while the kitchen end pumps out cooking particles. Big spaces need CADR of 300+ m³/h to manage 3+ air changes hourly. These five movers handle 60–100 m² honestly, ranked on airflow, noise at useful speeds, and cost per cubic metre cleaned.
Price and availability accurate as of publishing; subject to change.
Buying guide: how to choose
HEPA means H13 or it doesn't mean much
Look for 'True HEPA' H13/H14 — filters capturing 99.95%+ of 0.3-micron particles. 'HEPA-type' or 'HEPA-like' is marketing for lesser filters. For Irish mould spores (1–20 microns) and pollen (10–100 microns), genuine H13 catches essentially everything.
CADR is the horsepower figure
Clean Air Delivery Rate tells you how much purified air the unit moves. Match it to your room: you want the room's volume cleaned 3–5 times per hour. A typical 20 m² Irish living room (~50 m³) needs a CADR of 150–250 m³/h minimum.
Filter costs are the real price
A €150 purifier with €60 annual filters costs more over five years than a €250 unit with €30 filters. We factor replacement costs into every recommendation — it's where cheap brands claw their money back.
Placement and runtime
Run continuously on low/auto rather than blasting occasionally — particle levels rebound within hours. Place 30+ cm from walls, ideally in the room you sleep in: you spend a third of your life there breathing its air.
Frequently asked questions
What size air purifier do I need?
Match CADR to room volume: aim for 3–5 air changes per hour. Bedroom (~30 m³): CADR 100–150. Living room (~50 m³): CADR 150–250. Open-plan (~80 m³+): CADR 300+. Undersized purifiers running flat-out are loud and ineffective.
Do air purifiers remove smells and smoke?
Only models with substantial activated carbon filters handle odours and gases — thin carbon sheets do little. For turf/wood smoke drifting in, or cooking smells, prioritise units with 0.5 kg+ carbon. HEPA alone removes smoke particles but not the smell.
Air purifier or dehumidifier for an Irish home?
Different jobs: dehumidifiers remove moisture (fixing mould's cause, condensation, damp), purifiers remove particles (spores, pollen, dust, smoke). Damp/mould house: dehumidifier first. Allergies/asthma: purifier first. Many Irish homes genuinely benefit from both.
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