The best thing about a MERV-13 purifier is that the filters are a standard replaceable part — not a proprietary cartridge that locks you into one supplier at £65 a pop. Budget from about £58 a pair (two filters, lasting 6–12 months).
MERV-13 filters & kits
Standard replaceable MERV-13 media and complete Luggables kits, shipped across the UK.
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Ready to clean up your London air?
Luggable MERV-13 kits deliver up to 681 m³/h CADR — built on the Corsi-Rosenthal principle, from £229. Ships from Oxford in 2–3 days.
Shop the UK store → See all kits🎟️ 10% off with code STAROFFER — applied automatically when you use these links.
When to replace
- Every 6–12 months for typical use.
- Sooner near heavy traffic, building works or if you burn wood — London main-road homes are at the shorter end.
- If airflow drops or the media looks grey, it's time.
Frequently asked questions
How much do MERV-13 filters cost per year?
From about £58 a pair (two 3M Filtrete filters, lasting 6–12 months) — a fraction of proprietary HEPA cartridges, because MERV-13 media is a standard part.
How often should I change them?
Every 6–12 months, sooner in high-traffic or dusty London locations, or if airflow noticeably drops.