Air purifier filters

Coway AP-1512HH Mighty: replacement filters that fit + a schedule that makes sense

The Coway Mighty is known for strong performance and a clear replacement schedule. The prefilter is washable, while the HEPA and carbon filters are consumables that should be replaced to maintain performance.

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Best habit for performance

Clean the prefilter on a cadence (often 2–4 weeks). A clogged prefilter chokes airflow and makes every other filter wear faster.

Odor control fades first

If smells are back but the HEPA still looks “okay”, your carbon layer may be saturated. Replace carbon or the combo filter.

Recommended replacements

These links open Amazon search results scoped to your model (or the maintenance tool type). Once you pick specific products, swap in direct links.

Coway AP-1512HH Mighty replacement filter (true HEPA + carbon combo)

Most purifiers use a combo filter. Replace when airflow drops or odor control fades.

Main filter

Best for

Allergy season
Visible dust buildup
Smells returning faster than usual

Fit check

Confirm filter height + tabs.
Choose the right variant (pet vs smoke vs standard) when offered.

Check price on Amazon

Tip: Save the packaging label or screenshot the model number to avoid ordering the wrong revision.

Coway AP-1512HH Mighty carbon filter / odor layer replacements

Carbon is usually the first thing to 'feel used' when odors come back.

Odor control

Best for

Cooking smells
Smoke / VOC odors
Musty room smell

Fit check

Some models use a separate carbon sheet; others integrate carbon into the main filter.

Check price on Amazon

Tip: Save the packaging label or screenshot the model number to avoid ordering the wrong revision.

Coway AP-1512HH Mighty prefilter cleaning tools (soft brush + vacuum attachment)

Keeping the prefilter clean is the cheapest way to extend HEPA life and improve airflow.

Maintenance

Best for

Pets
High dust
Running purifier 24/7

Fit check

Don’t soak or wash unless your manual explicitly allows it.

Check price on Amazon

Tip: Save the packaging label or screenshot the model number to avoid ordering the wrong revision.

Replacement schedule (practical baseline)

This cadence assumes average indoor air quality. Smoke, pets, renovations, and heavy cooking shorten the timeline.

Part	Typical cadence	Notes
HEPA filter	Every 12 months	Earlier for smoke, renovations, or allergy season.
Carbon filter	Every 6–12 months	Odor control fades first—replace when smells return.
Prefilter	Wash/clean every 2–4 weeks	—

Timing details HEPA explained

Fit checklist (avoid wrong filters)

Ordering a carbon filter that doesn't match the exact frame size.
Skipping prefilter cleaning (this shortens HEPA life).
Using off-brand filters without checking thickness and seal fit.

Where to find your exact model

Look for a label on the back/bottom of the unit. If the model name includes a letter (like “S”) or “Auto”, treat it as a different model and confirm filter compatibility.

Related guides

True HEPA vs HEPA-type: what you’re actually buying

Practical steps and common mistakes — written for real-world use.

Read guide

FAQ

How do I know it’s time to replace the filter?

Common signs: weaker airflow, purifier running louder, more dust on the filter surface, odors returning sooner, or your allergies worsening. Filter indicator lights are often timer-based, so use them as a reminder—not as the only signal.

Is it okay to vacuum a HEPA filter?

Usually no. Vacuuming can damage the HEPA media and reduce performance. If your model has a washable prefilter, clean that instead. Replace the HEPA filter when it’s loaded.

What’s the difference between 'true HEPA' and 'HEPA-type'?

True HEPA is a defined performance class. 'HEPA-type' is marketing and doesn’t guarantee the same filtration standard. For allergies and fine particles, prioritize true HEPA replacements when available.