Build a product FAQ from actual support questions instead of marketing questions in disguise

Build a product FAQ section from the real recurring questions and concerns below — not invented marketing questions like "why should I buy this?" dressed up as an FAQ.

PRODUCT
Nimbus air purifier, 500 sq ft coverage

RECURRING SUPPORT QUESTIONS / REVIEW CONCERNS
How loud is it on the highest setting? Does it actually help with pet odor or just dust? Will it work in a room with high ceilings? Do I need to buy filters separately and how often?

FACTS NEEDED TO ANSWER THEM ACCURATELY
54dB on highest setting (comparable to a quiet conversation), HEPA + activated carbon filter handles odor and dust both, rated for 500 sq ft at 8ft ceiling height (may underperform above that), filters sold separately, replace every 6-8 months depending on use

QUESTIONS WE CANNOT ANSWER DEFINITIVELY
Whether it will be loud enough to disturb a light sleeper specifically — this depends on the individual and the room's baseline noise level

For each recurring question or concern I gave you, write it as a real shopper would actually phrase it (contractions, plain language, not marketing-polished grammar), then answer it using only the facts I gave you — directly, in 1-3 sentences, leading with the actual answer before any supporting detail. If a question implies a real limitation or downside of the product, do not answer around it — state the limitation plainly and then, if there's a genuine mitigation, offer it after.

For anything in the unanswerable list, do not guess or generate a plausible-sounding answer — write a short honest response that says what we don't know or what depends on the buyer's specific situation, and where they should actually go to get a real answer (a support contact, a spec they should check themselves).

WHAT NOT TO DO
Do not include a question whose real purpose is just to restate a selling point ("What makes this product special?") — every question here should be something a person would type into a support chat or ask a friend before buying, not something a marketer wrote to sound like a question.

OUTPUT FORMAT
A Q&A list, each question bolded, each answer directly below it. Flag with a note any question where the given facts were insufficient to answer confidently.