Start with a prescription and a sleep study. No reputable retailer will sell a machine without one, and that's a good sign. What matters most for an older adult is the mask fit. Faces change with age, dentures shift the jaw, and a mask that leaks all night is a mask that gets abandoned in a drawer. Look for a Dartmouth retailer who does hands-on fittings and lets you try more than one style, and who has real experience serving seniors.
Think about the home. In older houses around Crichton Park or Woodside, bedrooms can be small and outlets tucked in awkward spots, so ask about cord length and a quiet machine that won't hum through thin walls. In condos near downtown Dartmouth, noise level matters even more if a partner sleeps close by. Dartmouth winters are damp and cold, which dries out airways, so a machine with a heated humidifier and heated tubing is worth prioritizing here rather than treating as an extra.
On the machine itself, we lean toward auto-adjusting (APAP) over fixed pressure for most first-time users. APAP adapts through the night, which is more forgiving while your parent gets used to therapy, and the data tracking helps your clinic fine-tune things without guesswork. Fixed pressure is fine once a good setting is dialled in, and it can cost a little less, but for a nervous new user the flexibility of APAP usually wins. The trade-off is honest: APAP models tend to sit at the higher end of the price range, so you're paying for comfort and adaptability up front.
Prioritize a retailer who offers a proper trial period, clear warranty terms, and quick service if the mask or machine acts up. Ask how they handle resupply of masks, filters, and cushions, since those wear out and a shop that mails reminders saves a lot of hassle. A slightly pricier provider with strong follow-up beats a bargain shop that disappears after the sale.