Start with the prescription. A doctor or sleep clinic needs to confirm the diagnosis and the pressure settings before you buy, so book that first. Once you have it, the mask fit becomes the whole game. A mask that leaks or presses on the bridge of the nose gets abandoned within a week, so choose a retailer who does in-person fittings and lets you try more than one style. In our experience, that hands-on service matters far more than a slightly lower sticker price online.
Montreal's older housing stock shapes a few practical choices. In a Plateau or Rosemont flat with radiator heat, winter air gets very dry, and dry air makes CPAP therapy uncomfortable, so prioritize a machine with a heated humidifier and a heated hose. In a downtown or Griffintown condo, bedrooms can be small and shared, so ask about noise level; the quieter units are worth it. For a parent who travels to visit family or spends part of the year elsewhere, a lighter model with a travel case earns its keep.
On the machine itself, we lean toward auto-adjusting (APAP) over fixed pressure for most older adults. APAP adapts through the night, which tends to be gentler and more forgiving as breathing changes with age or a cold. The trade-off is honest: APAP usually costs more up front, and some people with stable, well-set pressure do just fine on a fixed unit. If budget is tight and the pressure is dialled in, fixed is a reasonable call.
Choose a retailer with real senior and accessibility experience, clear warranty terms, and quick service if the machine acts up. Ask who handles supply reorders (masks, filters, and cushions wear out) and whether they help with Quebec's assistive-device supports or Veterans Affairs claims. A shop that helps you keep the therapy going, not just make the first sale, is the one to pick.