Start with the mask, not the machine. In our experience, the mask is what makes therapy stick, and a good Winnipeg retailer will let an older adult try a few styles in person rather than shipping a box. If your parent breathes through their mouth or has a bit of arthritis in the hands, say so up front. That changes whether a nasal pillow, nasal, or full-face mask is the right call, and how easy the clips are to manage half-asleep.
Winnipeg's dry winter air matters more here than in most cities. Between the cold snaps and the constant furnace heat in older homes across River Heights or Elmwood, an integrated humidifier is worth prioritizing, and a heated tube helps prevent condensation, what people call rainout, when a machine sits near a chilly exterior wall or a drafty window. Ask about auto-adjusting (APAP) versus fixed pressure too. APAP costs a little more, but it adapts on its own night to night, which is easier for seniors than fussing with settings. For most older adults we'd steer toward APAP with a humidifier. The trade-off is a higher upfront cost than a plain fixed-pressure unit, and not everyone needs the extra features.
Look for a retailer with real experience serving seniors: staff who handle Manitoba's assistive-device paths, who register the machine's data card so your family doctor or a sleep clinic can review therapy, and who offer follow-up fittings when the mask cushion wears out. Check the warranty and how fast they respond when something breaks, because a dead machine in January isn't something you want to wait out. A prescription is required either way, so if you don't have one yet, ask the retailer how they coordinate with local sleep clinics before you buy.