The master bedroom in my parent's house tends to be the coolest room in the house, and my father complains it's too cold. The A/C register in the ceiling does have a flow adjustment lever, but it's difficult for my 80-year-old dad to reach and adjust. I tried to attach a pull wire, but the lever is just a slightly bent strip of metal, and I can't manage to tie anything to it securely enough to be usable.
Does anybody make a register that's easier for the elderly to adjust? Where can I find it? A register with a built-in thermostat might work, too. Is there such a thing?
Or does someone have another idea about keeping the room from getting too cold (without the rest of the house becoming too hot)?