from last few months of runtime history log
here is the rough estimate performance of my heat pump and heat loss on a cloudy day/night. indoor is kept at 71F, 24 hour a day.
when outside is around 45F, take 13 minutes to raise 1F, about 1 hour to loose 1F
when outside is around 40F, take 15 minutes to raise 1F, about 40 minutes to loose 1F
when outside is around 30F, take 18 minutes to raise 1F, about 30 minutes to loose 1F
when outside is around 25F, take 22 minutes to raise 1F, about 20 minutes to loose 1F
when outside is around 20F, take 30 minutes to raise 1F, about 15 minutes to loose 1F


my heat pump take about 3 to 5 minutes of runtime to feel considerable warm air at supply register, currently my thermostat swing is 1F, i am wonder if i increase my indoor temperature to 72F, and increase my swing to 1.5F or maybe 2.0F, will the home still feel comfortable and still as efficient, or maybe even more efficient?