Hi, I'm Joe, a retired engineer. This is my first post.
We have an Carrier Infinity 96 furnace. When it cycles on, the blower runs at a nice, slow speed for about 5 minutes or so then it kicks into warp speed for about another 5 minutes. Why does it do that? Can I change that? The 2 guys that installed it a few years ago are long gone.
It only has a single stage t-stat. How much benefit will a two stage unit provide?
Sorry for all the questions, but inquiring minds need to know.