Hello - I've done some shopping around & a lot of research & I've settled on replacing my 20-30 year old furnace & AC with new Amana stuff (AMV9 & ASX14) from a local HVAC place in Madison called Norstar.
My main question is, should I insist on a 2-stage thermostat? or is a 1-stage OK? It's my understanding that a 2-stage thermostat would be better because it would cause the high-speed to kick in right away if the temperature difference between actual & set point is big enough. Otherwise, if left to just a 1-stage, the furnace would start out on low, then kick in to high-speed after some amount of time. Is that right? Is this more of a "heat up the house quicker" issue or is it actually more efficient too?
With this combination of AM9 & ASX14, when running air conditioning in the summer, does the fan stay running even when the outside unit isn't? Or does it only work that way for the furnace? I'm just wondering if this will help even-out the temperature throughout the house during the cooling season as well.
Also, are there any particular things I should keep an eye out for with this package?