Single Stage or 2 Stage
I am replacing my upstairs furnace and AC unit in my 2500sq ft house. Sizing of the old unit was OK - question is should I go 2 stage vs 1 Stage. I am in Massachusetts. We are willing to pay the extra $$ upfront for the 2 stage to get the extra comfort and quieter operation, I realize that we will not make back the difference in savings and that's OK.
What I am concerned about is the reliability of the 2 stage equipment, it is more parts to break. Also looking at lennox vs. American Standard. We have gotten several quotes from different contractors and understand that the installation is more important than the equipment itself, hopefully we have found companies that will do the installation well.
Has anyone seen 2 stage units having a history of more repair problems vs. single stage?