Some time ago I detailed our 2021 decision to upgrade to a variable speed central air conditioner, the various features and benefits underlying that decision. That was the same year, after the Great Texas Freeze of 2021, we went about implementing a practical strategy for backup power.
We had been planning for these projects for quite some time, setting aside the necessary funds. Things might have been quite different if the old air conditioner had outright failed unexpectedly, requiring immediate replacement. We probably would have opted for a single-stage replacement purely on the basis of cost. After all, that’s what happened in 2002 when, as new homeowners, we were more-or-less forced into buying the American Standard Allegiance 12 system.
Single-stage systems certainly get the job done. They’re standard, builder-grade equipment. They simply don’t fit into our current strategy for backup power. At least, not without some fiddling. What follows in an exploration of that fiddling.