99.9% of all heat pumps are 2 stage heat and 1 stage cool.

"Buck Turgidson" wrote in message
news:0qnGc.7247$pY2.3432@lakeread01...
I want to replace the thermosat in my mother's house, which has a heat
pump.
The thermostats at Home Depot either say for "single-stage" or
"multi-stage"
heat pumps. How do I know which heat pump she has?

It is a Bryant split-system # 541B/SHP, if that means anything to anyone.

Thanks.