What is the tonnage for a lennox hs25-651-2p y serial 5894c22519?

The Lennox HS25-651-2P is a heat pump unit, and its tonnage is typically 2.5 tons. The model number indicates the capacity of the unit, with the "651" designating the cooling capacity in thousands of BTUs. For precise specifications, always refer to the manufacturer's documentation or label on the unit.