The Department of Energy changed sizing requirements in 2019. See the below chart for the new pint capacity.
Approximate coverage AreaOld Pint CapacityNew Pint Capacity 400 sq.ft.3020 600 sq.ft.4025 800 sq.ft.5030 1,000 sq.ft.6035-40 1,200 sq.ft.7045-50 1,500 sq.ft.9055-60