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Trane
3 Ton Packaged Dual Fuel Unit
Trane 70,000 BTU Heating, 15.2 SEER2, Two-Stage, R-454B | 5DCZ5036A1070
$10,336.99
A 3 ton packaged dual-fuel unit provides 36,000 BTU of cooling for homes ~1,500–1,800 sq ft — a common size that shows how automatic heat-pump-to-gas switching works. Everything lives in one outdoor cabinet, so there's no indoor equipment to house.
1 product
A dual-fuel unit runs its heat pump whenever that's the cheaper way to heat, then switches to the gas furnace once outdoor temperatures fall past a set balance point where gas becomes more economical or effective. The control handles the handoff automatically, so you get efficiency most of the year and reliable heat in deep cold.
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A control compares the outdoor temperature to a set balance point. Above it, the efficient heat pump heats; below it, the gas furnace takes over. The switch is automatic.
The heat pump handles most of the heating season at low cost, and gas only runs during the coldest stretch — so you get heat-pump savings without sacrificing cold-weather comfort.