How long can the EcoFlow DELTA Pro 3 run a Gas furnace blower?
16.6 hours
Formula: (4.1kWh × 0.85 inverter efficiency) ÷ 5.04 kWh/day = 16.6 hours. At continuous 600 W draw (no duty cycle), about 5.8 hours.
What if you add a battery? The + Extra Battery config jumps to 8.2kWh — roughly 1.4 days on a Gas furnace blower.
Appliance
Gas furnace blower · 600 W / 1500 W surge
Battery (base)
4.1kWh · 4kW / 8kW surge
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Runtime Quick-Check
Runtime Quick-Check
Pick a battery and an appliance — see days of runtime after the 0.85 inverter derate.
16.6 hours
Formula: (4096 Wh × 0.85) ÷ 5.04 kWh/day = 16.6 hours. Continuous draw ≈ 5.8 hours at full load.
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