What will the Goal Zero Yeti PRO 4000 run?
The Goal Zero Yeti PRO 4000 stores 3,994Wh with 3,600W of output (7,200W surge). Running one thing at a time, that's about 33 to 69 hours of a refrigerator, about 4 to 9 days of a CPAP with the humidifier off and about 4 to 6 days of Wi-Fi.
Goal Zero's own page lists 3,994 Wh, 3,600 W continuous and 7,200 W surge, with a 5-year warranty. It says the unit can back up to 10 home circuits through its Haven 10 manual transfer switch and runs almost any home appliance aside from air conditioning. A good fit for fridge, lights, Wi-Fi and a medical device, and it needs a transfer switch or an electrician for the circuit hookup.
One appliance at a time
| Running just this | Runs it for | Runs it? |
|---|---|---|
| Refrigerator | 33 to 69 hours | Yes |
| Freezer (chest or upright) | 38 to 93 hours | Yes |
| CPAP (blower only: humidifier and heated tube off) | 4 to 9 days | Yes |
| CPAP with heated humidifier (and heated tube) | 40 to 99 hours | Yes |
| Home oxygen concentrator | 9 to 11 hours | Yes |
| Modem and Wi-Fi router | 4 to 6 days | Yes |
| Laptop (plugged in, in use) | 38 to 76 hours | Yes |
| TV (32 to 65-inch LED) | 22 to 76 hours | Yes |
| LED light bulb (60W equivalent, each) | 6 to 7 days | Yes |
| Gas furnace blower (1/3 to 1/2 HP) | 5 to 6.5 hours | Yes |
| Window air conditioner (10,000 BTU) | 2.5 to 5 hours | Yes |
| Microwave | 2 to 5 hours | Yes |
| Coffee maker | 2.5 to 4 hours | Yes |
| Electric space heater | 2 to 6 hours | Yes |
| Sump pump (1/2 HP) | about 3 hours | Yes |
A few things together
| Running together | Runs them for | Runs it? |
|---|---|---|
| Refrigerator, Wi-Fi and four LED bulbs | 20 to 36 hours | Yes |
| Refrigerator, freezer and Wi-Fi | 17 to 40 hours | Yes |
| CPAP (humidifier off) and one LED bulb | 3 to 5 days | Yes |
| Wi-Fi, a laptop and two LED bulbs | 26 to 47 hours | Yes |
Runtime: 3,994Wh × 90% usable × 85% inverter efficiency ÷ (the average draw + about 10W the station uses itself), from Energy Star figures and makers' manuals. "Runs it?" checks its output and surge rating against the cautious running and starting figures on generator makers' and DTE Energy's charts. Plan on the low end. Your own list: the power station calculator.
Questions
Can the Goal Zero Yeti PRO 4000 run a refrigerator?
Yes. It runs one for about 33 to 69 hours on its own, and its output and surge rating cover the cautious figures on generator makers' charts.
How long will the Goal Zero Yeti PRO 4000 run a CPAP?
About 4 to 9 days with the humidifier and heated tube off, or about 40 to 99 hours with them on, running nothing else. Running it from the 12V outlet through the CPAP maker's own converter avoids the inverter's losses, so it lasts longer than these figures.
Can the Goal Zero Yeti PRO 4000 run a space heater?
Only briefly: a space heater on high draws up to about 1,500 watts, so it lasts about 2 to 6 hours. See how to stay warm without power for what works better.