What size generator do I need for my fridge and freezer?
Check, uncheck or adjust the typical device list below — watts, startup surge and battery size update instantly. Numbers come from U.S. DOE, ENERGY STAR and manufacturer spec sheets, not marketing copy.
1. Check what you need to power
Refrigeration & Freezers
- 1
- 1
Kitchen
Heating, Cooling & Fans
Water & Pumps
Laundry & Cleaning
Electronics & Office
Medical Devices
Power Tools & Outdoor
Lighting
2. Your sizing
Assumptions: daily hours per device follow DOE / ENERGY STAR duty cycles; capacity adds a 25% margin. Check your appliance nameplates — actual draw varies by model.
3. Best matches from our 6-brand database
- Anker SOLIX F3800~$2,199
- rated 6,000W covers your 240W continuous load
- surge 9,000W covers your 1,325W start peak
- 2.2 days of your typical daily use (3,840Wh / 1,720Wh)
- 120/240V split-phase output
- EcoFlow DELTA Pro 3~$2,799
- rated 4,000W covers your 240W continuous load
- surge 8,000W covers your 1,325W start peak
- 2.4 days of your typical daily use (4,096Wh / 1,720Wh)
- 120/240V split-phase output
- EcoFlow DELTA 3 Maxpartial coverage ~95% of target~$899
- rated 2,400W covers your 240W continuous load
- surge 4,800W covers your 1,325W start peak
- covers about 95% of the target capacity for your selected duration (2,048Wh vs 2,150Wh recommended)
Static answer (crawlable summary)
Typical device list: Refrigerator (top-freezer, ~16 cu ft)×1, Freezer (chest, ~15 cu ft)×1.
Estimated from: Energy Star Certified Products
| Continuous load | 215 W |
|---|---|
| Startup peak | 1,325 W (driven by 1× Freezer (chest, ~15 cu ft)) |
| Daily energy use | 1,720 Wh |
| Recommended capacity | 2,150 Wh (25% margin included) |
| Minimum inverter | 240 W continuous |
Frequently asked questions
What size generator do I need for my fridge and freezer?
For a typical setup (Refrigerator (top-freezer, ~16 cu ft) and Freezer (chest, ~15 cu ft)), you need at least 215W of continuous power. The single biggest moment is startup: when 1× freezer (chest, ~15 cu ft) kicks on, the momentary draw peaks at 1,325W. For a full day of runtime we recommend at least 2,150Wh of battery capacity (your devices use about 1,720Wh per day, plus a 25% margin for a full day of use).
Which power stations can handle this?
Based on published specs, Anker SOLIX F3800, EcoFlow DELTA Pro 3, EcoFlow DELTA 3 Max cover the 1,325W startup peak and deliver 2.2 days / 2.4 days / about 95% of a full day of typical daily use. Check the comparison cards above for the full numbers.
Why is the startup surge higher than the running watts?
Motor-driven devices (fridge compressors, well pumps, air conditioners) draw 2-5× their running power for a split second at startup — measured as locked-rotor amps (LRA). On this page the biggest spike comes from the Freezer (chest, ~15 cu ft): a station that only meets the running load will trip or stall when it starts. Data sources: U.S. DOE Energy Saver, ENERGY STAR certified products, manufacturer spec sheets.