What size generator for rv air conditioner?
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
Kitchen
Heating, Cooling & Fans
- 1
Water & Pumps
Laundry & Cleaning
Electronics & Office
- 1
- 2
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 F3800expandable system~$2,199
- rated 6,000W covers your 2,020W continuous load
- surge 9,000W covers your 7,835W start peak
- base 3,840Wh + expansion batteries (up to 26,880Wh) covers your 18,600Wh need
- 120/240V split-phase output
Static answer (crawlable summary)
Typical device list: RV Rooftop AC (13,500 BTU)×1, Router + Modem×1, Phone / Smartphone Charger×2.
Estimated from: Mfr spec: Dometic Brisk II 13.5K (install manual) · Mfr spec class: Netgear KB + measured (ARRIS SB8200) · Unbound Solar Power Table (secondary) — some household values are cross-checked class estimates (not single-model nameplates); check your own appliance nameplate before buying.
| Continuous load | 1,835 W |
|---|---|
| Startup peak | 7,835 W (driven by 1× RV Rooftop AC (13,500 BTU)) |
| Daily energy use | 14,880 Wh |
| Recommended capacity | 18,600 Wh (25% margin included) |
| Minimum inverter | 2,020 W continuous |
Frequently asked questions
What size generator for rv air conditioner?
For a typical setup (RV Rooftop AC (13,500 BTU), Router + Modem and Phone / Smartphone Charger), you need at least 1,835W of continuous power. The single biggest moment is startup: when 1× rv rooftop ac (13,500 btu) kicks on, the momentary draw peaks at 7,835W. For a full day of runtime we recommend at least 18,600Wh of battery capacity (your devices use about 14,880Wh 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 (with expansion batteries) covers the 7,835W startup peak and delivers up to 1.8 days fully expanded 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 RV Rooftop AC (13,500 BTU): 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.