RV Air Conditioner Soft Starts

What does a soft start do for an RV air conditioner?

A soft starter reduces the inrush current your RV AC pulls at compressor startup by up to 70-75%. That drop in startup amperage lets you run the air conditioner on a 30-amp service, a small inverter generator (around 2,000-2,200 watts), or limited shore power without tripping breakers. It also lowers mechanical stress on the compressor, which extends the operational life of the unit. Pair a soft start with the rest of your RV electronics upgrades for a more stable 120V system.

Will a soft start kit work with my RV AC model?

Most soft start kits in this collection are designed for standard single-phase RV rooftop air conditioners from Coleman-Mach, Dometic, Furrion, and Advent, typically 11,000 to 15,000 BTU. Confirm your AC model number (printed on the shroud or interior ceiling assembly) and compressor type before ordering. If you have a Coleman ducted system, also check the matching Coleman ceiling assembly for ducted installations for compatibility notes. Text or call 817-984-1852 if you want a fitment check.

Can I run my RV air conditioner on a 2000-watt generator with a soft start?

In most cases, yes. A 13,500 BTU rooftop AC normally pulls a startup surge of 50-60 amps, which overwhelms a 2,000-watt inverter generator like the Honda EU2200i or Champion 2000. With a soft starter wired into the compressor circuit, that surge typically drops to 15-25 amps, putting startup within a 2,000-watt generator's headroom. Running load (steady-state) is still around 13-15 amps, so the generator handles continuous operation comfortably.

Is installing a soft start kit a DIY job?

Yes, for most owners with basic 120V wiring experience. Installation involves disconnecting shore power, removing the AC shroud, locating the compressor run capacitor, and wiring the soft start module in line per the included diagram. Plan on 30-60 minutes. Always confirm power is off at the breaker before opening the unit, and verify your specific AC model's wiring diagram. For accessories and replacement RV plug adapters you may need during the upgrade, check our adapter collection.