Pirjeco RV AC Soft Start Kit 1.75–3.5 Ton 115–240V — reduces startup current up to 70%, waterproof compact design

Pirjeco RV AC Soft Start Kit reduces compressor startup current by up to 70%, allowing 1.75–3.5 ton rooftop air conditioners to start smoothly on small generators, RV inverters, and limited shore power.

Designed for motorhomes, travel trailers and campers, this compact soft starter installs inline with most 115–240V, 50–60Hz rooftop AC units to limit surge current and protect electrical systems. Preinstalled start/run capacitors and a sealed housing simplify wiring while cutting mechanical stress on the compressor. The kit is built to withstand outdoor RV conditions, and includes color-coded wiring and mounting hardware so owners can perform a straightforward DIY installation.

How does the Pirjeco soft start let my RV AC run on a small generator?

The soft start ramps the compressor motor current at startup so the initial surge is greatly reduced. By trimming peak amps 65–70%, a rooftop AC that normally trips a generator or inverter can start reliably without overloading the supply.

• Reduces startup amperage by approx. 65–70% for smoother generator starts
• Preinstalled capacitors remove need for extra contactor or bulky components
• Compatible with non-inverter rooftop AC units up to 36,000 BTU (fits 1.75–3.5 ton)
• Allows dual AC setups to operate more easily under limited shore or generator power

What voltages and RV air conditioners are supported?

This unit works across a broad range of RV electrical systems, supporting 115–240V and 50–60Hz service. It’s intended for rooftop packaged AC compressors rated roughly 1.75 to 3.5 tons (including common 15,000 BTU and up to 36,000 BTU models), making it suitable for many motorhomes and travel trailers.

• 115–240V compatibility covers standard RV shore power and many small generators
• 50–60Hz support fits international and North American systems
• Designed for rooftop compressor motors in the 1.75–3.5 ton range
• Works with non-inverter AC models that draw large startup current

How difficult is installation and what comes in the box?

The kit includes color-coded wires, insulated terminals, butt splices, mounting screws and a clear wiring diagram printed on the housing, making a DIY install feasible for most RV owners with basic electrical experience. The sealed casing and labeled connections reduce guesswork and keep the unit protected after mounting.

• Complete wiring pack: color-coded leads, terminals and butt splices included
• Printed wiring schematic on device for straightforward hookup
• Mounting screws supplied for secure installation on rooftop AC or chassis
• 3 LED indicators (Run/Start/Self-test) to simplify troubleshooting

What performance and durability features should I expect?

Pirjeco built the soft start to reduce mechanical wear and loud startup noises by controlling the compressor ramp. The enclosure is waterproof and the internal components are chosen for long service life under typical RV camping conditions.

• Smooth motor ramp minimizes mechanical shock and loud compressor bangs
• Waterproof housing stands up to moisture and outdoor environments
• LED status lights provide quick diagnostic information in the field
• Reduces stress on inverter and generator systems to avoid shutdowns

Who this product is for: RV owners, full-time campers and overlanders who need reliable air conditioning starts on limited electrical resources — especially those using small portable generators, inverter systems, or who want to run two rooftop units from reduced shore power. It’s also a good fit for DIY-minded technicians who prefer a compact, weatherproof soft starter with clear wiring and onboard diagnostics.