Micro-Air EasyStart Breeze RV AC Soft Starter | ASY-399-X20

Solve your RV's AC startup power problem with the Micro-Air EasyStart Breeze Soft Starter (Part #ASY-399-X20). Reduces AC compressor startup current by up to 75% — enabling you to run up to 2 air conditioners on a single 30-amp power cord, boondock with a portable generator, or eliminate loud startup bumps that wake up the RV. The smallest EasyStart yet at 40% smaller than the 364 model.

75% Startup Current Reduction

The EasyStart Breeze uses adaptive learning technology to dramatically cut AC compressor startup current:

• Up to 75% reduction in startup current draw
• Run 2 ACs on a single 30-amp power cord (total under 30 amps)
• Boondock in remote areas with a portable generator
• Run on pure OR modified sine inverters
• Operate on generator, inverter, or limited utility power

Quieter, Smoother AC Startup

Say goodbye to those bumps in the night — the Breeze delivers audibly quieter and smoother compressor startups. Meaningful for full-timers, families, or anyone tired of being jolted awake by AC startup noise.

Smallest EasyStart Yet

40% smaller than the previous 364 model. IP65-rated weatherproof enclosure with reduced overall footprint including the mount.

Wide AC Compatibility

Works with a broad range of RV air conditioner and heat pump systems:

• Dometic
• Coleman-Mach
• GE
• Marine Air
• Cruisair
• Most marine air conditioner systems
• RV rooftop and basement air conditioners
• Heat pumps

Compressor Protection Features

• Real-time fault detection — precisely identifies and immediately prevents issues as they arise
• Enhanced fault detection for compressor protection
• Integrated short-cycle prevention — intelligent delay timer prevents damage from immediate restarts while avoiding unnecessary delays on normal cycles
• Power interruption + brownout protection — prevents damage from immediate restart attempts
• Precise overcurrent and stall detection — safeguards compressor motor from harmful sustained or abrupt low-voltage conditions
• Multi-start resettable learning algorithm — optimizes performance and efficiency over time

What's Included

• (1) EasyStart Breeze soft starter
• Installation kit (Micro-Air KIT-364-368-RT2)

Additional Resources

• Micro-Air EasyStart Installation Knowledge Base
• Micro-Air EasyStart Breeze Product Video

Specifications

• Voltage: 100-125 VAC, 50-60 Hz
• Dimensions: 5.75" L × 3.5" W × 2" H
• Wire Harness: 40"
• Weight: 8 lbs
• Enclosure: IP65 weatherproof

⚠️ Professional Installation Recommended

Involves 120V AC electrical wiring and integration with your RV air conditioner's compressor circuit. Installation should be performed by a qualified RV service technician unless you have experience working with RV AC electrical systems.

2-Year Limited Warranty

Genuine Micro-Air

Micro-Air is a US-founded RV/marine HVAC controls specialist (est. 2003).

Key Features

• Genuine Micro-Air EasyStart Breeze soft starter
• Part number: ASY-399-X20
• Up to 75% startup current reduction
• Run 2 ACs on a single 30-amp power cord
• Boondock friendly — works with portable generators and inverters
• Pure OR modified sine inverter compatible
• Quieter, smoother AC startup
• 40% smaller than the previous 364 model
• IP65 weatherproof enclosure
• Wide compatibility: Dometic, Coleman-Mach, GE, Marine Air, Cruisair, most marine systems
• For rooftop OR basement RV ACs and heat pumps
• Real-time fault detection
• Compressor protection: Short-cycle prevention, brownout protection, overcurrent and stall detection
• Adaptive multi-start learning algorithm
• Installation kit included (KIT-364-368-RT2)
• Dimensions: 5.75" × 3.5" × 2"; Weight: 8 lbs
• Voltage: 100-125 VAC, 50-60 Hz
• Backed by 2-year limited Micro-Air warranty

Specifications

• Brand: Micro-Air
• Model: EasyStart Breeze
• Part Number: ASY-399-X20
• Type: RV Air Conditioner Soft Starter
• Startup Current Reduction: Up to 75%
• Voltage: 100-125 VAC, 50-60 Hz
• Inverter Compatibility: Pure OR modified sine
• Enclosure Rating: IP65 weatherproof
• Dimensions: 5.75" L × 3.5" W × 2" H
• Wire Harness: 40"
• Weight: 8 lbs
• Compatible AC Brands: Dometic, Coleman-Mach, GE, Marine Air, Cruisair, most marine air conditioner systems
• Compatible AC Types: RV rooftop, basement, heat pumps
• Protection Features: Real-time fault detection, short-cycle prevention, brownout protection, overcurrent and stall detection
• Includes: EasyStart Breeze unit, installation kit (KIT-364-368-RT2)
• Warranty: 2-year limited manufacturer warranty