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Micro‑Air EasyStart Flex Soft Starter (ASY‑398‑X1S‑BL) – Reduce AC Startup Current by up to 75%

The Micro-Air Flex is the #1 Bluetooth Enabled AC Soft Starter on the Market Today!

The Micro-Air EasyStart Flex reduces startup power by up to 75%, letting you run your home AC on generators, limited power sources, or solar systems - for units up to 6 tons (72,000 BTUs). Compatible with top HVAC brands like Carrier, Trane, and Rheem, the Flex soft starter ensures smooth, quiet compressor startups, dramatically reduces maintenance costs, and protects your equipment with intelligent fault detection.

Price: $354.00

In Stock / SHIPS TODAY!

UPGRADE YOUR AC TODAY
Micro-Air EasyStart Flex Features
REDUCE STARTUP CURRENT BY 75%

WHY CHOOSE THE MICRO-AIR EASYSTART FLEX

Run on Smaller Generators

Save thousands on equipment costs by running your AC on a smaller generator during power outages. Perfect for emergency power solutions.

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Reduced Wear and Tear

Specialized fault checks not found in any other soft starter provide further protection for your compressor motor, ensuring its longevity.

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Silent Operation

Reduces the loud startup noise of the AC motor. Sleep with less noise and stay cool all through the night.

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Universal Compatibility

One-size-fits-all solution for home AC units up to 6 tons (72,000 BTUs). Works with both 115V and 230V systems.

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Emergency Readiness

Critical for those with medical needs during power outages. Keep your essential cooling systems running when you need them most.

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Bluetooth Technology

Built-in diagnostics with the free smartphone app (iPhone and Android). Troubleshoot issues remotely without disassembling components.

HOW THE EASYSTART FLEX WORKS

1

Adaptive Learning Technology

The EasyStart Flex uses patent-pending learning technology to adjust to your specific AC unit. It gradually increases power to the compressor, reducing startup current by up to 75%.

2

Smart Optimization

After just a few startup cycles, the intelligent software learns and optimizes the perfect startup sequence for your specific AC system, ensuring maximum efficiency and protection.

3

Advanced Protection

The advanced intelligent short-cycle delay timer provides the necessary delay to prevent damage while the precise overcurrent and stall detection protect your compressor from harmful low-voltage conditions.

HOW THE EASYSTART FLEX COMPARES

Features Micro-Air EasyStart Flex Hard Start Kits Other Soft Starters
Startup Current Reduction Up to 75% 15-25% 40-60%
Generator Compatibility
Adaptive Learning Technology
Bluetooth Diagnostics
Fault Protection
Compatible with AC Systems up to 6 Tons
DIY Installation
Warranty 2 Years 1 Year 1-2 Years

CUSTOMER EXPERIENCES

★★★★★

Installed on my 9-year-old 3-ton Carrier AC. AC showed 83 amps startup before installation. First start with EasyStart was 33 amps, and by the sixth start, it was down to 21.5 amps and whisper quiet!

Bill S.
Verified Customer
★★★★★

I'm glad to have found this product on RVupgrades, not just because of the competitive price, but to support a company directly rather than through Amazon!

Steve V.
Verified Customer
★★★★★

Wish I would have bought this sooner. Went from 110 amps startup to 28 amps. Makes startup of compressor completely smooth..

Brent
Verified Customer

FREQUENTLY ASKED QUESTIONS

Will installing a Flex-Soft Starter void my AC warranty?

No, installing the Flex-Soft Starter will not void your AC manufacturer's warranty. It actually helps protect your equipment by reducing strain on the compressor and electrical components. Many HVAC professionals recommend soft starters for system protection.

What size generator can I use with my AC after installing a Flex-Soft Starter?

With the Flex-Soft Starter installed, most 2-3 ton residential AC units can run on a 3000-3500W generator. For larger 4-5 ton units, a 4000-5000W generator is typically sufficient. This represents a significant reduction from the 6000-8000W generators normally required.

How difficult is installation?

Most homeowners with basic electrical knowledge can install the Flex-Soft Starter in 60-90 minutes. We provide detailed step-by-step instructions, wiring diagrams for common AC models, and installation videos. If you're not comfortable with electrical work, any HVAC technician can install it in about 30 minutes.

Will this work with my specific AC model?

The Flex-Soft Starter is compatible with virtually all single-phase AC systems up to 6 tons (72,000 BTUs), including all major brands like Carrier, Trane, Rheem, Lennox, Goodman, York, and more. It works with both 115V and 230V systems. If you have questions about your specific model, please contact us 866-332-7881 or [email protected].

What's the difference between RV models and home models?

While the core technology is similar, our home models are specifically designed for larger residential HVAC systems up to 6 tons, while RV models are optimized for smaller rooftop units. Home models also include enhanced surge protection features and are designed for permanent outdoor installation with greater weatherproofing.

Generator Sizing Guide to Run Your Home AC Home A/C Size EasyStart Model EasyStart Flex Amps Indoor & Outdoor Fan Running Watts Minimum Generator Size (Rated Watts)** Tons BTU's Model Running Starting Amps* Without With EasyStart EasyStart 1-1/2 18000 ASY-3⁠98-X1S-BL 9 48 2.5 2760 7400 3100 2 24000 ASY-3⁠98-X1S-BL 12 55 2.5 3480 8500 3600 2-1/2 30000 ASY-3⁠98-X1S-BL 14 65 3 4080 10000 4200 3 36000 ASY-3⁠98-X1S-BL 16 80 3 4560 12300 5200 3-1/2 42000 ASY-3⁠98-X1S-BL 18 95 3.5 5160 14700 6100 4 48000 ASY-3⁠98-X1S-BL 22 110 4 6240 17000 7100 5 60000 ASY-3⁠98-X1S-BL 26 130 5 7440 20100 8400 6 72000 ASY-3⁠98-X1S-BL 32 150 5.5 9000 23100 9700 * Fan amps may vary ** Generator size may vary based on generator specifications Key Benefits with EasyStart: • Reduce starting amps by up to 75% • Use smaller, more affordable generators

UPGRADE YOUR AC SYSTEM TODAY

Join thousands of homeowners who have transformed their AC systems with the Flex-Soft Starter. Run your AC anywhere, anytime, on less power.

$354.00
In Stock

Trusted by homeowners nationwide with over 40,000 successful installations

UL Listed and Approved
Two Year Limited Warranty
Made in the USA