---
product_id: 666792622
title: "EasyStart FLEX 398 - Bluetooth Soft Start Kit for Home Air Conditioner, RV & Commercial Use, Works with Generators, Reduces Power Surge, Efficient Start-Up - Up to 6 Tons"
brand: "micro-air"
price: "3227 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Micro Air"
url: https://www.desertcart.pl/products/666792622-easystart-flex-398-bluetooth-soft-start-kit-for-home-air
store_origin: PL
region: Poland
---

# 75% startup current reduction Bluetooth app control Ultra-quiet 35 dB operation EasyStart FLEX 398 - Bluetooth Soft Start Kit for Home Air Conditioner, RV & Commercial Use, Works with Generators, Reduces Power Surge, Efficient Start-Up - Up to 6 Tons

**Brand:** micro-air
**Price:** 3227 zł
**Availability:** ✅ In Stock

## Summary

> ❄️ Chill smarter, start smoother — never sweat a power surge again!

## Quick Answers

- **What is this?** EasyStart FLEX 398 - Bluetooth Soft Start Kit for Home Air Conditioner, RV & Commercial Use, Works with Generators, Reduces Power Surge, Efficient Start-Up - Up to 6 Tons by micro-air
- **How much does it cost?** 3227 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/666792622-easystart-flex-398-bluetooth-soft-start-kit-for-home-air)

## Best For

- micro-air enthusiasts

## Why This Product

- Trusted micro-air brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Surge Slayer:** Slash startup current by up to 75%, protecting your generator and electrical system from overload.
- • **Compressor Lifesaver:** Intelligent fault detection and short-cycle delay extend your AC’s lifespan while preventing flickering lights.
- • **Smart & Silent Start:** Bluetooth-enabled control with whisper-quiet 35 dB operation ensures seamless, noise-free AC startups.
- • **Versatile Compatibility:** Works flawlessly with residential, commercial, RV AC units up to 6 tons and supports generators & inverters.
- • **DIY-Friendly Compact Design:** 50% smaller enclosure fits tight spaces and installs in minutes with clear video guidance—no pro needed.

## Overview

The EasyStart FLEX 398 is a cutting-edge Bluetooth soft start kit designed for AC units up to 6 tons, reducing startup current by 75% to protect generators and electrical systems. Its compact, DIY-friendly design fits tight spaces and operates quietly at 35 dB. Compatible with residential, commercial, and RV air conditioners, it features intelligent fault detection and short-cycle delay to extend compressor life and prevent light flicker, making it the ultimate upgrade for efficient, reliable cooling even during power fluctuations.

## Description

Buy MICRO-AIR EasyStart FLEX 398 - Bluetooth Soft Start Kit for Home Air Conditioner, RV & Commercial Use, Works with Generators, Reduces Power Surge, Efficient Start-Up - Up to 6 Tons: Air Conditioners - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Performs as Advertised! Good Value! Easy Install. Real World Performance! - EDIT: I installed this item one week ago today. It has worked as advertised. While returning from running errands this morning I received a notification on my phone that the power was out at the house. The first real world opportunity to see if this piece of kit is worthy of the cheddar. I arrived home in about 10 minutes and confirmed much of the neighborhood was out. It's hot, DAMNED HOT, outside today and this will never do! It took about 15 minutes total time to get the gennie up and running and arrive at the moment of truth. I flipped the breaker for the gennie and powered the panel, then energized the furnace circuit (Ecobee thermostat controls), then energized the A/C circuit and waited. It took right at 2 minutes for the Ecobee to come online (wifi is on UPS) and call for cool. The fan on the A/C started first, seconds later the compressor started, the gennie shouldered the load like a CHAMP, and the A/C was running! I energized the rest of the circuits according to my emergency power plan and monitored cycle performance in cool air conditioned comfort. "I love it when a plan comes together!", Colonel John "Hannibal" Smith. Purchase with confidence! OE Review... Meets and exceeds expectations. Simple, straightforward four wire installation. Easy enough for a handy DIYer. They even have a short YouTube instruction video! I purchased this so I could have AC when the power goes out. I have a 4 ton HVAC that drew 106a inrush before installation. Too much for a modest portable generator in a power outage. After 6 learning cycles it only pulls 26.xxa! A bona fide 75% reduction in startup draw! It’s also much quieter now too. I highly recommend!
Review: Excellent kit!!! - First delivery was excellent, same day, had a problem with thermal overload and compressor was making a horrible sound, having experience in AC, we had power surge a few times that week, I decided to purchase this soft start kit, it's excellent investment and this being a 5 tonnes unit as well, the kit is easy to install, great video on how to install, took me 15 minutes,and it works magnificent, no hard start and no more dimming lights, great value for your money and adding more years to the life of your compressor and actually save on your light bill. Highly recommended, my personal opinion is that every home owner should have this installed on there AC unit 👍

## Features

- ADVANCED MICROAIR TECHNOLOGY: Micro-Air EasyStart Flex is the most advanced and versatile soft starter, designed for all sizes of residential AC units up to 6 tons (72,000 BTUs). It provides a controlled and gentle startup, reducing mechanical stress and extending the lifespan of your air conditioning system. This air conditioner soft start technology enhances performance and reliability for both home and commercial use.
- IDEAL FOR HOME AND COMMERCIAL USE: Perfect for residential and commercial settings, the EasyStart Flex HVAC soft start kit efficiently supports AC systems up to 6 tons, making it versatile for various applications. Designed for compatibility with generators and inverters, it provides an easy start for home AC systems, reducing startup current by up to 75%. This makes it a valuable solution for optimizing performance in areas with limited or unstable power sources.
- COMPATIBILITY WITH GENERATORS: Specially engineered to work with generators, inverters, and limited utility power, this soft start kit for home air conditioner reduces startup current by up to 75%, ensuring smooth AC operation even in off-grid or power-limited locations. This Easy Start flex home ac soft starter is compatible with 2-stage compressors and heat pump units, making it a versatile choice for diverse AC configurations.
- QUIET AND SMART PROTECTION: This soft starter for air conditioner reduces startup noise and prevents light flickering, creating a quieter, more comfortable environment. The intelligent fault detection and short-cycle delay timer of this ac softstart protect your compressor motor from low-voltage damage and excessive wear, extending the life of your aire acondicionado unit and delivering peace of mind.
- COMPACT DESIGN FOR EASY INSTALLATION: With a 50% smaller enclosure size, this ac soft start kit for home is built to fit into tight or confined spaces without compromising performance. This versatile ac unit soft start kit offers a simplified setup suitable for both DIY enthusiasts and professionals, making installation quick and straightforward.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DJDJ87LR |
| Additional Features | Portable |
| Air Conditioner Application | residential, commercial, recreational vehicle |
| Best Sellers Rank | #4,929 in Automotive ( See Top 100 in Automotive ) #6 in RV Heating, Ventilation & Air Conditioning |
| Brand | MICRO-AIR |
| Brand Name | MICRO-AIR |
| Capacity | 6 Tons |
| Compressor Type | reciprocating |
| Control Method | App |
| Controller Type | Bluetooth Control |
| Customer Reviews | 4.6 out of 5 stars 677 Reviews |
| Efficiency | High |
| Form Factor | Portable |
| Installation Type | DIY |
| Inverter Type | No Inverter |
| Is Outdoor Unit Required | No |
| Is Product Cordless | No |
| Item Dimensions D x W x H | 9"D x 4"W x 3"H |
| Manufacturer | MicroAir |
| Model Name | MicroAir Flex 398 |
| Model Number | 398 |
| Noise | 35 Decibels |
| Power Source | Corded Electric |
| Product Dimensions | 9"D x 4"W x 3"H |
| Special Feature | Portable |
| Start Year | 2039 |
| Start year | 2039 |
| UPC | 850049469241 |
| Voltage | 230 Volts |
| Warranty Type | Limited |
| Wattage | 21093 watts |
| Window Opening Maximum Width | 4 Inches |
| Window Opening Minimum Height | 16 Inches |
| Window Opening Minimum Width | 24 Inches |

## Product Details

- **Brand:** MICRO-AIR
- **Capacity:** 6 Tons
- **Form Factor:** Portable
- **Model Name:** MicroAir Flex 398
- **Noise Level:** 35 Decibels
- **Power Source:** Corded Electric
- **Product Dimensions:** 9"D x 4"W x 3"H
- **Special Feature:** Portable
- **Start year:** 2039
- **Voltage:** 230 Volts

## Images

![EasyStart FLEX 398 - Bluetooth Soft Start Kit for Home Air Conditioner, RV & Commercial Use, Works with Generators, Reduces Power Surge, Efficient Start-Up - Up to 6 Tons - Image 1](https://m.media-amazon.com/images/I/61chwhRm6JL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Performs as Advertised! Good Value! Easy Install. Real World Performance!
*by M***E on July 15, 2025*

EDIT: I installed this item one week ago today. It has worked as advertised. While returning from running errands this morning I received a notification on my phone that the power was out at the house. The first real world opportunity to see if this piece of kit is worthy of the cheddar. I arrived home in about 10 minutes and confirmed much of the neighborhood was out. It's hot, DAMNED HOT, outside today and this will never do! It took about 15 minutes total time to get the gennie up and running and arrive at the moment of truth. I flipped the breaker for the gennie and powered the panel, then energized the furnace circuit (Ecobee thermostat controls), then energized the A/C circuit and waited. It took right at 2 minutes for the Ecobee to come online (wifi is on UPS) and call for cool. The fan on the A/C started first, seconds later the compressor started, the gennie shouldered the load like a CHAMP, and the A/C was running! I energized the rest of the circuits according to my emergency power plan and monitored cycle performance in cool air conditioned comfort. "I love it when a plan comes together!", Colonel John "Hannibal" Smith. Purchase with confidence! OE Review... Meets and exceeds expectations. Simple, straightforward four wire installation. Easy enough for a handy DIYer. They even have a short YouTube instruction video! I purchased this so I could have AC when the power goes out. I have a 4 ton HVAC that drew 106a inrush before installation. Too much for a modest portable generator in a power outage. After 6 learning cycles it only pulls 26.xxa! A bona fide 75% reduction in startup draw! It’s also much quieter now too. I highly recommend!

### ⭐⭐⭐⭐⭐ Excellent kit!!!
*by A***R on September 6, 2025*

First delivery was excellent, same day, had a problem with thermal overload and compressor was making a horrible sound, having experience in AC, we had power surge a few times that week, I decided to purchase this soft start kit, it's excellent investment and this being a 5 tonnes unit as well, the kit is easy to install, great video on how to install, took me 15 minutes,and it works magnificent, no hard start and no more dimming lights, great value for your money and adding more years to the life of your compressor and actually save on your light bill. Highly recommended, my personal opinion is that every home owner should have this installed on there AC unit 👍

### ⭐⭐⭐⭐⭐ Awesome unit if you want off-grid air conditioning capability!
*by D***S on August 21, 2025*

This thing is awesome! Installing it took less than 10 minutes after watching Hutch Mountains install video, and my air conditioner starts up so much smoother now! I am currently running most of my house off of 3 Ecoflow delta pro ultras and about 15kw worth of solar panels. With this unit I was finally able to move my A/C system over to solar power. My air conditioner initially required almost 120a to start up which was overloading all three of those units. I found that the start/run capacitor in the unit had started failing. I replaced that and it dropped the startup down to around 60a. This Soft Start system cut that even further down to about 18a. With this unit you could actually use a generator to power your home AC if needed. It also features a bluetooth diagnostic system to let you know if something is wrong with the unit during startup. I've noticed that my running wattage is about the same (maybe slightly less), but starting surge is about 1/3 of what it was. So I would think this should cut a little bit out of my power bill. It is a little on the expensive side, but for something that is made in the US (and made with high quality components, it has nippon capacitors installed in it!), I was willing to spend a little more. It is also a fairly small unit that is weather sealed. It will mount just about anywhere with the included double sided tape, or you can repurpose the panel screws that covers the relay/capacitors on the unit like I did. The front cover is clear plastic, which allows you to see the internal status LED's for a quick check to see what the unit is doing.

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-19*