--- product_id: 733409325 title: "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" brand: "micro-air" price: "SAR 3944" currency: SAR in_stock: true reviews_count: 5 url: https://www.desertcart.com.sa/products/733409325-micro-air-easystart-flex-398-bluetooth-soft-start-kit-home store_origin: SA region: Saudi Arabia --- # 75% startup current reduction Bluetooth app control Ultra-quiet 35 dB startup 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 **Brand:** micro-air **Price:** SAR 3944 **Availability:** ✅ In Stock ## Summary > ⚡ Start Smart, Stay Cool — The Future of AC Power Management ## Quick Answers - **What is this?** 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 by micro-air - **How much does it cost?** SAR 3944 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/733409325-micro-air-easystart-flex-398-bluetooth-soft-start-kit-home) ## 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 - • **Compact Yet Mighty:** 50% smaller enclosure fits tight spaces, perfect for DIY or professional installs. - • **Power Surge? Not Here!:** Slash startup current by up to 75%, protecting your AC and generator from overload. - • **Built to Last & Protect:** Intelligent fault detection and short-cycle delay extend your AC’s lifespan and reliability. - • **Whisper-Quiet Operation:** Experience near-silent startups at just 35 decibels—comfort without the noise. - • **Smart Control at Your Fingertips:** Bluetooth-enabled app lets you monitor and optimize your AC startup effortlessly. ## Overview The MICRO-AIR EasyStart FLEX 398 is a cutting-edge Bluetooth soft start kit designed for residential, RV, and commercial AC units up to 6 tons. It reduces startup current by up to 75%, minimizing mechanical stress and power surges, while its compact design and smart fault protection ensure easy installation and long-term reliability. Compatible with generators and inverters, it delivers quiet, efficient startups and extends the lifespan of your air conditioning system. ## Description Micro-Air EasyStart FLEX is the most advanced and versatile soft starter designed for all sizes of RV and Automotive AC units up to 6 tons (72,000 BTUs). This powerful soft start kit for home air conditioner optimizes AC performance by providing a controlled, gentle startup, reducing mechanical stress, and extending the lifespan of your air conditioning system. Ideal for both home and commercial applications, the EasyStart Flex uses adaptive learning and advanced technology, making it a reliable choice for a variety of setups. Compatible with generators, inverters, and limited utility power sources, the Micro Air Soft Start Kit for AC reduces startup current by up to 75%, ensuring efficient AC operation even in areas with unstable or restricted power supply. Whether you’re in an off-grid location or managing limited power, this a/c soft start kit provides essential support to keep your AC running smoothly. Equipped with intelligent protection features, including fault detection and a short-cycle delay timer, the EasyStart Flex safeguards your compressor motor from potential damage due to low-voltage conditions. This added protection not only prevents excessive wear but also prolongs your AC unit’s life, ensuring sustained performance. Additionally, the EasyStart Flex minimizes startup noise and light flickering, creating a quieter and more comfortable environment for uninterrupted cooling, especially useful for nighttime or sensitive applications. With a 50% smaller enclosure, this compact soft starter easily fits into tight or confined spaces without sacrificing performance. Compatible with single-phase motors, TXVs, EEVs, fixed metering devices, 2-stage compressors, and heat pump units, the EasyStart Flex is a versatile, one-size-fits-all solution for diverse air conditioning systems. Experience enhanced efficiency, quiet operation, and lasting protection with the Micro-Air EasyStart Flex for your home or business AC. Review: I run two geothermal heat pumps - one 6 tonne and the other is 3 tonne. No more harsh startup sounds or light flickers on startup. On first startup in learn mode saw 66% reduction in startup current. Review: Very pleased! I do suggest changing your capacitor when you add anything like this to your HVAC system. They do go bad just like light bulbs or batteries as an example. Also make sure all connections are secure as this will cause failure on many components. Installation ease will vary on units. Following the instructions is a must. If you’re not sure have a licensed electrician/HVAC technician do this for you. My 4 ton unit had a 98 amp inrush, now after it’s 26 amp after EasyStart learning curve (chose to do the 7 starts). This is an efficient energy savings. Had no problems with my Heat pump prior to installation of the EasyStart except with my 13000 watt generator. The generator will now start my system from eco mode. Size of the EasyStart forced me to mount externally. If you mount it with screws, exercise caution so you don’t drill or run a screw into any components behind it. Please don’t add this to your unit if you have a problem as this is a start assist device. It will probably help to some degree but can’t fix preexisting problems and will have the potential to damage your EasyStart. When the unit starts now on commercial power, I have no flickering lights in my house (been that way since it was installed). Slightly lowered my running amps. So, between inrush and running amps I believe it’s a good value for the money. Take amperage readings before and after to see for yourself. Downloaded the app and compared its readings to Fluke meter. Pretty much spot on. Time will tell the rest. Hope this helps with your decision to purchase. ## 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, RV, Commercial | | BEE Star Rating | 5 Star | | Best Sellers Rank | #89,314 in Automotive ( See Top 100 in Automotive ) #123 in RV Heating, Ventilation & Air Conditioning | | Brand Name | MICRO-AIR | | Capacity | 6 Tons | | Compressor Type | reciprocating | | Control Method | App | | Controller Type | Bluetooth Control | | Customer Reviews | 4.6 4.6 out of 5 stars (694) | | 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 | 22.9D x 10.2W x 7.6H centimeters | | Manufacturer | MICRO-AIR | | Model Name | MicroAir Flex 398 | | Model Number | 398 | | Noise | 35 Decibels | | Power Source | Corded Electric | | Start Year | 2039 | | UPC | 850049469241 | | Voltage | 230 Volts | | 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 - **Product dimensions:** 22.9D x 10.2W x 7.6H centimeters - **Special features:** Portable - **Start year:** 2039 ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/61chwhRm6JL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on 17 January 2026* I run two geothermal heat pumps - one 6 tonne and the other is 3 tonne. No more harsh startup sounds or light flickers on startup. On first startup in learn mode saw 66% reduction in startup current. ### ⭐⭐⭐⭐⭐ Review *by R***R on 2 March 2026* Very pleased! I do suggest changing your capacitor when you add anything like this to your HVAC system. They do go bad just like light bulbs or batteries as an example. Also make sure all connections are secure as this will cause failure on many components. Installation ease will vary on units. Following the instructions is a must. If you’re not sure have a licensed electrician/HVAC technician do this for you. My 4 ton unit had a 98 amp inrush, now after it’s 26 amp after EasyStart learning curve (chose to do the 7 starts). This is an efficient energy savings. Had no problems with my Heat pump prior to installation of the EasyStart except with my 13000 watt generator. The generator will now start my system from eco mode. Size of the EasyStart forced me to mount externally. If you mount it with screws, exercise caution so you don’t drill or run a screw into any components behind it. Please don’t add this to your unit if you have a problem as this is a start assist device. It will probably help to some degree but can’t fix preexisting problems and will have the potential to damage your EasyStart. When the unit starts now on commercial power, I have no flickering lights in my house (been that way since it was installed). Slightly lowered my running amps. So, between inrush and running amps I believe it’s a good value for the money. Take amperage readings before and after to see for yourself. Downloaded the app and compared its readings to Fluke meter. Pretty much spot on. Time will tell the rest. Hope this helps with your decision to purchase. ### ⭐⭐⭐⭐⭐ Review *by A***R on 6 September 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 👍 ## Frequently Bought Together - 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 - Amlits 300 PCS Insulated Wire Electrical Connectors - Butt, Ring, Spade, Quick Disconnect - Crimp Terminals Connectors Assortment Kit - Klein Tools 3005CR Wire Crimper Tool, Ratcheting Insulated Terminal Crimper for 10 to 22 AWG Wire --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/733409325-micro-air-easystart-flex-398-bluetooth-soft-start-kit-home](https://www.desertcart.com.sa/products/733409325-micro-air-easystart-flex-398-bluetooth-soft-start-kit-home) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-04-23*