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Easy Start Flex LP
4.8 Rating From 205 Verified Reviews
Your Generator
Is Big Enough.
Your AC Startup Isn't.
The Device That Reduces AC Startup Current by Up to 75% — So a Portable Generator Can Actually Run It
- Reduces AC startup current by up to 75%, making it possible to run your AC on a portable generator or inverter
- Designed for all single-phase residential and commercial AC units up to 6 tons (72,000 BTUs)
- Adaptive learning technology optimizes to your specific unit automatically
- Compatible with portable generators, inverters, and limited utility power
Order Now and Save →
Ships within 48 hours • Free on orders $200+
"We were without power for 11 days after Ian. Same 5500-watt generator ran the AC the whole time after installing this. I've already told everyone on my street."
James R. ✓ Verified Purchaser — Port Charlotte, FL
🇺🇸 Made in the USA
⭐ 4.8 Rating — 205 Verified Reviews
⚡ Up to 75% Startup Reduction
🔬 Patent-Pending Technology
✅ 100% QC Tested Before Shipping
📦 Free Shipping on Orders $200+
Homeowners in Storm-Prone Areas Are Running Their AC on Generators They Already Own
After power outages, homeowners fire up their backup generators — only to find their AC won't start. The problem isn't the generator's running capacity. It's the startup surge the AC demands for the first few seconds. The EasyStart Flex reduces that surge by up to 75%, allowing a much smaller generator to handle the job.
205 Verified Reviews
Real installs from homeowners across storm-prone communities.
Real installs from verified customers. More photos added weekly.
One Device.
Compatible with Virtually Every Setup.
Whether you're running on a portable generator, a whole-home standby, or an inverter — AC startup surge is the same problem. The EasyStart Flex is designed for all single-phase residential AC units up to 6 tons and is compatible with generators, inverters, and limited utility power.
Portable Generator
Reduces the startup current your generator needs to handle
Whole-Home Standby
Reduces startup surge on whole-home backup systems
Inverter
Compatible with inverters and limited utility power
Heat Pump
Compatible with 2-stage systems and heat pump units
Compressor Protection
Overcurrent and stall detection on every startup
Any AC Up to 6 Tons
All single-phase residential and commercial AC units
*Startup reduction varies by unit size and condition.
The Generator You Already Own May Be Enough
Without a soft starter, starting a 3-ton AC requires a generator in the 14kW–22kW range — costing $5,000 to $9,000. With the EasyStart Flex reducing startup current by up to 75%, the same AC can run on a fraction of that capacity. One homeowner made the switch to a 7,500-watt portable costing $1,200–$1,600. The AC started every time.
Without EasyStart Flex
14kW–22kW
Generator required to start a 3-ton AC
~$5,000–$9,000
Before installation costs.
With EasyStart Flex
7,500W
Portable generator — what one homeowner used instead
~$1,200–$1,600
Documented real-world installation. The AC started every time.
EasyStart Flex
$389
One-time installation
Reduces AC startup current by up to 75%.
Made in the USA by Micro-Air, LLC.
Made in the USA by Micro-Air, LLC.
Generator figures based on documented real-world installation. Results vary by AC unit and generator model.
Is $389 Worth It?
Here's what the problems EasyStart Flex addresses actually cost.
⚡
14kW–22kW
Generator required to
start a 3-ton AC
~$5,000–$9,000
start a 3-ton AC
~$5,000–$9,000
🔋
7,500W Portable
What one homeowner
used instead with EasyStart
~$1,200–$1,600
used instead with EasyStart
~$1,200–$1,600
EasyStart Flex
✅
$389
One-time installation.
Made in the USA.
Made in the USA.
Generator figures based on documented real-world installation. Results vary by AC unit and generator model.
Not All Soft Starters Are Equal
There are $40 knockoffs on Amazon. Before you go that route, here's what you're actually comparing.
| EasyStart™ Flex | Generic / Knockoff | |
|---|---|---|
| Manufactured in | 🇺🇸 USA | Overseas |
| Startup current reduction | Up to 75% | Unverified / fixed |
| Adaptive learning technology | ✅ | ❌ |
| Bluetooth diagnostics app | ✅ | ❌ |
| Fits all AC units up to 6 tons | ✅ | May require sizing |
| Compressor fault protection | ✅ | ❌ |
| 100% QC tested before shipping | ✅ | ❌ |
| US-based customer support | ✅ | ❌ |
| Warranty | See microair.net | 90 days or none |
| Recommended by HVAC techs | ✅ | ❌ |
The EasyStart Flex is engineered and 100% quality control tested in the USA by Micro-Air, LLC. Not all soft starters are equal.
Get the EasyStart Flex →Don't Wait for the Next Storm.
Your Generator Is Ready.
Is Your AC?
Power outages don't send advance notice. When a hurricane, ice storm, or grid failure hits, the EasyStart Flex is the difference between an AC that starts — and one that trips your generator every time it tries. Install it before the season, not during the outage.
Why HVAC Technicians Recommend the EasyStart Flex
With 205 verified reviews from homeowners and HVAC professionals, the EasyStart Flex is built around a simple principle: make limited power sources work for your AC.
Up to 75% Startup Current Reduction
Reduces AC startup current by up to 75%, allowing operation with limited power sources including portable generators and inverters.
One-Size-Fits-All Solution
Designed for all single-phase residential and commercial AC units up to 6 tons (72,000 BTUs).
Bluetooth Enabled
Real-time diagnostics and performance data via free iOS and Android app.
Active Compressor Protection
Precise overcurrent and stall detection protects your compressor from harmful sustained or abrupt low-voltage conditions.
Made in the USA
Designed and manufactured in the USA by Micro-Air, LLC. 100% quality control tested before leaving the facility.
Straightforward DIY Installation
Designed for DIY installation with step-by-step instructions included. Can also be installed by a qualified electrician or HVAC technician.
Technical Specs
Compatible with all single-phase residential and commercial AC units and heat pumps up to 6 tons. Works with TXVs, EEVs, and fixed metering devices. Compatible with 2-stage compressors and heat pump units.
Includes: EasyStart Flex unit, mounting hardware, wiring harness, Bluetooth module, installation hardware, and user manual.
- Capacity Up to 6 tons (72,000 BTUs)
- Startup Current Reduction Up to 75%
- Compatible Systems All single-phase residential and commercial AC / heat pump
- Compatible Metering TXVs, EEVs, fixed metering devices
- Connectivity Bluetooth (free iOS & Android app)
- Enclosure Water-resistant, UV-protected — designed for outdoor use
- Power Sources Portable generators, whole-home generators, inverters, limited utility power
- Origin Made in the USA by Micro-Air, LLC
60-Day Return Policy
Install it. Run your AC on the generator you already own. If the EasyStart Flex doesn't do what we say it does, return it within 60 days for a full refund — no hoops, no hassle.
- Guaranteed to work with your system
- Friendly and fast support team
- 60-Day Return Policy
Ships within 48 hours • Free on orders $200+
60
Day
Return Policy
Complete Your Setup
The EasyStart Flex is the foundation. These bundles add the next layer of protection and readiness for your backup power system.
Bundle
EasyStart Flex + EasySurge Guardian
Pair the EasyStart Flex with the EasySurge Guardian HVAC Surge Protector for complete protection — soft-start on every cycle, surge protection against grid spikes and lightning events.
Bundle
EasyStart Flex + Generator Load Testing Kit
Install the EasyStart Flex, then verify your generator can handle the load with the Generator Load Testing Kit. Know exactly what your backup system can handle before you need it.
See What EasyStart Flex Owners Are Saying
205 Verified Reviews from Homeowners and HVAC Professionals
119 Amps Down to 34
"Very easy to order online and delivery was on time. With the instructions and drawing it was an easy installation. The inrush current was reduced from 119 to 34 amps. I am very satisfied with this product!"
David B. ✓ Verified PurchaserLoud Startup Noise — Completely Gone
"Our initial inrush current measured 77 amps and after installing it dropped to 25 amps. Our system is less than a year old but the loud startup noise was truly unacceptable — and now it's completely gone."
James B. ✓ Verified Purchaser20-Minute Install. Noticed It After 5 Starts.
"Install was easy and only took 20 minutes. Watched videos on the Micro-Air website which helped a lot. Noticed a significant difference after 5 starts — the compressor startup noise was much less than before. Would highly recommend."
John B. ✓ Verified Purchaser55% Reduction — Generator Test Coming
"So far my EasyStart Flex has lowered my startup by 55%. I am anxious to see its performance when it gets hotter and I need to run my AC using my generator. Very impressed so far."
John M. ✓ Verified PurchaserWorks Amazing. Definitely Notice a Difference.
"Recently installed this on my home AC. Works amazing and definitely notice a difference. Highly recommend."
William H. ✓ Verified PurchaserNow Running on a Much Smaller Generator
"My 4-ton Trane AC was pulling 119 inrush amps on startup. The unit dropped that to about 23. With the EasyStart I can now run my home on a much smaller generator, more than offsetting the cost of the unit."
Jeff D. ✓ Verified Purchaser
4.8 Rating From 205 Reviews
Don't Find Out During the Outage
- Ships within 48 hours
- 60-Day Return Policy
- Works on Any Residential AC Up to 6 Tons
Order Now and Save →
Ships within 48 hours • Free on orders $200+
Frequently Asked Questions
What is the EasyStart Flex?
+An electronic soft starter designed to reduce the high inrush current associated with starting single-phase AC motors. It gradually increases the voltage applied to the motor, reducing startup stress on the motor and electrical system and allowing your AC to operate on limited power sources such as a portable generator, inverter, or restricted utility power.
How much does it reduce startup current?
+Up to 75%.
What power sources is it compatible with?
+Portable generators, whole-home standby generators, inverters, and limited utility power.
What AC units does it work with?
+All single-phase residential and commercial AC units up to 6 tons (72,000 BTUs), including 2-stage compressors, heat pumps, TXVs, EEVs, and fixed metering devices.
Do I need an electrician to install it?
+The EasyStart Flex is designed for straightforward DIY installation with step-by-step instructions included. It can also be installed by a qualified electrician or HVAC technician.
How does the Bluetooth feature work?
+Download the free app on iOS or Android for real-time diagnostics, performance data, firmware updates, and to re-configure the device for a new AC unit — all without disassembling anything.
Where is it made?
+Designed and manufactured in the USA by Micro-Air, LLC.
Order Now and Save →
Ships within 48 hours • Free on orders $200+
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