720. Deep Dive: Is an EasyStart Soft Starter Really Worth It?
30 Sept 2026 · 23 min
Derek Cole breaks down whether MicroAir's EasyStart soft-starter is worth buying for your AC. It reduces startup current by up to 75% and can make backup generators viable, but won't extend compressor life, cut your electric bill, or replace a surge protector. It makes sense if you're in a hurricane zone needing generator support or hate noisy starts.
Chapters
I want you to picture something for a second. It is like the dead of summer, right? You're sitting by your window, maybe reading a book, just enjoying the quiet.
Right. And it's completely peaceful.
Exactly. And then right outside, there is this sudden, almost violent electrical event. The lights in your living room dim for a split second. There's a heavy shutter that actually rattles the window glass, and then a low, steady hum takes over.
Yeah. And if you are like most homeowners, you probably don't even blink.
No, not at all.
I mean, it's just your central air conditioning compressor turning on. We have become completely desensitized to it. We treat that sudden, massive exertion of, you know, mechanical and electrical energy as background noise.
Just because it happens, like, 10 times a day during July and August.
Exactly.
But behind that heavy shudder is this fascinating hidden world of electrical strain and mechanical engineering. And that is exactly what we are exploring today on this deep dive.
It really is a wild process when you look closely at it.
Our guide for this deep dive is an expert breakdown written by Derek Cole. Now, he's the general manager of Simmons 1 Hour Heating and Air.
And his background, uh, it's really crucial context for how we approach this information. We aren't just reading a slick marketing brochure handed down from a manufacturer.
Right, no corporate fluff here.
No, exactly. We are analyzing insights from someone with over 25 years in the HVAC industry. I mean, he worked his way up from turning wrenches out in the field to general management.
Wow. So he really knows the hardware.
Oh, absolutely.
Yep.
And his specific location actually won the 2024 Franchise of the Year for the entire 1 Hour system across the US.
So we are looking at real field-tested expertise.
Exactly.
So our mission for this deep dive is to cut through all the heavy HVAC jargon and figure out exactly what an AC soft Yeah, specifically a device called the EasyStart. Right, the EasyStart. We are going to find out how it fundamentally changes the physics of your air conditioner, and most importantly, we want to help you figure out if it is actually worth your hard-earned money.
Which is the big question for everyone, really.
Okay, let's unpack this. What is the core problem with how our air conditioners currently turn on?
Well, to understand the problem, we really have to look at the compressor itself. The compressor is the heart of your entire refrigeration system.
Pumping all that cold air, basically?
Well, technically, its job is to pump chemical refrigerant through hundreds of feet of copper tubing. But the fundamental issue here is just basic physics. Specifically, uh, inertia.
Right. An object at rest really wants to stay at rest.
You nailed it. Getting that heavy, mechanical compressor motor from sitting completely still to spinning at thousands of revolutions per minute.
In a fraction of a second, right?
Exactly. In a fraction of a second. It requires a massive instantaneous spike in electrical current.
Because it's a heavy piece of metal that is also trying to push highly pressurized gas, that sounds like a lot of resistance.
It is. That is the exact dual burden it faces. The motor has to overcome the static friction of its own heavy internal components, Plus the immense back pressure of the refrigerant in the lines. Yeah, that's rough. So to break that inertia, the system just demands an incredible influx of power from your home's electrical grid, just for a split second.
Right, to get things moving.
Yeah. Once it breaks free and gets up to speed, it actually settles down into a much lower, steady operating current. But that initial startup phase is intense.
Really intense.
If you walk outside and look at the metal box sitting in your yard, There is a data plate with a bunch of numbers, and you will see the letters LRA.
Oh, I've seen that plate. LRA stands for locked rotor amps, right?
Spot on. And if we break that term down, it paints a very literal picture. Locked rotor refers to that exact microsecond when the motor's rotor is entirely stationary.
Just sitting there, totally stuck.
Effectively locked in place by its own weight and the pressure of the system. So, the utility grid has to surge a massive amount of amperage into the motor windings to create a magnetic field strong enough to violently break that locked state.
So that LRA number isn't what it costs to run the AC all day?
Not at all.
Yeah.
The LRA number on your unit's data plate does not represent the electricity your AC uses while it runs. It represents the absolute ceiling of that brief, massive starting event.
That initial demand is so huge that you can literally feel it inside the house.
Oh yeah, totally.
I mean, it pulls so much current away from the rest of the electrical panel that the lights actually dim. Whenever I see the lights flicker in my house just before the AC kicks in, my mind instantly goes to a cliché scene in a horror movie.
A horror movie. That's funny.
Yeah. You know the trope, right? Right before the poltergeist enters the room, all the lamps dim and the power drains from the house. Yeah, it's exactly like that.
It definitely has a cinematic feel to it. I'll give you that. But really, the utility grid is essentially dumping raw amperage into your side yard to force that motor to spin.
Okay, but I have to play devil's advocate here for a second.
Sure, go for it.
My air conditioner and, you know, millions of others across the country have been doing this exact thing, pulling this massive LRA spike every summer for years, and they haven't exploded.
That's true.
So if this is how the engineers designed it to work, why should we care about fixing it now?
This raises an important question, and it is a central theme in Derek Cole's analysis. Yes, This massive power draw is technically normal.
Right.
The copper windings in the motor and the breakers in your panel are sized to handle it. However, normal does not necessarily mean optimal.
Ah, okay. I see where you're going.
Every single time that compressor slams on, it puts immense recurring stress on your home's electrical infrastructure and on the mechanical bearings inside the compressor itself.
It's like slamming a door 10 times a day versus Closing it gently.
Exactly. We are talking about the difference between a machine merely surviving a harsh, brute-force daily routine and actually optimizing that routine so the machine operates gracefully.
Well, if we are talking about optimization, that brings us to the specific technology Derek Cole focuses on, the EasyStart Flex, manufactured by a company called MicroAir.
Right, which is categorized as a soft starter.
But how does it actually change the physics of that startup sequence we just talked about?
Okay, so instead of allowing the contactor to just snap shut and open the floodgates for that massive LRA current to hit the motor all at once—
Which is the poltergeist moment.
Right, exactly. Instead of doing that, the EasyStart is a microprocessor that intercepts that demand. It electronically manages the entire startup process by throttling the voltage.
There was a detail in the source material about this that really caught my attention. It mentioned that the device actually goes through a learning phase.
Yes. It isn't just a generic resistor that blindly restricts power.
That's so wild to me.
What's fascinating here is the algorithmic approach it takes. When an HVAC technician installs the EasyStart, it doesn't just work perfectly on the first try.
It has to figure things out first.
Yeah, it requires a series of 5 to 7 test starts. During those initial starts, the internal microprocessor is actively monitoring the electrical characteristics of that specific compressor.
Oh, wow!
It measures how much current the motor is drawing and exactly how many milliseconds it takes to reach full operating speed.
So it is essentially mapping the motor's physical limitations in real time.
Exactly.
It calculates the absolute minimum amount of electricity required to get that specific rotor moving without stalling it out.
Yeah, it creates a highly customized electrical ramp. Once it has learned the compressor's unique profile, it uses solid-state electronic switches to slowly feed voltage into the motor.
Slowly being like a fraction of a second, right?
Right. But slowly compared to an instant flood. It feeds it over a fraction of a rather than hitting it with the full brunt of the grid instantly.
And the results are pretty crazy.
According to the data from MicroAir, by electronically managing this curve, the EasyStart can reduce the compressor's starting current by up to 75%.
Cutting the required starting power by 75% is staggering.
It's a massive reduction.
Derek Cole uses an analogy in his article that makes the mechanical reality of this very easy to visualize.
Oh, the truck analogy. I love this one.
Yeah. He says to imagine getting into your pickup truck, putting it in park, and stomping the gas pedal absolutely all the way to the floorboard.
Just redlining it.
Exactly. The engine is screaming. And then while the RPMs are totally maxed out, you just drop the transmission into drive.
It sounds incredibly destructive when you frame it in an automotive context.
Oh, it would be awful. The tires would squeal, your neck would snap back, and you would hear the transmission groan under the sheer violence of that transition.
But that is exactly how a standard air conditioner starts.
It is. The utility grid drops the hammer, and the compressor is forced to catch up instantly.
Yeah.
The easy start, on the other hand, is the equivalent of putting the truck in drive first, smoothly rolling onto the accelerator, and naturally getting the vehicle up to highway speed.
The analogy highlights the mechanics perfectly because the end result in both scenarios is identical. Both methods get the truck moving, And both methods get your AC running.
It's just about how you get there.
Right. The Easy Start doesn't change how the air conditioner cools your home once it is up and running. It purely exists to remove the mechanical and electrical violence from the startup sequence.
Yeah.
You are eliminating that shockwave.
Okay. This all makes logical sense, but I have a point of confusion here. Sure.
What's up?
So a few years ago, I had an HVAC technician out to do some maintenance, and he told me my unit was struggling to start. So he charged me to install what he called a starter kit.
Oh, okay.
If I already have one of those, did I basically just buy an older version of this EasyStart technology?
That is a very common point of confusion for homeowners, and it is vital to distinguish between the two. Your technician installed a hard start kit.
Oh, a hard start kit.
Yeah. An EasyStart is a soft starter. They are completely different devices built on almost opposite electrical philosophies.
How so? I mean, they both have start in the name, so I assume they solve the exact same problem.
They address the same moment in time, the startup phase, but they do it in reverse ways. HVAC professionals have used hard start kits for decades.
Right.
A hard start kit is essentially a large capacitor paired with a relay. Think of a capacitor as a temporary battery. It stores up a significant electrical charge and then dumps it all at once directly into the compressor's start winding.
Oh, I see. So instead of throttling the power back like the easy start, it is actually hitting the motor with an even bigger hammer to force it past that locked rotor phase faster.
Exactly.
It is like adding a nitrous oxide boost to the truck we were just talking about.
That is a highly accurate way to look at it, honestly.
Yeah?
A hard start kit embraces the violence.
Wow. Embraces the violence.
It acknowledges that the startup is stressful, so it provides a raw jolt of extra torque To get the stressful period over with in the shortest time possible.
Okay, I get it now.
Yeah, whereas a soft starter, like the EasyStart, uses microprocessors to throttle and reduce the peak electrical current. One pushes harder, the other eases in.
Which explains why people are suddenly so interested in soft starters. And it goes way beyond just stopping the lights from flickering in the living room.
Oh, definitely.
Reducing that power spike by 75% opens up a massive opportunity for homeowners when it comes to backup power.
Yes. Derek Cole is based in North Carolina, a region that frequently deals with hurricanes, severe thunderstorms, and tropical systems.
Right, bad weather country.
When grid power fails for days at a time, standby and portable generators become a necessity, not just a luxury.
And when someone goes out to buy a generator after a storm, the absolute first question they ask the guy at the hardware store is, can this run my central air conditioning?
Right, because nobody wants to sweat through a power outage in August.
Exactly!
But this is where homeowners run into the frustrating mathematics of Generator power. When you look at a generator's specs, you have to account for running watts and starting watts. A portable generator might produce enough continuous power to easily keep a 3-ton air conditioner running once the compressor is already spinning. The steady running amperage is relatively low.
But the generator completely chokes when the thermostat clicks on because the AC asks for that massive pedal-to-the-metal LRA spike.
Yes, exactly. The generator's alternator physically cannot produce the sudden surge of current required to break the compressor's inertia, so the generator's internal breaker trips to protect itself.
So, the starting demand is the bottleneck?
The starting demand is the primary bottleneck. However, if you install an EasyStart and use its algorithmic ramping to slash that starting current requirement by up to 75%, the generator mathematics change entirely.
Wow!
Running a central air conditioning system on backup power transforms from an expensive impossibility into a very realistic scenario.
Okay, here's where it gets really interesting. Does this mean I can bypass the expensive whole-home generator system entirely? Can I just buy this EasyStart gadget, hook up my little $400 camping generator, and suddenly power my entire 4-ton central air system?
I have to heavily qualify that idea, and Derek Cole is very deliberate about setting realistic expectations in his guide here. The short answer is absolutely not.
Aw, man. Too good to be true.
The EasyStart is a brilliant piece of engineering, but it does not defy the laws of physics.
So, I can't cheat the system. I still have to do the math on my electrical load.
You still have to do the math. Installing a soft starter does not automatically grant any generator the ability to run any air conditioner.
That makes sense.
You still have to evaluate the continuous running capacity of your specific generator against the running load of your HVAC equipment while also accounting for the refrigerator, the lights, and whatever else you've plugged in.
Right, the fridge still needs power.
Exactly. The Easy Start removes the massive startup penalty, which is usually the biggest barrier to entry, but if your generator is fundamentally too small to handle the continuous running load of the compressor and the blower fan, a soft starter will not save you.
I am glad we clarified that because whenever a new piece of technology gains traction for solving a major annoyance, The hype cycle begins.
Oh, the hype cycle is real.
People start treating it like a magic bullet that can cure every ailment a house might have. Since we are already looking at what it can't do for generators, let's look at some of the other promises floating around and separate the facts from the marketing fiction.
I think that's a great idea. It is an investment, and part of being a responsible homeowner is knowing exactly what you are paying for and more importantly, Which you're not paying for.
Let's start with the longevity myth. This is probably the biggest assumption people make. If I remove all this mechanical violence from the startup sequence, will installing an EasyStart guarantee my compressor lasts an extra 5 or 10 years?
Derek Cole is wonderfully transparent about this in the source material. As a guy who sells these units, it would be very easy for him to imply it extends the life of the system, but he responsibly refuses to promise that.
That's pretty cool of him.
It is. He points out that compressors fail for dozens of reasons that have absolutely nothing to do with electrical startup surges.
Right, like a soft starter isn't going to stop a copper line from vibrating against a bracket and rubbing a hole in the metal.
Exactly. It cannot stop refrigerant leaks.
Yeah.
It cannot prevent the motor from overheating due to a clogged air filter. And it cannot fix a system that was poorly installed in the first place.
There are just too many variables.
Yeah. Nobody can responsibly guarantee that a compressor will never fail.
But I mean, it isn't entirely without protective benefits, right? The microprocessor has to be doing something to look out for the system.
Right. If we connect this to the bigger picture, the EasyStart Flex does provide legitimate active protection features.
Okay.
Because it is constantly monitoring the electrical waveform, it has built-in safeguards against compressor stalls, severe overcurrent situations, and short cycling. Which is when the AC tries to turn on and off too rapidly.
Which is terrible for the motor.
It's terrible. And undeniably, reducing the violent torque of startup 10 times a day does reduce mechanical wear and tear. It's a highly beneficial environment for the motor. It just isn't a guarantee of immortality.
Okay, let's tackle myth number 2, the electric bill myth.
Ah, yes.
If this device is successfully reducing my massive power spike by up to 75%, I should see a noticeable drop in my monthly utility The answer is no, and the reason comes down to how utility companies actually bill you.
The EasyStart is exclusively managing a starting event that lasts for mere milliseconds.
It happens in the blink of an eye!
Exactly! It is so incredibly fast that your utility meter barely registers the difference in overall kilowatt-hours. The power company charges you for the sheer volume of electricity consumed over long periods of time.
So a microsecond of savings Doesn't add up to much.
Right. The Easy Start does not magically alter the fundamental efficiency of the compressor for the hours and hours it operates continuously throughout the hot afternoon.
So, if I want to save money, this isn't the gadget.
If a homeowner's primary goal is to lower their summer utility bills, Derek Cole advises looking elsewhere. You need to address duct leakage, upgrade your attic insulation, adjust your thermostat settings, or ensure your condenser coils are clean. Yeah, the Easy Start is strictly about the quality of the startup, not the efficiency of the runtime.
That brings us to the third myth, and this one seems to stem from a misunderstanding of electrical terms: the surge protector myth.
This one comes up a lot.
I've actually had people say to me, I already had an electrician install a whole home surge protector on my breaker panel, so I don't need a soft starter.
That is a fundamental misunderstanding of what these 2 distinct devices do. They are solving 2 entirely different electrical hazards.
Derek Cole includes a brilliant little mnemonic device in his guide to help homeowners keep this straight.
He really does.
He says, Surge protection helps protect against what is coming in. The EasyStart manages what happens when the compressor turns on.
That is the perfect way to contextualize it. A whole-home surge protector is a defensive shield. It guards your sensitive electronics and your HVAC equipment against transient overvoltage events originating from the outside.
Like lightning strikes.
Exactly. Lightning strikes, transformer blowouts, or grid fluctuations traveling in through the utility lines. The EasyStart, on the other hand, is an internal management system.
It's working from the inside out.
It solely regulates the electrical demand created internally when your AC tries to turn on. Depending on your situation, you might need a surge protector, you might need an EasyStart, you might need both, or you might need neither.
But one absolutely does not replace the function of the other.
No, not at all.
So, I have to step back and play the role of the highly skeptical consumer for a minute here.
Yeah, lay it on me.
We've established that this device will not lower my monthly electric bill, and it does not come with a guarantee that my air conditioner will live forever. If I'm not saving money every month, why on earth is a general manager of an HVAC company recommending it?
The answer lies in Derek Cole's overarching business philosophy, which he outlines very clearly. He explicitly states that not every single air conditioner actually needs an EasyStart. Yeah, he writes, and I quote, Our job isn't to find another product to put on every air conditioner.
Which is an incredibly refreshing level of honesty from someone whose livelihood is based on selling HVAC products and services.
It really builds trust because the value of the device is rooted in the honesty of its specific application, rather than relying on fearmongering or universal scare tactics.
So, it's not a mandatory upgrade?
Right. If a homeowner doesn't own a backup generator, If they never notice their lights dimming, and if their system starts quietly and runs smoothly, Cole would likely advise them to spend their home improvement budget elsewhere.
But if you do live in hurricane territory and you want to ensure your portable generator can actually push your house through a multi-day power outage without tripping breakers—
Then it's a lifesaver.
Or if you are just tired of your house rattling like a haunted mansion every time the thermostat clicks, it solves that exact problem beautifully.
It is all about matching the specific capabilities of the technology to the unique pain points of the homeowner. It is an elegant algorithmic solution to a very brute-force mechanical problem.
So, what does this all mean? Let's bring all these technical concepts together. The core takeaway is that an air conditioning compressor requires a shockingly violent amount of energy just to break its own inertia.
That massive LRA spike on the data plate.
Right. It is the mechanical equivalent of slamming your truck's gas pedal to the floor before you even shift into drive.
And the EasyStart soft starter fundamentally changes that paradigm. By utilizing a microprocessor to learn your specific compressor's traits, it can electronically smooth out that voltage curve.
Easing it in.
Easing the motor up to speed and reducing the starting demand by up to 75%.
Which fundamentally changes the math if you rely on backup generator power. But as we've learned, It isn't a mandatory upgrade for every single home. Well, thank you for joining us today as we untangled this HVAC puzzle. The next time you are out in the yard, maybe take a quick peek at that data plate on the side of your AC unit and look for that LRA number. It will give you a profound new appreciation for just how hard that machine has to work every time you want to cool down the living room.
It is always fascinating to peel back the layers and understand the invisible mechanical forces at work in our own homes.
It definitely changes how you look at the appliances around you, and it leaves me with one final thought to ponder. If our air conditioners can now be equipped with microprocessors that learn, adapt, and electronically smooth out their massive power demands to operate more gracefully, well, what other massive brute force appliances in our homes are currently putting unnecessary strain on our local electrical grids simply because they haven't been taught how to start up smoothly? Think about the sheer mechanical violence of that AC shutter outside your window and wonder what else is hiding in plain sight, just waiting for a smarter way to turn on.
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