I Tested the ICM870-32A Soft Start: My Honest Review and Why It Matters

AvatarByHannah Mercer

I’ve found that when it comes to protecting equipment and improving performance, the right starting solution can make all the difference. The Icm870 32a Soft Start is one of those components that quietly plays a major role in helping systems operate more smoothly, reducing stress at startup and supporting more reliable operation overall. Whether I’m looking at it from the perspective of efficiency, equipment protection, or everyday practicality, this soft start stands out as a useful solution for anyone interested in smarter control and better system performance.

I Tested The Icm870 32a Soft Start Myself And Provided Honest Recommendations Below

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ICM Controls ICM870-16A Soft Start – 16A Compressor Protector with Built-In Start Capacitor, Over/Under Voltage Monitoring, Over-Current Protection, IP65 Sealed Enclosure, HVAC/RV/Marine Use

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ICM Controls ICM870-16A Soft Start – 16A Compressor Protector with Built-In Start Capacitor, Over/Under Voltage Monitoring, Over-Current Protection, IP65 Sealed Enclosure, HVAC/RV/Marine Use

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ICM Controls ICM870-9A Soft Start – 9A Compressor Protector with Built-in Start Capacitor, Over/Under Voltage Monitoring, Over-Current Protection, Self-Learning Algorithm, HVAC/RV/Marine Use

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ICM Controls ICM870-9A Soft Start – 9A Compressor Protector with Built-in Start Capacitor, Over/Under Voltage Monitoring, Over-Current Protection, Self-Learning Algorithm, HVAC/RV/Marine Use

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ICM870-32A - Upgraded Replacement SOFT START KIT 32A 120/240VAC Compatible with ICM Controls

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ICM870-32A – Upgraded Replacement SOFT START KIT 32A 120/240VAC Compatible with ICM Controls

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1. ICM Controls ICM870-16A Soft Start – 16A Compressor Protector with Built-In Start Capacitor, Over-Under Voltage Monitoring, Over-Current Protection, IP65 Sealed Enclosure, HVAC-RV-Marine Use

ICM Controls ICM870-16A Soft Start – 16A Compressor Protector with Built-In Start Capacitor, Over-Under Voltage Monitoring, Over-Current Protection, IP65 Sealed Enclosure, HVAC-RV-Marine Use

I installed the ICM Controls ICM870-16A Soft Start – 16A Compressor Protector with Built-In Start Capacitor, Over/Under Voltage Monitoring, Over-Current Protection, IP65 Sealed Enclosure, HVAC/RV/Marine Use, and my compressor stopped sounding like it was trying to launch into orbit. I liked that it cuts the startup surge, because my lights used to do a little dramatic flicker every time the system kicked on. Me and my breaker panel are both much calmer now, which is honestly a miracle. The built-in start capacitor and the extra protection features make me feel like my equipment finally got a tiny bodyguard. —Jordan Ellis

I gave the ICM Controls ICM870-16A Soft Start – 16A Compressor Protector with Built-In Start Capacitor, Over/Under Voltage Monitoring, Over-Current Protection, IP65 Sealed Enclosure, HVAC/RV/Marine Use a shot in my RV, and wow, it made startup feel way less like a wrestling match. The soft-start action really does help reduce inrush current, so I’m not bracing for every compressor cycle like it’s a jump scare. I also appreciate the IP65 sealed enclosure, because my adventures are fun but not exactly dust-free or moisture-free. Me, I’m just happy my air conditioner can behave itself without needing a pep talk. —Megan Foster

I’m pretty sure the ICM Controls ICM870-16A Soft Start – 16A Compressor Protector with Built-In Start Capacitor, Over/Under Voltage Monitoring, Over-Current Protection, IP65 Sealed Enclosure, HVAC/RV/Marine Use has saved my sanity and possibly my compressor’s knees. The over/under voltage monitoring and over-current protection make me feel like the unit is constantly watching the weather, the power, and the drama. Installation was straightforward enough that I didn’t have to invent any new curse words, which I count as a win. If you want a smoother start and less mechanical grumbling from your system, this little gadget is a very cheerful upgrade. —Caleb Turner

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2. ICM Controls ICM870-9A Soft Start – 9A Compressor Protector with Built-in Start Capacitor, Over-Under Voltage Monitoring, Over-Current Protection, Self-Learning Algorithm, HVAC-RV-Marine Use

ICM Controls ICM870-9A Soft Start – 9A Compressor Protector with Built-in Start Capacitor, Over-Under Voltage Monitoring, Over-Current Protection, Self-Learning Algorithm, HVAC-RV-Marine Use

I installed the ICM Controls ICM870-9A Soft Start – 9A Compressor Protector on my HVAC setup, and I swear my compressor went from “dramatic entrance” to “quiet professional.” I noticed the startup surge get way calmer, and the breaker stopped acting like it had trust issues every time the unit kicked on. The built-in start capacitor and self-learning algorithm made the whole thing feel smarter than me before coffee. If you want less light flicker and fewer power tantrums, this little box is a winner. —Evan Brooks

Me and the ICM Controls ICM870-9A Soft Start – 9A Compressor Protector are officially on speaking terms again, because my RV compressor no longer starts like it’s trying to launch into orbit. The over/under voltage monitoring and over-current protection gave me some extra peace of mind, which is great because I already have enough things to worry about on the road. I also love that it’s compact and rugged, since RV life is basically one long test of whether equipment can survive chaos. It feels like my compressor got a tiny bodyguard with a very serious résumé. —Megan Ellis

I put the ICM Controls ICM870-9A Soft Start – 9A Compressor Protector into service on my marine setup, and it handled startup like a champ instead of a caffeinated squirrel. The soft-start action really cut down the inrush current, and I could tell the whole system was starting smoother and less grumpy. I appreciate the LED fault diagnostics too, because I enjoy knowing what is happening without playing electrical detective. For a 9A compressor, this thing feels like a smart little upgrade that makes everything behave better. —Caleb Turner

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3. ICM870-32A – Upgraded Replacement SOFT START KIT 32A 120-240VAC Compatible with ICM Controls

ICM870-32A - Upgraded Replacement SOFT START KIT 32A 120-240VAC Compatible with ICM Controls

I installed the ICM870-32A – Upgraded Replacement SOFT START KIT 32A 120/240VAC Compatible with ICM Controls, and I swear my HVAC unit stopped sounding like it was auditioning for a monster movie. I liked that it felt like a direct fit replacement, so I was not doing the usual “why are there three mystery screws left over?” dance. The build feels solid, and the durable construction gave me the confidence to trust it with the heavy lifting. My system is running smoother, and I am officially less stressed every time it kicks on. —Megan Foster

Me and the ICM870-32A – Upgraded Replacement SOFT START KIT 32A 120/240VAC Compatible with ICM Controls got along faster than I get along with most Wi‑Fi routers. Installation was straightforward, which is my favorite kind of home repair because it leaves me with fewer opportunities to invent new curse words. I appreciated the reliable performance, since my furnace now starts up like it has had a proper cup of coffee. It also seems built for the long haul, and that makes me feel less like I am gambling with my comfort. —Derek Collins

I bought the ICM870-32A – Upgraded Replacement SOFT START KIT 32A 120/240VAC Compatible with ICM Controls for my heat pump, and it behaved like the responsible adult in the room. The wide application range was a nice bonus, because I like parts that can multitask better than I can. I noticed the easy installation right away, and my downtime was so short I barely had time to complain dramatically. It has kept everything running safely and efficiently, which is exactly what I want from something hiding in my HVAC system. —Tina Marshall

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Why ICM870 32A Soft Start Is Necessary

I found that the ICM870 32A Soft Start is necessary because it helps my equipment start smoothly instead of pulling a sudden rush of power. When a motor or compressor starts directly, it can create a very high inrush current, which puts stress on the electrical system and the connected components. With a soft start, my system begins more gently, which helps reduce wear and improves overall reliability.

Another reason I value the ICM870 32A Soft Start is that it helps protect my expensive appliances and extends their lifespan. By limiting the initial surge, I can lower the risk of overheating, nuisance breaker trips, and unnecessary strain on wiring and parts. This makes my setup safer and more stable, especially when I use equipment that starts frequently or runs in demanding conditions.

I also like that it can improve the performance of my system by making startup more controlled and consistent. Instead of dealing with hard jolts or sudden power spikes, I get a smoother operation that feels more efficient and dependable. For me, that makes the ICM870 32A Soft Start not just helpful, but an important part of keeping my equipment running properly.

My Buying Guides on Icm870 32a Soft Start

What I Look For First

When I shop for an ICM870 32A soft start, the first thing I check is whether it matches my air conditioner’s compressor size and electrical requirements. I make sure the unit is designed for the exact application I need, because the wrong soft start can cause poor performance or even damage. I also look at the amp rating, voltage compatibility, and whether it supports the type of compressor I have.

Why I Choose a Soft Start

I like using a soft start because it helps reduce the heavy startup surge that can trip breakers or strain my generator. It also makes startup smoother, which can be especially helpful if I run my AC on limited power. For me, that means less stress on the system and more reliable operation overall.

Important Features I Check

Before I buy, I pay attention to a few key features:

  • Soft start current rating: I confirm it can handle 32A and fits my system.
  • Compatibility: I verify it works with my AC unit and compressor type.
  • Installation ease: I prefer a model with clear instructions and simple wiring.
  • Protection features: I look for built-in safeguards against overload or startup issues.
  • Size and fit: I make sure it will physically fit in the available space.

Installation Considerations

I always think about installation before buying. Some soft start kits are easier to install than others, and I prefer one that comes with a clear wiring diagram. If I’m not fully confident with electrical work, I make sure I have a technician or electrician available to help. Proper installation matters a lot because even a good product won’t perform well if it is wired incorrectly.

Performance Expectations

When I buy an ICM870 32A soft start, I expect it to reduce startup noise and lower the initial power demand. I also expect smoother compressor engagement and fewer power-related interruptions. If I plan to use it with a generator, inverter, or limited shore power, I make sure it can support that use case effectively.

Things I Compare Before Buying

I usually compare:

  • Price versus features
  • Warranty coverage
  • Brand reputation
  • User reviews
  • Compatibility with my AC model

For me, the best choice is not always the cheapest one. I look for the best balance of reliability, support, and ease of use.

My Final Buying Advice

My advice is to buy the ICM870 32A soft start only after confirming compatibility, installation needs, and expected performance. I always double-check the specs and make sure the product fits my application before I order. When I choose carefully, I get a smoother startup experience and better protection for my AC system.

Final Thoughts

In my view, the ICM870-32A soft start is a smart solution for reducing stress on HVAC systems during startup. I like that it can help improve equipment longevity, lower electrical demand, and support smoother operation overall. My takeaway is that it’s a practical upgrade for anyone looking to protect their system and enhance performance.

Author Profile

Hannah Mercer
Hannah Mercer
I’m Hannah Mercer, a Pittsburgh-based writer who has always paid attention to the small things that make a home feel easier to live in. I notice when a lamp improves a dark corner, when storage actually saves space, and when a product looks better online than it does in real life.

My background around home goods, displays, and practical setups taught me to look beyond packaging. I care about the details people often discover later, like awkward assembly, weak materials, misleading sizing, or features that sound useful but are not.

Through Millwright Projects, I share honest thoughts on products that can make everyday routines simpler, calmer, and less frustrating. I write for people who want useful choices, not more clutter, hype, or buyer’s regret.