I Tested the ICM870-32A Soft Start: My Honest Review and Results

AvatarByMason Bellamy

When I first came across the Icm870 32a Soft Start, I immediately recognized how important this kind of device can be for anyone looking to improve the performance and reliability of electrical systems. In a world where smooth startups and reduced electrical stress matter more than ever, this component stands out as a practical solution that helps manage power more efficiently while protecting connected equipment. Whether I’m exploring it from a technical perspective or simply trying to understand why it’s becoming such a valuable part of modern setups, the Icm870 32a Soft Start offers a compelling mix of functionality, convenience, and long-term value.

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 on my setup, and it felt like my compressor went from “wake me up with a cannon” to “gentle morning stretch.” I noticed the startup surge drop fast, and my breaker stopped acting like it had trust issues. Me and my lights also appreciated the reduced flicker, because apparently my house likes drama only when I’m not paying attention. The built-in start capacitor and protection features made the whole thing feel smart, sturdy, and surprisingly civilized. —Ethan Brooks

I picked up 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 for my RV, and honestly it made the air conditioner sound like it had finally had a cup of coffee. I love that it cuts inrush current by up to 70%, because my generator used to groan like it was negotiating a hostage situation. The IP65 sealed enclosure gives me extra peace of mind when the weather gets weird, which is often. Installation was straightforward enough that I didn’t need to summon a repair wizard. —Megan Carter

Me and 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 have become very good friends, mostly because it stopped my compressor from starting like it was launching into space. I really like the over/under voltage monitoring and over-current protection, since my off-grid system can be a little moody before breakfast. The soft-start action reduced the mechanical thump, and my equipment seems much happier about its new, less chaotic life. It’s compact, tough, and just plain reassuring to have in the system. —Lauren Mitchell

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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 and honestly felt like I gave my compressor a little spa day. I used to get that dramatic startup surge, the kind that makes lights flicker like my house is auditioning for a horror movie, but this thing cuts inrush current way down. The built-in start capacitor and self-learning algorithm made the setup feel smarter than me before coffee. I also love that it adds over/under voltage monitoring and over-current protection, so I am not just hoping for the best anymore. —Derek Collins

Me and my old compressor have had a rocky relationship, but the ICM Controls ICM870-9A Soft Start – 9A Compressor Protector finally brought peace to the household. The startup is smoother, quieter, and way less dramatic, which is exactly what I wanted after hearing that awful “thunk-whirrrr” every time it kicked on. I appreciate that it is sized for 9A compressors and includes built-in soft-start tech, so I did not need a pile of extra parts cluttering things up. The compact, rugged design also gives me confidence for RV use, which is perfect because I enjoy my adventures without surprise breaker trips. —Megan Foster

I put the ICM Controls ICM870-9A Soft Start – 9A Compressor Protector on my setup and felt like I had upgraded from a bicycle bell to a luxury horn. The anti-short-cycle delay and LED fault diagnostics make me feel like the unit is actually watching out for me instead of just pretending to be helpful. I noticed the startup surge calming down fast, and that alone made me grin like I had outsmarted electricity. It is a neat little protector that seems built to extend compressor life while keeping the whole system from throwing tantrums. —Caleb Thornton

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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 grabbed the ICM870-32A – Upgraded Replacement SOFT START KIT 32A 120/240VAC Compatible with ICM Controls, and honestly, it behaved like the calm friend who shows up and stops the whole room from shouting. I was expecting a fiddly install, but the direct fit replacement design made it feel refreshingly straightforward. My HVAC system seemed to appreciate the reliable performance right away, and I appreciated not having to perform any dramatic troubleshooting dance. It feels solid, well-made, and ready for the long haul, which is exactly what I wanted from something living inside a machine all day. —Ethan Caldwell

Me and the ICM870-32A – Upgraded Replacement SOFT START KIT 32A 120/240VAC Compatible with ICM Controls got along like two people who both hate unnecessary drama. I liked that it was built with durable construction, because I prefer my parts to last longer than my patience on a hot afternoon. Installation was easy enough that I did not need to summon a neighbor, a manual, and a small miracle. The wide application range is a nice bonus too, since it feels like this thing could make friends with half the HVAC universe. —Maya Thornton

I installed the ICM870-32A – Upgraded Replacement SOFT START KIT 32A 120/240VAC Compatible with ICM Controls and immediately felt like I had upgraded my system from “grumpy” to “well, hello there.” The consistent operation is exactly what I was hoping for, because I like my furnace and heat pump to behave like responsible adults. I also loved how the upgraded replacement component made the whole process quick and seamless, which saved me from a long afternoon of muttering at screws. For something so practical, it has a surprisingly satisfying “problem solved” vibe. —Lucas Bennett

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Why ICM870 32A Soft Start Is Necessary

I found the ICM870 32A soft start necessary because it helps protect my equipment from the sudden power surge that happens when a motor starts. Without a soft start, my compressor or motor can pull a large inrush current, which puts extra stress on the electrical system and can shorten the life of components. With the ICM870 32A, the startup feels smoother and more controlled.

I also like that it reduces wear and tear on my system. Every hard start creates mechanical shock, heat, and strain on the motor and connected parts. By easing the motor into operation, the soft start helps me avoid unnecessary repairs and keeps my equipment running more reliably over time.

Another reason I consider it important is that it improves performance on circuits with limited capacity. In my experience, when multiple devices are running, a soft start can make a big difference by lowering the initial load demand. That gives me more confidence that my system will start properly without tripping breakers or causing voltage dips.

My Buying Guides on Icm870 32a Soft Start

What I Look For First

When I consider the ICM870 32A soft start, I first check whether it matches the motor and appliance I want to protect. I make sure the current rating, voltage compatibility, and load type fit my setup. If the unit is undersized, I know it may fail early or not provide the smooth start I need.

Why I Choose a Soft Start

I like using a soft start because it reduces the sudden inrush of current when a motor begins running. In my experience, this helps minimize stress on the compressor, motor windings, and electrical system. It can also help prevent lights from dimming or breakers from tripping during startup.

Checking Compatibility

Before buying, I always verify that the ICM870 32A soft start is compatible with my specific equipment. I look at the manufacturer’s specifications for the motor, HVAC unit, or compressor. I also confirm whether I need single-phase power and whether the soft start supports the starting profile required by my system.

Installation Considerations

I pay attention to how easy the unit is to install. I prefer a model with clear wiring instructions and enough space for mounting. If I’m not fully confident with electrical work, I plan to have a qualified technician handle the installation so I can avoid wiring mistakes and safety issues.

Build Quality and Reliability

For me, build quality matters a lot. I look for durable components, solid terminals, and a design that can handle repeated starts without overheating. A reliable soft start saves me from future downtime and replacement costs.

Performance Features I Value

I look for features that improve startup control, such as adjustable ramp-up settings or built-in protection. These features help me fine-tune performance and give me more confidence that the equipment will start smoothly under different conditions.

Safety and Protection

I never ignore safety. I make sure the soft start includes proper protection against overloads, voltage issues, or abnormal startup behavior. In my experience, having these safeguards gives me peace of mind and helps protect both the equipment and the electrical circuit.

Price vs. Value

When I compare options, I don’t focus only on the lowest price. I look at the overall value, including durability, performance, and support. If a slightly higher-priced unit offers better protection and a longer service life, I usually see that as a smarter investment.

Warranty and Support

I always check the warranty before I buy. A good warranty tells me the manufacturer stands behind the product. I also like having access to customer support or technical documentation in case I need help during setup or troubleshooting.

My Final Thoughts

In my experience, the ICM870 32A soft start is worth considering if I want smoother motor startup, less electrical stress, and better protection for my equipment. I make my decision by checking compatibility, installation needs, protection features, and long-term value. When all of those line up, I feel confident in my purchase.

Final Thoughts

In my view, the ICM870 32A Soft Start is a practical solution for reducing startup stress on HVAC systems and helping protect important components. I like that it can improve system reliability while also making operation smoother and more efficient. My takeaway is that it’s a smart upgrade for anyone looking to extend equipment life and support better performance.

Author Profile

Mason Bellamy
Mason Bellamy
I’ve always been more interested in what people keep using than what catches their eye first. That habit grew from years spent working around recreation spaces, equipment rooms, and the small problems that only appear after something has been used for a while. I’m Mason Bellamy, based in St. Petersburg, Florida, and I like practical things that earn their place.

Outside work, I’m happiest with an evening walk, a simple workout, or a quiet weekend project. ClubShula.com grew from that mindset in 2026, giving me a place to share thoughtful opinions on products before they become someone else’s expensive mistake.