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SoftStartRV Soft Start for 2 Air Conditioner Setup - 1 Pair

SoftStartRV Soft Start for 2 Air Conditioner Setup - 1 Pair

Item # SSR44FR
Our Price: $698.00
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Reduce the startup power demand on your 2 air conditioner setup by up to 70 percent and eliminate that loud, clunking compressor noise. Start and run both ACs and other appliances without the fear of tripping a breaker or overloading your generator. 1-800-496-5010 to order SoftStartRV accessories and parts part number SSR44FR or order online at Free expert support on all SoftStartRV products. Guaranteed Lowest Price and Fastest Shipping for SoftStartRV Soft Start for 2 Air Conditioner Setup - 1 Pair. Accessories and Parts reviews from real customers.
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SoftStartRV Accessories and Parts - SSR44FR

  • RV Air Conditioners
  • Soft Start Kit
  • SoftStartRV

Reduce the startup power demand on your 2 air conditioner setup by up to 70 percent and eliminate that loud, clunking compressor noise. Start and run both ACs and other appliances without the fear of tripping a breaker or overloading your generator.


  • Soft starters reduce the power needed to start your RV's air conditioners for a more efficient operation
    • Designed and tested for all RVs and motorhomes
    • Perfect for boondocking or supplementing generator power in high altitudes
    • 1 Soft start controller required per AC unit
  • Allows you to run your ACs on a small generator or simultaneously with small appliances
    • Run 2 AC units on a 30-amp hookup
    • Run your electric water heater, coffee maker, and other appliances
  • Eliminates trailer shaking and loud, clunking start-up noise from your compressor
    • Won't jolt you awake in the middle of the night
  • Limits stress put on the motor, compressor, and drive train to extend the life of your ACs
    • Start capacitors control torque to ensure smoother starts and stops
  • Shows operation status and alerts you to potential faults using 3 diagnostic LEDs
  • Prevents overheating using an integrated bypass contactor
  • Resists vibration, flames, and is IP65-rated against dust and low-pressure water jet spray
  • Vertical-mount installation with included hardware
    • Pre-drilled holes and 3M adhesive backing allow for simple mounting


  • Application: single-phase air conditioner units
    • 110V: 1 - 1.5 HP
    • 220V: 1 - 3 HP
  • Dimensions: 6" long x 3" wide x 3" tall
  • Power consumption: less than 3 watts each
  • Nominal working voltage:
    • 110V: 90 - 135 VAC each
    • 220V: 187 - 266 VAC each
  • Maximum continuous current: 18 amps each
  • Current consumption: 48 milliamps each
  • Maximum surge current: 170 amps each
  • Operation hours: 45,000+ hours
  • Working temperature: -40 F to 185 F (-40 C to 85 C)
  • Weight: 2 lbs each
  • 2-Year limited warranty

Note: These units must be mounted vertically to prevent water or condensation from seeping into the internal components.

Don't get caught in the heat. The SoftStartRV kit is the perfect solution to quietly fire up your ACs with ease and run them more efficiently on those hot and humid days. Designed, engineered, and tested for all RVs, these small, lightweight soft starters reduce your AC's start-up power demand by 70%, allowing you to start up and run both your ACs while also running your electric water heater, coffee maker, and other appliances without the fear of tripping a circuit breaker or overloading your generator. Best of all, the SoftStartRV kit eliminates trailer shaking and that loud thumping and clunking in the middle of the night from your AC's compressor, giving you a smooth operation along with a cool, quiet night's sleep.

These handy devices let you ditch that large or 2nd generator, used to help power your ACs in high altitudes, for a single 2200-watt inverter generator that will start your ACs right up to keep you cool while boondocking at 6,000 to 8,000ft above sea level.

JP-M71E-PE11 SoftStartRV Soft Start for 2 Air Conditioner Setup - 1 Pair

Video of SoftStartRV Soft Start for 2 Air Conditioner Setup - 1 Pair

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for SoftStartRV 2 Air Conditioner Setup Soft Start Installation - 2021 Keystone Raptor 5W Toy Hauler

Hey guys, Kevin here with etrailer and today I'm gonna be showing you how to install the SoftStartRV Soft Start for 2 AC setup here on our 2021 Keystone Raptor Fifth Wheel Toy Hauler. As many of you already know, when your AC starts up, it has a huge wattage draw. And what that can do is whenever you're at a campsite and there's a bunch of other people that are all having their AC kick on at the same time, it can kind of overload the campground's electrical systems and then you can have stuff start to dim in your camper. Maybe your AC doesn't wanna fully kick on. It can actually end up damaging your AC, messing up your compressor and it's gonna cause a whole bunch of racket because your AC's really trying to work hard and it's just not getting the energy that it needs. So that's where these Soft Starts come into play, because what they're gonna do is they're gonna store energy in them so that you don't have to solely rely on that shore power to start your AC.

For our neighbor today, he wanted to add on a third AC unit, which I've already installed, back in our toy hauler section of our trailer. And with all of that being on a 50-amp service, it can be quite a bit much of a starting draw if all three ACs are kicking on at the same time. So that's why we went ahead and installed the two piece Soft Start kit for both our middle and our front AC, just so that when he does have those kick on, he doesn't have to worry about it trying to pull too much and blow a circuit or have any issues with anything else. I mean, he's got full-sized fridge in here, just like you'd see in your home. He's got all kinds of other electronics that are gonna be in use while he's camping, so, we don't wanna diminish that to where he's not gonna be able to have everything fully function.

And on top of that, it's gonna make this kick on a lot quieter. So, instead of it rattling, making a bunch of noise in the middle of the night, every time it's starting to kick on, it's just gonna quietly power on and do its job, and then shut back off once temperature is reached. As far as installation goes it is really simple but it can be confusing if you don't really work with wiring quite a bit. And, also, it can be a little bit dangerous just because you're gonna be up on the roof of your trailer. So, you're gonna wanna make sure that you take all the necessary safety precautions that you can, to make sure that there's no chance of you falling off of that trailer.

And then also, you're gonna wanna really look for that panel that we will talk about during the installation. That's gonna show you the model numbers so that you can find the correct wiring diagram. And then you're gonna wanna make sure that you can identify all of the capacitors that are already installed on your AC units, so that you properly replace each of those wires when you're adding in your Soft Start. So, right now, I've got our rear AC running and our front AC running. I'm gonna go ahead and turn on our main living area and you can see just how quiet this comes on instead of rattling.

So, just like that, no big shaking. A lot of times, especially when you're running on a generator, it'll really start to kind of rattle up on the roof 'cause it's really trying hard to kick on. Whereas with these Soft Starts, you hear, just, a kind of, like, almost sounds like a screw gun starting up. Just real faintly and then AC kicks right on. Which, another thing along with the generators, since we're dropping that starting wattage down by using these Soft Starts, you won't have to use as heavy-duty of a generator. Our trailer today has a onboard generator. It's heavy-duty enough for all three of these but it's not gonna have to work as hard. It's not gonna consume as much gas, so it's gonna end up saving our customer a whole lot more money over time. First step in our installation is gonna be removing our cover on our Coleman-Mach here. You can see there's gonna be two screws on the back of it and then two screws up top. So I'll wanna remove those and hang onto 'em. Once you have all those screws out, you can go ahead and pop up your cover. On this one, it does make it easier if you, kind of, pull each side evenly up. We'll set that aside. Now, there's gonna be a model number and that is going to tell you exactly which wiring diagram that you need to use. If you look at SoftStartRV's website, there's a gigantic list of different model numbers with all different instructions. On this specific one, I've already found where that's hidden. It's gonna be on this little panel right here. So, we're gonna pop out these screws. And this top one. That's gonna drop this panel out and we're gonna see all of our capacitors. So, right here's a little wiring diagram for the capacitors and in the bottom left corner there, you can see the model number and that's 1976-740. So, we'll take that number and we'll go to SoftStartRV's website, and pull up the correct wiring diagram. To make things easier, I'm also going to remove the three other screws that are in this top panel, just so I can pull it up and look down inside of here and get better access to make things easier. For those of you who don't regularly deal with this, it can be a little bit confusing, looking at this. So, if we look right here, we have a little circle with a rectangle coming off of it. That's our PTCR, and that is this little capacitor right here. An easy way to kind of tell exactly what's what is to look at what color wires are running which way. But you can see that this is our start capacitor. Up here is gonna be our run capacitor, and then, over here, is going to be the capacitor for our fan. So, our Soft Start has to be mounted vertical because they don't want any water getting up into the actual box itself. This box is resin-coated inside, so, there's no reason for you to ever open this up. You're not gonna be able to get to any components inside of it. If you ever had an issue, it was damaged, doesn't work anymore, then you just have to fully replace it. There is no repairing this. With our setup today, on this specific model, it is a little challenging to try and find a good spot for it, but I've already done one like this before. So, what I'm gonna do is mount it over here, on the back side of it. It does have double-sided tape. We'll pull off that backing to it, put it on here, and then use the self-tapping screws to fully mount it in place, just because all we have over here is styrofoam. I've already looked inside of this. There's no chance of me accidentally hitting the fan blades here at all. So, we don't have to worry about that. And then we're gonna route our wires over to our section right here, just because all those fan capacitors are enclosed. Some models, you'll kind of see, it's a little bit more open and easily accessible. This one's just real, real tight. Like I said, we'll just peel off that backing, and I'm gonna press that on there real good, and then shoot in some self-tappers. Now we can go ahead and just route our wiring over. I'm gonna snake it past our compressor here. And then we can start making our connections. So, because I didn't wanna peel off this sealant right here and try and trace my wires through there, I'd just gone ahead and drilled a hole. So I just started with a small drill bit, just because this is such a tight, enclosed area, and just, kind of, kept getting wider and wider. If you do this and you have that line for your compressor right in the way, you definitely wanna be especially careful. If you nick that at all, your whole AC system is going to be trash because you can't replace this. From there, we're gonna go ahead, we're gonna grab our blue wire and we'll pass it through our hole. And then, I'm gonna take some needle-nose pliers, I'm gonna pull off this white wire. I'm gonna make sure that we note exactly where that's placed because we will be putting another wire in its place in just a second. We'll pull that back. And in your kit, there are gonna be a bunch of different terminals, so there'll be spade terminals that you can swap that on with. But, I'm just gonna go ahead and cut this off and use a butt connector, and I don't ever have to worry about the connection not being good enough between these two wires. So, I'm gonna have to stick my butt connector on my blue wire, and we'll crimp that down and do the same with our white. And since this is enclosed, I'm just using a regular butt connector, but, if you we're worried about any water getting into there, you could definitely go ahead and use a heat shrink butt connector and shrink that down with a heat gun. But, we'll just push that back in place. And then we're gonna sneak our black wire into here, and we can use one of the spade terminals in our little kit here. We'll just crimp that right on. And, now, you don't wanna go too far into that, so, you may wanna cut the wire back just a bit. They give you a little extra because if we have the wire sticking all the way out like that, it's gonna prevent the spade terminal from actually clipping on there. So, I'm gonna snip that back just a tiny bit. And crimp 'er down. And we're gonna stick this right where that white wire was. You may need to use your needle-nose. It's a little tight, trying to get your hands in there. There we go. Next, we're gonna dig another spade connector, put it on our yellow wire, and crimp it down. And we're gonna stick it onto our run capacitor, where you see the two red wires. There may only be one red wire, but with our specific model, there is two, and we're gonna pull the one off that runs to our PTCR. But for right now, we'll just get that yellow wire in place. All right, so when we're looking at this, we're gonna have one wire that runs over to our PTCR and the one that runs out to the fan. So, we'll pull the PTCR one off, and then we'll just use some electrical tape and let it sit in there. So, now we're gonna go ahead, we're gonna take a 7/16 socket and we're gonna take this nut off, on our cap on our compressor. Just pull that right off. And then this black wire that's running up to our compressor, we're gonna pull that off. It's on there pretty good, so I'm gonna go ahead and take some needle-nose, try and get that off. There we go. And we're gonna connect that to our black wire. So, they tell you to just use one of the little spade connectors, 'cause we have male and female style. So, you could just go ahead and take one of those and hook it up to your red and stick it in, but, honestly, I don't really like that connection. I'm gonna go ahead and just use a heat shrink butt connector just because this is, kind of, sitting outside, and you don't really want to get anything wet. 'Cause that cover really doesn't protect as well as it should. So we'll go ahead and peel back that a little bit. Grab a butt connector and we'll crimp that on. And we'll stick in our red wire. And then we can use our heat gun to shrink that down. All right, so, I've got that shrunk down and I'm crimping on another spade terminal onto my brown wire. And we're gonna kind of, have to bend this, just a little bit, because this cap that sits on here, it's gonna kind of, fight it. I've had this issue before, where once I got the cap on, it kind of pushed the spade terminal off, and then it wasn't reading over to the compressor and then the compressor wasn't kicking on. So, we gotta kinda bend this a little bit but you really wanna be careful, you don't wanna end up messing this up. So, really try to get between those two and kind of press down just a bit. It doesn't have to be crazy, you don't have to do 90 degrees. I just kinda get it and then I'm gonna kinda fix this, just a bit, so it stays tight. So, this little piece here, it's actually gonna be able to turn and we're gonna gently, kinda, shift it over, 'cause I wanna get it to where I can have this wire sit pretty much flat. And then, we gotta get that on there. We may have to kinda adjust it a bit more. But, really, the key here is just to make sure that this isn't gonna come off. And then we can kind of push our wiring back, and get a little test, make sure this is gonna sit on there straight. A little loose. I don't really like the equipment that they give to you, so, if you have like, a preferred spade terminal connector, go with that brand instead. But I'm gonna squeeze that down, just to kinda get a little bit tighter on there. All right, now I'm gonna go ahead and we'll put our cap back on. I'm gonna hand-tighten that on for right now and then I'm gonna come back with our socket. Tighten that down. And then I'm just gonna take some of the zip ties that they give you in the kit and we're gonna kind of get our wiring up out of the way here. Just so it's not sitting all loose. Just because how tight this is, I really can't get the hole big enough to stick in that little gasket that they give you. So, I'm just gonna take some gasket maker and I'm gonna try and protect the bottom here. I'm gonna lift that up and just let it. I'm trying to get in there. Just so that it's not cutting the wires. And then we're gonna go all around it as well. So, this is a little bit messier but, just with the tightness, I don't wanna take any chance that my drill coming through and actually poking and breaking that line. And this is also gonna give it a nice, watertight seal here instead. Our last step, we're going to just pop our panels back in place. We're gonna leave to cover off for now because we do still need to check to make sure that our start capacitor is actually working correctly but this is gonna help kinda keep the airflow going down into the trailer so that we can actually feel it. So, I'll pop this side panel back on. All right, so now we're gonna go to our HVAC. So, we got our bedroom AC, that's the one that we just did. So we'll turn that on. And we want it on fan, we wanna run it on high. We're gonna do that for just one minute. And once that minute's up, we can switch it over to AC. Now that we've let that run for a minute, we're gonna switch this over to AC, so we're gonna have it on cool, auto, and then we wanna change the temperature all the way down to 55. And then once that kicks on, we're gonna see a light's flash in a right, left, center, left, sequence, and then it should, after a little bit, switch from red to green. And that can usually take about three to five minutes. As you can see, we're sitting solid green, so we know that our Soft Start's working properly and it's good to go. All we'll have to do is slap our cover back on and we'll be good to go. Now that we've got our front AC all set up, we're gonna just complete that same process, over again with our second AC here on our main living area. Now that both Soft Starts are installed and we've tested them to make sure that everything's working correctly, that'll complete our installation of SoftStartRV's Soft Start for 2 AC setup, here in our 2021 Keystone Raptor, a fifth wheel toy hauler. My name's Kevin, thanks for watching..

Customer Reviews

SoftStartRV Soft Start for 2 Air Conditioner Setup - 1 Pair - SSR44FR

Average Customer Rating:  5.0 out of 5 stars   (4 Customer Reviews)

Reduce the startup power demand on your 2 air conditioner setup by up to 70 percent and eliminate that loud, clunking compressor noise. Start and run both ACs and other appliances without the fear of tripping a breaker or overloading your generator.


I can use my ac on 15 amp,
110 volt circuits with no problem now. I can mooch dock and stay cool. It’s wonderful and worth every penny.


30,000+15,000 BTU A/C on 30 amps!




See what our Experts say about this SoftStartRV Accessories and Parts

  • Why Does My 6,000-Watt Portable RV Inverter Generators # 333-0003-2-0007 Shut Off When Adding 2nd AC
    Even the largest generators are going to struggle to start a second air conditioner while the first one is running. This is due to an air conditioner pulling 1300-1800 running watts, and then when your second one kicks on it is pulling 3600+ starting watts. If you do not have a start capacitor installed on your AC units you should install # SSR44FR on your units. These capacitors store power to reduce the starting watts needed, and will give you generator a fighting chance of powering the AC's.
    view full answer...
  • Soft Start For RV With Two Coleman-Mach Airxcel Model 48254C869 Air Conditioners
    The SoftStartRV Soft Start for 2 Air Conditioner Setup # SSR44FR would be the system you are wanting since you have the 2 A/C's on your RV. The 1497-3601 part number that you were given from Airxcel is for their Coleman soft start kit that you would need to get from a Coleman-Mach A/C dealer.
    view full answer...
  • New SoftStartRV Units For A 2021 Keystone Montana Fifth Wheel
    Yes, the SoftStartRV Soft Start for 2 Air Conditioner Setup # SSR44FR that you're looking at is in fact the newer, smaller version. These units will allow you to run your ACs on a small generator or simultaneously with small appliances, will reduce the startup power demand on your two air conditioner setup by up to 70%, and, will eliminate that loud clunking compressor noise. These units will be installed vertically, and include the necessary hardware for installation as well.
    view full answer...
  • Can SoftStartRV be Used on Coleman Mach Q RV AC Units
    Yes the SoftStartRV like the part # SSR44FR which is a pair of them is universal and would work great on Coleman Mach Q units as like you noticed these are universal.
    view full answer...
  • Can I Install Larger Breaker to Keep AC Unit From Tripping Breaker on RV
    It's really tempting to just install a larger breaker when faced with frustrating situations like your AC tripping the breaker every time it kicks on but going that route creates safety concerns since the breakers are there to keep excessive power from running through your electrical system. Be sure you have other things turned off prior to starting up your AC to reduce the amount of power pulling through your circuits. If that doesn't help then what I recommend doing instead is adding...
    view full answer...

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Info for this part was:

Employee Jameson C
Expert Research:
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Employee Jacob T
Video Edited:
Jacob T
Employee Amanda M
Edited by:
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Employee Adam Y
Written by:
Adam Y
Employee Kevin C
Test Fit:
Kevin C
Employee Thomas T
Video by:
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