8,192 posts, read 23,724,630 times 3,040 posts, read 8,930,309 times Originally Posted by Racelady88 115V x 15A = 1725 Watts Due to inrush (starting) current, you will want to go at least 25% bigger. I would recommend one even larger than that, probably something around 3000 Watts, though you could probably get by with 2500 Watts. These are for peak load ratings. Sustained load ratings should be around 2000 Watts. Don't forget that with a window type A/C unit, you will need to mount the shell of the unit outside the van for proper venting of the hot exhaust air. This will most likely need to be out the rear of the vehicle so it doesn't protrude beyond the sides of the vehicle into an adjacent lane. Also keep in mind that if the inverter is being run off the starting battery that it wouldn't take long for the battery to drain to the point where the vehicle won't start. You will most likely want to be sure that there is a separate battery for the inverter, and that it is isolated from the starting battery so the ability to start the vehicle isn't compromised.

You'll also want to be sure that the vehicle's charging system is adequate. Also remember that in order to keep the batteries charged in the vehicle, the engine will need to be run long enough to recharge them. 4,515 posts, read 17,060,880 times Originally Posted by jdavid93225This is what I needed to know. I have a brand new deep cycle RV/Marine battery to push the inverter. price for new furnace and air conditionerThe unit is going to take the place of one of the rear windows.wall ac units cheap He is going to be so excited to have A/C.list best ac units 3,460 posts, read 3,731,105 times 1800 Watts at 12 volts would be 150 Amp draw on the alternator/battery....ouch I'd look at one of the RV units runner mentioned.

They should already be set up to run on 12 volts. A ROOM AIR CONDITIONER WILL ONLY WORK FOR ABOUT 20 MINUTES OR LESS ON BATTERY POWER FROM TWO BATTERIES. A single battery might not even provide the amperage to start the AC after the first couple uses. Boy times have really changed... When I bought my Statpower 1500 I paid almost a $1 a watt all those years ago... If you are really serious about finding the most efficient A/C... you need to look at some of the marine units... start at a place like West Marine... I think they have several offerings in the Master Catalog...Monitor your boat with Boat Command Boat Command is a complete remote monitoring package for your boat or marine vessel. Boat Command allows you to view all of your boat’s vital signs directly from your Computer, Android, iPad or iPhone. Receive instant text message (SMS) & email alerts when you need it most. Ensure the safety of your investment with Marine monitoring with Android, iPhone, iPad and Web.

Easy and simple to use! Install the device on your boat Download the app for Android, iPad or iPhone Monitor, manage and control your boat from the Boat Command app! “Boat Command has already saved me one disaster.” “Boat Command has already saved me one disaster. I got a shore power alert a couple of days before the big cold front (arctic blast – whatever). Called the marina and they checked and found the shore power cable had pulled out of the socket on the dock. They plugged it back in, bilge heater worked, and the 15 degree nights were no problem. Thanks Boat Command, you will be on every boat I own.” – Greg M. I have Boat Command on my boat and it’s great. My boat is a 1.5 hour drive. I find myself checking the Boat Command app regularly, just because it’s cool to know the battery voltage, temperature, motion sensor are all good. It’s great to know that when I get there with my family that the boat is ready to go. No more dead batteries upon arrival for me!

Boat Command is great. I love turning on my AC a few hours before I get to the boat. Now my wife doesn’t complain about going to the lake on hot days. Boat Command is fantastic. I love being able to check on my boat while I’m away. It’s very nice to be able to turn on the ac system an hour before I get to the boat. I had a small issue and contacted Boat Command support and they helped fix my issue very fast!As a multi-location and multi-line boat dealer with marinas spanning 3 states and customers all over the world, literally, the Connect system by BoatCommand is a no brainer. We are in the process of installing a unit in EVERY boat we have in inventory. Being able to monitor a boats vital signs and even more importantly, the location, we are able to spend less time chasing inventory or simply jump starting a boat with a customer standing over our shoulder, because we can be warned when batteries are low and boats are moving….and that’s just the tip of the iceberg. Not to mention, our clients LOVE the fact they can monitor they boat from home or even when on vacation.

The biggest perks we are seeing from them is bilge temp monitoring in the winter months (for those that don’t want to winterize) and GPS tracking and battery maintenance for the trailered boats. It’s awesome and should be on EVERY BOAT, period!I have the Boat Command from the boat show in Florida and use it a lot. I had concerns about the difficulty of installation but it was easy. One part I had an issue with was I could not figure out how to wire the shore power (I am not very knowledgable of wiring) and Rick from Boat Command helped me out and even shipped me extra equipment to help for free. Can’t really beat that customer service!Why pay more and get less? Shore power disconnect alert Unlimited sharing of data Dual battery voltage monitor Keeps log of daily vessel data Control up to three devices Since we shared our very first RV solar video we’ve been asked the same question over and over:  Can I run my air conditioner with all that solar power?

We’ve always responded with a “NO” since we felt it wasn’t realistic based on the battery banks and inverters we’ve had in our previous motorhomes.  With our current RV, we installed some serious Off-the-Grid technology and for the past several months we kept thinking, maybe we can run our a/c without being plugged in?!? An opportunity landed in our laps as we unexpectedly crossed paths with our friends John and Peter The RV Geeks near Joshua Tree National Park. It’s almost like the stars aligned: The Geeks are RV DIY install gurus, the desert temps were rising, the sun was brightly shining and the wind was calm so we could actually talk to the camera. So, we decided to put the question to the test! Will we really be able to run our RV air conditioner off our solar setup? Please remember we’re not RV Solar or Air Conditioner professionals. We’re simply sharing our experiences and I’ve done my best to explain our test results and I hope the information below makes sense.

Oh yea, and don’t forget the most important part of this equation: We’re only discussing running 1 A/C unit in full sun.  If your RV so large you have to run 2 or 3 A/C units to effectively cool it, or you wish to park the RV in the shade, well…I think you’ll need to tow a trailer full of solar, battery and inverters to handle it.  Or you could just run the generator or plug-in to shore power and say “fahgettaboudit”. The missing link for us is the Soft Start. After making this video the Micro Air people decided to offer a $50 discount coupon if you use the code “GWTW” at checkout. We think that’s pretty nice so we’ve passed it along to you. What do you think?  Any plans to install a giant off the grid kit to run your air conditioner?  Think we’re crazy for even suggesting it?  Share your thoughts and questions in the comments below because I know you’ve got an opinion on this RV mod. Disclaimer – This video and post are solely based on our testing experience.