Running a 5000btu air conditioner on Harbor Freight solar panels?



Views:134648|Rating:4.18|View Time:8:3Minutes|Likes:1064|Dislikes:208
in this video I test out a 5000 BTU air conditioner with 150 watts of Harbor Freight solar panels, 352 amp hours of deep cycle batteries, and a power inverter to demonstrate how well you can run a 5000 BTU air conditioner on this equipment. Off Grid air conditioning.

links below
If you like What I do and want to help fund this channel and my family you can donate any amount here on my website

Renogy 400 Watt 12 Volt Monocrystalline Solar Bundle Kit

10 GAUGE WIRE RED & BLACK POWER GROUND 100 FT EACH PRIMARY STRANDED COPPER CLAD

Selterm UL Listed Heavy Duty Lugs Battery Cable Bare Copper Eyelets Tubular Ring Terminal Connectors

IWISS Cable Lug Crimping Tools Hand Electrician Pliers for Crimping Wire Cable from 6-50mm²(AWG 10-1) with Cable Cutters–Thickened and Reinforced the Metal Plate!!

SoundBox Connected 0 Gauge Red / Black Amplifier Amp Power/Ground 1/0 Wire Set 50 Feet SuperFlex Cable 25 Each, ANL Fuse Holder

tubebuddy help your channel get views

49 thoughts on “Running a 5000btu air conditioner on Harbor Freight solar panels?

  1. There was a comment that you aren’t running directly off of the solar panels which is correct. I doubt that the panels would provide enough energy to run the ac.

    What you have is a bank of batteries sufficient to run the ac for a while but the one set of hf panels won’t run the ac by themselves. The ac will consume more than the panels produce.

    However, if over a period of time you fully charge your batteries, then you can run the ac. Note that the ac will run for a shorter time than it took to charge the batteries.

    A simple but not exact example would be to fill up a bucket with a hose and record the time. Now dump the water out of the bucket. Are the times the same?

    Long time to charge, shorter time to use up.

  2. Terrible video didn't even answer the question of how long?

    What 30mins? That is crap!

    What people want to know is how long would it continuously run? How long does it take to recharged & is it safe.

    This video answered none of that and was a waste of time.

  3. So it does not work! Who's cooling a small place? Not me. Who keeps the A/C on Lo? Not me. Who's cooling at night with no sun? I am. Does it work at night? No. Does it work on cloudy days? No. He's got all that money tied up in a system that does not work. What does that tell you? Everything!!!

  4. Those batteries and the inverter are running the the air conditioner, not the solar panels. They alone could not run the AC. You have to have a big enough battery supply and inverter to run an air conditioner. The question is how long can the solar panels keep the batteries charged up. The big battery bank decides how long the air conditioner will run. The solar panels would not keep them charged enough to run the AC given enough time. How long were the batteries able to run the air conditioner with the small solar panels charging the batteries. The solar panels would not be able to keep it running indefinitely, that is the question.

  5. It is easy to figure this out. Plug the AC unit into a watt meter like a killawatt and see what it pulls
    while the compressor and fan are working. Now, I find a good rule of thumb with batteries is
    to multiply the amp hour rating by 12.5 then multiply by .5. This is the number of watts per hour maximum your batteries can deliver after a full charge if they are in good condition. Now divide this by the power pulled by the AC unit and you can calculate how long your system's batteries can drive
    an AC unit. As for the panels and charging. Look at the actual voltage of your batteries and
    the amperage reading for charging off your charge controller. Multiply the amps from the
    charge controller by the battery voltage and that is the number of watts your solar panels are delivering to your batteries at any time. So, if your batteries are being charged at 14 volts at
    100 amps, you are experiencing a charge rate of 1400 watts. Now, this will go up and down
    as the sun's brightness varies due to clouds and such. Also, a 100 watt panel does NOT
    put out exactly 100 watts. Most of the times it varies between 50 – 80 watts when the sun is out.
    Then there are line losses. The higher the current from the panels to the charge controllers, the
    more the losses. Thus the reason why such thick wires are used. You can offset this by
    using a MPPT controller and running your panels in series in a 48 volt or higher system.
    A MPPT controller can take something like 48 – 90 volts and drop it down to 24 volts
    for charging batteries in a 24 volt system. Much more efficient then a 12 volt system and
    the gauge of wire needed is far smaller. You also experience far less line losses so you
    can place your solar collectors farther away without the line loss issues. Also, ALWAYS
    use a pure sine wave inverter to drive anything with a motor like a drill, saw or AC unit.
    modified sine wave inverters are cheap, but they are hard on electric motors.

  6. Batteries gas off . This will cause corrosion,etc. in an enclosed area. Also, hydrogen and oxegen are produced which are flammable. You have a fan,etc. that look like they wouldn't be safe in that type of an environment. Sorry, just trying to help.

  7. I know it's not the newest video, but it is a 2018 video. But I don't think you went long enough. I know it's a lot of footage to deal with, so since you have at least a bit of reputation is say you can turn the camera off for like 4 hours and just monitor the voltage yourself. And of course record your phones time so that people know when the test started, then when you come back you have the phone show the time.
    Even 4 hours seems short, so if it were me I'd start around 9 or 10 am, and let it run as long as you have battery power. That way we can truly see how long you can go.

  8. Why post? How not to run an AC off of solar. Fuses? Circuit breakers? Battery venting? Little wimpy panels for an excessive load? Help someone burn their camper down MR tech computer solar electrician what ever guy. 20$ charge controller says it all. Get a PWM that you can program before you finish killing your Walmart batteries

  9. Conclusion? How many hours can you run your air conditioner on your batteries down to 50%?. And from what I've learned studying solar whatever the amp hours of your batteries you want at least twice up to four times the solar so "example" if you have 300 amp hours you want 600 to 1200 watts in solar.

  10. 5000btu ac needs 12 hrs compressor time /day or 12x 450watt/hrs = 5400watts/day min. You need min 10-100watt solar panels (1000watt x 6hr = 6,000 watt hrs useful) to charge 12-100 amp/hour (12,000 watts, 6,000 useful) 12volt batteries to power a min 1200w sine wave inverter to run a 5000 btu (450 watts/hr 225 average) window ac unit round the clock.. more batteries would be better, each battery good for about an hour of compressor time. . 6 would get you thru a hot night in Texas if the room was insulated properly. Compressor will run half the time depending on inside /outside Delta T. and insulation r value.
    This rig will produce about 6KW of electricity or about $0.75 a day. Or $22.50 a month.
    Will pay or itself in about 5-10 years if you do it yourself.
    A 2kw inverter generator will burn about $8 to $10 worth of gas per day doing the same job.
    A cheap 2k-4k generator will burn twice the gas.
    Grid power Natural gas Co-Gen generator units are at least 8-10 times more efficent at turning Natural Gas into electricity than are gas generators.
    In an emergency, shut your house down and drive to your GrandParents house.
    Or get a little 2kw Honda Invertor Generator.
    Also it takes about a 600 Watt load (300 per hour average ) to run a refrigerator. Cost more to run an RV one on propane.

  11. The test is not accurate by any means. You have the A.C. unit mounted in a window. Once your room becomes cool, you run the A.C. on recirculation. This takes in the pre-cooled air and cools it down again. Thus using less energy. Also, you didn't check it during the night when you'd likely to want it the most. Things to consider

  12. I'm looking for an air-conditioner that will run straight off the solar panels. The more direct sun (hotter) the better the air-conditioner works (variable speed). When the sun goes down it turns off automatically. Something like a DC variable split phase air-conditioner. The inverter in the video is wasting probably 25% of the power.

  13. For safety reasons the fan should always blow fresh air into the battery box and out a vent hole on the other side. This way the explosive gases don't pass through the potential spark source that is the fan.

    Otherwise, nice setup for occasional use, emergency backup power.
    I would make sure that there is always a small load on the system though to keep it cycling and to keep the charge controller from constantly having to dump power during the day time. Like maybe a little 5w string of decorative LED porch lights or something.

  14. Why are you using that POS non MPPT charger? You are wasting power. The HF amorphous panels are horrible efficiency as well. You can get almost double the power from monocrystalline panels the same size….

  15. Busted for what? Harbor freight solar is not the best financially or efficiently. You can buy a quality 100 watt mono panel most places for around $120 A good mppt charge controller $200. Running 6-8g wires from controller = more charge. Up grade to trojan batteries. And yes, running that cheap fan is going to cause an explosion when the off gassing hits the sparking brushes.

  16. This really cool and all, but there are cheaper and better ways of doing this. The cost of raw solar panels is around $1/watt I think. Harbor freight solar panels cost around $2/watt. For example, look on ebay and you can find 100 watt solar panels for around $100. Just remember that the rated output is in absolute ideal conditions like direct sunlight on a cold day in winter near the southern end of the norther hemisphere with an MPPT charge controller. Also, invest in a 24v system with a good MPPT controller and a pure sine wave inverter. 24 volts means less current for the same wattage, the MPPT controller allows you to get the max output of your solar array and a pure sine wave inverter are way better for running inductive loads. You may spend an upwards of $800 on the charge controller and inverter alone if you get commercial units but if you are going for an off grid setup it is worth it for reliability. Suddenly the solar panels don't seem so expensive compared to the rest of the equipment/batteries! Oh yeah, batteries, use deep cycle batteries if you want them to last more than a month or two under normal use. Car and tractor batteries are not designed for constant daily use like in a solar power rig. Have fun, and good luck!

  17. Thats not solar, thats battery. And i wonder at 100$ per battery, the panels cost, and all the rats nest of wires, oh and battery's changed every 4 yrs again 400$ more bucks…geesh just pay the power company. You can run a dingy 5000 watt ac unit ( smallest window unit made) like forever and forever on 1000$ which is what you have in this after 4 yrs. And that same 1000$ runs that unit much more than an hour per day.

  18. Deep cycle batteries are terrible..
    My first time doing solar I had too many shorts on the Deep cycle batteries and they gas off…plus have to check the fluids all the time
    But I got them from Kmart so I just kept replacing them for free lol…until I tried and switched to AGM..
    They are a little more pricey ,but no more shorts and they last much longer..
    Much safer..and no smells
    Only if you over draw them too much they will fade in power although if you have a recondition charger you can get them back to new most time's..
    I have have my five AGM s for seven years now running 365 days and they are still taking charge and giving me enough power to get thru each night running two fans 14 – 7 watt LED lights inside and outside and flat screen TV PlayStation
    I can run Aircon I have run my 5000 BTU from 11 am to 330 pm many time and the rest of the day recharged my system almost to full..
    I have around 500 amp hours bank and 750 watts of panels..
    Really I found that if you run your fridge on a separate system it is much better so I have two 100 amp hour batts 250 watts of solar and a 2500 peak inverter to get it started and a 30 amp charger controller..it's about $600 worth of hardware ,but it has not failed yet..
    Most important is the fridge…to keep lots of fresh food
    Having a bigger inverter so it puts less strain on everything and a bigger charge controller the same.. 30 amp
    I am now about to switch to lithium battery set up as the cost is dropping and is about the same price as AGMs and it's way more power for the same price..
    So I spent for my system about $2500 seven years ago and I have not had a power bill in seven years..
    That's included cables all hardware
    It's awesome..

    my system consists of..
    4600 peak inverter, from eBay
    a 1500 peak watt backup inverter from home depot
    2 -30 amp charge controllers plus a back up 30 amp controller it's on stby mode from eBay
    five AGMs from car quest
    Two AGMs for my fridge
    so actually seven total
    3- 255 watt panels I got locally for a dollar three cents a watt..good price and one more 30 amp for my fridge one more 2500 watt inverter and that it..
    One thing I learned is buy backups for everything you buy..if something fails your back online in minutes…iii

  19. Deep cycle batteries are terrible..
    My first time doing solar I had too many shorts on the Deep cycle batteries and they gas off…plus have to check the fluids all the time
    But I got them from Kmart so I just kept replacing them for free lol…until I tried and switched to AGM..
    They are a little more pricey ,but no more shorts and they last much longer..
    Much safer..and no smells
    Only if you over draw them too much they will fade in power although if you have a recondition charger you can get them back to new most time's..
    I have have my five AGM s for seven years now running 365 days and they are still taking charge and giving me enough power to get thru each night running two fans 14 – 7 watt LED lights inside and outside and flat screen TV PlayStation
    I can run Aircon I have run my 5000 BTU from 11 am to 330 pm many time and the rest of the day recharged my system almost to full..
    I have around 500 amp hours bank and 750 watts of panels..
    Really I found that if you run your fridge on a separate system it is much better so I have two 100 amp hour batts 250 watts of solar and a 2500 peak inverter to get it started and a 30 amp charger controller..it's about $600 worth of hardware ,but it has not failed yet..
    Most important is the fridge…to keep lots of fresh food
    Having a bigger inverter so it puts less strain on everything and a bigger charge controller the same.. 30 amp
    I am now about to switch to lithium battery set up as the cost is dropping and is about the same price as AGMs and it's way more power for the same price..
    So I spent for my system about $2500 seven years ago and I have not had a power bill in seven years..
    That's included cables all hardware
    It's awesome..

    my system consists of..
    4600 peak inverter, from eBay
    a 1500 peak watt backup inverter from home depot
    2 -30 amp charge controllers plus a back up 30 amp controller it's on stby mode from eBay
    five AGMs from car quest
    Two AGMs for my fridge
    so actually seven total
    3- 255 watt panels I got locally for a dollar three cents a watt..good price and one more 30 amp for my fridge one more 2500 watt inverter and that it..
    One thing I learned is buy backups for everything you buy..if something fails your back online in minutes…

Leave a Reply

Your email address will not be published. Required fields are marked *