FINALLY! The Holy Grail - Air Conditioning off Batteries on our Sailboat
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- Опубліковано 27 жов 2021
- Our first attempt at running air conditioning off of our batteries didn't work so well, but this unit from Mabru is so efficient that we can run the AC all night long off of our lithium batteries. This week we show the installation on Clarity and compare the watts, BTUs and efficiency of the two units, side by side.
If you want to know more about Mabru: Mabrustore.com
If you'd like to talk to Andre Cormier at Gulf Nautical about purchasing a Mabru, you can contact him here: www.gulfnautical.com
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Nick and Megan have been #sailing and living #OffTheGrid on and off for the past 20 years. We love to #travel and spend time in #nature and we hope to see you out here!
Nick's Books and Audiobooks:
GET HER ON BOARD is about getting that significant other to buy into this cruising nonsense. People seem to like it.
Audiobook: www.audible.com/pd/B00CIE9I1I...
Book:
www.amazon.com/dp/0578057298/...
LIVE ON THE MARGIN is about making money on the go trading stocks and options. I co-wrote it with Pat Schulte of Bumfuzzle. People seem to like that one too. All proceeds donated to our boat.
Audiobook: www.audible.com/pd/B00CMCGHPQ...
Book:
www.amazon.com/dp/0578116642/...
Audiobooks:
BUMFUZZLE - Just out Looking for Pirates.
You know these guys, and now you know me, so have a listen.
www.audible.com/pd/B00CWJISRE...
BOUND FOR DISTANT SEAS, by James Baldwin
James is the real deal and this his story of adventure aboard a small, simple boat.
www.audible.com/pd/B015HQBDWU...
#Leopard46 #BoatLife #Catamaran #TravelVlog #DigitalNomad #LifeStyle #Sailboats#Leopard46 #BoatLife #Catamaran #TravelVlog #DigitalNomad #LifeStyle #Sailboats #slipinsurfskins
![15 Things We'd Do Differently - [5 YEARS ON A CATAMARAN]](http://i.ytimg.com/vi/q0I3jvPRu5U/mqdefault.jpg)
*This unit works like a charm. Keeps my rv 21 x 41 very **Fastly.Cool** . I recommend to anyone that wants to keep a rv cold without having to turn on the main a/c.*
Wow! Huge difference, which in my mind, is a bargain for the additional cost. I love the tech shows and how well you present what can be a complicated topic. Really impressed with no bloodied knuckles or French! Thanks!
Thank you for your very detailed video. Unfortunately, you have given me yet another project for my boat. When I first bought my boat, I had images of just sailing, entertaining friends, visiting exotic locations. Now I have fun things to do like add this air conditioner, upgrade my wiring to handle the new batteries I will need, etc.! Thanks for the video. Fair winds!
This video is right on time. I'm about to buy a 56 Formosa and I will have to replace the old a/c unit. Talk about perfect timing. Thanks guys.
Thanks for the great tip on the A/C unit. I'll certainly be looking them up when I'm refitting my boat.
For me, the single most useful boat video on here. I aim to buy a boat in the next few years and for me AC and heating are a must. In fact I have decided I'm happier with a smaller monohull if I can kit it out with: water maker, hot water, heating, AC, a freezer and electric cooker. Murdock was the best!
Love your videos- great job detailing the switch to a 12V HVAC system. We just finished installing a 16K BTU Marinair in our 34’ Fountaine Pajot power cat. Very pleased compared to the old Mermaid air I had. Features of the Marinair unit are similar to the Mabru (except runs on 110V AC). It has variable speed fan and auto setting. Also has humidity sensor. Cools the whole boat pretty fast. Price was $1900. Hard to beat that. We dont have solar. So we use a Honda 2K generator when on the hook. Not quite as nice as solar/Li battery set up. We have 4 100 amp AGM batteries - not enough to push the Marinair. We do mostly coastal cruising around Florida so system set up works for us for now. Maybe someday we finally go for solar/Li.
Great video - really unbelievable amount of efficiency and the best part, it will actually be cool / warm the entire time you need it!
It’s amazing.
Yet another top notch episode. Thanks guys!
Great vid guys. Nice to get back to some sailing content. Really learnt something here too.
Getting boaring😉 with all these excellent shows, you set the bar at a new level each week, and always look for my o’kelley fix each week! Great find!
Awww, thanks Mark
Excellent, cudos to Mabru for an excellent product!
Awesome... I've always wondered if there was a bit more that could be done on the AC front.
Another great video love the technology information that you guys provide.
...wasn´t expecting it to "come with an installer"...THAT WAS SO FUNNY!!!!!...thank you for your videos...always very instructive.
great editing explaining something not so easyly presented.
Loved it.
I'll never be able to afford one of the batteries shown near the start of this video, much less a boat to put it in, so why am I watching this video about replacing an expensive boat AC unit with an even more expensive AC (and 2 gauge copper runs, no less. Seriously, 2 gauge!) ? Well, aside from me being odd, it's because you two are always so cute together and seem so genuine and approachable. I guess it's the same reason people root for the underdog to prevail in sports, because where there are winners and losers you at least hope those that win are good people deserving of the win.
Amazing! Sharing this with my Sail friends!
I love coming here to learn. Great vid!
Great review guys ! Thank you
I used 12 volt fans and a damp towel on my live on sailboat during hot summer nights. The fresh water deck shower was very helpful.
Sounds fantastic for off grid homesteading in Brandon Fl., combined with aircrete insulation and appropriate volume, P × V = n R ×T . Thank you for posting.
lets go brandon
Great video, thanks guys.
Absolutely AWESOME video!!! You killin it
Thanks Bill!
Love the: 'Mike Patey" move - HA!
Only aviation geeks will get it!!!
Let’s get back to work! Lol
@@TheOKellys
Ha, ha, ha!!!!!
Don't go ground looping Clarity :-)
The catamaran world needs a Mike Patey
@@donjohnston3776
You got that right, just image the innovation that would come from him and his brother!!!
I am impressed, well done ✨😊👍
Mr. T was the MacGyver of the A Team
Lol
I frigging love watching you guys!!!
Hello my dear friends, how are you both doing?
Such a great video. I learned so much about ACs in a boat. It is so important for so many people.
Thank you for the information. Wishing you a great trip out of Annapolis. Cheers from Canary Islands.
Hello Carlos, so great to hear from you! We are doing great and hope you are too!
Another great, instructive video. Thanks so much. You inspire confidence. I may well be looking to install AC before summer as it gets really hot in July/August in Greece!
Great video, love the Mike Patey reference!
Always beneficial when you’re paying for quality. Copper is an unavoidable but retrievable cost. Sleeping comfortably is priceless
thx for the great vid ! happy sailing !
Thank you for the a.c. update. Glad to see 👀 this stuff working.
So head south as fast as you can so you can use it. And give a report on how it is working.
👍 ok. Until next week Aloha from the Big Island 🏝 of Hawaii 🏝.
P.S. where it is summer all the time ⏲
Oh man! We are ready!
Very cool, just started watching your videos. Thank you for sharing:-)
Ooooh yeah: Love it when I have to pause your video because you just mention something new. Like a 12 Volt Air conditioner.
now you done it. cooling and heating. That is awesome.
pretty sure the cooling was the goal.. but the heating will come in realy handy some cold days and will help stay longer on the boat in the off season or between
Thanks for posting this video. As I start in a refit of a 35-year-old trawler, I am looking for the latest technology for a 1400 Ah LiFePO4 battery bank. This is awesome as my wife and I always love our cool sleeping cabin but are looking to live off-grid as much as possible.
When it’s 90 degrees with 90 percent humidity at night and you are trying to sleep with fans in a small enclosed space 5300 dollars is NOTHING ! Being hot during the day while you are working or lounging about is one thing but a good nights sleep in a comfortable environment is priceless. ❤
Great video! If I had a boat I would install it for sure! 👏🏻
Great thumbnail, Nick and Megan! Received MORE OF YOUR COFFEE!!!!!! Life is good! Cheers,
Thank you! We got a new shipment on board today too whoop whoop! Thanks for ordering more coffee, it’s so good!
When you sell that behemoth of a generator it will offset the cost of the upgrade even more. Totally worthwhile upgrade. Well done.
I got the Mike Patey reference. Forgot that Nick is a pilot. Flying cowboys are a great crew.
Great upgrade. That thing looks like it’s 10 times the machine of the old one. Quality is worth the money not to mention the efficiency
Agree with you there!
Awesome video!
Actually, the modern day DC to DC converter or DC to AC inverter are both very power efficient from 95~98%. There are very little power loss during voltage conversion. The main reason that the new Mabru unit is much power efficient than your old unit is because it use variable frequency drive motor, so instead on/off, it basically just slow down. If you can fit the household AC (VFD type) on your boat, it will be quite efficient as well :)
Excellent video!!!
Wow, what a difference!
What a cool video. It really was about being cool. No pun intended. Lol. It was a great video. What a great comparison of the ac units. Thanks 👍👍👍❤️
Great ac unit....the fact that it is also reverse cycle as well is awesome..!
Thank you! We need it right now it’s chilly in Virginia!
A very informative video...Thanks
Great vid 👍
Need a shake up in the RV and camper market as well.
Cheers
Great info! Thanks
enjoy your warm night
Thank You!
Brilliant!!! 👏
Great work Andre!
Da man!
Thanks Phil!! Your work inspires us. Look forward to collaborating with you in the future.
Great find and the extra expense up front pays off on the longevity side. Even in a house furnace, an ac fan will cost $300 per year to run where as a dc fan will cost $30 annually, again more expensive up front but over 25 years way cheaper. Well done.
Had no idea!
A ductless mini split is way better and way less money. They are so inexpensive you can afford to replace them every 2 years. A 21 sear 110volt uses 4 amps running and around 6 amps starting and under full load.
@@TheOKellys I may be wrong on this but I suspect the difference is due to not having a transformer involved transformers are big time energy hogs.
A one-time cost of $3,200 for all-night cooling on batteries on a hot, sweaty summer? Sounds like a great investment, especially when you want to limit your diesel use!
It costs more to talk about it than the money spent for sure. It doesn't pay to be cheap.
$3200? he said it was $5300
Worth every Penny
In 2010, my new semi tractor came with an A/C unit hard-wired into a 'house set' of 4 batteries, the old tech, wet-cell type. They would run that a/c 10 hours, enough for a truck driver's required rest, meaning that in places like California, with their 'no-idling' law, the truck engine didn't have to run to power the main a/c. That little unit in the sleeper worked great and so my biggest reason for not wanting to go on the California runs went away. Almost forgot: the company supplying those a/c units was 'D/C Cool'.
Also, your AC unit did not require marine water to be pumped up into the condenser intercooler which wastes more battery power. For less than 1/50th of the cost for the sail boat, we use wet cell batteries, a 24 VDC battery system and a single high efficiency inverter for our 5k btu AC unit that cost us $100. By the way our boat anchors in water so shallow that a water intercooler cannot be used.
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Q?: What brand of house batteries were those? Also, were they deep cycle?
Very informative, thanx
I got into air conditioning and refrigeration in 1961, and over the years I have a lot of questions about the subject. A water cooled heat pump does not have to be defrosted so it is the most effcient while heating. Look up the Tesla valve; it so simple with no moving parts to wear out, and he got the design in a dream from God. The pride, and joy of his work was the Tesla turbine. If a Tesla turbine/pump pumped water vapor it would be the most efficent a/c in the world. Big brother doesn't want us to know that water is the best refrigerant there is for a/c systems. The higher amout of latent heat of evaporation in b.t.u. the more efficient. Water at 970.4 btu per pound wins the race. The head pressure of a/c systems is about 200 pounds. Water is 14.7 psi. Which would draw the most amps? In a lithium bromide absorbtion system the temperture is 40 degrees F water is the refrigerant. Just marry the Tesla pump to it.
Is there a problem with water freezing and expanding though?
Phase change cooling is efficient but water doesn't have favorable characteristics for that in a practical machine. It's not a government conspiracy that water isn't used for air conditioning; it's physics.
@@LoanwordEggcorn Ice A/C works wonderfully. It used to be used on railroad cars. An example of how well it worked, take an 85'X10'X10' one in the Florida sun. Add 400 lbs of ice to start with. 90°F inside temp at the start and 15 minutes later it was at 75°. It kept it there for the next two hours. And it was good enough for US Presidents from 1942 to 1959. Local power company office building makes ice at night and uses it during the day. Saves them a batch of money.
@@gravelydon7072 How would that work in the middle of the ocean where there are no ice factories or power companies?
P.S. The ice factories at that time used refrigeration like air conditioning to make the ice.
@@LoanwordEggcorn Ships use keel coolers. It can get really cold from them as they can dump large amounts of heat into the water. We used them for cooling out engines at a number of locations.
Ice houses used a different type of cooling. Theirs was like the old Servel unit, Ammonia Cycle. You heat it up to cool thing down. And in colder locations, they went out and cut ice in the winter on the lakes and then stored it till needed.
Mike Patey motion! Awesome!
Another DIYer!!
Love how that camera lens peeks in on your right! Lol!!
Love the Patey fist pump! If you like boats, you probably like aircraft and great engineering.
Cheers guys
Very Interesting!
Great video. I did notice in the video you appeared to be recording the BTUs from very different locations. The old unit you seemed to be measuring 4 to 6 inches away from an exhaust. For the new unit it was being measured inside a sealed duct directly at the AC unit. But in the end if the power draw is lower and its sufficiently cooling your space, that's all that really matters.
Yeh plenty of errors, that’s why I said even if putting out full btu, it’s still half the efficiency in the dometic. But good eye!
The probes were different . Anemometer in old AC shot the one in the duct of the mabru was a temperature probe measuring outlet temp.
The Mike Patey move. I'm impressed I was just catching up on Scrappy progress. I wonder how many sailors are also pilots?
Cool. I dropped a Velair 16k btu into my Monohull - which Gulf Nautical also sells. It's a great option.
I run into the same dilemma in the trucking industry. Thanks for the video.
Great video as always and in this case bonus points for the use of a cinematic McGuffin :-)
And points to you for using McGuffin!
@@TheOKellys LOL
Love this! Also love Oregon! Never forget camping on Canon beach with four under five year olds……it’s where the seeds of sailing away were sewn. 😂
That last comment was a reply to another one of your videos…oops. Must say you both are so capable of giving good information!
Thank you. Cannon is one of our favorite places on this planet.
Love your videos
Love the thumb nail, kudos to the photographer!
Why thankya! The model did all the heavy lifting!
Amazing improvement! Well done!
I know battery technology has improved rapidly over recent years.
Is this also the natural result from improved technology over the years or was this Mabru technology available back when the Dometic was new?
Thankyou 👍
Good stuff nothin' like yanking out old outdated tech! Many RV's are moving to 12 volt fridge compressors to save on power and work well on batteries that are solar charged. That way you can get rid of propane.
LETS GET BACK TO WORK!!! LOVE the nod to Mike Patey!! He is rocking the aircraft world! I do planes too! Sail boats, planes and motorcycles!
I got close to buying a Wilga in 2007, so when I came across Mike….the MAN!
I enjoy your humor.
Mike Patey, Back to work reference, probably only fellow aviators would get this. Love it.
Glad you noticed. Now, back to work. Lol
Really enjoy your vids. Tons of info. Thanks. My wife and I have always dreamed of life on a sailboat. Before we jump all in we would love to spend some time with someone on the water for a week at least to get a hands on experience. Do you know of anyone you could recommend that charters in the carribean.
good vid and timely - see you installed ReLion batteries - I am a big fan of relion based on my research but rarely see on youtube boats. bravo on choice. Also shopping for AC , boat IM buying (4 yr old mono) has AC problems and draws more power than Vegas at Christmas.will def look at your AC vendor
We bought those Relions four years. They work just fine, but there are better deals out there now from other manufacturers.
Nice. As we get a little older we do like comfort
Impressive aircon. Seems to be worth it. All I need is the boat :)
Get that boat Richard!
"Mike Patey" back to work!! love it.
Back to work! That guy!
@@TheOKellys proof you are a genuine aviation enthusiast!
Thanks for this video, i m designing off grid power systems for my house and RV. Firstly i am an aircraft electrician so I carefully calculate before building.
12 VOLT DC maybe better than 110 VOLT AC, BUT.... 24 VOLT DC is even better, its half the amps and therefore half the size of power cable required. My batteries I built myself from 6 old Toyota Prius/CamryHybrid NiMh batteries, This is around 200 CELLS in 12 CELL BLOCKS at 25 VOLTS, eg 600 WATT HOUR per 12 CELLS. Thats 16 BLOCKS that weight 10 KGS each for a total of 10 KWH and 150 KGS. Caveat is charging NiMh batteries required a custom designed microprocessor charging system that I also had to design myself as NiMH cells require delta temp/temp charging cutoff. eg temp rise of 2 degress per min. Here in Australia I have trouble sourcing hybrid batteries and cells, but in the USA there is an abundance of secondhand cellsl (i forgot to mention I conditiion all my cells first to have usually 110% to 120% min capacity, not expensive as i use radio control model type chargers). Most people dont understand that other than weight lithium batteries are NOT the best choice. Put it this way, ALL satellites in space use NiMh type cells and batteries, with minimum life expectancy of 25 years. NiMh can discharge to ZERO volts and recover and DONT blow up or catch fire.
I paid about $300 USD total for my 6 hybrid batteries, that give me 10 KWH. Just thought this might be a cost effective marine solution for any technical boat owners out there. Let me know if you want more information OZ
Badass!
Very impressive indeed. You will enjoy the cool without bugs and with NO ENERGY GUILT! Enjoy!
Thanks John, so true about the guilt and the morning check in on the damage 🤣
@@TheOKellys sad to disappoint thousands of no-see-ups, eh?
Great Video on the 7k btu Mabru Unit! Just wondering how the unit performs in warmer testing conditions (like 28 degrees Celsius water and 35 air temperature) in terms of btu output and power consumption? Do the 28ah include the water pump?
Yeah yo this gives such great videos that air conditioner is awesome
You referred to putting in BTU’s. That is the measurement of heat and is equal to about a match. The definition of refrigeration is the removal of those btus which is taken out by condensing which I would say is likely a water loop under your boat. Water is the best way for the transfer
Amazing. I want one. Can’t afford one or justify one, but I WANT IT!!
Wow!
Love the Patey fist pump!
I'm already subscribed, but Megan really reeled me in on this video with her sultry cover shot.
+1 for the Mike Patey reference.... Back to Work!!!
Awesome analysis, thanks! Could this unit be installed in a campervan? Is there a shroud for the condenser to push the heat outside?
A heater too! Someone is getting lucky tonight!!
Cheers.
The comparison was great how did you get all the data with what type of equipment and app or software. Already told a friend with a cat like yours. I help businesses reduce their HVAC on Roof Top Units (RTU HVAC systems) so this would be very helpful software or equipment. Thanks for the great video and education. Mark