I've just got a discount code through from EcoFlow and it seems there are some great extra savings coming up for Black Friday as well so if you're interested it looks like a good time to buy so take a look at the link in the description (there's a link in the EcoFlow Max video for that as well)

As an HVAC pro of 50 years. Your airflow for your cooling needs to take room air and cool in down. So it’s always gaining on the temperature. When it was on deck is was pulling the “return air” from outside where the temperature is a constant. A/C units will gain 20-30 degrees as air passes through them. So if the outside temp is 40 it will never get the room below 20 or so plus your losing temps in the tube. Hope that makes sense.

@svfairisle

7 ай бұрын

Yes makes perfect sense, needs to recycle the air to keep cooling and dehumidifing

Elegant compact cooling system for the Tropics. Marvelous demo on this lovely system. Thank you so much for sharing.

It's just some bonus information, don't watch if you don't like it. I found it interesting, thanks.

Oh good. That makes more sense. That’s actually quite clever. Thanks for clarifying that.

Good one. I’ll buy one of those. I just have to figure where best to use it. I sleep in the fwd cabin (highish bunk) so can make a slide in shelf underneath with built in exhaust pipes. That’s in the short term. In the longer term i can use most of the mechanism as is but have a heat exchanger added, for water cooling, by those who know what they are doing. The thing is that air conditioners that operate at 250 watts are like hens teeth, so the guts of this machine are special.

Thanks for doing this video...we're doing research on this very unit. Great demonstration.

@svfairisle

7 ай бұрын

Glad it was helpful!

Super info, we are sailers in and around Thailand, and there are times its way to hot and humid. Thanks for the video

Having just been through a hot summer, I thought it was pretty informative

Great walkthrough 😊

I have a sailboat and finding the right a/c and a functional setup is difficult. This looks like a great setup ! Finding the right home and venting for the unit needs to be thought out and doable. Hatch type units are not available,potential R/V units fitted to the a hatch may work ? The other option is a permanent A/C unit in , accurate placement will be the key.

If you have enough solar and lithium storage a residential mini split would be a better option. I’ve seen them on cruising yachts recently with the condensing unit on the deck and covered when moving . Cycling on and off too often is classic oversizing .

I’m only half way through the video and I haven’t read all the comments, but something you said around the 8:15 mark got my attention, and not in a good way. You said that it has a mechanism to splash condensation back into the airstream. In my understanding of a/c ( I lived on the swampy gulf coast of Texas for almost 30 years) the last thing you want is the humidity put back in the air. For at least 2 reasons: 1. Dryer air feels cooler against the skin. 2. Damp air takes more energy to cool, so why do it over and over?. 3. Damp air makes or keeps fabrics damp (think bed sheets) 4. Damp air promotes the growth of mould. If I owned a machine like that, the first thing I would do is disable that splash/ recycle feature you mentioned. Get that air dry and cool, that’s the meaning of air “conditioning” it’s not just air cooling.

@svfairisle

7 ай бұрын

Yes it puts the water back into the air... but on the outlet side!!! AC's run as two seperate circuits either side of the condenser plate. The compressor cools the plate and air is drawn in from the cabin passed over the plate to cool (and condense out some moisture) then go back to the room to cool it. On the warm side of the unit a fan pushes air across the heat sink and the water thats been condensed out from the other side. So warm moist air goes out through the port hole.

Good info. Air-air heat exchangers have some advantages (portable), but I’d love to see a water-air heat pump that could be plumbed into the hot water system…cool nights and hot showers in the morning😉 If this is something y’all will keep, will you wire it into a 12v bus (converter needed as I think you are a 24v boat) and find a “mounted” location for semi-permanent install?

@svfairisle

7 ай бұрын

We are a 12v boat but the unit cannot run off 12v (or 24v for that matter) it either runs off mains or it’s own battery or the high capacity DC outlet from the modern EF units like the Delta, So it’s quite versatile and could effectively run off 12v because you can charge it’s battery from 12 vis the XT60 plug. It would be nice I suppose to have a low cost option without and battery’s which could run direct fro DC. The BourgeRV come closest to this as it’s able to run direct from 24v

I am wondering if the solar panels would be sufficient to power the device during the day, even if it cannot charge the battery simultaneously. The reason I ask is because during my time in Lanzarote, the heat inside the boat was unbearable during the day, but it was quite pleasant at night and didn't require cooling down. It would also seem to me to be an inefficient way of having it plumbed in if is constantly removing the heat and humidity from the outside air, would it not be better to have the air recycled from inside the cabin a bit like you can set on a cars airconditioning.

@svfairisle

7 ай бұрын

Yes you can certainly charge the device at the same time as using it. And recycling the air would definitely be the best way. That is what was happening when I had the unit inside. The pipes going in and out of the porthole were just cooling for the heat exchanger ie air pulled in to cool the plate which is then sent straight back outside a lot hotter. The cooling component is cycling around in a closed loop on the other side of the plate pulling in cabin air and spitting it out cooler and dryer

@evinwhiteson4902

7 ай бұрын

I dont believe these 5,000 btu units is enough to cool anything but a small aft cabin. Maybe. I have the 4,000 btu last years and its worthless here in thailand. But thai is hot.. 10,000 btu in my opinion is minimum for any boat .

Hi! Thanks for all the great videos. I have question about the add on battery, its NCM do you have any concerns with that chemistry and using that on a sailboat vs. using the other EcoFlow batteries that use LFP chemistry. What has made you comfortable with NCM for this application. Thanks I'm trying to decide if I get the add on battery and or EcoFlow Delta 2 Max to pair with the Wave 2 on my boat.

@svfairisle

2 ай бұрын

Very good question. I much prefer LFP batteries on the boat and if you have any concerns then the way to go is using the Delta 2. However although for a house bank the only option is LFP of course, there’s far too many spurious charging sources and loads that are specific to each boat, with the amount of safeguards built into units like this and the fact it’s performing a specific function that’s been tested in the factory give it a good layer of safety. plus the fact that there are thousands made exactly the same so any fault will be reported should give confidence. Having said all that though I’m very careful with mine. I would never leave it charging unattended ( a problem while charging is by far the most likely ) and I do not pack the Battery away with the unit, it’s stored alongside the Delta where I can see it. ( the eProp battery lives there too) The most dangerous batteries I have on board by far though are the drone battery’s and they all live in fire proof cases, many people forget about these.

@stewartmarcano3493

2 ай бұрын

Thank you so much for the reply. That gives me a lot more comfort about getting the add on battery (which I would like to do), I think those are all good points about the risk assessment and best practices with the add on battery. Also about camera / drone batteries too to be stored in fire proof cases. I know according to your most recent video you are in Trinidad (don't know if you're still there) wonderful wonderful place, my father was from Trinidad - wishing you the very best stay and thanks again! @@svfairisle

13:00 can you set the intake hose from inside the boat at a place where hot air accumulates like top of room and outlet through the window like you did. Wouldn’t that be more efficient to expel the hot inside air and then cool the already cooled air from inside vs taking hot air from outside and cooling it?

@svfairisle

2 ай бұрын

There are two separate systems circulating air. One is the actual air conditioned air which it needs to pull in from the room and then spit out colder and less humid, and the second system takes outside air to cool the plate then spits it back outside. So in the bit you were looking at the hoses are for outside air. It would be possible to attach a third hose to the inlet of the AC side and have that high up and away from the unit which would help.

Can this unit stay outside (is it “rain proof”)? We are trying to find a good way to use it on our boat in Grenada (hot and humid) and haven’t quite found the perfect way. I would prefer for it to be outside of the cabin but recognize that next to frequent rain squalls, we would also have to find a way for it to use the inside air, cool it and then send it back in. Also : don’t underestimate the weight of the unit with the battery attached. Taking it out, moving it around etc. Takes a bit of work.

@svfairisle

7 ай бұрын

Yes it’s apparently completely rain proof, I’ve only had it out in showers though. I did find it to be more efficient inside though so I’ll be using it in the cabin with the hoses taking the exhaust and intake for the heated air off the back end of the unit

@ludwighoogstoel3614

7 ай бұрын

Thanks for replying (good luck with the mast base)

I have last years 4,000 btu model on my tayana 37. Its a piece of junk it..cost me 2,400.00 i actually have 2 of them cause a friend also gave me theres cause they suck. I have 1 battery but 2 units.. It needs 60 amps to charge the battery on the unit and it takes 2 hours. And lasts 3 hours. The aircon alone needs 40 amps on the inverter. That would be ok if it even worked. My boats not that big. Maybe this unit works better than my 2 units i have. Mine are older last years and tbe first generstion. My 10,000 btu portable aircon works really well.cost 300.00 but not at anchor. But the eco flow is not the way to go at all. Its a waste of 2,000.00.

@svfairisle

7 ай бұрын

Yes the first version sucked! I steered well clear and Ecoflow pulled it very quickly. If I were you I would talk to head office and see if you can get a deal on swapping it for a mark 2 version. I think they will be sympathetic, they know they messed up with the first one.

@evinwhiteson4902

7 ай бұрын

@@svfairisle I might be interested if they can get to 9,000 btu. Then its in the ballpark for a 37 footer. I should have just spent my hard earned money on a proper 12v unit by marlbro. I almost bought there 10,000 btu for 5,500 but i did not want to go lithium also at same time for another 5,000 to run it all night. so i tried eco flow as a hail mary as it had its own battery i thought would be great..5100 btu might be enough to cool youre aft cabin. My complaints are so others dont get screwed or buy a used unit. They already discontinued any spare parts for the 4,000 btu so if youre battery dies or whatever you out of luck.

@svfairisle

7 ай бұрын

I see what your saying. It's not magic though you cant get something for nothing, 5100BTU's for the small draw the mark 2 demands is an excellent achievement. It means having a large sleeping cabin cooled is entirely possible on DC. Having the whole boat air conditioned is still a job for a generator I think

On the US link, I cannot seem to find the AC unit you show. Is it EU exclusive?

@svfairisle

7 ай бұрын

No, should absolutely be available in the US

@captbryanfromsailingsarpedon

7 ай бұрын

Very odd. Maybe it is a regional thing. 🤷🏼‍♂️

@captbryanfromsailingsarpedon

7 ай бұрын

Even searching their Amazon storefront this unit is absent. Not sure what to make of this. It appears to be a limited release of some sort. In US storefront it is showing only the Delta and River product lines…

€1200!!! You'd be better off with a small ac window unit. €300. Bigger, of course. But most small units will run off your inverter and with enough solar, mike minimum 160pw, it will run 4-5 hours.

@svfairisle

7 ай бұрын

You might just be able to save a few pounds on the initial cost but the price you pay in the electrical demands will mean any proprietary unit will be unusable on a boat unless you have a genset and are willing to run it 24/7. That has been the limiting factor for AC on a boat for years, this unit provides a way to get around that

I will build you a 12v AC unit that will do 6000 btu at 29 amps @ 12vdc

@svfairisle

7 ай бұрын

Well thats 348w which is substantially more than this unit is taking!

@svsalserenity4375

7 ай бұрын

@@svfairisle Yes is that measued at low speed? , there sight says over 800 watts. What does the unit draw at full AC power ? Ok just found another site that said it draws 495 watts at 5100 BTU. You almost have to put a meter on these things as the compressor warms up they draw more power just like a alternator becomes less efficient as it gets hot. .

@svfairisle

7 ай бұрын

@@svsalserenity4375 I found it difficult to coax it into drawing more that 250w, to be honest I think i need a tropical night with heat and humidity to really test it. It cooled really well with the conditions we had with very frugal draw which is a good sign but maybe there's another level it has to ramp up to in heatwave conditions, we will see.

@svsalserenity4375

7 ай бұрын

@@svfairisle Im impressed , love to get a look inside of one of those units .....see what they are doing .

@evinwhiteson4902

7 ай бұрын

I have the older unit 4,000 btu. With a battery. 2,200.00 not including shipping. Save youre money. These units are just not big enough for hot climates. 6,000 is not big enough either. 9,000 maybe for a small cabin.

Please stick to the sailing ....

@svfairisle

7 ай бұрын

Unfortunately we are stuck on the hard with a mast problem at the moment. That is all a part of sailing full time i'm afraid. people think it's all G&T's and sunsets but that is not the reality.