TOSOT 24,000 BTU Mini Split Air Conditioner, Wifi Enabled Ductless Inverter Split System AC Unit Heating System, Compatible with Alexa - 22 SEER2 230V

This review is for the 24,000 BTU, 240 Volt unit. This is a very well built unit. Installation was not as straight forward due I think primarily to the fact that this is probably not marketed as a DIY unit and the instructions are not as detailed. I had an error in wiring the unit which customer service cleared up quickly after I reported the problem by having me send pictures of the wire connections between the outdoor unit and the inside unit. They replied within a few hours (business time, unfortunately it was just before the weekend when I sent them the requested information) and I had my instructions on how to fix just after midnight Monday morning. Once I changed a couple wires around the unit started and ran normally. The unit is in a large bedroom and I set it on 61 degrees F. Within a few hours this room is very cold and in the unit is in fact is cooling much of the rest house adequately (84 F) where the outside temperature is currently 96 F. The outside unit runs very smoothly and remarkably quietly. I am a TOSOT fan, both for the product and the support. The inside unit is very quiet and has nice features available via the remote control to control cooling and fan features. I have not tried the WiFi capability yet.

I like doing projects around the house. But I am in no way a pro. I found this install to be pretty straight forward but challenging. I followed the instructions as best I could. As usual, the instructions leave a lot to be desired. But after watching a few YouTube videos I put the whole thing together without much trouble. I wanted to mount the condenser on the outside wall but was afraid of hearing it rumble. It is so quiet that a wall mount would not have been a problem. The exhaust fan is louder than the compressor. I had an electrician install the disconnect where I needed it. I connected the line set and wiring to the inside unit and pushed them and the drain hose through the 3'' hole I had drilled. My wife stood outside and guided the copper lines while I hung the inside unit on the wall. The instructions said to wrap all the lines together beforehand, but I just did a small section. I figured it would be easier to avoid kinking the lines if they were still separate. I gently pushed and bent the lines toward the path I determined they needed to go. Connected them to the compressor and pulled a vacuum on them. The cheap vacuum pump I ordered from Amazon worked great. I did order adaptors that were advertised to be specifically for a mini split. After removing the pump, releasing the freon and connecting the wiring it was time to test the unit. At first, I was sure there was something wrong. The lights and fan were on, but it didn't seem cold. Before I panicked, I gave it a few minutes, and everything worked perfectly. I am very pleased with this unit. Go slow, read the directions a hundred times and watch YouTube. You can do this.

EDIT 10/8/2025 - We've had this unit for almost 1.5 years now. We live in our RV full time on our property and went through two HOT southern summers and a mild winter with rare snow accumulation that lasted a few days. The minisplit has performed flawlessly. The heat pump works well in our climate and has "kept up" even in the single digits. It does struggle to maintain at those temps but that is expected with a heat pump with no aux heat strips. We have not used the propane furnace at all since we've installed the minisplit. We use the electric fireplace to take the edge off at times but it isn't really necessary unless it's really cold - and it's still more for comfort. We also use a small electric space heater in the back bedroom at night for additional comfort while we sleep. The best part is we have not had to get propane since we installed this minisplit and no more roaring furnace! The temperature stays pretty consistent unlike the gas furnace constantly cycling on and off. Propane is only used for the stove/oven. We've not encountered any condensation leaks or drain problems. But... whenever I install minisplits - I always mount the wall unit slightly tipped towards the drain. It's not enough to see with the naked eye, but enough to see it on the bubble of a level. This helps water drain to where it needs to. 100% happy with this minisplit. Original Review in Aug 2024: I installed this in a 42' destination travel trailer. The two ceiling AC units were fine, but they were very loud so I was looking for something more efficient, quieter, and something with a heat pump in hopes of reducing the use of the propane furnace during the winter. So being it is an RV, installation is pretty much the same. I was lucky enough to run the lineset down an interior wall so I didn't have to drill directly into the exterior wall. I used 25' of lineset so the original 16' wasn't used. The manufacturer was extremely quick to reply to my question regarding how much refrigerant to add to the added lineset length - which is .215oz per foot after doing the metric conversion. The condenser unit came a little dented on the face which looks like the compressor may have bumped the exterior during shipping. It would honestly be more trouble than it's worth trying resolve aesthetic damage through Amazon or the manufacturer. I would have pursued it if there was mechanical damage. You will need a 5/16" adapter to hook up traditional 1/4" gauges/hoses. And of course a good vacuum. I believe I was down to about 220 microns before I called it and that was after two flushes with nitrogen. Unit purrrrs. The condensor is extremely quiet. I do get a little hum or resonance from the inside and it could be because I have it mounted on the paper thin back wall of the RV, or maybe it's slightly out of balance from shipping and denting the side. The wire cage of the condensing unit shakes just a bit when it's running. I don't want to pursue this because I am not 100% sure the shipping damage causes the slight vibration/noise. The indoor evap unit runs so quiet... we love it. We can talk normally and watch TV at ease. The comfort is much, much better. Even with a slight hum from the condenser, it's so much better than the Coleman Mach rooftop AC units that are super loud and blows too hard. The cycling on and off would drive me crazy. This minisplit just purrs - and we love it! I can't comment how the heat works because it's still summer. But I am hoping it will do ok with our mild south-eastern winters. My only complaint or beef is the wiring diagram for the indoor evap unit. It is wrong on page 24 of the manual, as others have pointed out... but nobody stated how to correct it! Should I? Of course! Let me save you a little bit of pain... MIRROR THE WIRING ON THE INSIDE UNIT TO THE OUTDOOR CONDENSER. The diagram for the condenser is correct. Wire the indoor unit the same. So look at the wiring diagram for the outdoor condenser for both. L1 - S - L2 is correct for both. Page 24 says L1 - L2 - S and this is WRONG. I got this unit on Amazon Prime day with 20% off, making it a decent deal for an 18k unit. I am a licensed/EPA certification HVAC guy who's been out of the field for a few years but I still have the know how and tools. Install can be done by anyone with a basic understanding of electrical and refrigeration. DO YOUR VACUUM. I cant stress that enough! And ALWAYS use nitrogen when brazing - but you'll probably using flared connections. Good luck!