DELLA Vario Series 9000 BTU Mini Split Air Conditioner, Work with Alexa, 19 SEER2, Energy Star, Cools Up to 400 Sq.Ft, Ductless Inverter System, Heat Pump Pre-Charged and 16.4ft Installation Kits

I purchased DELLA 9000 BTU from Amazon. The unit was delivered on time, perfectly packaged and clear instruction how to install it. Installation took a little time but was not too complicated. I decided to run the system before buttoning the system for the final time. I run the system for about a day or so and it work great. My room is about 340 sq ft and it was cooled down very quickly. The system worked fast and quit. I finally got a good night sleep in comfortable and quit environment. During the weekend I disconnected the system, configured for the final time, reconnected the electrical cables and the pipes. Then I run the final test to vacuum the system. When running the final test I used a bad cable (purchased from a store) that had a bad connector. As the test run the coolant in the system leaked through the bad connector of the cable. I was very frustrated and called DELLA customer line for help. I did not hope that they can do something for me since the malfunction was entirely my fault. DELLA customer service representative was very curious and kind. I could not believe that she offered me to replace to outside unit for no additional cost. It’s extremely rare to get such an exceptional customer service. A great system that cools down and warms up your house, works through wifi and Alexa and run very quietly. I highly recommend DELLA to anyone who is looking for an excellent AC system and for great customer service. Thank you for everything. Performance, efficiency, size, cost.

Easy to install nice instructions cooled are whole living room and most of downstairs and it will do heat also and that is good down till 32 degrees will work below that but not well

Della had a good product but ruined it with senseless feature removals from their app. I bought two of these heat pumps for different rooms and enjoyed them quite a bit, until Della ruined both of them with """updates""" (really more like downgrades) to their app which I never had the opportunity to decline. You used to be able to set up two types of events: scheduled and tap-to-run. Scheduled could take place when specific conditions, like temperature or time of day, were met. Great feature right? I thought so too. But I guess Della didn't agree, because for some reason, they completely broke "tap-to-run" events. You used to be able to set your heat pump to blow upward, mostly up, ahead, mostly down, or straight down. You used to be able to set your heat pump to blow left, straight, right. Nice to have such finite control over your device right? I thought so too, but Della disagreed, and removed the ability to control it in any way besides altering toggle. You used to be able to set your heat pump to "Generator Mode" so it could consume either 30%, 50%, or 80% of its usual electricity. Great feature right, especially for those days where it's just a little warm and you want to save energy without running it on full-blast? I thought so too, but Della disagreed, and removed the ability to toggle generator mode. Those are just a few examples. The app had tons and tons of useful functionality. They removed it all and now literally your only options are "Oscillate Left and Right" and "Oscillate Up and Down". They completely ruined their own device because they couldn't stop themselves from over-simplifying their own app into uselessness. Buy from any other company. Preferably one that actually knows how to develop an app properly.

Third time turns out to be a charm. First system I purchased (different brand) was delivered without the inside unit. Amazon never located the missing carton so it had to be returned. Second system (also a different brand) appeared to be low on freon. When I opened the freon valves, no sound of moving freon and no change in pressure on my manifold gauge. Outside unit would not come on. I emailed the manufacturers customer support and the next morning submitted a request via their website. That was last week. Still no response from them. So, the second system was returned. I chose Della this last time because they advertise their customer support. The installation went exactly as it should have and the unit is working flawlessly so far. As others have said, it is quiet both inside and out. Easy to sleep with it running on quiet setting. It is fully featured with the swing capability for air flow both horizontally and vertically. Air is cold in cool mode and quite warm in heat mode. I especially like the app. If I wake up cool or hot in the middle of the night, I can adjust any settings without having to get out of bed and find the remote. As with other systems, installation requires a vacuum pump and manifold gauges or a vacuum gauge. (Lots of videos on YT for the entire process). My manifold gauges were old and designed for 134a in cars, so I purchased an inexpensive set and an inexpensive vacuum pump on Amazon. Both worked great. I also did not like the extra line length laying around outside, so I purchased a inexpensive flaring kit (on Amazon) and shortened the lines. It was easy to do and I am pleased with the end result. If you want to do the same and have no experience with copper tube flaring, suggest you cut the lines a bit longer than you need so that you can make more than one attempt. My first attempt was not good but second time was perfect (or close enough). Lots of videos on YT on how to properly flare a copper line. One thing I did not pick up on YT was the proper technique for reaming the line after cutting (with the proper tool). I was much too aggressive in my first attempt. Very little pressure is required. A finale humorous note: these Chinese companies seem to use the same printer for their instructions - with different covers for different brands. Both the second system and this Della had the exact same instructions - down to the grammatical errors. May 2025 update. Have now been through an entire heating season. On an especially cold day (for us) - in the 20s - I tested the inside temp. It was 112 degrees coming out of the louvers! Impressive! Have only used it occasionally for cooling but am extremely satisfied in both heating and cooling mode. I plan to buy an 18000 btu for our lake place when my old unit dies.

I have a studio condo in the French Quarter that had an existing, old, mini -split. While it still worked, I wanted one that I could control remotely. Got a quote from a local place and it was over $5000 to replace. What??? Found this on Amazon and was surprised how inexpensive they are. My son helped me install and while I have no HVAC training at all, he is familiar with how to use the gauges and vacuum, but had never done a mini-split before. Watched a video on YT that basically walked through step by step. We did have to purchase an r401a fitting for the vacuum, but that was all. Took us 5 hours to install from removing old, to installing the new. That included time to carry the new unit up to the 3rd floor and the older and much much heavier unit downstairs! The app was easy to install and setup, it works great (even better than the one we replaced). This condo is just over 200sq/ft and this unit is perfect for that.

This is a great product real quiet but not quite the 5 stars since it does not have clear installation instructions for us DIYers. I had to do a lot of research to find out how to install it, either that or read the instruction manual that came with it but now days who reads manuals any more. They need to create a video to tell you how to install it, doesn’t need to be real detailed but just point you in the right direction.

Installed almost one year ago. It works great to cool 800 sq ft but that’s the limit on a hot La. Day. The heater works even better and kept us warm on one of the coldest days of the year. Ok it was 30 degrees but we cancel birthdays when the temp is below 40. Not me I like cold weather! Easy install but consider changing copper tubing fittings and watch a Della specific install on you tube. And get the brackets for outside units to attach to house. Keep the coil off the ground so it stays clean.

I want to recognize Fernando Vasquez from Della Support for truly saving the day. Before doing so, I’d like to provide some context. I previously purchased no name mini split systems from eBay, and in just over a year they began to fail. Determined not to repeat that mistake, I thoroughly researched mini split manufacturers with strong reviews for both hardware quality and customer support. During my research, I came across Della. Fast forward to 2025: I purchased three Della units, all of which worked perfectly. However, during a recent cold spell here in Florida, one of the units failed to produce heat. It took a bit of navigating through Della’s support channels, but I eventually connected with Fernando. He took the time to listen carefully and acknowledge all the troubleshooting steps I had already taken to confirm the unit was defective. After reviewing everything, he fully covered the unit—something I am extremely grateful for. I chose Della specifically for the assurance of quality support if I ever needed it, and that turned out to be the best decision I could have made. Thank you, Fernando, for your exceptional help.