DELLA Vario Series 12000 BTU Mini Split AC, Work with Alexa and Wifi, 20.5 SEER2 Cools Up to 550 Sq.Ft, Energy Efficient Ductless Inverter System, Heat Pump Pre-Charged and 16.4ft Installation Kits

Finally got around to the install, for the attic mini-split. This was a re-install, of a previous mini-split (different brand) so much of the task (drain line, hole in the wall, 240v AC was already in place from the previous unit.For the install, you should definitely double or triple check the line length. I was right on the edge of my estimate and had to move the mounting hardware a bit, to accommodate the shorter line set. Bought a relatively cheap HVAC vacuum pump & gauges here on Amazon, and watched a few videos, to confirm the steps of the process.All in all, the *actual* time for the install was about 3 hours. Some additional time was spent removing the old system, and moving the mounting hardware, but that should not count against this install. If you are starting absolutely from scratch, assuming you have the 240v AC in place, a talented handyman could probably complete the process in 3 hours.All of the components were present, as expected. The wiring schematic was easy to follow. The system is much quieter than my previous unit. Dollar for dollar, this is an excellent product, with a good installation manual, and all of the required hardware to get you through the end of the install.

The media could not be loaded. The unit arrived well packaged with no damage. I bought the 24,000 BTU SEER 19 model. It can be powered from a 20 amp or 30 amp protected 240 Volt 2 L1+L2+GND power feed. The unit uses 15 Amp or less at 240 VAC which is impressive efficiency for a 24,000 BTU unit. Both indoor and outdoor units are a lot quieter than I expected. Neither has any strange vibrations or noises coming from them when running.I did self installation and you must have a second person to set the 90 lb. outdoor unit and to hang the 60 lb. indoor unit for the 24,000 BTU size. Be sure to wrap the line set tight so it moves freely thru the 70 mm thru hole you pass the line set, drain, and indoor power cable thru. I did the default piping mode 2 where the thru hole is directly behind where the drain, lineset, and power connection is located on the indoor unit which maximizes the amount of lineset and power cable you have on the outside to reach the outdoor unit. IMHO it also makes installing the indoor unit easier.I used a single stage vac pump and a manifold gauge with R410a adapters to self evacuate the line set. The instructions are very clear for what steps to follow. I used a standard automotive 3/8" socket drive torque wrench with 3/8" crowfoot adapters. I'm sure there's some error in the actual torque but it gets you in the ball park so you don't under or overtorque the flare fitting connections. The huge price difference between Della and Mr Cool Mini-split systems made up for spending $ 100 for a vac pump and manifold gauge set so I could avoid paying a AC tech to come out and do the Della as a self install.The manual said mount the bottom of the indoor unit 98" ( 8' 2" ) from the floor. I called the Della install support # and they said NO it does not have to be mounted that high, and just needs to be mounted so that the top is at least 8" from the ceiling. I followed standard mini split indoor unit install practice and mounted the bottom of the unit 6' 0" above the floor which put the top of the 24K BTU unit 7' 2" above the floor.This model has WiFi based internet connectivity and a good smartphone app that gives control over all the important functions. It also allows you to pre-program daily schedules for when to power the unit on or off and what temps and fan speeds to use. I used the iPhone Della+ app.Was able to connect it to my WiFi only by using the manual connect method, but the Della+ iPhone smart phone app led me thru it.The CON items I'll note: You remove all the protective packaging from the indoor unit in order to connect the electrical cable that goes to the outdoor unit. It is not connectorized. So you have to be careful not to mar the plastic on the indoor unit as you continue installation after connecting the electrical cable. The unit modes are not displayed with words, only with small icon symbols that are not obvious to me. You will want to make a copy of the Remote Control Display manual page for reference until you get used to it. The unit is close to worthless without the remote - be SURE to not lose it. There is a wall holder so you can put on the wall right next to the indoor unit. The unit has an Alexa skill set but the current one for this "TL" series mini split ( as of July 2024 ) is close to worthless as it only allows the unit to be turned on and off from Alexa.One final CON: The US federal government changed the requirements for getting the 30% federal tax credit for 2024 and this unit does not meet the criteria. There is a new series of Della mini-splits that does meet the criteria but they are not yet listed for sale on Amazon. The new requirement to get the 30% rebate for 2024 is a Heat Pump HSPF2 rating of 8.5, and an AC SEER2 of 15.2 . This unit's HSPF2 heat pump rating is slightly less.

Installation was a breeze. Unit is working flawlessly. I love that it connected to my Alexa and I can voice control or use the Della app. I got the smaller 110v model for an upstairs bedroom, and it not only cools the room very well, it has lowed the temperature in the landing and it helping the central hvac unit keep the rest of the house cooler, and that is nice since we are in a 1905 with poor insulation. I am going to purchase a second Della for another bedroom.

What an easy install! I watched many instillation videos which made the process easier. Takes a 2 3/4 keyhole drill bit, screw gun, 2 crescent wrenches ( adjustable wrench) and a Phillips screwdriver bit for your drill. The wiring is so simple, 1 23 4 all numbered. Fortunately I had power ran outside to an old unit. The A/C hose is 16’, so I measured the install of the interior unit accordingly. The 220 red went to 2 the black went to 1 and the other wire was the ground. To vacuum it TAKES a blue hose ( not automotive ) but the old style a/c fitting. Vacuum and open refrigerant ports. Don’t get overwhelmed look at multiple videos and get familiar with the process.