Vario Series 24000 BTU Mini Split AC, 2 Ton 21 SEER2, Work with Alexa and Wifi, 230V Ductless Inverter System, Cools Up to 1500 Sq.Ft, Pre-Charged Heat Pump and 16.4ft Installation Kits

This mini split is perfect. Super quiet, it looks good, fairly easily to install (it does take two men) and most importantly- it cools! My shop is about 400+ sq ft, one larger room, a little bathroom, an office and storage room. It all stays cool. I did buy a slightly oversized mini split. I think that might make the difference if all the little rooms are cool, not just the larger. I would install a new set of batteries into the clicker right off the bat though. The batteries provided jist arent worth a flip. But- it’s a fantastic little minisplit. Does the job very quickly. And this is in the middle of the day with Texas heat. Easy to recommend.

I have installed several mini splits. Just for myself and family. I'm not HVAC certified. If you have any mechanical ability they are easy to install. I've done Della and Senville. I will say that Senville seems to be better built but Della is cheaper. I guess it comes down to what you wallet can take. My Senville dropped my summer cooling cost down from 300+ a month to 120. Heating in the winter even more. I have the 24000 and 18000 btu units. My home is large. Built in 1918. The two units do a wonderful job. Remote controls are easy to understand. I wish I had these things back in the 90s. I definitely would recommend and would definitely replace the units if need be.

I should have gotten one of these years ago. Install was easy if your handy. This works well beyond my expectations for cooling and heating..just amazing. Super quiet air flow. I highly recommend!

I bought the 24k mini split with a wall mounted head unit. Unit arrive with the cardboard box a little beat up but the unit itself in excellent condition. Delivery was exactly when predicted. Setup was straightforward, took most of a day but I had to run the electrical service also. Templates were clear and easy to follow, mounting brackets were easy to use and level, only thing not specified in the directions was the minimum line length for the unit. Della customer service immediately responded that for this specific unit is 9 feet. Evacuation and flaring were straightforward with what appear to be good quality fittings on the unit. The line cord is stranded so you might want to tin the ends when installing. The plastic through wall sleeve was pretty light duty - I ran my line set through a PVC pipe instead and the rubber pads for under the unit do not look like they will stand the test of time when installed on my wall bracket, but everything else seemed pretty decent quality for the price point. The unit has a strong blower, with a lot of options and it blows very cold even on an 87 degree day. Lots of features and wifi integration that I have not yet explored. I am giving this unit 5 stars for value and I will update this review if anything happens that changes my opinion.

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.

Very nice unit, good installation instructions. Is not a dyi unit as the line set has to be vacuumed. Quiet and works well.

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.

This product is a challenging installation. I suspect pro HVAC techs are overwhelmed with calls for DIY failure. I was successful and the minisplit cools perfectly. It will be a couple months before I can test heat in my area. The outside unit is so quiet I had to put my hand on the case to tell if it was running. I had a problem with the optical remote control. I contacted Della and they responded to my email on a Sunday night on Labor Day weekend. Who does that? A new remote was sent out very quickly and everything works excellent. If you are an experienced DIYer and you want to try install........I suggest getting a bottle of nitrogen and pressure testing the piping before releasing refrigerant. I think leak testing with refrigerant is a hack, get some nitrogen. its dry and good for the pipes