Effortlessly manage the climate of large, open-plan spaces with the Vario Series 18000 BTU system. This high-capacity ductless mini split air conditioner is engineered to provide consistent comfort for areas up to 1000 sq. ft. while maintaining an exceptional 21 SEER2 efficiency rating. The powerful heat pump delivers reliable warmth in severe cold (down to -4°F), and its 32 dBa operation ensures its presence is felt, but rarely heard. A full professional installation kit is included.
How Long Will It Take for My Order to Ship? It normally takes us 1 business day to arrange the shipment. During peak seasons, it will take 2-4 business days to arrange the shipment. We provide free ground shipping, so there are no additional charges for shipping and handling.
How Do I Track My Order? Log into YOUR ACCOUNT, and you may see each individual order that you’ve placed with us. Select one that you want and you’ll be provided with all the details you need about the order.
Once your order is on the way you will receive a notification email.
What Should I Do If I Haven’t Received My Order? Please contact us immediately.
For the full shipping policy, click here to view our shipping policy. Return
We offer return guarantees to ensure your satisfaction with every DELLA purchase.
DELLA provides comprehensive assistance for all orders within 30 days of purchase. If you're not satisfied with your product within 30 days of purchase from dellahome.com, you can return the product for a full refund.Products must be returned in their original operating condition, including all accessories and packaging.The customer is responsible for return shipping costs.
If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts free of charge. DELLA will also cover all shipping expenses for the delivery of replacement parts.
Need to Start a Return? To initiate a return, call us at (800) 863-4143 or contact our live chat team.
For full return terms, click here to view our return policy.
Standard Warranty (1 Year): Products are covered by a 1-year limited warranty from the date of purchase.
Extended Warranty Program: Customers whoregister their mini split unit within 100 days of purchase will receive complimentary lifetime parts coverage.
Registered Product and Non-professional Install: If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts free of charge. The customer is responsible for all shipping costs.
Registered Product and Professional Install: If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts free of charge. If, after parts are replaced, the customer’s unit is still malfunctioning and the customer has a licensed HVAC tech's defective report, Della will take care of the customer at its discretion. In any event, the customer is responsible for all shipping costs.
Unregistered Product: If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts. The customer is responsible for the costs of all parts and shipping.
The Vario Series is the ultimate all-rounder for the modern homeowner. Boasting an impressive SEER2 19 rating, it’s engineered to keep your energy bills low without compromising on power.
Designed to perform in a wide range of climates, the Vario provides reliable heating down to -4°F, making it the perfect fit for the majority of U.S. cities. High-end efficiency meets a price that makes sense—Vario is the smart, sustainable choice for year-round comfort.
Powered by MightAir X
Top performance, energy smart design
50% more efficient energy savings
Cleaner air, healthier living
Durable design, lasting comfort
Comfort for Hot Summers and Colder Winters
Built to deliver dependable heating and cooling across a wide range of outdoor temperatures for year-round comfort.
6 modes for max comfort
Auto mode
Maintain a comfortable indoor temperature by automatically switching between heating and cooling as needed
Auto mode
Maintain a comfortable indoor temperature by automatically switching between heating and cooling as needed
Wherever you are
Control your comfort, your way
Set schedules and timers through the Della+ app to match your daily routine.
Take control your way through the app, remote, or voice. Award-winning remote design makes every interaction seamless.
Your comfort adjusts automatically as you come and go.
Get help anytime with live chat or call, directly in the app.
Control your AC hands-free with Alexa.
Which series is right for me?
Model
Efficiency
HSPF2 Rating (Region IV)
Refrigerant
Climate Range
Energy Rebate
Shop Now
DELLA Vario Series 18000 BTU 21 SEER2 Mini Split Heat Pump AC - Up to 1000 Sq.Ft.
SEER2 21
9.5
R454B
-4°F - 122°F
DELLA Econo Series 17000 BTU 17 SEER2 Mini Split Heat Pump AC-Up to 1000 Sq.Ft.
This unit uses R454B refrigerant. This unit comes pre-charged with R454B refrigerant for up to 24.5 feet of lineset. If your installation does not exceed this length, no additional refrigerant is needed.
R454B is a new-generation eco-friendly refrigerant that complies with EPA regulations. It can replace the original R410A models, offering better performance and greater energy efficiency.
Yes, you can purchase a longer lineset separately. If you buy it together with the Single Zone Mini split system, you’ll receive a 10% bundle discount. Please note, if the extended lineset is longer than 25 feet, additional refrigerant will be required. Make sure to consult a professional HVAC technician for proper installation.
In auto mode, the unit automatically switches between cooling and heating to maintain the set temperature. You can adjust the target temperature manually—typically between 60°F and 86°F —depending on your comfort.
The mini split condenser and lines are not pre-vacuumed. You will need to vacuum the system during installation to remove air and moisture before releasing the refrigerant—this is essential for proper operation and longevity. You can use our Rental Kit Service, which includes all the necessary tools for vacuuming and installing your mini split.
Talk to an HVAC expert
Not sure which system is right for your home? Our experts can help with sizing, installation, and product selection.
Technical support: Mon - Fri, 8 AM - 3 PM (PST)
24/7 live chat for general question
Installation went super smooth! Machine works much better than the ZenAire I had before. My neighbor really appreciates how quite this one is compared to the previous one he brought over some fresh caught Hogg fish to thank me.
Installed ourselves. The Della Vario 18,000 out performs the previous Daikin we had. Della customer and tech service has been great to answer all our questions.
This is the first mini split I've ever installed and it was pretty straight forward. I installed a sub panel and the cutoff switch, bought a vacuum pump and all and I felt it was easy enough to put another one in. In my research I found that Della was an excellent brand so that's what I went with. Im starting to finish the bonus room i put this in hasn't been finished yet so it's got the vents to the outside and the mini split is cooling the room down with it being 82F outside.
Installed myself and was pleased with the performance. Waited one year to review it for reliability purposes and it works flawlessly. Takes knowledge of electrical installation and you need to vacuum the system down before releasing the refrigerant. I did cut and flare the lines so they didn't look like they were installed like a 10-year-old. After that leak tested with nitrogen to ensure there were no leaks then the lines and head unit for an hour. Released refrigerant and can say this unit works as well as the expensive unit I have in another location. The heat works great as well. 18000 btu unit, 1200 square feet, and New England weather. Gets well into the 90s and below zero in winter. During extreme cold starting at about 15 ferenheight or so efficiency of heat diminishes but that's what the wood stove is for.
Della is a great place to order a mini split. The mini split is awesome! Fast Shipping and very well packaged. The unit is surprisingly quiet and works great! It also is very nice looking too. We had a garage fire and lost everything. As we got the garage rebuilt, we decided on a Della unit to heat and cool it. This is much safer than using anything propane or gas and we are hoping more economical too. The only problem we had was with the installation. We are both 70+years old and had a bit of trouble getting the inside unit up on the wall with just us. We did get it but not as easy as some people reported. We did have help with the rest of the install from our HVAC person, he did all of the electrical and refrigerant line work which made for a much neater install.
Thank You, Della, for such an amazing product.
When Della finally understood my predicament with my contractor, they were very accommodating. The contractor had 100 days to register the units and he did not so the warranty was not valid. I tried to get the contractor to at least send me the receipts but he would not. When I won my case against the contractor, they agreed to test the equipment to see what was wrong and if possible fix it or replace. And they honored their agreement and with a small fee, shipped me a NEW UNIT in return. I am so grateful and happy! Not to mention how beautifully the Della works! Thank you Della for giving us a refreshing and comfortable atmosphere. We appreciate all the good service that has finally come to us. Blessings to All!
Great unit! Installation went smoothly. Had a couple of questions and support was wonderful. My brother bought one so I'll be installing another one soon.
Excellent customer service resolving shipping damage to the outdoor unit. I contacted Della about the issue, sent pictures of damage and the replacement unit arrived in a few days. Build quality looks good and looking forward to the installation.
I installed a dual head back in May in my sister-in-law's cabin. It was un-insulated but the dual head of 18.000BTU kept up with it!
I came home in June and decided to install the 12,000 BTU mini split in my garage. It took me and a buddy about 1 day to install it and the electric supply.
It's worked awesome! I do have my garage insulated and finished. It's 82 outside now (not too bad for August) however it's 74 in my garage which is what I set it to.
Last month's electric bill doesn't count because I did not have a full month. However, this month did. and given slight variations my electric bill was not hit. I've been out here every day generally after 12.
I'll be out here until, 9-10P with the air on!!!
I'm totally happy with this purchase and I advise anyone who works or hangs out in the garage to get this!
Previously in the winter, I had a propane tornado heater in my garage, and it generally cost me about $30 a month to heat. I'm looking forward to seeing how this impacts that cost this winter.
I will follow up around the December time frame.
I have installed several mini-splits. Just for myself and my 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 your 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.
Honestly, the best product for the price. This is actually my second Della Unit. I have one in my attached garage/gym and had one installed in my detached garage gym. So the 18,000 btu unit was $899.00 and I paid a plumber $500 to run the 220, lines and install so for $1,400.00 I can keep my garage at any temperature that I want. I don't use the heat function so I can't speak on that but the AC function is killer. I mean no matter what the temperature is in the garage I can get it as cold as I want it. It will drop down about 7 degrees an hour. Super quiet, super efficient and super fast. App is not amazing but it is pretty user friendly and works well. Overall, happy with this company and their products. Considering they are close to half the price of some of their competitors it makes it worth it. Do I need AC in my garage? No, but it sure makes me a lot more likely to wax my car, spend time in there and do things in there. A 1st world luxury that is not needed but since I insulated my garage it makes it awesome. So, well worth the investment. My garage is 676 square feet and 12 foot tall and this unit has zero issues, would totally recommend.