Prices, ratings and stock were checked on Amazon on October 21, 2026. Specs from the older page are marked as such and were not retested.
The old Della 12,000 BTU mini-split is gone. Here is what replaced it, what the new SEER2 numbers mean and which voltage to buy.
Table of Contents
The Della 15.5 SEER Unit Is Gone
The old page reviewed the DELLA 12,000 BTU 115V, 15.5 SEER mini-split. Amazon returned a page-not-found error for the old link on October 21, 2026. Della still sells 12,000 BTU mini-splits, but under the Vario and Optima names and with higher SEER2 numbers.
15.5 SEER Versus 23 SEER2
The old unit was 15.5 SEER. Under the new test that is roughly 14.7 SEER2. The new Vario units list 20.5 and 23 SEER2. That is a big jump in efficiency. A higher number means a lower bill, though the gap shrinks with light use. Our SEER2 energy savings guide shows how to compare.
115V or 230V?
The 115V unit plugs into a normal circuit. The 230V units need their own circuit. A 230V unit is more efficient, but if the panel has no spare room, the electrician bill can eat the savings. Check the panel before you shop.
Here is where mini-split design is going: nicer looks, softer airflow and apps. Della is a good example. Its Optima line talks about soft, indirect airflow and heat down to minus 13 degrees. Looks and comfort are now selling points, not afterthoughts. Your living room wall will thank you.
3 DELLA 12,000 BTU Mini-Splits
Rechecked on Amazon on October 21, 2026. Prices, ratings and buttons are below.
Price on Amazon: $779.96 | 4.4 stars from 1,470 ratings (checked October 21, 2026)
The DELLA Vario 230V lists 12,000 BTU, 23 SEER2, 9.5 HSPF, pre-charged, with coverage up to 550 square feet, auto defrost and a smart sensor in the remote. It costs $779.96, with a 4.4 rating from over 1,400 ratings.
Price on Amazon: $799.96 | 4.4 stars from 1,470 ratings (checked October 21, 2026)
The DELLA Vario 115V is the same family on a normal outlet voltage. It lists 20.5 SEER2, Alexa and Wi-Fi control, 4D airflow and a 16.4-foot installation kit. It costs $799.96, with a 4.4 rating from over 1,400 ratings.
Price on Amazon: $949.96 | 4.2 stars from 245 ratings (checked October 21, 2026)
The DELLA Optima lists 24 SEER2 at 230V, soft airflow, heat down to minus 13 degrees Fahrenheit, Energy Star, Wi-Fi and Alexa. It costs $949.96, with a 4.2 rating from 245 ratings.
The downside is confusion. Della sells at least four 12,000 BTU units that look alike but differ in voltage and SEER2, from 20.5 to 24. The old page’s 15.5 SEER unit has no match on Amazon today. Expect more families of near-twin models, and more mix-ups at checkout. Match the voltage to the circuit before you buy.
Looks Matter, Up to a Point
The old page spent a lot of time on looks, and it is a fair point. A mini-split sits above eye level in your living room. Soft airflow matters too. A blast of air on your head ruins the comfort. The Optima listing calls out soft, indirect airflow for exactly that.
Hard Install, Still
The old page listed a hard install as a con. Nothing has changed. The kit includes a 16.4-foot line set, but you still need a wall hole, a pad or bracket outside, a vacuum pump and a licensed hand for the refrigerant. If a light blinks after the install, see mini-split blinking green light.
Size It Right
Twelve thousand BTU is one ton. That is about 450 to 550 square feet. Della lists 550 for all three picks. Check the room with the BTU calculator, and think about sun and ceiling height.
The Pick
Want high efficiency and know your panel can take 230V? The Vario 230V. Want a normal outlet? The Vario 115V. Want cold-climate heat and soft airflow? The Optima. For more, read the best mini-split air conditioners and the guide to single-zone mini-splits.
FAQ
Is the DELLA 15.5 SEER mini-split still sold?
The old Amazon link returned an error on October 21, 2026. Della sells newer Vario and Optima models.
Does the DELLA Vario need 230 volts?
One version does and one does not. Check the voltage on the page you buy from.
Is a DELLA mini-split pre-charged?
The Vario listing says pre-charged. You still need a licensed pro for the lines.
How much does a DELLA 12,000 BTU mini-split cost?
From $779.96 to $949.96 for the three picks here.
Final Word
The old Della is gone. The Vario 230V is the efficiency pick, the Vario 115V is the easy-outlet pick and the Optima is the comfort pick.
What comes next: more 230V high-efficiency units, more Wi-Fi and a slow fade of the old SEER numbers. Ask for the SEER2 figure in writing, and check the install price twice.
Related Guides
Keep going with best mini-split air conditioners, single-zone mini-splits, SEER2 energy savings guide, mini-split blinking green light and BTU calculator.
