The Della Vario Series 12000 BTU Mini Split Air Conditioner cools spaces up to 550 sq. ft. reliably. Users have praised how it works with smart home systems like Google Home and Alexa, and how easily it schedules for automated operation. A YouTube reviewer called it good value next to alternatives like Mr. Cool, which cost considerably more. On the downside, some users report the remote acting up intermittently, with the power button not always registering. Small to medium rooms where smart integration and energy efficiency matter are where it belongs, though anyone who wants a more dependable remote should consider alternatives.
Full review
12,000 BTUs rated to 550 square feet
The Vario is a single-zone ductless system rated at 12,000 BTU and quoted for spaces up to 550 sq. ft., which covers a large bedroom, a converted garage or a bonus room. The indoor head is 31.92 inches wide and 8.07 inches deep and weighs 19.8 lb, so it mounts on ordinary framing without reinforcement.
Runs on a 115-volt circuit
It is a 115V unit, and that is the practical difference between this and most mini-splits: there is no 230-volt circuit to run, so an existing outlet or one new 115-volt branch is enough. That single fact is why it turns up so often on lists aimed at owner-installers rather than contractors.
Quoted at 32 dBA with an efficiency rating of 20
Della lists 32 dBA for the indoor head and an efficiency rating of 20, both ordinary-to-good for a residential single-zone system. Owners consistently describe it as quiet in practice, which is what the architecture predicts: the head is the only part indoors and the compressor noise stays outside the building.
Google Home and Alexa scheduling hold up
Smart-home integration is the feature owners single out. The unit pairs with Google Home and Alexa, and scheduling sticks, so a room can be pre-cooled before anyone gets home. On a system at this price that is not a given, and it is the main thing separating the Vario from cheaper single-zone units.
The remote does not always register the power button
The recurring complaint is the remote. Owners report intermittent failures where the power button does nothing and the press has to be repeated. It is not a fault that stops the unit working, but it is a daily irritation, and the smart-home control is the workaround most people fall back on.
Rated down to -4°F, and installation is extra
Della rates operation down to -4°F, which is fine for mild winters and not enough for a genuinely cold climate; treat the heating side as a shoulder-season bonus rather than a primary heat source. The listed price also excludes installation, and line set, vacuum pump and electrical work add materially to the real total.
Strengths
- +Works well with smart home systems like Google Home and Alexa
- +Effective for cooling spaces up to 550 sq. ft.
- +Compatible with scheduling features for automated operation
- +Provides good value compared to higher-priced alternatives like Mr. Cool
Watch-outs
- −Remote control intermittently fails to respond to power button presses
- −Some users have reported issues with the remote functionality
How it compares
The Della Vario Series offers smart home integration with Google Home and Alexa, a feature missing from the more basic Senville LETO Series. However, unlike the reliable Senville AURA Series with its premium compressor and Energy Star certification, the Della Vario has reported remote control issues and lacks the same level of build quality.
Rating sources
Our 4.0 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
