DELLA's modern mini-split heat pumps are engineered to be powerful and highly efficient heating solutions, providing reliable comfort year-round, even in climates with cold winters.
The key to their performance is advanced inverter technology and low-ambient heating capabilities, which allow them to extract heat from the outside air even when temperatures drop well below freezing. Unlike traditional electric heaters, this process moves heat rather than creating it, resulting in significant energy savings.
How to Choose the Right Series for Your Climate
The heating capability of a mini-split is best understood by its operating temperature range—specifically, the lowest outdoor temperature at which it can effectively produce heat. To help you choose, we've categorized our product lines based on their heating performance.
Essential All-Season Comfort
These systems provide dependable cooling and are great for heating in moderate or milder winter climates.
| Series | Operating Range |
| Umbra & Motto Series | Cools Even at 118°F, Heats Even at 19°F |
| Econo Series （R32） | Cools Even at 122°F, Heats Even at 4°F |
| Econo Series （R410A） | Cools Even at 122°F, Heats Even at 14°F |
| Serena Series (Single Zone) | Cools Even at 125°F, Heats Even at 5°F |
High-Efficiency Heating
A step up in performance, this tier is designed to be a reliable main heat source for areas with colder winters.
| Series | Operating Range |
| Vario Series (Single Zone） | Cools Even at 122°F, Heats Even at -4°F |
| Vario Series (Multi-Zone) R410A | Cools Even at 131°F, Heats Even at -4°F |
Ultra Heat Performance
Engineered for harsh winter conditions, these systems provide robust and reliable heating, even during deep freezes.
| Series | Operating Range |
| Ceiling Cassette(Single & Multi-Zone) | Cools Even at 131°F, Heats Even at -13°F |
| Optima Series (Single & Multi-Zone) | Cools Even at 131°F, Heats Even at -13°F |
| Vario Series (Multi-Zone) R454B | Cools Even at 131°F, Heats Even at -13°F |
| Serena Series (Multi-Zone) | Cools Even at 125°F. Heats Even at -13°F |
Ultra Hyper Heat
This is our premier tier, designed for the most extreme cold. These systems provide uncompromising heating performance, ensuring your home stays warm on the coldest nights of the year.
| Series | Operating Range |
| Optima Series Ultra Hyper Heat | Cools Even at 131°F, Heats Even at an exceptional -22°F |
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