Della 36K BTU 5 Zone Review (2026): A Spec-Based Look

What stands out

• 20 SEER2 efficiency rating for reduced energy consumption
• 36,000 BTU total cooling capacity across five zones
• Heat pump operation down to -22°F
• Concealed ducted design with 28dB noise level
• Smart control via DELLA App and Alexa

Who it fits

Key specs explained

Cooling Capacity: 36,000 BTU

This rating indicates the total cooling power the outdoor unit provides. It matches the combined output of the five indoor handlers. You get strong performance for large open areas. If you need to cool multiple rooms at once, this capacity ensures consistent temperatures. Compare this figure with other units to ensure it covers your total square footage needs without struggling during peak heat.

Efficiency Rating: 20 SEER2

SEER2 measures seasonal energy efficiency under updated testing standards. A 20 rating means the system uses less electricity to produce the same cooling output. This lowers your monthly energy bills over time. Higher numbers indicate better efficiency. When comparing models, choose a higher SEER2 value if you plan to run the unit frequently throughout the year for long-term savings.

Number of Zones: 5 Zone

This system controls five separate indoor air handlers from one outdoor compressor. You can adjust temperatures in each room independently. This flexibility suits homes with diverse heating and cooling needs. You save energy by cooling only occupied rooms. When shopping, ensure the number of zones matches your layout. More zones offer greater comfort control but require more complex installation.

Voltage: 208-230V

This voltage range specifies the electrical power required for operation. It is standard for most residential mini split installations. You must ensure your home wiring supports this requirement. Incorrect voltage can damage the unit or void the warranty. Always check your electrical panel before buying. This spec is critical for compatibility with your existing home infrastructure and professional installation requirements.

Design and Build Overview

The Della 36K 5-Zone Concealed Ducted unit is designed for hidden installation. According to the listing, the outdoor compressor measures 27.6 inches wide, 19.3 inches long, and 7.87 inches high. It weighs 33.1 pounds. These dimensions allow it to fit in standard attic or crawlspace footprints. The white finish blends into ceiling cavities, keeping the visual clutter out of your living spaces.

Each of the five indoor air handlers is also concealed. This layout requires professional installation because the system is not a DIY project. The design supports complex ductwork with 0.4 in. WC static pressure. This pressure rating helps push air through longer runs or multi-story setups. You get a clean, seamless look because the indoor units hide in ceilings or attics. The system operates quietly, down to 28dB, which matters for bedrooms or offices.

Controls are handled via the DELLA App and Alexa. This smart connectivity lets you adjust temperatures remotely. The concealed design means you do not see bulky wall-mounted units. Instead, air flows through standard ducts. This build choice suits homes where aesthetics matter as much as cooling power. The compact footprint ensures the hardware stays out of sight while still delivering 36,000 BTU of total capacity across your zones.

Setup And Everyday Use

Setup requires professional installation, as the listing notes this is not a DIY system. The outdoor unit operates on 208-230V power with a maximum fuse rating of 45A. You must use the included 25 ft copper line sets, sized at 1/4 inch and 3/8 inch outer diameter. If your ductwork extends beyond 25 feet, you will need to adjust the refrigerant charge. The concealed indoor handlers fit into ceilings or attics, supported by 0.4 in. WC static pressure for complex layouts. Daily use begins with the Della App or Alexa integration. You can set temperatures between 60℉ and 90℉ using the 7-speed fan. The system uses inverter technology to adjust compressor speed, aiming for stable performance and reduced power draw. You can schedule the unit to start before you arrive home using geolocation features. The heat pump maintains reliable heating down to -22℉. For maintenance, the high-temperature self-cleaning mode and smart defrost help manage moisture and ice. The built-in condensate pump ensures water removal without gravity dependence. The air handlers operate quietly, with noise levels as low as 28dB. You can run all five zones simultaneously, though performance may slow if total demand exceeds the outdoor unit’s 36,000 BTU capacity. The system uses R454B refrigerant for environmental compliance. You control airflow direction and speed directly through the smart interface. This setup supports efficient cooling and heating for up to 1,850 square feet of living space.

Before You Buy This 5-Zone Unit

You should verify your home’s electrical capacity before installing this system. The listing specifies a 208-230V requirement with a 45A maximum fuse rating. Ensure your panel can support this load without upgrading. Since this is a concealed ducted design, you must plan your ceiling or attic space carefully. The indoor handlers hide in these areas, but you still need room for the 25-foot copper line sets. Check your ductwork compatibility, as the unit offers 0.4 inches of static pressure. This supports complex layouts but may struggle in very long runs. You will also need to manage the condensate pump, which is built-in for reliable drainage. Upkeep involves regular filter cleaning on the five indoor units. This model fits well if you need zoned control for large spaces. It suits buyers who want hidden aesthetics and smart app control. Compare it against other multi-zone options if you have varying cooling needs across different floors.

Check before you buy

• Confirm your electrical panel supports 208-230V and 45A fuses.
• Measure ceiling or attic space for the concealed indoor handlers.
• Check ductwork length against the 0.4 inch static pressure limit.
• Ensure you have room for five 25-foot copper line sets.

The product at a glance

1

DELLA 36K 5-Zone Concealed Ducted

Best for: multi-zone concealed ducted installations

Cooling Capacity

36,000 BTU

Efficiency Rating

20 SEER2

Voltage

208-230V

Coverage Area

up to 1850 Sq. Ft

Number of Zones

5 Zone

Heat Pump

Heat Pump

View on Amazon: DELLA 36K 5-Zone Concealed Ducted Affiliate link

This concealed ducted mini split delivers 36,000 BTU across five zones. It features a 20 SEER2 efficiency rating and a 9 HSPF heat pump. The system includes four 9,000 BTU and one 12,000 BTU indoor units. It covers up to 1,850 square feet. The outdoor unit operates on 208-230V power. You get smart control via the Della app and Alexa. It is designed for multi-story homes with complex ductwork needs.

Pros

• 20 SEER2 energy efficiency rating
• Five-zone configuration for flexible coverage
• Concealed ducted design for clean aesthetics
• Heat pump operates down to -22°F
• Built-in condensate pump included

Cons

• Requires professional installation, not DIY
• Refrigerant adjustment needed for lines over 25 ft
• Performance slows if all zones run at full capacity

Good fit if

• You need to cool or heat up to 1,850 sq. ft.
• You want a concealed unit for ceilings or attics
• You prefer smart control via app or Alexa

Skip if

• You are looking for a DIY installation system
• You need all five zones to run at full power simultaneously
• You require a single-zone setup for one room

Verdict: Della 36K 5-Zone Ducted Mini Split is a high-efficiency solution for larger homes needing zoned climate control. It suits you if you value concealed installation and smart app management over simple DIY setup.

Specifications side by side

Frequently asked questions

See also

• della 36k btu 5 zone alternatives
• best della mini splits under 2500
• della 18k btu 2 zone review
• comfort zone 5 review