Best Della Dual Zone Mini Splits: 15 Spec-Based Picks
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Finding the best della dual zone mini splits requires careful attention to capacity and efficiency. Our top pick, the DELLA 18K BTU Dual Zone Mini Split, leads because its 230V operation and 22 SEER2 rating suit smaller spaces needing smart control. We compared 15 models using only the specifications published on the listings. This approach removes guesswork from your selection process. Use this guide to decide which unit matches your room sizes, voltage requirements, and desired features.
Quick picks
The best fit for you
- You need smart control for smaller dual zone spaces DELLA 18K BTU Dual Zone Mini Split This 18K BTU model offers 230V operation and app control for reliable dual-zone cooling.
- You want the highest efficiency rating for small rooms Della 18K BTU Dual Zone Mini Split It features a 25 SEER2 rating, prioritizing energy savings and quiet operation over raw power.
- You need balanced cooling with 230V power for medium rooms Della 18K 24 SEER2 Dual Zone 208-230V This 18K BTU unit delivers 24 SEER2 efficiency and smart features for balanced dual-zone performance.
- You require hidden ceiling installations with smart home integration Della 34K BTU Dual Zone Concealed Ducted The 34K BTU concealed ducted model suits buyers prioritizing hidden aesthetics and smart control.
- You need high capacity for large spaces with separate climate control DELLA 42K BTU Dual Zone Mini Split This 42K BTU dual zone system provides raw cooling power and app management for large areas.
Our 15 picks
DELLA 18K BTU Dual Zone Mini Split
Best for: smaller dual zone spaces needing smart control
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 18000 BTU/h
- Efficiency Rating
- 22 SEER2
- Voltage
- 230V
- Coverage Area
- up to 850 Sq.Ft
- Heat Pump
- Heat Pump
View on Amazon: DELLA 18K BTU Dual Zone Mini Split Affiliate link
This Della dual zone mini split provides 18,000 BTU of cooling across two zones, split as 7,000 and 12,000 BTU. It operates on 230V power with a 22 SEER2 efficiency rating. The system includes Wi-Fi connectivity for app and voice control. It is suitable for spaces up to 850 square feet and features inverter technology for energy savings.
Pros
- 22 SEER2 efficiency rating
- Wi-Fi and voice control support
- 230V electrical connection
- Covers up to 850 sq ft
Cons
- Lower SEER2 rating than some competitors offering 25+ SEER2
- Smaller total capacity than 28K or 42K models
- Self-cleaning function does not operate despite display option
Good fit if
- You need a dual zone system for smaller rooms
- You have 230V electrical availability
- You want smart home integration
Skip if
- You require higher efficiency ratings above 22 SEER2
- You need cooling capacity exceeding 18,000 BTU
- You are looking for a self-cleaning feature that actually works
Verdict: Della 18K BTU Dual Zone 7+12 offers reliable dual-zone cooling for smaller spaces with smart features. It fits buyers who prioritize 230V operation and app control over maximum efficiency or higher BTU output.
Della 18K BTU Dual Zone Mini Split
Best for: Small dual-zone spaces needing high efficiency
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 18,000 BTU/h
- Efficiency Rating
- 25 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 800 Sq.Ft
- Heat Pump
- Heat pump
View on Amazon: Della 18K BTU Dual Zone Mini Split Affiliate link
This Della dual zone mini split pairs two 9,000 BTU indoor units with a single outdoor condenser. It delivers 18,000 total BTU with a 25 SEER2 efficiency rating. The system covers up to 800 square feet and includes Wi-Fi connectivity for app control. It operates quietly at 28dB and provides heating down to -13℉. This model suits smaller spaces where independent zone control is needed.
Pros
- 25 SEER2 efficiency rating for reduced power consumption
- Independent control for two 9,000 BTU zones
- Wi-Fi connectivity with smartphone app support
- Quiet operation at 28dB noise level
Cons
- Lower per-zone capacity (9K BTU) limits coverage to 800 sq ft
- Self-cleaning function is listed but does not operate
- Heating performance drops in extreme cold below -13℉
Good fit if
- You need to cool two small rooms under 400 sq ft each
- You want high energy efficiency with a 25 SEER2 rating
- You prefer app control for each zone independently
Skip if
- You require cooling for larger rooms exceeding 400 sq ft per zone
- You need a self-cleaning function that actually works
- You want higher per-zone capacity than 9,000 BTU
Verdict: Della 18K BTU Dual Zone (2x9K) offers high efficiency and quiet operation for small dual-room setups. It fits buyers who prioritize energy savings and app control over raw cooling power per zone.
Della 28K BTU Dual Zone Mini Split
Best for: Dual-zone cooling with included line sets
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 28,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 1,550 sq ft
- Heat Pump
- Heat Pump
View on Amazon: Della 28K BTU Dual Zone Mini Split Affiliate link
This Della dual-zone mini split delivers 28,000 BTU of cooling across two rooms, split as 12,000 and 18,000 BTU. It operates at 20 SEER2 on 208-230V power. The system covers up to 1,550 square feet and includes 16ft installation kits. You get individual temperature control for each zone. It runs quietly at 32 dBa and uses R454B refrigerant. This unit suits you if you need moderate cooling capacity for two distinct spaces.
Pros
- 20 SEER2 energy efficiency rating
- 28,000 total BTU cooling capacity
- Quiet operation at 32 dBa
- Includes 16ft installation kits
- Uses R454B refrigerant
Cons
- Lower 20 SEER2 efficiency compared to 24-26 SEER2 models on this list
- Does not support the self-cleaning function
- Requires professional installation and line-set vacuuming
Good fit if
- You need separate temperature control for two rooms
- You have a 208-230V electrical circuit available
- You want a system with included 16ft line sets
Skip if
- You require the highest efficiency ratings available in this guide
- You prefer a self-cleaning feature for maintenance
- You need a 115V plug-in unit instead of hardwired
Verdict: Della 28K BTU Dual Zone Mini Split offers solid dual-zone cooling with included kits, but its 20 SEER2 rating is lower than many competitors. It fits you best if you prioritize included hardware and 208-230V compatibility over peak efficiency.
Della 20K BTU Dual Zone Mini Split
Best for: Two rooms with different cooling needs
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 20000 BTU/h
- Efficiency Rating
- 19 SEER2
- Voltage
- 208-230V
- Coverage Area
- up to 1400 Sq. Ft
- Heat Pump
- heat pump
View on Amazon: Della 20K BTU Dual Zone Mini Split Affiliate link
This Della dual zone mini split delivers 20,000 BTU of cooling across two indoor units (9,000 and 18,000 BTU). It operates at 19 SEER2 efficiency on 208-230V power. The system covers up to 1,400 square feet and includes 16-foot installation kits. It features a heat pump that functions down to -13°F. You get R454B refrigerant and smart airflow controls. This model suits you if you need reliable cooling for two distinct rooms with standard voltage requirements.
Pros
- 19 SEER2 efficiency rating for energy savings
- Dual zone configuration with 9K and 18K indoor units
- Heat pump operation down to -13°F
- Includes 16ft copper pipes and installation kits
- Uses environmentally friendly R454B refrigerant
Cons
- 19 SEER2 is the lowest efficiency on this list
- Self-cleaning function is listed but does not perform
- Maximum fuse size is 25A, requiring specific electrical setup
Good fit if
- You need a dual zone system for two rooms of different sizes
- You have a 208-230V electrical circuit available
- You want a heat pump that works in cold weather
Skip if
- You require the highest SEER2 rating available in this guide
- You need a self-cleaning feature that actually functions
- You are looking for a single-zone unit
Verdict: DELLA 20K BTU Dual Zone Mini Split offers basic dual-zone cooling with 19 SEER2 efficiency. It fits you if you need separate control for a small and a large room and have 208-230V power. It lacks the top-tier efficiency of other picks on this list.
DELLA 27,000 BTU 2-Zone Ceiling Cassette
Best for: Ceiling-mounted comfort in large commercial or residential spaces
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 27,000 BTU
- Efficiency Rating
- 24 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 2000 sq ft
- Heat Pump
- Heat Pump
View on Amazon: DELLA 27,000 BTU 2-Zone Ceiling Cassette Affiliate link
This ceiling cassette unit delivers 27,000 BTU across two 18,000 BTU zones with 24 SEER2 efficiency. It covers up to 2,000 square feet and operates on 208-230 V. The 360-degree airflow distributes air evenly, while the 37 dB(A) noise level keeps operations quiet. You get separate controllers for each room, allowing independent temperature settings. This system requires professional installation and is not designed for DIY setup.
Pros
- 24 SEER2 efficiency rating for strong cooling and heating performance
- 360-degree surround airflow for even air distribution
- Quiet operation at 37 dB(A)
- Independent temperature control with separate room controllers
- Operates in temperatures as low as -13°F
Cons
- Mandates professional installation; not a DIY unit
- Requires 208-230 V power, not standard 115 V
- Indoor unit capacity exceeds outdoor unit output, slowing performance when all zones run at full power
Good fit if
- You need a ceiling-mounted unit with discreet, even airflow
- You have a 208-230 V electrical supply available
- You want independent temperature control for two large zones
Skip if
- You are looking for a DIY-friendly installation option
- You only have standard 115 V electrical circuits
- You need simultaneous full-power cooling in both zones
Verdict: DELLA 27K BTU Ceiling Cassette Dual Zone fits commercial spaces or large homes needing discreet, even cooling. It suits users with 208-230 V power who value quiet, independent zone control.
Della 18K 24 SEER2 Dual Zone 208-230V
Best for: balanced dual-zone cooling with 230V power
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 18000 BTU/h
- Efficiency Rating
- 24 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 1100 Sq.Ft
- Heat Pump
- Heat Pump
View on Amazon: Della 18K 24 SEER2 Dual Zone 208-230V Affiliate link
This dual-zone mini split pairs a 18,000 BTU outdoor unit with two 12,000 BTU indoor handlers. It runs on 208-230V power and achieves a 24 SEER2 efficiency rating. The system covers up to 1,100 square feet and includes Wi-Fi connectivity for Alexa control. It suits you if you need balanced cooling for two medium-sized rooms and have the correct voltage wiring available.
Pros
- 24 SEER2 efficiency rating
- 208-230V voltage compatibility
- Wi-Fi and Alexa smart control
- Two 12,000 BTU indoor units
Cons
- Self-cleaning function does not operate
- Lower 18,000 BTU total capacity
- Requires professional installation
Good fit if
- You need equal cooling for two rooms
- You have 208-230V electrical wiring
- You want Alexa smart control
Skip if
- You require self-cleaning functionality
- You need higher than 18,000 BTU output
- You only have 110V power outlets
Verdict: Della 18K 24 SEER2 Dual Zone 208-230V is a practical choice for homeowners with 208-230V wiring who need balanced cooling for two medium-sized rooms. It delivers solid efficiency and smart features, though the non-functional self-cleaning button is a notable omission.
DELLA 18K 2-Zone Ceiling Cassette 24 SEER2
Best for: commercial spaces with 208-230 V power
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 18,000 BTU/h
- Efficiency Rating
- 24 SEER2
- Voltage
- 208-230 V
- Coverage Area
- up to 1100 sq. ft.
- Heat Pump
- Heat Pump
View on Amazon: DELLA 18K 2-Zone Ceiling Cassette 24 SEER2 Affiliate link
This dual-zone ceiling cassette unit delivers 18,000 BTU of cooling across two 12,000 BTU indoor heads. It achieves a 24 SEER2 efficiency rating and operates on 208-230 V power. The system covers up to 1,100 square feet with 360-degree airflow. It includes a 25-foot line set and runs at 32 dB. You should choose this if you need a commercial-style, low-profile cooling solution for offices or shops.
Pros
- 24 SEER2 efficiency rating for strong performance
- 360-degree surround airflow for even distribution
- 25-foot included copper line sets
- Quiet 32 dB(A) operation
Cons
- Requires 208-230 V power, not standard 115 V
- Mandates professional installation, not DIY
- Indoor units total 24,000 BTU, exceeding the 18,000 BTU outdoor capacity
Good fit if
- You need a ceiling-mounted unit for commercial spaces
- You have 208-230 V electrical service available
- You want 360-degree airflow coverage
Skip if
- You require a standard 115 V household outlet
- You plan to install the unit yourself
- You need simultaneous full cooling for all zones
Verdict: DELLA 18K 2x12K Ceiling Cassette 24 SEER2 is a specialized commercial solution for users with 208-230 V power who need low-profile, even airflow. It suits offices and shops where professional installation is standard and simultaneous full-load operation is not required.
DELLA 28K BTU Dual Zone Mini Split
Best for: Dual-zone cooling with app control
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 28,000 BTU/h
- Efficiency Rating
- 22 SEER2
- Coverage Area
- up to 1400 Sq.Ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- WiFi, Smartphone App
View on Amazon: DELLA 28K BTU Dual Zone Mini Split Affiliate link
This Della dual zone mini split delivers 28,000 BTU of cooling across two indoor units (9,000 and 18,000 BTU). It features 22 SEER2 efficiency and WiFi app control. The system covers up to 1,400 square feet and includes heating down to -13°F. You get two 16ft installation kits and remote controllers for each zone. It is a practical option for homes needing targeted climate control in separate rooms.
Pros
- 22 SEER2 energy efficiency rating
- WiFi connectivity with smartphone app
- Heating operation down to -13°F
- Includes two 16ft installation kits
Cons
- Self-cleaning function does not operate despite display option
- Lower 22 SEER2 rating compared to 25+ SEER2 competitors
- No smart home voice assistant integration listed
Good fit if
- You need independent temperature control for two rooms
- You want WiFi app management for your HVAC
- You require heating performance in cold climates
Skip if
- You need higher energy efficiency than 22 SEER2
- You prefer a single zone configuration
- You require a ceiling cassette or ducted design
Verdict: Della 28K BTU Dual Zone Mini Split provides solid dual-zone cooling with app control and reliable heating. It fits buyers who need separate climate zones and do not require the highest efficiency ratings available.
Della 34K BTU Dual Zone Concealed Ducted
Best for: hidden ceiling installations with smart control
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 34,000 BTU
- Efficiency Rating
- 20 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 1150 Sq. Ft
- Heat Pump
- Heat Pump
View on Amazon: Della 34K BTU Dual Zone Concealed Ducted Affiliate link
This concealed ducted mini split offers 34,000 BTU across two zones with a 9,000 BTU and 24,000 BTU air handler. It runs on 208-230V and achieves 20 SEER2 efficiency. The system includes a built-in condensate pump and supports up to 1150 sq ft. It is designed for homes where you want hidden indoor units and smart control via the app or Alexa.
Pros
- Concealed ducted design hides units in ceilings or attics
- Built-in condensate pump for reliable drainage
- Smart control via DELLA App and Alexa
- High airflow of 335 CFM with 7-speed fan
Cons
- Lower 20 SEER2 rating compared to other models on the list
- Requires professional installation as it is not a DIY system
- 208-230V voltage may need specific electrical setup
Good fit if
- You want a clean look with hidden indoor units
- You need a condensate pump for drainage flexibility
- You have a 208-230V electrical circuit available
Skip if
- You prefer a standard 115V plug-in system
- You want the highest SEER2 efficiency available
- You are looking for a DIY-friendly installation
Verdict: Della 34K BTU Dual Zone Concealed Ducted suits buyers who prioritize hidden aesthetics and smart home integration over peak efficiency ratings.
DELLA 18K BTU 2 Zone 24 SEER2
Best for: Two small rooms needing independent climate control
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 18000 BTU/h
- Efficiency Rating
- 24 SEER2
- Voltage
- 208-230V
- Coverage Area
- up to 800 Sq.Ft
- Heat Pump
- Heat Pump
View on Amazon: DELLA 18K BTU 2 Zone 24 SEER2 Affiliate link
This dual-zone system splits 18,000 BTU into two 9,000 BTU indoor units. It operates at 24 SEER2 efficiency and connects via Wi-Fi app. You get independent climate control for two rooms covering up to 800 square feet. The soft airflow design reduces direct drafts. It includes 16-foot installation kits and runs on 208-230V power.
Pros
- 24 SEER2 energy efficiency rating
- Wi-Fi app connectivity with smart geolocation
- Soft airflow design prevents direct drafts
- Dual 9,000 BTU units for separate room control
- Ultra-quiet operation at 30 dBA
Cons
- Lower per-zone cooling capacity (9K) compared to 12K or 18K options
- Self-cleaning function is listed but does not perform
- Requires professional installation and line set vacuuming
Good fit if
- You need to cool two small rooms of about 400 square feet each
- You want independent temperature control for each zone
- You prefer soft, indirect airflow to avoid direct drafts
Skip if
- You need high cooling power for larger rooms exceeding 400 square feet
- You require a self-cleaning function that actually operates
- You prefer a DIY installation without professional service
Verdict: DELLA 18K Dual Zone 9K+9K suits buyers who need two separate, low-capacity zones with high efficiency. It is ideal for small rooms where soft airflow and app control matter more than raw cooling power.
DELLA 27K BTU 2-Zone 24 SEER2
Best for: 208-230V dual-zone cooling needs
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 27000 BTU/h
- Efficiency Rating
- 24 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 1550 Sq.Ft
- Heat Pump
- Heat Pump
View on Amazon: DELLA 27K BTU 2-Zone 24 SEER2 Affiliate link
This dual-zone mini split delivers 27,000 BTU of cooling across two indoor units (12K and 18K BTU). It operates on 208-230V power and achieves a 24 SEER2 efficiency rating. The system covers up to 1,550 square feet and includes WiFi connectivity for app and Alexa control. It is designed for spaces requiring robust cooling capacity with flexible voltage options.
Pros
- 24 SEER2 efficiency rating for reduced energy consumption
- 208-230V voltage compatibility for flexible installation
- WiFi and Alexa smart home integration
- Covers up to 1,550 square feet of space
- R454B refrigerant with heat pump functionality
Cons
- 27,000 BTU total capacity is lower than the 34K and 42K options on this list
- Self-cleaning function is listed but does not perform any operation
- Indoor unit noise level is 50 dBa, which is higher than some quieter competitors
Good fit if
- You need a dual-zone system that supports 208-230V electrical setups
- You require a total cooling capacity of 27,000 BTU for medium-sized spaces
- You want smart control via Alexa and a mobile app
Skip if
- You need a higher total capacity of 34,000 or 42,000 BTU
- Your electrical system only supports standard 115V outlets
- You require a self-cleaning function that actually operates
Verdict: DELLA 27K BTU Dual Zone 24 SEER2 is a solid choice for users needing 208-230V compatibility and moderate dual-zone cooling. It fits homes where 27,000 BTU is sufficient and smart features are a priority.
Della 27K BTU Dual Zone Soft Airflow
Best for: Cold climates needing soft airflow
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 27,000 BTU/h
- Efficiency Rating
- 26.5 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 950 Sq.Ft
- Heat Pump
- Heat pump
View on Amazon: Della 27K BTU Dual Zone Soft Airflow Affiliate link
This dual zone mini split offers 27,000 BTU total cooling across two indoor units (9,000 and 12,000 BTU). It achieves a 26.5 SEER2 efficiency rating and operates on 208-230V power. The system includes soft airflow technology for gentle circulation and quiet 26dB operation in mute mode. You get smart control via the Della+ app and Alexa, along with heating capability down to -22°F. It covers up to 950 square feet.
Pros
- 26.5 SEER2 efficiency rating for energy savings
- Soft airflow design reduces harsh direct drafts
- Quiet 26dB operation in mute mode
- Heating function works down to -22°F
- Includes 26.5 SEER2 efficiency rating
Cons
- Self-cleaning function is listed but does not operate
- Requires 208-230V electrical connection
- Indoor unit dimensions are 32.3 inches wide
Good fit if
- You need gentle airflow for bedrooms or nurseries
- You require heating in cold climates down to -22°F
- You have 208-230V electrical supply available
Skip if
- You only have standard 115V outlets
- You want a self-cleaning function that actually works
- You prefer a single zone configuration
Verdict: Della 27K BTU Dual Zone Soft Airflow is a high-efficiency dual zone system suited for homes needing gentle air circulation and cold-weather heating. It fits best where 208-230V power is available and soft airflow is a priority.
Della 27K BTU Dual Zone Ducted
Best for: hidden ceiling installations with 208-230V power
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 27,000 BTU
- Efficiency Rating
- 22 SEER2
- Voltage
- 208-230V
- Coverage Area
- up to 1200 Sq. Ft
- Heat Pump
- Heat Pump
View on Amazon: Della 27K BTU Dual Zone Ducted Affiliate link
This concealed ducted mini split pairs a 27,000 BTU outdoor unit with two 18,000 BTU indoor handlers. It offers 22 SEER2 efficiency and operates on 208-230V power. The system includes a built-in condensate pump and supports complex ductwork. It suits you if you want a clean, hidden installation in ceilings or attics for up to 1200 square feet of total coverage.
Pros
- Two 18,000 BTU indoor units for balanced dual-zone cooling
- 22 SEER2 efficiency rating for energy savings
- Built-in condensate pump for flexible drainage
- Supports complex ductwork with 0.4 in. WC static pressure
- Smart control via DELLA App and Alexa
Cons
- Requires 208-230V electrical connection, not standard 115V
- Concealed ducted design demands professional installation
- Indoor unit dimensions are bulky for tight ceiling spaces
Good fit if
- You need a hidden unit in ceilings or attics
- You have 208-230V power available for installation
- You want to run complex ductwork layouts
Skip if
- You require a standard 115V plug-in connection
- You prefer a visible wall-mounted indoor unit
- You are attempting a DIY installation without ductwork
Verdict: Della 27K BTU Dual Zone Ducted fits homeowners seeking a clean, hidden aesthetic with professional-grade ducted airflow. It is the right pick if you have 208-230V power and need to hide units in ceilings or attics.
DELLA 35K BTU Ceiling Cassette
Best for: commercial spaces needing high capacity
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 35,000 BTU/h
- Efficiency Rating
- 22.5 SEER2
- Voltage
- 208-230 V
- Coverage Area
- up to 1550 sq. ft.
- Heat Pump
- Heat Pump
View on Amazon: DELLA 35K BTU Ceiling Cassette Affiliate link
This dual-zone ceiling cassette delivers 35,000 BTU of cooling across two rooms. It covers up to 1,550 sq. ft. with a 22.5 SEER2 rating. The 208-230 V voltage suits commercial spaces. You get 360-degree airflow and smart app control. It operates quietly at 37 dB. This unit requires professional installation and includes 25 ft line sets.
Pros
- 35,000 BTU total cooling capacity
- 22.5 SEER2 efficiency rating
- 208-230 V voltage for commercial use
- 360-degree surround airflow
- DELLA App and Alexa compatibility
Cons
- Requires professional installation only
- 208-230 V voltage not standard for homes
- Ceiling cassette design limits placement options
Good fit if
- You need high capacity for large spaces
- You have a commercial 208-230 V supply
- You want discreet ceiling-mounted units
Skip if
- You need a standard 115 V residential unit
- You prefer wall-mounted indoor units
- You want a DIY installation option
Verdict: DELLA 35K BTU Ceiling Cassette fits commercial spaces needing high capacity and discreet cooling. It is not suitable for standard residential 115 V circuits.
DELLA 42K BTU Dual Zone Mini Split
Best for: Large spaces needing high capacity
- Number of Zones
- Dual Zone (what this guide is about)
- Cooling Capacity
- 42,000 BTU/h
- Efficiency Rating
- 24 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 2500 Sq.Ft
- Heat Pump
- Heat pump
View on Amazon: DELLA 42K BTU Dual Zone Mini Split Affiliate link
This dual zone system pairs an 18,000 BTU unit with a 24,000 BTU unit for a total of 42,000 BTU. It reaches 24 SEER2 efficiency and includes WiFi app control. You can use it to cool up to 2,500 square feet across two separate rooms. The heat pump operates down to -13°F. It runs quietly at 32dB and uses R-32 refrigerant. This setup suits larger spaces needing independent temperature management.
Pros
- High 42,000 BTU total cooling capacity
- 24 SEER2 energy efficiency rating
- WiFi connectivity with smartphone app
- Independent 18K and 24K zone control
Cons
- Self-cleaning function does not operate despite display option
- Requires professional installation for vacuuming and refrigerant balance
- Maximum fuse size is 45A, requiring robust electrical setup
Good fit if
- You need to condition a large area up to 2,500 square feet
- You want independent temperature control for two distinct rooms
- You require heating performance in cold climates down to -13°F
Skip if
- You only need to cool a single small room
- You prefer a system with a verified self-cleaning cycle
- You cannot accommodate a 45A maximum fuse size
Verdict: DELLA 42K BTU Dual Zone Mini Split is a high-capacity solution for large homes needing separate climate control. It fits buyers who prioritize raw cooling power and app management over automated maintenance features.
Specifications side by side
| Spec | DELLA 18K BTU Dual Zone Mini Split | Della 18K BTU Dual Zone Mini Split | Della 28K BTU Dual Zone Mini Split | Della 20K BTU Dual Zone Mini Split | DELLA 27,000 BTU 2-Zone Ceiling Cassette | Della 18K 24 SEER2 Dual Zone 208-230V | DELLA 18K 2-Zone Ceiling Cassette 24 SEER2 | DELLA 28K BTU Dual Zone Mini Split | Della 34K BTU Dual Zone Concealed Ducted | DELLA 18K BTU 2 Zone 24 SEER2 | DELLA 27K BTU 2-Zone 24 SEER2 | Della 27K BTU Dual Zone Soft Airflow | Della 27K BTU Dual Zone Ducted | DELLA 35K BTU Ceiling Cassette | DELLA 42K BTU Dual Zone Mini Split |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cooling Capacity | 18000 BTU/h | 18,000 BTU/h | 28,000 BTU | 20000 BTU/h | 27,000 BTU | 18000 BTU/h | 18,000 BTU/h | 28,000 BTU/h | 34,000 BTU | 18000 BTU/h | 27000 BTU/h | 27,000 BTU/h | 27,000 BTU | 35,000 BTU/h | 42,000 BTU/h |
| Efficiency Rating | 22 SEER2 | 25 SEER2 | 20 SEER2 | 19 SEER2 | 24 SEER2 | 24 SEER2 | 24 SEER2 | 22 SEER2 | 20 SEER2 | 24 SEER2 | 24 SEER2 | 26.5 SEER2 | 22 SEER2 | 22.5 SEER2 | 24 SEER2 |
| Voltage | 230V | 208-230V | 208-230V | 208-230V | 208-230V | 208-230V | 208-230 V | not stated | 208-230V | 208-230V | 208-230V | 208-230V | 208-230V | 208-230 V | 208-230V |
| Coverage Area | up to 850 Sq.Ft | Up to 800 Sq.Ft | Up to 1,550 sq ft | up to 1400 Sq. Ft | Up to 2000 sq ft | Up to 1100 Sq.Ft | up to 1100 sq. ft. | up to 1400 Sq.Ft | Up to 1150 Sq. Ft | up to 800 Sq.Ft | Up to 1550 Sq.Ft | Up to 950 Sq.Ft | up to 1200 Sq. Ft | up to 1550 sq. ft. | Up to 2500 Sq.Ft |
| Number of Zones | 2 Zone | Dual Zone | 2 Zone | 2 Zone | 2 Zone | 2 Zone | 2 Zone | Dual Zone | 2 Zone | 2 Zone | 2 Zone | 2 Zone | 2 Zone | 2 Zone | Dual Zone |
| Heat Pump | Heat Pump | Heat pump | Heat Pump | heat pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat Pump | Heat pump | Heat Pump | Heat Pump | Heat pump |
| Smart Connectivity | WiFi, Alexa, Google Home | WiFi, App, Alexa | Wi-Fi, Alexa | Alexa, WiFi | not stated | Wifi, Alexa | not stated | WiFi, Smartphone App | WiFi, Alexa, DELLA App | WiFi, Alexa, app | WiFi, Alexa, App | Alexa, Della+ WiFi app | WiFi, Alexa, DELLA App | DELLA App, voice assistants | WiFi, App, Alexa |
| Mounting Type | not stated | not stated | Wall Mount | Wall Mount | not stated | not stated | not stated | not stated | not stated | not stated | not stated | not stated | not stated | not stated | not stated |
| Smart Control | Wi-Fi | Wi-Fi, Alexa | Wi-Fi, Alexa | Wi-Fi, Alexa | not stated | Wi-Fi, Alexa | not stated | not stated | Wi-Fi, Alexa | Wi-Fi, Alexa | Wi-Fi, Alexa | not stated | Wi-Fi, Alexa | not stated | Wi-Fi, Alexa |
| Dimensions | 7.87 × 30.2 × 11.8 inches | 7.48 × 31.9 × 12.1 inches | 8.07 × 31.9 × 11.5 inches | 8 × 31.9 × 11.5 inches | 22.5 × 22.5 × 9.63 inches | 7.69 × 36.3 × 12.1 inches | 22.5 × 22.5 × 9.63 inches | 7.48 × 31.9 × 12.1 inches | 19.3 × 27.5 × 7.87 inches | 7.68 × 32.3 × 12.1 inches | 7.69 × 36.3 × 12.1 inches | 7.68 × 32.3 × 12.1 inches | 19.3 × 35.4 × 7.87 inches | 22.5 × 22.5 × 9.63 inches | 7.68 × 35.8 × 12 inches |
| Weight | 16.5 pounds | 18.7 pounds | not stated | 19.8 pounds | 32 pounds | 23.1 pounds | 32 pounds | 18.7 pounds | 33.1 pounds | 20.7 pounds | 23.1 pounds | 20.7 pounds | 39.7 pounds | 32 pounds | 21.4 pounds |
| Size | 2 Zone - 18000 BTU 7+12 | 2 Zone 18000 BTU 9+9 | 2 Zone 28000 BTU 12+18 | 2 Zone 20000 BTU 9+18 | 2 Zone 27000 BTU 18+18 | 2 Zone - 18000 BTU 12+12 | 2 Zone 18000 BTU 12+12 | 2 Zone 28000 BTU 9+18 | 2 Zone - 34000 BTU 9+24 | 2 Zone 18000 BTU 9+9 | 2 Zone - 27000 BTU 12+18 | 2 Zone 27000 BTU 9+12 | 2 Zone - 27000 BTU 18+18 | 2 Zone 35000 BTU 12+18 | 2 Zone 42000 BTU 18+24 |
| Color | White with Line set | White with Line set | White with Line set | White with Line set | White with Line set | White | White with Line set | White with Line set | White with Line set | White with Line Set | White | White with Line set | White with Line set | White with Line set | White with Line set |
| Model | 18KM+D712 | 1D2-TC+D99 | 1D3-TL+D1218 | 1D2-TL+D918 | 1D3-CC+D1818 | 1D2-TP+D1212 | 1D2-CC+D1212 | 1D3-TC+D918 | 1D4-DC+D924 | 1D2-TPX+D99 | 1D3-TP+D1218 | 1D4-TPHX+D912 | 1D3-DC+D1818 | 1D4-CC+D1218 | 1D5-TC+D1824 |
If you need independent temperature management for food storage, compare the published specs for best refrigerators with dual zone.
How to choose the right one
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Check your power supply
Most Della dual zone mini splits require 208-230V power. You must verify your home has the correct voltage before purchasing. The DELLA 18K BTU Dual Zone Mini Split (Position 1) and the Della 18K 24 SEER2 Dual Zone (Position 6) both operate on 230V. If you only have standard 115V circuits, these high-capacity units will not work. Always match the voltage spec to your electrical panel to avoid installation failures or the need for expensive upgrades.
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Match capacity to room size
Dual zone systems split their total BTU output between two indoor units. You should check the specific BTU rating for each zone. The Della 18K BTU Dual Zone Mini Split (Position 1) provides 7K BTU to one zone and 12K BTU to the other. This 7+12 split suits smaller spaces where one room is significantly smaller than the other. Do not assume the total BTU applies equally to both rooms. Select a model where the individual zone capacities match your specific room sizes.
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Prioritize SEER2 efficiency
SEER2 measures cooling efficiency under modern testing standards. Higher numbers mean lower energy bills. The Della 18K BTU Dual Zone (Position 2) offers a 25 SEER2 rating, making it the most efficient option for small dual-zone spaces. If you prioritize energy savings, look for models with ratings above 22 SEER2. The DELLA 18K BTU Dual Zone Mini Split (Position 1) provides 22 SEER2, which is reliable but less efficient than the top budget pick. Compare these numbers to estimate long-term operating costs.
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Select the right mounting type
Your installation location dictates the unit style. Wall-mounted units are standard for homes, while ceiling cassettes offer discreet, even airflow for commercial or high-ceiling spaces. The DELLA 27,000 BTU 2-Zone Ceiling Cassette (Position 5) is designed for hidden ceiling installations. It suits large commercial spaces or homes needing a clean aesthetic. If you want visible units, stick to standard wall-mounted models. The mounting type affects both the visual impact and the airflow distribution in your room.
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Verify smart control features
Smart control allows you to manage temperatures remotely via an app. This feature is essential for convenience and scheduling. The DELLA 18K BTU Dual Zone Mini Split (Position 1) includes app control, fitting buyers who prioritize remote management. The Della 18K 24 SEER2 Dual Zone (Position 6) supports Wi-Fi and Alexa integration. Ensure the model you choose explicitly lists smart capabilities. Without app control, you must adjust settings using the physical remote, which is less convenient for daily adjustments.
Frequently asked questions
Which Della dual zone mini split has the highest efficiency rating?
The Della 18K BTU Dual Zone Mini Split (Position 2) leads with a 25 SEER2 rating. This model uses a 9K+9K BTU configuration to prioritize energy savings over raw cooling power. It is ideal for small dual-room setups where quiet operation and app control matter more than maximum heat removal.
What is the difference between the 18K and 28K BTU models?
The 18K models split capacity into smaller zones, such as 9K+9K or 12K+12K, while the 28K unit offers 12K+18K or 9K+18K splits. The 28K option provides higher total cooling for larger spaces but typically carries a lower SEER2 rating of 20 compared to the 18K models' higher efficiency scores.
Do all Della dual zone units require 208-230V power?
Most high-capacity models in this list require 208-230V power, including the 28K, 34K, and 42K BTU units. However, some 18K BTU models are designed for standard 115V circuits. You must verify your home’s electrical supply before purchasing, as using the wrong voltage can prevent the unit from operating correctly.
Are there Della dual zone options for ceiling installation?
Yes, Della offers ceiling cassette and concealed ducted models for hidden installations. The 27K BTU Ceiling Cassette (Position 5) and the 34K BTU Concealed Ducted unit (Position 9) are designed for commercial spaces or large homes. These units provide discreet, even cooling and require professional installation due to their mounting style.
Which model is best for small rooms needing independent control?
The DELLA 18K Dual Zone 9K+9K (Position 10) is ideal for two small rooms. It offers high efficiency and soft airflow, prioritizing comfort over raw cooling power. This setup allows you to manage each zone independently via smart features, making it suitable for spaces where gentle air circulation is preferred.
Does the Della 28K BTU Dual Zone include line sets?
Yes, the Della 28K BTU Dual Zone Mini Split (Position 3) comes with included line sets. This bundle simplifies installation by providing necessary hardware upfront. While its 20 SEER2 rating is lower than some competitors, it fits buyers who prioritize included components and 208-230V compatibility over peak energy efficiency.
How many dual zone mini splits are in this guide?
This guide features 15 Della dual zone mini split models. The list covers various capacities from 18K to 42K BTU, including wall-mounted, ceiling cassette, and concealed ducted options. Each model is ranked based on specific specifications like SEER2 ratings, voltage requirements, and zone configuration to help you find the right fit.