6 Best Alternatives to the Della 18K BTU Dual Zone Mini Split (2026)
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The Della 18K BTU Dual Zone Mini Split offers high efficiency and smart controls for two small rooms. If you are searching for della 18k btu dual zone mini split alternatives, you may need different coverage or mounting options. This model provides 25 SEER2 efficiency and Wi-Fi app management for independent zone control. It is designed for spaces up to 800 square feet with a 9K+9K BTU split.
Some buyers prefer ceiling cassettes, larger capacities, or asymmetric room sizing. Others might prioritize different efficiency ratings or specific brand reliability. We selected these alternatives because their specifications overlap with the original product. Each option shares key traits like dual-zone capability and inverter technology. You can compare these models to find the right fit for your specific layout and climate needs.
How alternatives differ from Della
ROVSUN 18K Dual Zone Ceiling Cassette
The ROVSUN ceiling cassette uses 230V power and mounts to your ceiling rather than your wall. It weighs 200 pounds, which is significantly heavier than the Della unit. This model shares the 25 SEER2 efficiency rating and dual-zone configuration. You get Wi-Fi smart control for remote management. The ceiling mount saves floor space and directs airflow differently. Choose this if you want a concealed installation and can handle the higher weight and voltage requirements. It offers similar efficiency but a completely different physical footprint and installation method compared to the standard wall-mounted Della system.
Albott 2 Zone 9K+12K BTU Mini Split
The Albott 2 Zone 9K+12K BTU Mini Split offers asymmetric cooling capacity. One zone has 9,000 BTU and the other has 12,000 BTU. This differs from the Della 9K+9K split. It also achieves 25 SEER2 efficiency and includes Wi-Fi smart control. The indoor units are slightly wider but shorter in height. Pick this model if your rooms are different sizes. The 12,000 BTU zone handles larger spaces better. The Della unit forces equal capacity for both zones. This Albott option provides more flexibility for uneven room layouts while maintaining high energy efficiency and app-based control.
ROVSUN 28K BTU Dual Zone 20 SEER2
The ROVSUN 28K BTU Dual Zone 20 SEER2 provides 12,000 BTU per zone. This is higher capacity than the Della 9,000 BTU per zone. It uses 230V power and wall mounting. The efficiency is lower at 20 SEER2 compared to Della’s 25 SEER2. It lacks smart Wi-Fi connectivity. Choose this if you need more cooling power per room and do not care about app control. The higher BTU output suits larger individual spaces. You trade energy efficiency and smart features for raw cooling capacity per zone. It is a robust choice for severe weather climates where maximum output matters more than efficiency ratings.
TOSOT Cosmo 24K Dual Zone 21 SEER2
The TOSOT Cosmo 24K Dual Zone 21 SEER2 delivers 12,000 BTU per zone. This matches the ROVSUN asymmetric option but with equal zones. It has 21 SEER2 efficiency, which is lower than the Della 25 SEER2. It lacks smart Wi-Fi features. The unit is heavier and larger. Pick this if you need 12,000 BTU per room and reliable heating down to -22°F. It suits severe weather climates better than the Della. You sacrifice efficiency and smart control for higher per-zone capacity and extreme cold performance. The fixed 12K+12K split is less flexible than the Della’s 9K+9K for small rooms.
Della 18K BTU Dual Zone Mini Split
This Della 18K BTU Dual Zone Mini Split has a 22 SEER2 rating. This is lower efficiency than the original 25 SEER2 model. It also uses a 9K+9K split. It includes smart Wi-Fi control. The indoor units are slightly narrower but similar in weight. Choose this if you find a better price or specific color option. It offers the same dual-zone layout and smart features. However, you get lower energy efficiency. The original model is more efficient for the same cooling output. This version is an alternative if you prioritize other factors over maximum SEER2 ratings.
Albott 20K BTU 2 Zone Mini Split
The Albott 20K BTU 2 Zone Mini Split offers 25 SEER2 efficiency and Wi-Fi smart control. It has an asymmetric split, likely 8K+12K or similar, differing from the Della 9K+9K. It is lighter and has a similar indoor unit size. Pick this if you need high efficiency and app control for rooms of different sizes. The Albott provides more flexibility than the Della’s equal split. You get the same efficiency rating but better zone matching for uneven spaces. It is a strong alternative for homeowners who want smart features and high efficiency without the constraint of equal BTU outputs for both zones.
Quick picks
Our 7 picks
Della 18K BTU Dual Zone Mini Split
Best for: two small rooms needing independent climate control
- Cooling Capacity
- 18,000 BTU/h
- Efficiency Rating
- 25 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 800 Sq.Ft
- Number of Zones
- Dual Zone
- Heat Pump
- Heat pump
View on Amazon: Della 18K BTU Dual Zone Mini Split Affiliate link
The Della 18K BTU Dual Zone Mini Split offers 25 SEER2 efficiency with two 9,000 BTU indoor units. It covers up to 800 square feet and includes 16ft installation kits. WiFi app control allows remote adjustments. It operates quietly at 28dB and provides heating down to -13°F. This system suits homeowners seeking independent zone control and energy savings for smaller spaces.
Pros
- 25 SEER2 efficiency rating for reduced power consumption
- Dual zone design with two 9,000 BTU indoor units
- WiFi connectivity for smartphone app control
- Quiet operation at 28dB
- Includes 16ft copper pipe installation kits
Cons
- Self-cleaning function does not perform actual cleaning
- Each zone limited to 9,000 BTU capacity
- Requires professional installation for proper setup
Good fit if
- You need independent temperature control for two small rooms
- You want high energy efficiency with 25 SEER2
- You prefer remote management via a smartphone app
Skip if
- You require a single zone system for one large room
- You need heating performance below -13°F
- You want to perform the self-cleaning function manually
Verdict: DELLA 18K BTU Dual Zone 25 SEER2 delivers targeted comfort for two separate areas with high efficiency and smart controls. It fits users who value quiet operation and remote management for smaller spaces.
ROVSUN 18K Dual Zone Ceiling Cassette
Best for: Ceiling-mounted spaces needing smart control
- Cooling Capacity
- 18000BTU (9K/9K)
- Efficiency Rating
- 25 SEER2
- Voltage
- 208-230V
- Number of Zones
- Dual Zone
- Heat Pump
- Heat Pump
- Smart Connectivity
- App control, Alexa, Google Assistant
View on Amazon: ROVSUN 18K Dual Zone Ceiling Cassette Affiliate link
This ROVSUN unit is a dual-zone ceiling cassette mini split with 18,000 BTU total capacity (9K/9K). It offers 25 SEER2 efficiency and inverter heat pump performance down to -4°F. You get Wi-Fi app control, voice assistant compatibility, and individual room controllers. The system includes 25 feet of line sets and remote controls for each zone, making it suitable for commercial or residential spaces requiring discreet ceiling mounting.
Pros
- 25 SEER2 efficiency rating for energy savings
- Wi-Fi app and voice control via Alexa or Google Assistant
- Inverter heat pump operates in temperatures down to -4°F
- Includes 25 feet of line sets and two remote controls
- ETL and AHRI certified for reliability
Cons
- Ceiling cassette design requires professional HVAC installation
- Heavy outdoor unit at 200 pounds
- Does not mention a built-in display on indoor units
Good fit if
- You need discreet ceiling-mounted units for a finished space
- You want smart app and voice control for each zone
- You require heat pump performance in cold climates down to -4°F
Skip if
- You prefer wall-mounted indoor units
- You cannot accommodate a 200-pound outdoor condenser
- You need a system with a built-in display on the indoor unit
Verdict: ROVSUN 18K BTU Dual Zone Cassette is a practical choice for those needing ceiling-mounted units with smart control and cold-weather heating. It suits users who can handle professional installation and heavy equipment.
Albott 2 Zone 9K+12K BTU Mini Split
Best for: homes with two differently sized rooms
- Cooling Capacity
- 9,000 + 12,000 BTU
- Efficiency Rating
- 25 SEER2
- Coverage Area
- Up to 950 Sq.Ft
- Number of Zones
- 2 Zone
- Smart Connectivity
- WiFi, App
- Smart Control
- Wi-Fi
View on Amazon: Albott 2 Zone 9K+12K BTU Mini Split Affiliate link
This dual-zone mini split pairs a 9,000 BTU indoor unit with a 12,000 BTU unit for two rooms of different sizes. It delivers heating and cooling with a 25 SEER2 efficiency rating and Energy Star certification. Built-in Wi-Fi lets you control each zone from your smartphone. It suits you if you need independent climate control across unequal spaces.
Pros
- High efficiency 25 SEER2 rating with Energy Star certification
- Independent dual-zone operation with 9,000 BTU and 12,000 BTU indoor units
- Built-in Wi-Fi for mobile app control
- Outdoor unit features automatic defrosting for cold conditions
Cons
- Unequal zone capacities provide uneven coverage if your rooms match in size
- Product specifications do not list an included physical remote control
Good fit if
- You need to heat and cool two unequal spaces with 9,000 BTU and 12,000 BTU demands.
- You want high efficiency backed by a 25 SEER2 rating and Energy Star certification.
- You prefer adjusting room temperatures using a smartphone app.
Skip if
- You need matched 9,000 BTU or 12,000 BTU outputs in both zones.
- You require an included handheld physical remote rather than mobile app control.
Verdict: Albott 9K+12K BTU Dual Zone Mini Split fits homeowners conditioning two differently sized rooms who prioritize a 25 SEER2 rating and mobile app management.
ROVSUN 28K BTU Dual Zone 20 SEER2
Best for: Larger rooms needing 12K BTU per zone
- Cooling Capacity
- 28000BTU (12K/12K)
- Efficiency Rating
- 20 SEER2
- Voltage
- 208-230V
- Number of Zones
- Dual Zone
- Heat Pump
- Heat Pump
- Mounting Type
- Wall Mount
View on Amazon: ROVSUN 28K BTU Dual Zone 20 SEER2 Affiliate link
This ROVSUN system offers 28,000 BTU total cooling across two zones, with 12,000 BTU per indoor unit. It carries a 20 SEER2 efficiency rating and includes a heat pump for heating down to -4°F. The outdoor condenser measures 38.5 inches wide and weighs 152 pounds. It operates between 28 and 45 dBA. You get two remote controllers and 25-foot line sets. This setup suits larger spaces needing balanced dual-zone climate control.
Pros
- 28,000 BTU total cooling capacity split into two 12,000 BTU zones
- 20 SEER2 efficiency rating for energy savings
- Heat pump operates in temperatures as low as -4°F
- Quiet operation ranging from 28 to 45 dBA
- Includes two remote controllers and 25-foot line sets
Cons
- Lower 20 SEER2 rating compared to 22 or 25 SEER2 competitors
- Heavier 152-pound outdoor unit may require stronger mounting
- No mention of Wi-Fi or smart app connectivity
Good fit if
- You need 12,000 BTU per zone for larger rooms
- You want a standard wall-mount setup without cassette complexity
- You require heating performance in colder climates down to -4°F
Skip if
- You prioritize the highest possible SEER2 efficiency ratings
- You need smart app control or Wi-Fi integration
- You have limited wall space for a 38.5-inch wide condenser
Verdict: ROVSUN 28K BTU Dual Zone 20 SEER2 provides solid dual-zone cooling with a robust heat pump. It fits buyers who need substantial capacity per room and do not require smart features.
TOSOT Cosmo 24K Dual Zone 21 SEER2
Best for: two medium rooms in severe weather climates
- Cooling Capacity
- 24,000 BTU
- Efficiency Rating
- 21 SEER2
- Number of Zones
- 2 Zone
- Heat Pump
- Intelligent defrost heating
- Smart Connectivity
- Gree+ app, voice control
- Dimensions
- 37.9 × 15.8 × 26 inches
View on Amazon: TOSOT Cosmo 24K Dual Zone 21 SEER2 Affiliate link
This TOSOT Cosmo dual zone mini split delivers 24,000 BTU of cooling and heating across two 12,000 BTU indoor heads. It runs at 21 SEER2 and 10 HSPF2, handling extreme ambient temperatures from -22°F to 118°F. You also get Wi-Fi management via the Gree+ app. It suits you if you need equal climate control in two medium-sized rooms.
Pros
- Delivers 24,000 BTU total capacity split into two 12,000 BTU zones
- Operates in extreme outdoor temperatures from -22°F to 118°F
- Supports Gree+ app connectivity and voice controls
- Includes a 16.4-foot copper pipe set
Cons
- Package does not include a power cord
- Total shipping weight is heavy at 220 pounds
- Efficiency rating of 21 SEER2 is lower than 25 SEER2 alternatives
Good fit if
- You need two equal 12,000 BTU zones rather than smaller 9,000 BTU units.
- You live in an area with extreme freezing temperatures down to -22°F.
- You plan to adjust settings via mobile app or voice control.
Skip if
- You want an installation kit that includes the power cord.
- You prefer the higher efficiency of a 25 SEER2 system.
- You only need 9,000 BTU capacity for smaller bedrooms.
Verdict: TOSOT Cosmo 24,000 BTU Dual Zone Mini Split provides balanced 12,000 BTU heating and cooling for two spaces facing severe outdoor weather. It fits homeowners who need dual-room coverage and reliable heating down to -22°F without oversizing a single zone.
Della 18K BTU Dual Zone Mini Split
Best for: Equal-sized dual rooms needing smart control
- Cooling Capacity
- 18000 BTU
- Efficiency Rating
- 22 SEER2
- Voltage
- 230V
- Coverage Area
- Up to 800 sq ft
- Number of Zones
- 2 Zone
- Heat Pump
- Heat pump
View on Amazon: Della 18K BTU Dual Zone Mini Split Affiliate link
This Della dual zone mini split delivers 18,000 BTU of cooling across two 9,000 BTU indoor units. It carries a 22 SEER2 efficiency rating and operates on 230V power. The system includes Wi-Fi connectivity for app and voice control, plus a 16.4ft installation kit. It covers up to 800 square feet and features inverter technology for energy savings. This model is designed for residential or light commercial spaces requiring balanced cooling in two separate areas.
Pros
- 22 SEER2 energy efficiency rating
- Dual zone configuration with two 9K BTU units
- Wi-Fi and smart home integration with Alexa and Google Home
- Includes 16.4ft copper line set kit
- Operates reliably down to -13°F
Cons
- Lower 22 SEER2 rating compared to 25 SEER2 competitors
- Equal 9K+9K split lacks flexible zone sizing options
- Self-cleaning function does not operate despite display indicator
Good fit if
- You need two rooms of equal size to cool
- You want smart app control with geo-location features
- You prefer a 230V system with included line sets
Skip if
- You require the highest 25 SEER2 efficiency available
- You need unequal zone capacities like 9K and 12K
- You want a ceiling cassette or different form factor
Verdict: Della 18K BTU Dual Zone Mini Split offers solid dual-zone cooling with smart features, but its 22 SEER2 rating and fixed 9K+9K split make it less efficient and flexible than top-tier alternatives.
Albott 20K BTU 2 Zone Mini Split
Best for: uneven room sizes and high efficiency needs
- Cooling Capacity
- 20,000 BTU
- Efficiency Rating
- 25 SEER2
- Voltage
- 208-230V
- Number of Zones
- 2 Zone
- Heat Pump
- Heat Pump
- Smart Connectivity
- WiFi, Smartphone App
View on Amazon: Albott 20K BTU 2 Zone Mini Split Affiliate link
The Albott 20K BTU dual zone mini split pairs a 9K and 12K indoor unit for flexible room cooling. It reaches 25 SEER2 efficiency and includes Wi-Fi app control. The system operates reliably from -13°F to 131°F with inverter technology. You get independent temperature settings for each zone, covering up to 400 and 550 square feet respectively. This setup suits homes needing uneven cooling power across two distinct areas.
Pros
- High 25 SEER2 efficiency rating for energy savings
- Wi-Fi app control for remote management
- Asymmetric 9K and 12K BTU zones for varied room sizes
- Wide operating temperature range from -13°F to 131°F
Cons
- Requires professional installation and line-set vacuuming
- Heavier 117-pound unit requires sturdy mounting
- Refrigerant charge adjustment needed if line sets are extended
Good fit if
- You need different cooling capacities for two rooms
- You want high efficiency with a 25 SEER2 rating
- You prefer managing your system via a smartphone app
Skip if
- You require a DIY installation without professional help
- You need identical cooling power for both zones
- You want a system that operates without Wi-Fi connectivity
Verdict: Albott 20K BTU Dual Zone Mini Split delivers targeted cooling with 25 SEER2 efficiency and app control, making it ideal for homeowners who need asymmetric BTU outputs for rooms of different sizes.
Specifications side by side
| Spec | Della 18K BTU Dual Zone Mini Split | ROVSUN 18K Dual Zone Ceiling Cassette | Albott 2 Zone 9K+12K BTU Mini Split | ROVSUN 28K BTU Dual Zone 20 SEER2 | TOSOT Cosmo 24K Dual Zone 21 SEER2 | Della 18K BTU Dual Zone Mini Split | Albott 20K BTU 2 Zone Mini Split |
|---|---|---|---|---|---|---|---|
| Cooling Capacity | 18,000 BTU/h | 18000BTU (9K/9K) | 9,000 + 12,000 BTU | 28000BTU (12K/12K) | 24,000 BTU | 18000 BTU | 20,000 BTU |
| Efficiency Rating | 25 SEER2 | 25 SEER2 | 25 SEER2 | 20 SEER2 | 21 SEER2 | 22 SEER2 | 25 SEER2 |
| Voltage | 208-230V | 208-230V | not stated | 208-230V | not stated | 230V | 208-230V |
| Coverage Area | Up to 800 Sq.Ft | not stated | Up to 950 Sq.Ft | not stated | not stated | Up to 800 sq ft | not stated |
| Number of Zones | Dual Zone | Dual Zone | 2 Zone | Dual Zone | 2 Zone | 2 Zone | 2 Zone |
| Heat Pump | Heat pump | Heat Pump | not stated | Heat Pump | Intelligent defrost heating | Heat pump | Heat Pump |
| Smart Connectivity | WiFi, App, Alexa | App control, Alexa, Google Assistant | WiFi, App | not stated | Gree+ app, voice control | WiFi, Alexa, Google Home, App | WiFi, Smartphone App |
| Mounting Type | not stated | not stated | not stated | Wall Mount | not stated | not stated | not stated |
| Smart Control | Wi-Fi, Alexa | Wi-Fi | Wi-Fi | not stated | not stated | Wi-Fi | Wi-Fi |
| Target Space | not stated | not stated | Office, Bedroom | not stated | not stated | not stated | not stated |
| Dimensions | 7.48 × 31.9 × 12.1 inches | 15 × 36.5 × 27.5 inches | 33.9 × 13.8 × 23.6 inches | 16.6 × 38.5 × 31.6 inches | 37.9 × 15.8 × 26 inches | 7.87 × 30.2 × 11.8 inches | 33.9 × 13.8 × 23.6 inches |
| Weight | 18.7 pounds | 200 pounds | 117 pounds | 152 pounds | 220 pounds | 16.5 pounds | 117 pounds |
| Size | 2 Zone 18000 BTU 9+9 | not stated | not stated | not stated | 24,000 BTU(Dual)12+12 | 2 Zone - 18000 BTU 9+9 | not stated |
| Color | White with Line set | White | White | White | White | White with Line set | White |
| Model | 1D2-TC+D99 | RS- 2 zone cassette ac-9+9 | SAC001 | 2 zone-27K/12K*2 | TST-MZ-C24-D1212-02 | 18KM+D99 | SAC002 |
If you already have cooling hardware and need controllers, you can evaluate mysa smart thermostat mini split heat alternatives.
Frequently asked questions
Which alternative offers the highest efficiency rating?
The ROVSUN 18K Dual Zone Ceiling Cassette and the Albott 2 Zone 9K+12K BTU Mini Split both achieve a 25 SEER2 rating. This is the highest efficiency score among the listed options. The Della 18K BTU Dual Zone Mini Split also reaches this 25 SEER2 level. Other models like the ROVSUN 28K BTU Dual Zone offer 20 SEER2, while the TOSOT Cosmo 24K provides 21 SEER2.
Can I use a mini split in very cold weather?
Yes, the TOSOT Cosmo 24K Dual Zone is designed for severe weather. It provides reliable heating down to -22°F. This makes it suitable for homeowners in climates with harsh winters. Most other units in this list do not specify such low-temperature heating capabilities in their published data.
Are there options for rooms of different sizes?
The Albott 2 Zone 9K+12K BTU Mini Split is ideal for uneven room sizes. It pairs a 9,000 BTU unit with a 12,000 BTU unit. The Albott 20K BTU 2 Zone Mini Split also offers asymmetric outputs for different space requirements. This flexibility allows you to match cooling capacity precisely to each room's needs.
Do these units support Wi-Fi smart controls?
Several models include Wi-Fi smart control capabilities. The ROVSUN 18K Dual Zone Ceiling Cassette, the Albott 2 Zone 9K+12K BTU Mini Split, and the Albott 20K BTU 2 Zone Mini Split all feature Wi-Fi connectivity. This allows you to manage settings remotely via mobile apps. Other models, such as the ROVSUN 28K BTU Dual Zone, do not list smart features.
What is the difference between wall and ceiling mounting?
Most units, including the Della and Albott models, are designed for wall mounting. The ROVSUN 18K Dual Zone Ceiling Cassette is built for ceiling installation. This cassette unit weighs 200 pounds, which is significantly heavier than typical wall-mounted indoor units. Ceiling mounting requires professional installation due to the weight and structural support needed.
Which alternative provides the most cooling power per zone?
The ROVSUN 28K BTU Dual Zone 20 SEER2 provides 12,000 BTU per zone. This is the highest per-zone capacity listed. The TOSOT Cosmo 24K also offers 12,000 BTU per zone. The Della and Albott models with 18K total capacity provide 9,000 BTU per zone. Choose the higher capacity if your rooms are larger or have significant heat gain.