As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Choosing the best 23000 btu mini split air conditioners requires careful attention to performance specs. We compared 3 models using only the data published on their listings. The COSTWAY 23000 BTU Mini Split leads this list because its 19 SEER2 rating offers strong efficiency for large spaces. This guide helps you decide which unit fits your room size and climate needs. You will find clear comparisons of cooling power, noise levels, and energy use to make an informed choice.
Check SEER2 ratings for efficiency
You should compare SEER2 ratings to gauge energy efficiency. Higher numbers mean lower operating costs. The DELLA Serena CloudAir offers 22 SEER2, while the COSTWAY model provides 19 SEER2. Both units deliver 23,000 BTU of heat output. Choose the higher rating if you prioritize long-term energy savings over other features.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | COSTWAY 23000 BTU Mini Split Best overall | large rooms needing quiet cooling and cold-weather heating | |
| 2 | DELLA Serena CloudAir 23000 BTU Best budget | Energy-efficient cooling with quiet, soft airflow | |
| 3 | Della Econo 23000 BTU Mini Split Best 17 seer2 | smart remote sensing and Alexa control |
The best fit for you
- You need quiet cooling and heating in large rooms – COSTWAY 23000 BTU Mini Split – Its 19 SEER2 rating and robust build suit large spaces needing year-round comfort.
- You want the highest energy efficiency on the list – DELLA Serena CloudAir 23000 BTU – The 22 SEER2 rating offers superior energy efficiency for long-term use.
- You want smart remote sensing and Alexa control – Della Econo 23000 BTU Mini Split – It supports Alexa voice control and smart remote sensing for precise comfort.
COSTWAY 23000 BTU Mini Split
Best for: large rooms needing quiet cooling and cold-weather heating
- Heat Output
- 23,000 BTU
- Cooling Capacity
- 23000 BTU
- Coverage Area
- 1500 sq ft
- SEER2 Rating
- 19 SEER2
- Voltage
- 208-230V
- Smart Compatibility
- Remote control
The COSTWAY 23000 BTU Mini Split delivers 23,000 BTU of cooling and 24,000 BTU of heating for spaces up to 1,500 square feet. It features a 19 SEER2 rating and 8.5 HSPF2 efficiency. This inverter unit operates quietly at 23 dB and includes 4D airflow swing. It supports 208-230V power and offers seven operating modes with five fan speeds for precise climate control.
- High efficiency with 19 SEER2 cooling and 8.5 HSPF2 heating ratings
- Ultra-quiet operation at just 23 dB for peaceful environments
- Versatile 4D airflow swing and seven distinct operating modes
- Reliable performance in extreme temperatures from 5°F to 118.4°F
- Heavier build at 30.9 pounds compared to lighter competitors
- Lower 8.5 HSPF2 heating efficiency versus the Della Econo Series 17 SEER2 unit
- Larger indoor unit dimensions at 44.6 inches wide
- You need a powerful unit for large rooms up to 1,500 sq ft
- You prioritize quiet operation with a 23 dB noise rating
- You require heating performance down to 5°F outdoor temperatures
- You prefer a lighter indoor unit under 30 pounds
- You need higher heating efficiency than 8.5 HSPF2
- You want a narrower indoor unit than 44.6 inches
Verdict: COSTWAY 23000 BTU Mini Split suits you if you need reliable heating in cold climates and quiet cooling for large spaces. Its robust build and extreme temperature ratings make it ideal for year-round comfort.
DELLA Serena CloudAir 23000 BTU
Best for: Energy-efficient cooling with quiet, soft airflow
- Heat Output
- 23,000 BTU
- Cooling Capacity
- 23,000 BTU
- Coverage Area
- Up to 1500 sq ft
- SEER2 Rating
- 22
- Voltage
- 230V
- Smart Compatibility
- WiFi, Alexa, Google Home
The DELLA Serena CloudAir Series delivers 23,000 BTU of cooling and heating power with a 22 SEER2 efficiency rating. It uses inverter technology to adjust compressor speed, reducing energy use by up to 57%. Soft airflow design prevents harsh drafts, while smart controls via WiFi and voice assistants offer convenience. It operates quietly at 30 dBa in mute mode and includes a base pan heater for reliable performance in cold weather.
- High 22 SEER2 energy efficiency rating
- Ultra-quiet operation at 30 dBa in mute mode
- Soft indirect airflow prevents harsh drafts
- Includes base pan heater for 5°F operation
- Smart control via WiFi and voice assistants
- Heavier indoor unit at 30.9 pounds
- Larger width of 44.9 inches
- Shorter 17 SEER2 rating on comparable Della Econo model
- You want high energy efficiency with a 22 SEER2 rating
- You need quiet operation with 30 dBa mute mode
- You want smart control via WiFi and voice assistants
- You need a smaller indoor unit width than 44.9 inches
- You prefer a lighter indoor unit than 30.9 pounds
- You want a higher SEER2 rating than 22
Verdict: DELLA Serena CloudAir 23,000 BTU suits buyers who prioritize energy efficiency and quiet operation. Its soft airflow and smart features make it a solid choice for comfortable, long-term use.
Della Econo 23000 BTU Mini Split
Best for: smart remote sensing and Alexa control
- Heat Output
- 23,000 BTU
- Cooling Capacity
- 23000 BTU/h
- Coverage Area
- Up to 1500 Sq. Ft
- SEER2 Rating
- 17 SEER2
- Voltage
- 208-230V
- Smart Compatibility
- Alexa, Wi-Fi, remote control
The Della Econo Series delivers 23,000 BTU of cooling and heating for spaces up to 1500 square feet. It operates at 17 SEER2 efficiency on 230V power. This unit includes a smart remote that senses room temperature for precise comfort control. It runs quietly at 37 dBa and supports Alexa voice commands. You get a complete installation kit with copper pipes. This model suits buyers who need reliable ductless climate control with smart features.
- 17 SEER2 energy efficiency rating
- Covers up to 1500 square feet
- Remote control senses room temperature
- Operates at 37 dBa noise level
- Compatible with Alexa voice control
- Lower 17 SEER2 rating compared to 19 SEER2 competitors
- Heavier 101-pound build weight
- Larger 39.8-inch width dimension
- You need smart temperature sensing via the remote
- You want Alexa voice control integration
- You require quiet 37 dBa operation
- You prioritize the highest SEER2 efficiency available
- You prefer a lighter unit under 100 pounds
- You need a narrower indoor unit under 39 inches
Verdict: Della 23,000 BTU 17 SEER2 Mini Split fits users who value smart remote sensing and Alexa compatibility over peak efficiency ratings. It is a solid choice for medium-sized rooms where quiet operation and precise comfort control matter most.
Specifications side by side
| Spec | COSTWAY 23000 BTU Mini Split | DELLA Serena CloudAir 23000 BTU | Della Econo 23000 BTU Mini Split |
|---|---|---|---|
| Cooling Capacity | 23000 BTU | 23,000 BTU | 23000 BTU/h |
| Coverage Area | 1500 sq ft | Up to 1500 sq ft | Up to 1500 Sq. Ft |
| SEER2 Rating | 19 SEER2 | 22 | 17 SEER2 |
| Voltage | 208-230V | 230V | 208-230V |
| Smart Compatibility | Remote control | WiFi, Alexa, Google Home | Alexa, Wi-Fi, remote control |
| Operating Modes | Cool, heat, dry, fan, auto, sleep, ECO | – | Cooling, heating, auto, dry |
| Features | Inverter | Inverter | Inverter |
| Control Method | – | Wi-Fi, Wi-Fi App Control, Wi-Fi App, Voice Control | Wi-Fi, Wi-Fi App Control, Wi-Fi App, Voice Control |
| Color | White | White | White |
| Operating Mode | Heater | Heater | Heater |
| SEER Rating | 19 SEER2 | – | 17 SEER2 |
| Mounting Type | Wall-Mounted | – | – |
| Heat Output | 23,000 BTU | 23,000 BTU | 23,000 BTU |
| Dimensions | 13 × 44.6 × 9.13 inches | 9 × 44.9 × 13.2 inches | 8.66 × 39.8 × 12.4 inches |
| Weight | 30.9 pounds | 30.9 pounds | 101 pounds |
| Size | 23000BTU, 208-230V, 19 SEER2 | CloudAir – 23,000 BTU 230V – 22 SEER2 | 23,000 BTU 230V – 17 SEER2 |
| Model | 11090-CYFP | 24K2VR-22S-MX-I+O | IF-23K2VR-17S-I+O |
Key Specs for Choosing 23000 BTU Units
Check Smart Compatibility
You should verify voice control options if you use smart home devices. The DELLA Serena CloudAir supports Alexa, allowing you to adjust settings via voice commands. The DELLA Econo also includes Alexa compatibility for similar convenience. The COSTWAY model does not list voice control in its attributes. If you prefer managing your climate through voice assistants, prioritize models with explicit smart compatibility listed in the specifications. This feature adds ease of use without requiring a separate app interface for basic adjustments.
Review Control Methods
Examine the control method to ensure you have the right interface. Both DELLA models offer Wi-Fi app control and voice control options. This setup lets you manage temperature and modes remotely from your smartphone. The COSTWAY listing does not mention Wi-Fi or app control capabilities. If remote management is important for your routine, the DELLA units provide that functionality. Check the attributes section to confirm which control methods are included before making your final decision based on your connectivity needs.
Compare SEER2 Ratings
Look at the SEER2 rating to understand energy efficiency. Higher numbers indicate better efficiency and lower operating costs over time. The DELLA Serena CloudAir leads with a 22 SEER2 rating. The COSTWAY model offers a 19 SEER2 rating, which is still strong. The DELLA Econo provides a 17 SEER2 rating. You should compare these numbers to find the unit that best fits your energy goals. The difference in ratings can impact your long-term electricity usage and overall cost of ownership.
Assess Physical Dimensions
Measure your installation space against the unit dimensions. The DELLA Econo is the widest at 39.8 inches, while the DELLA Serena is 44.9 inches wide. The COSTWAY model measures 44.6 inches in width. Height and length also vary, with the DELLA Serena being the tallest at 13.2 inches. Ensure your wall space can accommodate the specific width and height of your chosen model. Accurate measurements prevent installation issues and ensure the unit fits properly within your designated area without obstruction.
Note Operating Modes
Confirm the unit supports heating if you need year-round comfort. All three models listed support heating operating modes. The COSTWAY model is described as suitable for cold-weather heating with robust build quality. The DELLA models also list heating as an operating mode. You should verify that the specific unit you choose includes heating functionality. This ensures the system provides warmth during colder months, making it a versatile solution for both cooling in summer and heating in winter for your space.
Frequently asked questions
Which 23000 BTU mini split has the highest SEER2 rating?
The DELLA Serena CloudAir 23000 BTU holds the highest SEER2 rating at 22. This figure indicates superior energy efficiency compared to other models on the list. The COSTWAY unit follows with 19 SEER2, while the DELLA Econo offers 17 SEER2. Higher ratings generally mean lower long-term operating costs for your home.
Do these units support voice control via Alexa?
Yes, two models on this list support Alexa voice control. The DELLA Serena CloudAir and the DELLA Econo both include Wi-Fi app control and smart compatibility with Alexa. This allows you to adjust settings using voice commands. The COSTWAY model does not list smart compatibility in its published specifications.
How wide is the indoor unit for a 23000 BTU mini split?
The width varies slightly among the top three models. The DELLA Serena CloudAir measures 44.9 inches wide. The COSTWAY 23000 BTU Mini Split is 44.6 inches wide. The DELLA Econo is narrower at 39.8 inches wide. You should measure your wall space to ensure the unit fits your intended mounting location.
Can these mini splits provide heating in cold weather?
Yes, all three listed models are designed for heating. Their attributes list heating as a primary operating mode. The COSTWAY model is specifically noted for robust build quality and extreme temperature ratings, making it suitable for cold climates. The other DELLA models also support heating operation for year-round comfort.
What is the weight of the indoor 23000 BTU unit?
Most units weigh around 30.9 pounds. Both the COSTWAY and DELLA Serena CloudAir models list this weight. The DELLA Econo is significantly heavier at 101 pounds. You should check the weight specifications to determine if you need additional mounting support for your wall installation.
Do these units use inverter technology?
Yes, all three featured models utilize inverter technology. This feature is listed in the attributes for the COSTWAY, DELLA Serena CloudAir, and DELLA Econo units. Inverter systems adjust compressor speed to maintain temperature, which can improve efficiency and reduce noise compared to non-inverter units.
What voltage do these 23000 BTU mini splits require?
All three models operate on 230V power. This voltage is standard for larger mini split systems in the United States. You must ensure your home has the correct electrical circuit available for installation. The specifications confirm this requirement for the COSTWAY, DELLA Serena CloudAir, and DELLA Econo units.