Comfort Temps Energy-Saving 18000 BTU / 230V Mini Split Alternatives: 6 Similar Picks Compared
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You are looking at comfort temps energy saving 18000 btu 230v mini split alternatives to find the right fit for your space. This original model offers 21 SEER2 efficiency, Wi-Fi control, and quiet operation for areas between 550 and 1,000 square feet. It runs on 230V power and includes pre-charged R454B refrigerant for eco-friendly performance. These specs make it a strong choice for medium-sized rooms that need reliable heating and cooling.
You might want a different option if your room is smaller, larger, or requires a different voltage. Some buyers prefer a lower capacity for tighter budgets or a higher capacity for open floor plans. Others may prioritize specific smart features or brand reliability. The 6 similar picks compared here were chosen because their specifications overlap with the original unit. Each alternative shares key traits like 21 SEER2 efficiency and 230V compatibility, ensuring you can compare practical differences in size, connectivity, and capacity without guessing.
Our top pick: Comfort Temps 18k BTU 230V Mini Split.
How the alternatives differ
Rellytech 18k BTU 21 SEER2 Mini Split
The Rellytech model matches the original’s 18,000 BTU capacity and 21 SEER2 efficiency rating while offering similar 230V compatibility. It features Wi-Fi connectivity for smart control, just like the Comfort Temps unit. The indoor unit is slightly wider at 39.6 inches compared to 40 inches, and it stands taller at 9.5 inches versus 8.7 inches. It weighs slightly less at 95.1 pounds. This unit is a direct competitor for medium-sized spaces. You get comparable performance with minor dimensional differences. It suits buyers who want the same efficiency and smart features but prefer a slightly different form factor. The heating capabilities are robust for cold climates, aligning with the original’s year-round performance focus.
COSTWAY 9000 BTU Mini Split 21 SEER2
The COSTWAY unit drops the cooling capacity to 9,000 BTU while maintaining the 21 SEER2 efficiency rating and 230V operation. It includes Wi-Fi smart control, matching the original’s connectivity. However, its indoor unit is significantly smaller, measuring 31.9 inches wide and 12.1 inches tall. It weighs only 19.8 pounds, making it much lighter than the 98.1-pound original. This model is designed for smaller rooms where 18,000 BTU would be excessive. You sacrifice raw cooling power for a compact footprint and lower weight. It is ideal for small spaces or supplemental cooling. The efficiency remains high, ensuring energy savings despite the reduced capacity. Choose this if your space is under 550 square feet.
TOSOT 33,600 BTU 21 SEER2 Mini Split
The TOSOT model increases capacity to 36,000 BTU while keeping the 21 SEER2 efficiency and 230V voltage. It offers Wi-Fi smart control, similar to the original. The indoor unit is narrower at 29.4 inches but much taller at 16.8 inches. It weighs significantly more at 181 pounds. This unit is built for large rooms requiring high cooling output. You gain substantial capacity but take up more vertical space and require stronger electrical support. It is not suitable for small or medium spaces. The R-32 refrigerant is noted in its specs. This pick is for homeowners with large open areas who need powerful cooling and heating. It exceeds the original’s capacity by double.
Della Vario 24K BTU 21 SEER2
The Della Vario provides 24,000 BTU of cooling with 21 SEER2 efficiency and 230V operation. It includes Wi-Fi and Alexa smart control, matching the original’s connectivity. The indoor unit is wider at 46.9 inches and taller at 14.2 inches. It weighs 36.4 pounds, which is lighter than the original’s 98.1 pounds. This model targets larger rooms needing strong cooling performance. You get extra capacity and voice control compatibility. The unit is designed for professional installation due to its size and power requirements. It is a robust option for spaces larger than 1,000 square feet. The efficiency rating remains competitive. Choose this if you need more power than the 18,000 BTU original provides.
YITAHOME 18,000 BTU 21 SEER2 Mini Split
The YITAHOME 18,000 BTU model matches the original’s capacity, 21 SEER2 efficiency, and 230V voltage. It features Wi-Fi smart control. The indoor unit is slightly narrower at 38.8 inches but taller at 12.4 inches. It weighs 98 pounds, nearly identical to the original’s 98.1 pounds. This unit is designed for medium-sized rooms. You get comparable performance with a slightly different indoor unit shape. It emphasizes Alexa integration alongside standard app control. This is a solid alternative for those who want the same capacity and efficiency but prefer a different brand. The dimensions are close enough to fit similar wall spaces. It is a practical choice for standard residential installations.
YITAHOME 12000 BTU 21 SEER2 Mini Split
The YITAHOME 12,000 BTU unit reduces capacity to 12,000 BTU while keeping 21 SEER2 efficiency and 230V operation. It includes Wi-Fi smart control. The indoor unit is narrower at 29.9 inches and taller at 11.6 inches. It weighs only 19.3 pounds, much lighter than the original. This model is suited for smaller rooms up to 750 square feet. You sacrifice cooling power for a compact and lightweight design. It is ideal for spaces where 18,000 BTU is too much. The efficiency rating ensures energy savings. Choose this if you need a quieter, smaller unit for a bedroom or office. It maintains the smart features of the original.
Quick picks
Our 7 picks
Comfort Temps 18k BTU 230V Mini Split
Best for: 230V homes needing smart, efficient cooling
- Cooling Capacity
- 18,000 BTU
- Efficiency Rating
- 21 SEER2
- Voltage
- 208/230V
- Coverage Area
- 550 to 1000 sq. ft.
- Smart Connectivity
- Wi-Fi, App, Alexa, Google Assistant
- Dimensions
- 12.4 × 40 × 8.7 inches
The Comfort Temps 18,000 BTU mini split delivers 21 SEER2 efficiency on 208/230V power. It covers 550 to 1,000 sq. ft. with quiet 7-speed fan operation. Smart Wi-Fi control includes geolocation and voice assistant compatibility. The unit uses eco-friendly R454B refrigerant and includes a 16.4 ft. line set. It offers reliable heating and cooling for year-round comfort in moderate climates.
Pros
- 21 SEER2 energy efficiency rating
- Wi-Fi app control with geolocation
- Includes 16.4 ft. copper line set
- R454B eco-friendly refrigerant
- 7-speed fan for quiet operation
Cons
- Requires professional refrigerant balancing
- Heavier build at 98.1 pounds
- Limited to 550 to 1,000 sq. ft.
Good fit if
- You need a 230V unit for larger rooms
- You want smart geolocation features
- You prefer eco-friendly refrigerant
Skip if
- You only have 120V outlets
- You need to cool over 1,000 sq. ft.
- You want a lighter, easier install
Verdict: Comfort Temps 18k BTU 230V Mini Split fits homeowners with 230V power who want smart control and high efficiency. It suits those who value quiet operation and eco-friendly refrigerant in medium-sized spaces.
Rellytech 18k BTU 21 SEER2 Mini Split
Best for: cold-weather heating and smart control
- Cooling Capacity
- 18000 BTU
- Efficiency Rating
- 21 SEER2
- Voltage
- 208V/230V
- Coverage Area
- up to 1250sq.ft
- Heat Pump
- Heat Pump
- Smart Control
- Wi-Fi
The Rellytech 18000 BTU 230V Mini Split offers 21 SEER2 efficiency for spaces up to 750 sq ft. It includes Wi-Fi control, voice commands, and a digital remote. The unit operates on 208V/230V power and uses R454B refrigerant. It features multiple modes like turbo, sleep, and eco. This system provides reliable cooling and heating with an ETL and AHRI certification for safe operation in various environments.
Pros
- 21 SEER2 efficiency rating for energy savings
- Wi-Fi and voice command smart control
- Operates in temperatures from -13°F to 122°F
- Includes digital display remote for direct access
Cons
- Heavier build at 95.1 pounds
- Requires licensed HVAC technician for installation
- Power cord not included in the kit
Good fit if
- You need a 230V unit for larger rooms up to 750 sq ft
- You want smart control via Wi-Fi or voice
- You require heating performance in cold weather down to -13°F
Skip if
- You only have a 115V electrical outlet
- You prefer a lighter indoor unit under 90 pounds
- You want a power cord included in the box
Verdict: Rellytech 18000 BTU 230V Mini Split suits those needing robust heating in cold climates and smart home integration. It fits well in spaces with 230V power where Wi-Fi control is a priority.
COSTWAY 9000 BTU Mini Split 21 SEER2
Best for: smaller rooms needing 230V efficiency
- Cooling Capacity
- 9000 BTU
- Efficiency Rating
- 21 SEER2
- Voltage
- 208/230V
- Coverage Area
- Up to 450 Sq. Ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- WiFi, Alexa, Google Assistant, App
This COSTWAY unit offers 9,000 BTU cooling and heating for rooms up to 450 sq.ft. It runs on 208/230V power and achieves a 21 SEER2 efficiency rating. The system includes Wi-Fi connectivity for app control and works with voice assistants. You get seven operating modes and a 4D airflow design for even temperature distribution. It operates quietly at 28 dB and features a self-clean function for low maintenance.
Pros
- 21 SEER2 efficiency rating for energy savings
- Wi-Fi and app control with Alexa/Google support
- Operates reliably from -4°F to 127°F
- Quiet operation at 28 dB
- 7 modes including ECO and sleep settings
Cons
- 9,000 BTU capacity is half the list average
- Coverage area limited to 450 sq.ft.
- No 240V option available in variations
Good fit if
- You need a 230V system for a smaller room
- You want high efficiency in a compact unit
- You prefer app and voice control options
Skip if
- You need 18,000 BTU for a larger space
- You require a 24,000 BTU high-capacity model
- You need a standard 115V plug-in unit
Verdict: COSTWAY 9000 BTU Mini Split 21 SEER2 is a compact, efficient choice for smaller rooms where 18,000 BTU units would be overkill. It fits buyers who prioritize energy savings and smart control in a smaller footprint.
TOSOT 33,600 BTU 21 SEER2 Mini Split
Best for: large rooms needing high capacity
- Cooling Capacity
- 33,600 BTU
- Efficiency Rating
- 21 SEER2
- Voltage
- 208-230V
- Heat Pump
- Heating System
- Smart Connectivity
- Wi-Fi, GREE+ app, voice control
- Dimensions
- 39.4 × 29.4 × 16.8 inches
This TOSOT unit delivers 33,600 BTU of cooling and heating at 21 SEER2 efficiency on a 230V circuit. It includes Wi-Fi control via the GREE+ app and voice commands. The system operates quietly between 22dB and 36dB. It comes with a 16-foot copper line set and essential installation accessories. This model suits larger spaces needing robust climate control.
Pros
- 33,600 BTU cooling capacity
- 21 SEER2 energy efficiency
- Wi-Fi and voice control
- Includes 16 ft. line set
- Quiet 22dB–36dB operation
Cons
- 33,600 BTU exceeds 18,000 BTU target
- Large 181-pound indoor unit
- Requires professional installation
Good fit if
- You need high cooling capacity
- You want smart app control
- You have a 230V circuit
Skip if
- You need exactly 18,000 BTU
- You prefer a compact unit
- You want a 115V plug
Verdict: TOSOT 34k BTU 230V Mini Split offers high capacity and smart features for larger rooms, but its size and power exceed standard 18,000 BTU requirements.
Della Vario 24K BTU 21 SEER2
Best for: larger rooms needing strong cooling
- Cooling Capacity
- 24,000 BTU/h (2 Ton)
- Efficiency Rating
- 21 SEER2
- Voltage
- 208–230V
- Coverage Area
- up to 1500 Sq. Ft
- Heat Pump
- Heat pump
- Smart Connectivity
- Wifi, Alexa
The Della Vario Series offers 24,000 BTU of cooling and heating for spaces up to 1,500 square feet. It operates on 208–230V power with a 21 SEER2 efficiency rating. This unit includes smart Wi-Fi connectivity and Alexa support. You get a remote sensor for precise temperature control and quiet operation at 36 dBa. It is designed for professional installation and includes a full installation kit.
Pros
- 24,000 BTU cooling capacity for larger rooms
- 21 SEER2 efficiency rating for energy savings
- Wi-Fi and Alexa smart connectivity
- Remote temperature sensor for personalized comfort
- Quiet operation at 36 dBa
Cons
- Requires professional installation, not DIY
- Larger 46.9-inch indoor unit size
- Refrigerant adjustment needed for lines over 25 ft
Good fit if
- You need extra cooling power for a 1,500 sq ft space
- You want smart home integration with Alexa
- You prefer precise temperature control via remote sensor
Skip if
- You are looking for a DIY-friendly setup
- You have limited wall space for a 46.9-inch unit
- You need a smaller 18,000 BTU capacity
Verdict: Della Vario 24000 BTU Mini Split suits those who need robust cooling for larger areas and value smart features. It is a strong option for homeowners willing to hire a professional installer.
YITAHOME 18,000 BTU 21 SEER2 Mini Split
Best for: Medium rooms needing smart control and 230V power
- Cooling Capacity
- 18000 BTU (1.5 Ton)
- Efficiency Rating
- 21 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 1250 Sq. Ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- WiFi, Alexa
This YITAHOME unit delivers 18,000 BTU of cooling and heating power for spaces up to 1,250 square feet. It operates on 208-230V and achieves a 21 SEER2 efficiency rating. The system includes WiFi connectivity and Alexa compatibility for remote control. It features five operational modes and maintains noise levels below 49 decibels. This model suits you if you need reliable comfort for medium-sized rooms or commercial spaces with standard electrical setups.
Pros
- 21 SEER2 energy efficiency rating
- WiFi and Alexa smart control
- Five operational modes including auto, cool, dry, heat, and fan
- Quiet operation below 49 decibels
- Covers areas up to 1,250 square feet
Cons
- Noise level is under 49 dB, which is higher than the quietest competitors
- Does not mention a dedicated mobile app, relying on WiFi and Alexa
- Excludes shut-off valves and side protection grille from the installation kit
Good fit if
- You need 18,000 BTU capacity for a 1,250 square foot room
- You have a 208-230V electrical circuit available
- You want smart control via Alexa or WiFi
Skip if
- You require a dedicated smartphone app for control
- You need a unit quieter than 49 decibels
- You prefer a complete installation kit with shut-off valves included
Verdict: YITAHOME 18000 BTU 21 SEER2 Mini Split offers solid efficiency and smart features for medium spaces. It fits buyers who prioritize Alexa integration and 230V power over ultra-quiet performance or app-based control.
YITAHOME 12000 BTU 21 SEER2 Mini Split
Best for: smaller rooms needing smart quiet operation
- Cooling Capacity
- 12,000 BTU
- Efficiency Rating
- 21 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 750 sq. ft.
- Heat Pump
- Heat Pump
- Smart Connectivity
- WiFi, Alexa, phone control
This YITAHOME unit delivers 12,000 BTU of cooling and heating with a 21 SEER2 efficiency rating. It operates on 208-230V power and covers up to 750 square feet. WiFi and Alexa integration allow remote control. The indoor unit runs quietly at under 41 dB. It includes five modes and four fan speeds for tailored comfort.
Pros
- 21 SEER2 efficiency rating for energy savings
- WiFi and Alexa smart connectivity
- Quiet operation under 41 dB
- Covers up to 750 sq ft
Cons
- 12,000 BTU capacity is lower than the 18,000 BTU units on this list
- Indoor unit width is 29.9 inches, which is bulkier than some alternatives
- Requires professional installation
Good fit if
- You need smart control via WiFi or Alexa
- You want a quiet unit for bedrooms
- You have a 208-230V electrical setup
Skip if
- You need 18,000 BTU or higher cooling power
- You require a 115V standard outlet
- You prefer a more compact indoor unit
Verdict: YITAHOME 12000 BTU 21 SEER2 Mini Split suits smaller rooms where quiet operation and smart features matter more than raw cooling capacity. It is a practical option for spaces up to 750 sq ft.
Specifications side by side
| Spec | Comfort Temps 18k BTU 230V Mini Split | Rellytech 18k BTU 21 SEER2 Mini Split | COSTWAY 9000 BTU Mini Split 21 SEER2 | TOSOT 33,600 BTU 21 SEER2 Mini Split | Della Vario 24K BTU 21 SEER2 | YITAHOME 18,000 BTU 21 SEER2 Mini Split | YITAHOME 12000 BTU 21 SEER2 Mini Split |
|---|---|---|---|---|---|---|---|
| Cooling Capacity | 18,000 BTU | 18000 BTU | 9000 BTU | 33,600 BTU | 24,000 BTU/h (2 Ton) | 18000 BTU (1.5 Ton) | 12,000 BTU |
| Efficiency Rating | 21 SEER2 | 21 SEER2 | 21 SEER2 | 21 SEER2 | 21 SEER2 | 21 SEER2 | 21 SEER2 |
| Voltage | 208/230V | 208V/230V | 208/230V | 208-230V | 208–230V | 208-230V | 208-230V |
| Coverage Area | 550 to 1000 sq. ft. | up to 1250sq.ft | Up to 450 Sq. Ft | not specified | up to 1500 Sq. Ft | Up to 1250 Sq. Ft | Up to 750 sq. ft. |
| Heat Pump | not specified | Heat Pump | Heat Pump | Heating System | Heat pump | Heat Pump | Heat Pump |
| Smart Connectivity | Wi-Fi, App, Alexa, Google Assistant | not specified | WiFi, Alexa, Google Assistant, App | Wi-Fi, GREE+ app, voice control | Wifi, Alexa | WiFi, Alexa | WiFi, Alexa, phone control |
| Smart Control | Wi-Fi | Wi-Fi | Wi-Fi, Alexa | Wi-Fi | Wi-Fi, Alexa | Wi-Fi, Alexa | Wi-Fi, Alexa |
| Dimensions | 12.4 × 40 × 8.7 inches | 12.4 × 39.6 × 9.5 inches | 7.48 × 31.9 × 12.1 inches | 39.4 × 29.4 × 16.8 inches | 10.3 × 46.9 × 14.2 inches | 8.9 × 38.8 × 12.4 inches | 7.8 × 29.9 × 11.6 inches |
| Weight | 98.1 pounds | 95.1 pounds | 19.8 pounds | 181 pounds | 36.4 pounds | 98 pounds | 19.3 pounds |
| Size | 18,000 BTU 208/230V | 18000BTU,230V,21 SEER2-WiFi | not specified | WiFi - 36,000 BTU 230V (R 32 Refrigerant) | 24,000 BTU - 230V / 21 SEER2 | not specified | 12000 BTU 208-230V / 21 SEER2 |
| Color | White | White | White | White | White | White | White |
| Model | CEL-BH182A-K | CE0-1 | Blast Pro | GWH36ATEXH-D6DNA1G/O | TL-24K2VB-21S-I+O | MAYIHqDjgf | MAYIHO3QoF |
Frequently asked questions
Can I use these mini splits without a 230V outlet?
No. Every model in this list requires a 230V power supply. The Comfort Temps, Rellytech, and COSTWAY units all specify 230V compatibility. If your home only has standard 110V outlets, you will need an electrician to install the proper circuit. Using these units on incorrect voltage can damage the compressor and void safety certifications.
Which unit is best for a small room under 500 square feet?
The COSTWAY 9000 BTU model is the most appropriate choice for smaller spaces. Its 9,000 BTU capacity prevents overcooling in areas under 500 square feet. The compact indoor unit measures 31.9 inches wide and weighs only 19.8 pounds. It still offers 21 SEER2 efficiency and Wi-Fi control, ensuring you do not sacrifice smart features for size.
Do all these models support Wi-Fi control?
Yes. All seven units listed include built-in Wi-Fi connectivity. This allows you to control the temperature, fan speed, and scheduling from your smartphone. The Comfort Temps, Rellytech, COSTWAY, TOSOT, Della, and both YITAHOME models feature this standard. You do not need to purchase separate adapters or hubs to enable remote management for any of these systems.
Is the TOSOT 33,600 BTU unit too powerful for a standard bedroom?
It is likely too powerful for most standard bedrooms. The TOSOT model delivers 33,600 BTU, which is nearly double the capacity of the 18,000 BTU Comfort Temps unit. This high capacity is designed for large open areas or commercial spaces. Using it in a small room may cause rapid cycling and humidity issues. Consider the Della 24,000 BTU model for larger rooms instead.
Which model offers the best integration with Alexa?
The Della Vario 24K BTU model explicitly lists Alexa integration in its smart control attributes. While other units offer Wi-Fi control via apps, the Della model is highlighted for direct voice command compatibility. This makes it a practical choice if you already use Alexa devices for home automation. You can adjust settings hands-free without opening a dedicated mobile application.
How do the dimensions of the indoor units compare?
The indoor units vary significantly in size. The TOSOT model is the widest at 29.4 inches but also the tallest at 16.8 inches. The COSTWAY unit is the most compact, measuring 31.9 inches wide and only 12.1 inches tall. The Comfort Temps indoor unit is 40 inches wide. You should measure your wall space carefully, as the width of the indoor casing affects installation options.
Are these units suitable for cold weather heating?
Yes. All listed models are heat pumps capable of providing heating in cold weather. The Rellytech unit is specifically noted for robust heating performance in cold climates. These systems extract heat from the outdoor air even when temperatures drop. The 21 SEER2 rating applies to cooling efficiency, but the heating capacity is determined by the BTU output and inverter technology.
What is the difference between the two YITAHOME models?
The two YITAHOME models differ in cooling capacity and physical size. The 18,000 BTU unit is designed for medium rooms and weighs 98 pounds. The 12,000 BTU unit is lighter at 19.3 pounds and suits smaller spaces up to 750 square feet. Both offer 21 SEER2 efficiency and Wi-Fi control. Choose the 18,000 BTU version for larger areas and the 12,000 BTU version for tighter spaces.