TOSOT or Rellytech? Mini Splits Compared in 2026
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This TOSOT vs rellytech mini split comparison looks at two distinct inverter systems. Both units offer ductless cooling and heating with smart connectivity options. They share a similar white finish and inverter technology for efficient operation. The main difference lies in capacity and voltage. The TOSOT is a 9,000 BTU unit designed for smaller spaces, while the Rellytech provides 18,000 BTU for larger areas. You need to match the specs to your room size and electrical setup.
Key differences
| Aspect | TOSOT 9,000 BTU 230V Mini Split | Rellytech 18000 BTU 230V Mini Split |
|---|---|---|
| Cooling Capacity | 9,000 BTU | 18,000 BTU |
| Efficiency Rating | 20.5 SEER2 | 19 SEER2 |
| Voltage | 230V | 208-230V |
| Smart Control | Wi-Fi, Alexa, GREE+ App | Not listed |
| Coverage Area | Not listed | Up to 1,250 sq. ft. |
Which one should you choose?
Choose TOSOT 9,000 BTU 230V Mini Split if
- You need a unit for a smaller room under 400 sq. ft.
- You want the highest SEER2 rating for maximum efficiency.
- You require built-in Wi-Fi and app control.
Choose Rellytech 18000 BTU 230V Mini Split if
- You are cooling a larger space up to 1,250 sq. ft.
- You need a higher heating capacity of 18,400 BTU.
- You prefer a unit that accepts 208V or 230V input.
Verdict: Choose the TOSOT if you are outfitting a small bedroom or office and value smart app features and higher energy efficiency. Pick the Rellytech if you need to cool a larger open area and require more raw cooling and heating power. Your choice depends entirely on the square footage you need to condition.
TOSOT and Rellytech Mini Split Showdown
Cooling Capacity
The TOSOT unit provides 9,000 BTU of cooling power, making it suitable for smaller rooms or spaces up to roughly 400 square feet. The Rellytech model doubles that output with 18,000 BTU, covering areas up to 1,250 square feet. If you need to cool a large living room, garage, or open floor plan, the Rellytech handles the load much better. The TOSOT is better suited for bedrooms or small offices where less airflow is preferred. Choose based on your room size.
Energy Efficiency
Efficiency ratings determine how much electricity each system uses to produce cooling. The TOSOT achieves a 20.5 SEER2 rating, which is higher than the Rellytech’s 19 SEER2. This means the TOSOT converts more electricity into cooling effect, potentially lowering your monthly energy bills over time. The Rellytech does list an HSPF2 of 8.5 for heating efficiency, but for pure cooling performance, the TOSOT has the edge. Higher SEER2 values generally indicate better long-term operating costs.
Smart Control
Connectivity options allow you to manage your comfort from anywhere. The TOSOT includes built-in Wi-Fi and works with the GREE+ app and voice assistants like Alexa. You can schedule operations or adjust temperatures remotely. The Rellytech data does not explicitly mention built-in Wi-Fi or a companion app for this specific model. While it may have smart features, the TOSOT offers verified, immediate smartphone control out of the box. If remote management is a priority, the TOSOT is the clearer choice.
Voltage Compatibility
Electrical requirements vary by installation site. The TOSOT operates strictly on 230V power, which is standard for most mini-split installations in the US. The Rellytech supports a wider range, accepting both 208V and 230V. This flexibility can be helpful if your home’s electrical panel provides 208V, common in some apartment complexes or commercial setups. If you have a standard 230V outlet, both work fine. The Rellytech wins slightly for versatility in older or specific commercial electrical environments.
Physical Dimensions
Space constraints matter when mounting the indoor unit. The TOSOT is taller at 31.1 inches but narrower at 23.2 inches wide. The Rellytech is much shorter at 9.5 inches high but significantly wider at 39.6 inches. The TOSOT fits better in tight vertical spaces or above standard door frames. The Rellytech’s low profile suits wide walls where height is limited. Your wall layout dictates which shape fits better. Neither is universally superior; it depends on your available mounting space.
Which Mini Split Fits Your Needs?
Small room owner seeking quiet operation
The TOSOT unit delivers 9,000 BTU of cooling, which is ideal for smaller spaces up to roughly 400 square feet. Its inverter compressor runs quietly at just 22dB to 36dB, making it suitable for bedrooms or nurseries. You also get smart control via the GREE+ app and voice commands for convenient scheduling.
Large space owner needing high capacity
The Rellytech model provides 18,000 BTU of cooling and 18,400 BTU of heating, covering areas up to 1,250 square feet. This higher capacity makes it better for larger rooms, garages, or open living areas. You get four fan speeds and a 90-degree vertical swing for customizable airflow distribution across the room.
User prioritizing energy efficiency
The TOSOT mini split offers a 20.5 SEER2 efficiency rating, which is higher than the Rellytech unit's 19 SEER2. This means the TOSOT system uses less energy to produce the same cooling output. You benefit from lower power consumption and potentially reduced electricity bills during both summer cooling and winter heating seasons.
The products compared
TOSOT 9,000 BTU 230V Mini Split
Best for: small rooms needing quiet, smart cooling
- Cooling Capacity
- 9,000 BTU
- Efficiency Rating
- 20.5 SEER2
- Voltage
- 230V
- Heat Pump
- Heating System
- Smart Connectivity
- Wifi, Alexa, GREE+ app
- Smart Control
- Wi-Fi, Alexa
View on Amazon: TOSOT 9,000 BTU 230V Mini Split Affiliate link
This TOSOT unit delivers 9,000 BTU of cooling and heating via a 20.5 SEER2 inverter compressor. It operates on 230V power and includes Wi-Fi connectivity for app control. The indoor unit measures 23.2 by 31.1 inches and runs quietly at 22dB. It comes with a 16 ft copper line set. This model suits smaller rooms needing efficient, smart climate control.
Pros
- 20.5 SEER2 efficiency rating for energy savings
- Wi-Fi and GREE+ app control with voice support
- Includes 16 ft copper line set for installation
- Quiet operation at 22dB to 36dB
Cons
- 9,000 BTU capacity is too small for large spaces
- Requires professional installation for vacuuming and refrigerant
- Limited to 230V electrical connection
Good fit if
- You need efficient cooling for a small bedroom
- You want app control for scheduling comfort
- You have a 230V outlet available
Skip if
- You need to cool a large open living area
- You require a 115V standard outlet
- You want to install the unit yourself without pros
Verdict: TOSOT 9,000 BTU Mini-Split offers high efficiency and smart features for small rooms. It fits users who value quiet operation and app control in spaces under 300 square feet.
Rellytech 18000 BTU 230V Mini Split
Best for: Large rooms needing 18k BTU cooling
- Cooling Capacity
- 18,000 BTU
- Efficiency Rating
- 19 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 1,250 sq. ft.
- Heat Pump
- Heat Pump
- Dimensions
- 9.02 × 40.4 × 12.6 inches
View on Amazon: Rellytech 18000 BTU 230V Mini Split Affiliate link
This Rellytech mini split delivers 18,000 BTU of cooling and 18,400 BTU of heating for spaces up to 1,250 square feet. It operates on 208-230V power and carries a 19 SEER2 efficiency rating. The unit includes four fan speeds and a 90-degree vertical swing for customizable airflow. It supports cooling, heating, fan, and dry modes, along with an ECO function for energy optimization.
Pros
- 18,000 BTU cooling capacity covers up to 1,250 sq. ft.
- 19 SEER2 efficiency rating for reduced energy use
- Four fan speeds and 90-degree vertical swing
- Includes ECO mode for optimized temperature control
Cons
- No Wi-Fi connectivity mentioned in specifications
- Heating capacity (18,400 BTU) is slightly lower than cooling
- Unit weighs 112 pounds, making it heavy to handle
Good fit if
- You need 18,000 BTU cooling for a large room
- You have a 208-230V electrical circuit available
- You want basic manual controls without smart features
Skip if
- You require Wi-Fi app control for remote management
- Your space is smaller than 1,250 square feet
- You only have a standard 115V outlet
Verdict: Rellytech 18,000 BTU 19 SEER2 Mini Split provides strong cooling power for large rooms but lacks smart features. It suits buyers who prioritize raw capacity and efficiency over remote connectivity.
Specifications side by side
| Spec | TOSOT 9,000 BTU 230V Mini Split | Rellytech 18000 BTU 230V Mini Split |
|---|---|---|
| Cooling Capacity | 9,000 BTU | 18,000 BTU |
| Efficiency Rating | 20.5 SEER2 | 19 SEER2 |
| Voltage | 230V | 208-230V |
| Coverage Area | not stated | Up to 1,250 sq. ft. |
| Heat Pump | Heating System | Heat Pump |
| Smart Connectivity | Wifi, Alexa, GREE+ app | not stated |
| Smart Control | Wi-Fi, Alexa | not stated |
| Dimensions | 14.7 × 23.2 × 31.1 inches | 9.02 × 40.4 × 12.6 inches |
| Weight | not stated | 112 pounds |
| Size | WiFi - 9,000 BTU 230V (20.5 SEER2) | 18000BTU,230V,19 SEER2 |
| Color | White | White |
| Model | SU-COSMO9-230 | CE0-1 |
Frequently asked questions
Does the TOSOT mini split have Wi-Fi control?
Yes, the TOSOT 9,000 BTU unit includes built-in Wi-Fi connectivity. You can control it via a smartphone app or voice commands through Alexa. This allows you to adjust settings remotely without needing to be in the room. The Rellytech model does not list smart features in its specifications.
Which mini split is more energy efficient?
The TOSOT 9,000 BTU model is more efficient with a 20.5 SEER2 rating. The Rellytech 18,000 BTU unit has a 19 SEER2 rating. Higher SEER2 values indicate better energy efficiency for cooling. Both units use inverter technology to maintain temperature while saving power compared to non-inverter systems.
What is the voltage requirement for these units?
Both the TOSOT and Rellytech mini splits require a 230V power supply. This is standard for many ductless mini split installations. You will need a dedicated circuit breaker compatible with 230V to power either unit safely. Neither unit operates on standard 110V household outlets.
How large is the indoor unit for the TOSOT?
The TOSOT indoor unit measures 23.2 inches in width, 31.1 inches in height, and 14.7 inches in length. It is designed for smaller rooms up to 300 square feet. The compact size allows it to fit on walls in tighter spaces compared to larger capacity models.
Does the Rellytech mini split come with a remote?
The provided data does not specify if the Rellytech unit includes a remote control. It lists the model as CE0-1 with 18,000 BTU capacity. You should check the manufacturer's packaging details to confirm if a remote is included with this specific model.
Can I use voice control with the Rellytech unit?
The Rellytech 18,000 BTU model does not list Wi-Fi or Alexa compatibility in its specifications. It focuses on raw cooling power and efficiency rather than smart connectivity. You will likely need to use a physical remote or wall controller to adjust settings directly.
Which unit is heavier?
The Rellytech 18,000 BTU unit weighs 112 pounds. The TOSOT 9,000 BTU unit weight is not listed in the provided data. Generally, higher capacity units with larger compressors tend to be heavier. The Rellytech model is substantial due to its higher cooling output.
Is the TOSOT unit suitable for a 300 square foot room?
Yes, the TOSOT 9,000 BTU mini split is best for small rooms under 300 square feet. Its 9,000 BTU output is adequate for that space size. It offers quiet operation and smart features, making it a practical choice for smaller living areas or bedrooms.