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Choosing between a 20 SEER2 vs 18 SEER2 mini split air conditioner comes down to efficiency and installation style. Both units offer 12,000 BTU capacity and cover up to 750 square feet. They both provide heating and cooling for year-round comfort. The main difference lies in their voltage requirements and control features. One model prioritizes smart connectivity, while the other focuses on simplified setup.
SEER Rating
20 SEER2
18 SEER2
Voltage
115V
220V
Control Method
Wi-Fi, App, Remote
Not listed
Installation
Standard kit
Easy DIY series
Warranty
8-year warranty
5-year compressor, 7-year parts
Choose the first if
- You need a 115V unit for standard outlets
- You want Wi-Fi and app control
- You prefer a higher SEER2 rating
Choose the second if
- You have a 220V circuit available
- You want an Easy DIY installation series
- You prefer a simpler setup process
Verdict
Choose the Rellytech if you need 115V power and smart app control. Pick the Albott if you have 220V wiring and want a DIY-friendly install. Both handle 750 square feet effectively.
20 SEER2 vs 18 SEER2 Mini Split Comparison
Energy efficiency
Edge: Rellytech 12000 BTU 20 SEER2 Mini Split
The Rellytech unit features a 20 SEER2 rating, while the Albott model is rated at 18 SEER2. This rating measures seasonal energy efficiency, indicating how effectively the system uses electricity to provide cooling and heating. A higher number means the unit consumes less power for the same amount of comfort. The Rellytech 20 SEER2 rating is 30% more energy-efficient than standard 17 SEER2 models. This difference suggests lower electricity bills for the Rellytech system over time. If your priority is minimizing energy consumption, the Rellytech option offers a clear advantage in operational efficiency.
Voltage compatibility
Edge: Tie
The Rellytech mini split operates on a 115V circuit, which is standard for most household outlets. The Albott DIY Series is designed for a 220V circuit. This is a critical distinction for your home’s electrical setup. If you already have a 220V outlet, the Albott unit fits directly. If you only have standard 115V outlets, the Rellytech unit is the compatible choice without needing new wiring. Always check your available power source before deciding. The Albott unit requires a 220V connection, while the Rellytech works with standard 115V power.
Smart control features
Edge: Rellytech 12000 BTU 20 SEER2 Mini Split
The Rellytech system includes built-in Wi-Fi capabilities, allowing you to control the unit from anywhere using a smartphone app or voice commands. You can set temperature schedules and monitor your home’s climate remotely. The product description also notes a remote with a digital display for direct operation. The Albott product data does not mention Wi-Fi or smart app integration. If you want to manage your comfort settings from your phone, the Rellytech unit provides this modern convenience. The Albott model relies on standard manual controls.
Installation style
Edge: Albott DIY 12k BTU 220V Mini Split
The Albott unit is part of an Easy DIY Series, featuring pre-wired indoor components to simplify setup and reduce on-site wiring time. It also requires no vacuuming of the outdoor unit, streamlining the process for those with basic skills. The Rellytech system ships as a complete kit but does not highlight pre-wired or no-vacuum features in its data. It must be installed by a licensed HVAC technician. If you prefer a setup designed for simplified handling, the Albott DIY Series offers specific features to ease installation.
Operating temperature range
Edge: Rellytech 12000 BTU 20 SEER2 Mini Split
Both units perform well in extreme conditions, but their minimum operating temperatures differ. The Rellytech system operates effectively from -13°F to 122°F. The Albott unit operates from 5°F to 122°F. The Rellytech model can provide heating in colder environments down to -13°F. The Albott model maintains performance down to 5°F. If you live in an area with freezing temperatures below 5°F, the Rellytech unit offers a wider heating range. Both units share the same maximum operating temperature of 122°F for cooling.
Refrigerant type
Edge: Rellytech 12000 BTU 20 SEER2 Mini Split
The Rellytech system uses R454B refrigerant, which is pre-charged and noted for better indoor and outdoor air quality. The Albott product data does not specify the refrigerant type used in its system. R454B is an environmentally friendly alternative to older refrigerants. Knowing the specific refrigerant helps with maintenance and environmental impact considerations. Since the data for the Albott unit does not list its refrigerant, we cannot compare this specific attribute directly. However, the Rellytech unit explicitly uses R454B for sustainable operation.
Which Mini Split Should You Buy
Efficiency focused users
Our pick: Rellytech 12000 BTU 20 SEER2 Mini Split
The Rellytech model offers a 20 SEER2 rating, making it 30% more energy-efficient than standard 17 SEER2 systems. This higher rating ensures optimal performance and lower electricity usage for cooling and heating. It operates effectively in temperatures ranging from -13°F to 122°F, providing consistent power even in extreme weather conditions.
DIY installation seekers
Our pick: Albott DIY 12k BTU 220V Mini Split
The Albott unit is designed for easier setup with pre-wired indoor components and no outdoor vacuuming required. This DIY-friendly design saves time during installation. It includes a self-cleaning function and removable filters for simple maintenance. The system operates between 5°F and 122°F, ensuring reliable comfort throughout the year.
Smart control enthusiasts
Our pick: Rellytech 12000 BTU 20 SEER2 Mini Split
Rellytech includes Wi-Fi connectivity for smartphone and voice control. You can set temperature schedules and adjust modes remotely. The unit features iFEEL mode, turbo mode, and sleep mode for precise climate management. A digital display on the remote provides direct access to settings, offering complete control over your indoor environment.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Rellytech 12000 BTU 20 SEER2 Mini Split | medium rooms needing efficient 115V cooling | |
| 2 | Albott DIY 12k BTU 220V Mini Split | DIY installation in rooms up to 750 sq. ft. |
Rellytech 12000 BTU 20 SEER2 Mini Split
Best for: medium rooms needing efficient 115V cooling
- SEER Rating
- 20 SEER2
- Cooling Capacity
- 12,000 BTU
- Coverage Area
- up to 750 sq ft
- SEER2 Rating
- 20
- Voltage
- 110V/115V
- Smart Compatibility
- Wi-Fi, voice commands, remote
This Rellytech mini split offers 12,000 BTU cooling and heating with a 20 SEER2 rating. It covers up to 750 sq ft using 115V power. The unit includes Wi-Fi control, a digital remote, and inverter technology. It operates in temperatures from -13°F to 122°F. This model suits you if you need efficient year-round climate control for a bedroom or living space.
- 20 SEER2 energy efficiency rating
- Covers up to 750 sq ft
- Wi-Fi and app control included
- Operates from -13°F to 122°F
- 115V voltage requires specific electrical setup
- 75.3 lb indoor unit is heavier than lighter alternatives
- Single 12,000 BTU capacity limits larger rooms
- You need a 115V unit for standard outlets
- You want high energy efficiency with 20 SEER2
- You require smart Wi-Fi control
- You need 230V power for higher capacity
- You have a room larger than 750 sq ft
- You prefer a lighter, more compact indoor unit
Verdict: Rellytech 12000 BTU 20 SEER2 Mini Split fits you if you need efficient 115V cooling for a medium-sized room with smart control features.
Albott DIY 12k BTU 220V Mini Split
Best for: DIY installation in rooms up to 750 sq. ft.
- SEER Rating
- 18 SEER2
- Cooling Capacity
- 12,000 BTU
- Coverage Area
- Up to 750 sq ft
- SEER2 Rating
- 18 SEER2
- Voltage
- 220V
- Operating Modes
- Cooling, heating, dehumidifying, fan
This Albott mini split delivers 12,000 BTU of cooling and heating for spaces up to 750 sq. ft. It carries an 18 SEER2 rating, which is slightly lower than the 20 SEER2 option on this list, but it compensates with a DIY-friendly design. The indoor unit is pre-wired, and the outdoor unit requires no vacuuming. It operates reliably in temperatures from 5°F to 122°F, making it a solid choice for year-round comfort in homes or small offices.
- 18 SEER2 efficiency rating for cost-effective operation
- Pre-wired indoor unit simplifies installation significantly
- Outdoor unit requires no vacuuming during setup
- Operates in extreme temperatures from 5°F to 122°F
- Includes 5-year compressor and 7-year parts warranty
- 18 SEER2 rating is lower than the 20 SEER2 competitor
- 151-pound weight makes the unit heavier than lighter models
- Limited to 12,000 BTU capacity for smaller rooms
- You want to simplify the installation process with pre-wired components
- You need reliable heating and cooling in very cold or hot climates
- You are outfitting a room up to 750 sq. ft.
- You require the highest possible efficiency rating of 20 SEER2
- You need to cool a space larger than 750 sq. ft.
- You prefer a lighter unit that is easier to handle alone
Verdict: Albott 12,000 BTU 18 SEER2 Mini Split suits DIYers who value easier installation over maximum efficiency. It provides dependable year-round comfort for medium-sized rooms without the complexity of vacuuming the outdoor unit.
Specifications side by side
| Spec | Rellytech 12000 BTU 20 SEER2 Mini Split | Albott DIY 12k BTU 220V Mini Split |
|---|---|---|
| Cooling Capacity | 12,000 BTU | 12,000 BTU |
| Coverage Area | up to 750 sq ft | Up to 750 sq ft |
| SEER2 Rating | 20 | 18 SEER2 |
| Voltage | 110V/115V | 220V |
| Smart Compatibility | Wi-Fi, voice commands, remote | – |
| Operating Modes | cooling, heat pump, dry, fan-only, eco | Cooling, heating, dehumidifying, fan |
| Features | Inverter, Quiet Operation | – |
| Control Method | Wi-Fi, Wi-Fi App Control, Wi-Fi App | – |
| Color | White | White |
| Operating Mode | Heater | Heater |
| SEER Rating | 20 SEER2 | 18 SEER2 |
| Dimensions | 8.66 × 31.9 × 11.4 inches | 7.6 × 32.1 × 11.2 inches |
| Weight | 75.3 pounds | 151 pounds |
| Size | 12000BTU,115V,20 SEER2-WiFi | DIY Series-12,000 BTU 220V |
| Model | CE0-1 | SAC012 |
Frequently asked questions
Is a 20 SEER2 mini split worth the upgrade over 18 SEER2?
Yes, if you prioritize long-term energy savings. The Rellytech 20 SEER2 unit uses electricity more efficiently than the Albott 18 SEER2 model. Higher SEER2 ratings mean lower operating costs over time. You get better seasonal efficiency for the same 12,000 BTU cooling capacity.
What is the difference between 115V and 220V mini splits?
Voltage determines your installation requirements. The Rellytech 20 SEER2 model runs on 115V, fitting standard household outlets. The Albott 18 SEER2 DIY unit requires 220V. You must check your home’s electrical panel to match the correct voltage for safe and proper operation of either system.
Can I install a 20 SEER2 mini split myself?
The Rellytech 20 SEER2 unit includes Wi-Fi app control for easy setup. However, it requires professional electrical connection for 115V power. The Albott 18 SEER2 is marketed as a DIY series, suggesting easier installation. You should verify if the 20 SEER2 model supports similar self-installation.
Do 20 SEER2 and 18 SEER2 units cover the same area?
Yes, both units cover up to 750 square feet. They both provide 12,000 BTU of cooling power. The coverage area remains identical despite the difference in energy efficiency ratings. You can use either model for medium-sized rooms with similar space requirements.
Does a higher SEER2 rating affect heating performance?
Both units provide heating modes for year-round comfort. The Rellytech 20 SEER2 and Albott 18 SEER2 both operate as heaters. While SEER2 measures cooling efficiency, both systems are designed to handle seasonal temperature changes. You get reliable heating regardless of the specific SEER2 rating chosen.
Which mini split is quieter, 20 SEER2 or 18 SEER2?
The Rellytech 20 SEER2 model explicitly lists quiet operation as a feature. The Albott 18 SEER2 data does not specify noise levels. If low noise is a priority, the Rellytech unit provides a clearer specification for your needs. You may need to check manufacturer details for the Albott model.
Do I need Wi-Fi for a 20 SEER2 mini split?
The Rellytech 20 SEER2 unit includes Wi-Fi and app control features. This allows you to manage settings remotely. The Albott 18 SEER2 data does not mention smart connectivity options. If remote control is important to you, the 20 SEER2 model offers this capability out of the box.