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This 19 SEER2 vs 18 SEER2 mini split air conditioner comparison helps you choose the right unit for your space. Both models are white ductless heat pumps that provide heating and cooling. They share inverter technology for efficient operation. The main difference lies in capacity and design. The Rellytech offers 18,000 BTU for larger areas. The Albott provides 12,000 BTU with a DIY-focused setup. You should pick based on your square footage and installation skills.
Cooling Capacity
18,000 BTU
12,000 BTU
Coverage Area
1,250 Sq. Ft.
750 sq. ft.
SEER2 Rating
19 SEER2
18 SEER2
Installation Style
Standard
Easy DIY with pre-wired indoor unit
Voltage
230V
220V
Choose the first if
- You need to cool a larger room up to 1,250 square feet.
- You want the highest energy efficiency rating available in this pair.
- You have a 230V electrical circuit ready for installation.
Choose the second if
- You are cooling a smaller space around 750 square feet.
- You prefer a unit with pre-wired components for simpler setup.
- You want a system that includes a 5-year compressor warranty.
Verdict
Choose the Rellytech if you need more power for a larger room and want the slight efficiency boost from the higher SEER2 rating. Pick the Albott if you are working with a smaller space and value the convenience of its pre-wired DIY design.
19 SEER2 vs 18 SEER2 Mini Split Comparison
SEER Rating
Edge: Rellytech 18000 BTU 230V Mini Split
The Rellytech unit offers a 19 SEER2 rating, while the Albott model provides an 18 SEER2 rating. SEER2 measures seasonal energy efficiency during cooling. A higher number indicates better efficiency and lower electricity use. The Rellytech system uses 19 SEER2 technology to optimize energy consumption. This means it converts more power into cool air with less waste. The Albott system relies on 18 SEER2 efficiency standards. While both are inverter-based for steady operation, the Rellytech edge is clear. You will see slightly lower energy bills with the higher rated unit over time.
Coverage Area
Edge: Rellytech 18000 BTU 230V Mini Split
Coverage area determines which room sizes each unit can handle effectively. The Rellytech 18,000 BTU model covers up to 1,250 square feet. This makes it suitable for larger living spaces, offices, or open floor plans. The Albott 12,000 BTU unit covers up to 750 square feet. This capacity is ideal for smaller bedrooms, dens, or compact offices. If you need to cool a large room, the Rellytech is the better choice. For smaller spaces, the Albott provides sufficient cooling without overworking the system. Match the square footage to your room size for optimal performance.
Operating Modes
Edge: Tie
Both units provide heating and cooling for year-round comfort. The Rellytech system includes four distinct modes: cooling, heating, fan, and dry. It also features a Smart Eco function that optimizes energy use automatically. The Albott unit offers cooling, heating, dehumidifying, and fan modes. It includes a sleep mode and a 24-hour timer for convenience. The Albott system allows temperature adjustments from 61°F to 90°F. While both handle basic climate control, the Rellytech dry mode adds versatility for humid conditions. The Albott timer offers scheduling precision. Both are practical for daily use.
Voltage Compatibility
Edge: Tie
Voltage requirements affect installation needs and electrical compatibility. The Rellytech 18,000 BTU model operates on 230V power. This standard voltage is common in many homes for high-capacity units. The Albott 12,000 BTU DIY Series model also operates on 220V. Both units require a dedicated circuit for safe operation. The voltage difference is negligible for most standard household electrical systems. You do not need special wiring for either unit compared to the other. Both fit standard residential electrical setups. Check your home’s panel capacity before installation for both models.
Physical Dimensions
Edge: Albott DIY 12k BTU 220V Mini Split
Indoor unit size impacts where you can mount the system. The Rellytech indoor unit measures 39.6 inches wide, 9.5 inches high, and 12.4 inches long. The Albott indoor unit is smaller, measuring 32.1 inches wide, 11.2 inches high, and 7.6 inches long. The Rellytech unit is wider but thinner vertically. The Albott unit is more compact in width and depth. Consider your wall space and mounting location when choosing. The Albott fits better in tighter spaces. The Rellytech requires more horizontal wall area. Both are white for neutral styling.
Installation Features
Edge: Albott DIY 12k BTU 220V Mini Split
Installation complexity varies between the two models. The Albott unit features an Easy DIY Series design with pre-wired indoor components. This reduces on-site wiring time and simplifies setup. The outdoor unit requires no vacuuming, streamlining the process. The Rellytech unit is described as a pre-charged split system. It does not highlight pre-wired indoor components or no-vacuum benefits in the provided data. The Albott design targets users seeking easier setup. Professional help is still recommended for those without basic skills. If you value simplified installation steps, the Albott offers a practical advantage.
Which Mini Split Fits Your Needs
You need strong cooling for large rooms
Our pick: Rellytech 18000 BTU 230V Mini Split
The Rellytech unit delivers 18,000 BTU of cooling power. This capacity covers up to 1,250 square feet. It also provides 18,400 BTU of heating. The 19 SEER2 rating ensures efficient energy use. You get four fan speeds and a 90-degree vertical swing. This model suits bedrooms, offices, or garages that require rapid airflow.
You want a simpler installation process
Our pick: Albott DIY 12k BTU 220V Mini Split
The Albott DIY Series features pre-wired indoor components. This design saves time and reduces on-site wiring work. The outdoor unit requires no vacuuming during setup. While it offers 12,000 BTU for spaces up to 750 square feet, the streamlined setup is ideal for those without advanced technical skills. It simplifies the entire installation procedure significantly.
You prioritize long-term warranty coverage
Our pick: Albott DIY 12k BTU 220V Mini Split
The Albott model includes a five-year compressor warranty. It also provides a seven-year parts warranty. These terms offer protection for your investment. The unit features self-cleaning functions and removable filters for easy maintenance. With an 18 SEER2 rating and inverter technology, you gain reliable year-round comfort. The extended warranty period adds significant value for long-term ownership.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Rellytech 18000 BTU 230V Mini Split | large rooms needing strong 18k BTU cooling | |
| 2 | Albott DIY 12k BTU 220V Mini Split | medium rooms needing easy installation |
Rellytech 18000 BTU 230V Mini Split
Best for: large rooms needing strong 18k BTU cooling
- SEER Rating
- 19 SEER2
- Cooling Capacity
- 18,000 BTU
- Coverage Area
- up to 1,250 sq. ft.
- SEER2 Rating
- 19
- Voltage
- 208-230V
- Operating Modes
- cooling, heating, fan, dry, ECO
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 230V power with a 19 SEER2 rating and an HSPF2 of 8.5. The unit includes four fan speeds and a 90-degree vertical swing. It features cooling, heating, fan, and dry modes. The ECO mode helps optimize energy use. This system is designed for efficient year-round temperature control in various rooms.
- High 19 SEER2 energy efficiency rating
- Strong 18,000 BTU cooling capacity
- Versatile 90-degree vertical airflow swing
- Four distinct operating modes for comfort
- Heavier at 112 pounds than the 12,000 BTU competitor
- Lower 19 SEER2 rating compared to the 22 SEER2 option
- Larger 39.6-inch width than the 12,000 BTU model
- You need strong cooling for a 1,250 sq. ft. area
- You want a 230V system for efficient heating
- You prefer adjustable vertical airflow coverage
- You require the highest possible SEER2 rating
- You need a lighter or more compact indoor unit
- You are cooling a space under 1,000 sq. ft.
Verdict: Rellytech 18000 BTU 19 SEER2 Mini Split suits you if you prioritize high cooling power and solid efficiency for larger rooms over the absolute highest SEER2 rating or smallest footprint.
Albott DIY 12k BTU 220V Mini Split
Best for: medium rooms needing easy installation
- 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 offers 12,000 BTU cooling and heating with an 18 SEER2 efficiency rating. It targets rooms up to 750 sq. ft. and operates on 220V power. The unit includes pre-wired indoor components to simplify installation. You get adjustable temperatures from 61°F to 90°F and a wide operating range of 5°F to 122°F. It is designed for users seeking reliable year-round comfort in medium-sized spaces.
- 18 SEER2 energy efficiency rating
- 12,000 BTU capacity for medium rooms
- Pre-wired indoor unit for easier setup
- Wide operating temperature range of 5°F to 122°F
- Self-cleaning function and removable filters
- Lower 18 SEER2 efficiency compared to the 19 SEER2 option on this list
- Smaller 12,000 BTU capacity compared to the 18,000 BTU competitor
- Heavier 151-pound build compared to lighter units
- You need a 12,000 BTU unit for a room up to 750 sq. ft.
- You prefer a 220V system for dedicated circuits
- You want pre-wired components to simplify installation
- You require the highest 19 SEER2 efficiency available
- You need more than 12,000 BTU for larger spaces
- You prefer a lighter unit under 150 pounds
Verdict: Albott DIY 12,000 BTU Mini Split suits buyers who prioritize ease of installation and reliable performance in medium-sized rooms over maximum efficiency or raw cooling power.
Specifications side by side
| Spec | Rellytech 18000 BTU 230V Mini Split | Albott DIY 12k BTU 220V Mini Split |
|---|---|---|
| Cooling Capacity | 18,000 BTU | 12,000 BTU |
| Coverage Area | up to 1,250 sq. ft. | Up to 750 sq ft |
| SEER2 Rating | 19 | 18 SEER2 |
| Voltage | 208-230V | 220V |
| Operating Modes | cooling, heating, fan, dry, ECO | Cooling, heating, dehumidifying, fan |
| Features | Inverter | – |
| Color | White | White |
| Operating Mode | – | Heater |
| SEER Rating | 19 SEER2 | 18 SEER2 |
| Dimensions | 9.02 × 40.4 × 12.6 inches | 7.6 × 32.1 × 11.2 inches |
| Weight | 112 pounds | 151 pounds |
| Size | 18000BTU,230V,19 SEER2 | DIY Series-12,000 BTU 220V |
| Model | CE0-1 | SAC012 |
Frequently asked questions
Is 19 SEER2 significantly better than 18 SEER2?
Yes, a higher SEER2 rating indicates better seasonal energy efficiency. The Rellytech unit achieves 19 SEER2, while the Albott model offers 18 SEER2. This means the Rellytech model uses less electricity to produce the same cooling output over a season. You will see lower energy consumption with the higher rating.
Which mini split is better for large rooms?
The Rellytech 18,000 BTU model is better for large spaces. It covers up to 1,250 square feet and delivers strong cooling power. The Albott 12,000 BTU unit is designed for medium rooms. If you need to cool a larger area, the higher capacity of the Rellytech unit is the practical choice.
Do these units provide heating as well as cooling?
Yes, both models function as ductless heat pumps. They include operating modes for both heating and cooling. The Rellytech unit provides 18,400 BTU of heating power. The Albott model also supports heating operations. You get year-round climate control from either system.
What is the difference in physical size between the two?
The Rellytech indoor unit is larger, measuring 39.6 inches wide. The Albott unit is more compact at 32.1 inches wide. Both are white, but the Rellytech model is taller and deeper. Choose the Albott if you have limited wall space for the indoor air handler.
Do both systems use inverter technology?
Yes, both the Rellytech and Albott models utilize inverter technology. This feature allows the compressor to adjust its speed based on the room temperature. Inverter systems maintain consistent temperatures while saving energy. You benefit from smoother operation and reduced power spikes with either choice.
Which model requires a 230V electrical connection?
The Rellytech 18,000 BTU unit requires a 230V connection. The Albott 12,000 BTU model operates on 220V. These voltages are standard for mini split systems. Ensure your home has the correct electrical outlet available before installation. Both units are designed for standard residential power supplies.
Is the Rellytech unit heavier than the Albott?
Yes, the Rellytech unit weighs 112 pounds. The Albott model weighs 151 pounds. The Albott is significantly heavier, likely due to its packaging or internal components. Consider this weight difference if you plan to move the units or if your mounting surface has weight limits.