When choosing a single-zone mini split system, the TOSOT Cosmo and TOSOT Aoraki stand out as two excellent options. Both deliver year-round comfort, energy efficiency, and smart features, but each serves a slightly different type of buyer. This guide compares the two models side by side to help you decide which one is the better fit for your home.
Quick Summary
The TOSOT Cosmo ductless air conditioner is an affordable, dependable unit with strong efficiency, Wi-Fi control, and reliable performance in all weather conditions.
The TOSOT Aoraki ductless air conditioner is a premium choice, offering higher AC efficiency, quieter operation, and compatibility with an optional ERV system that brings in fresh outdoor air.
Comparison Chart: Cosmo vs. Aoraki
*Chart uses the 24,000 BTU model for both Cosmo and Aoraki. Refer to the respective product pages for specific ratings of other BTU options.
| Feature | TOSOT Cosmo (24,000 BTU) | TOSOT Aoraki (24,000 BTU) |
|---|---|---|
| BTU Options | 9k, 12k, 18k, 24k, 30k, 36k | 12k, 18k, 24k |
| SEER2 Efficiency Rating | 19 | 24 |
| HSPF2 Rating | 8.5 | 9.0 |
| Energy Star Certified? | No | Yes |
| Temperature Range | Operates from –13 °F to 122 °F | Operates from –22 °F to 122 °F |
| Noise Levels | Indoor noise: 35–45 dB | Indoor noise: 30–48 dB |
| Air Quality / ERV | Standard airflow and dehumidification | ERV-compatible for continuous fresh air ventilation |
| Control & Connectivity | Wi-Fi control with the Gree+ app, Alexa, or Google Home | Wi-Fi control with the Gree+ app, Alexa, or Google Home |
| Refrigerant | Eco-friendly R32 | Eco-friendly R32 |
| Warranty | 5 years | 5 years |
| Price (Base Model) | ~$1,399.99 | ~$1,899.99 without ERV, ~$1,999.99 with ERV |
Energy Performance and Savings
The Cosmo split AC unit provides reliable efficiency with a 19 SEER2 rating, saving up to 32 percent compared to older 13 SEER2 systems. It strikes a good balance between affordability and energy savings.
The Aoraki split AC unit reaches an outstanding 24 SEER2, placing it among the most efficient mini splits available. Its Energy Star certification means it qualifies for tax rebates and utility incentives, which can offset the higher purchase price over time.
Weather Performance
Both systems deliver dependable comfort in extreme conditions. The Cosmo operates in temperatures as low as –13 °F, which works well for most climates. The Aoraki extends that range to –22 °F, offering an advantage in colder regions while both handle summer highs up to 122 °F.
The Aoraki can also operate in cooling mode in low winter ambient conditions down to 5°F, if cooling is necessary in spaces like server rooms, sunrooms & hydroponic labs that can overheat even during the depths of winter.
Quiet Comfort and Smart Features
The Cosmo runs at 35–45 decibels indoors, similar to a quiet conversation. The Aoraki lowers noise to just 30 decibels on its lowest setting, making it ideal for bedrooms or offices where silence matters most.
Both systems include Wi-Fi connectivity and pair with the Gree+ app for remote operation. Both models are compatible with Alexa and Google Assistant, with the Aoraki extending this capability to the optional ERV accessory.
Indoor Air Quality
The Aoraki has a clear edge when it comes to air quality. With ERV compatibility, it can bring fresh outdoor air inside while maintaining efficiency, even when not heating or cooling. This helps reduce stuffiness and supports healthier indoor environments. The ERV system can precondition incoming fresh air by recycling energy from exhausted air for higher cooling and heating efficiency.
The Cosmo focuses on conditioned airflow and dehumidification but does not support ERV integration.
Pricing and Value
For budget-conscious buyers, the Cosmo is the lower-cost option, priced at approximately $1,399.99. The Aoraki starts at $1,899.99 without ERV and $1,999.99 with it included. While the Aoraki requires a larger upfront investment, its superior efficiency, rebate eligibility, and air quality features make it a strong long-term value.
Final Take
The TOSOT Cosmo is the right choice for buyers who want dependable comfort, good efficiency, and smart control at an accessible price. The TOSOT Aoraki is the better option for those who want the highest efficiency, ultra-quiet operation, and the ability to improve indoor air quality with an ERV system.
Whichever model you choose, you can feel confident knowing that TOSOT mini split systems are built for comfort, efficiency, and long-lasting reliability.
Need product suggestions for size or models, you can either refer to the following blogs or contact our technical service via support@tosotdirect.com
