Best Energy Star 5-Star Rated Air Conditioners for the Home
Consumers seeking top-tier efficiency should consider air conditioners with Energy Star certification and high SEER ratings. This guide highlights five highly efficient options across central, ductless mini-split, and window units. Each product emphasizes energy savings, reliable performance in varying climates, and smart features that help keep homes comfortable while reducing energy use.
Summary of selected products:
| Product | Type | SEER2 | BTU | Energy Star |
|---|---|---|---|---|
| TOSOT 60,000 BTU Ducted Central Air Conditioner Heat Pump System (25 Ft) | Ducted Central Heat Pump | 18.5 | 60,000 | Yes |
| TOSOT 60,000 BTU Ducted Central Air Conditioner Heat Pump System (50 Ft) | Ducted Central Heat Pump | 18.5 | 60,000 | Yes |
| DELLA Serena Series 12,000 BTU Mini Split | Mini Split Ductless | 22 | 12,000 | Yes |
| Keystone Energy Star 12,000 BTU Window A/C | Window Unit | Unknown (Energy Star) | 12,000 | Yes |
| LG 14,000 BTU Dual Inverter Window A/C | Window Unit | Noted Inverter (Energy Star) | 14,000 | Yes |
TOSOT 60,000 BTU Ducted Central Heat Pump (25 Ft)
Features include UltraCool & UltraHeat Technology, enabling heating and cooling in extreme conditions from -22℉ to 130℉. The system uses a Self-Developed compressor with a triple-cylinder two-stage rotary design and enhanced vapor injection to optimize low-temperature heating and high-temperature cooling. Energy efficiency is highlighted with up to 18.5 SEER2 and 10.5 HSPF2, with inverter technology delivering up to 30% energy savings over non-inverter systems. It is Energy Star certified and eligible for federal tax credits.
TOSOT 60,000 BTU Ducted Central Heat Pump (25 Ft) — Originality Two-Stage
This model shares UltraCool & UltraHeat technology with robust climate resilience and a self-developed compressor. Its two-stage design works with enhanced vapor injection to optimize performance across temperatures. The system is touted for high efficiency, with SEER2 ratings around 18.5 and HSPF2 around 10.5, alongside inverter-driven energy savings. Energy Star certification supports federal tax credit eligibility, reinforcing long-term value for efficient homes.
DELLA Serena Series 12,000 BTU Mini Split
This pre-charged, inverter-driven mini split is designed for spaces up to 550 sq. ft. It offers a 22 SEER2 rating and 115V operation, providing energy-efficient cooling and heating with quiet performance (up to 23 dB in mute mode). Smart home compatibility includes Alexa and Google Home, plus a DELLA app for remote control. The unit emphasizes filtration and air quality enhancements through PureClean tech and features a robust heat pump design capable of efficient operation down to 5℉ (-15℃).
Keystone Energy Star 12,000 BTU Window A/C
This 12,000 BTU window unit provides cooling with 10,000 BTU supplemental heating and dehumidification for spaces up to 550 sq. ft. Inverter technology modulates power to match cooling or heating needs, improving energy efficiency and reducing noise. Supplemental heating is intended for moderate cold snaps rather than as a primary heat source. It operates quietly and aims to deliver reliable, energy-conscious comfort for medium to large rooms.
LG 14,000 BTU Dual Inverter Window A/C
The LG unit delivers strong cooling for large spaces with 14,000 BTU capacity and inverter-driven efficiency. It supports eco-friendly refrigerants and operates with low sound levels, aided by BLDC motor and DUAL Inverter Compressor design. The product is marketed as compatible with LG ThinQ and voice assistants, enabling smart control and energy-aware scheduling to optimize daily climate comfort without excessive energy use.
Buying Guide: Key Purchase Considerations
- System type: Choose from ducted central, ductless mini split, or window units depending on home layout, installation cost, and zoning needs. Ducted systems offer centralized comfort, while mini splits provide flexibility for individual rooms or zones.
- Energy efficiency: Look for Energy Star certification and high SEER2/HSPF ratings. Higher efficiency reduces operating costs and often qualifies for tax credits or rebates.
- Climate suitability: Consider operating temperature ranges. Heat pumps that function effectively at low temperatures offer better all-season comfort in colder regions.
- Noise and comfort: Inverter-driven models typically run quieter and modulate to maintain steady temperatures. Consider dB ratings for bedrooms or living spaces.
- Smart features: Voice control, apps, and geo-location features can improve energy management and convenience, especially in homes with multiple living areas.
- Installation and maintenance: Proper sizing and professional installation are essential. Pre-charged mini splits simplify DIY setups, but verify compatibility with existing electrical and refrigerant components.
- Durability and warranty: Check compressor warranty, outdoor unit protection, and service availability in your region to ensure long-term reliability.
These considerations help compare options across central, ductless, and window units. Energy Star certification, high SEER2 ratings, and inverter technology collectively indicate strong energy performance while maintaining comfort across varying climate conditions.