The Yukon series is the most efficient mini-split heat-pump in the world. Rated at an un-matched 38SEER and 15HSPF by the AHRI, the Opus series is a very quiet, wifi ready, 2 stage inverter driven mini-split using R410A refrigerant engineered to provide heat below -22F. The subtle indoor unit panel will blend in any type of room. This system is also available for light commercial applications as the 24,000BTU system can give more than 30,000BTUs worth of cooling and heating. If you are looking for the best heat-pump on the market, the Yukon series was created for you. The Yukon series qualifies for rebates with every utility company in North America.