This is no ordinary PTAC. The E-TAC is GREE's most efficient PTAC model. Unlike most PTAC's, the E-TAC's smart technology keeps utility costs down, while providing unmatched quiet comfort. Internally, a bi-fan motor configuration allows for the whisper quiet sound levels while achieving the highest level of efficiency. This 15,000 BTU GREE E-TAC heat pump unit is specifically designed to meet the rigorous demands of hospitality, healthcare & many specialty residential installations. This unit is capable of providing cooling and heating for rooms up to 700 sq feet. With an energy efficiency rating of 9. 8 EER, this unit is also your energy efficient choice. Features include a dry mode, & pre-programmed setpoint limits the E-TAC Series is the ideal choice for superior performance & energy savings. Please note : This system will retrofit into most competitive wall sleeves without a kit. However, new installations will require a Wall Sleeve (Recommended : SLEEVE-INSUL-1PK) and a Grille. FIVE Years Parts and Labor Coverage on the Sealed Refrigeration System. FIVE Years Limited Parts Coverage on Functional Parts. TWO Years Labor Coverage on Functional Parts Condensate Removal GREE's ETAC has a new condensate (water) disposal system. The outdoor fan prop has a built-in slinger ring which draws condensate and sprays it on the warm outdoor coil for evaporation. This provides a better disposal of excess condensate and improves the unit's operating efficiency. Note : This unit will not always evaporate 100% of the unit-generated condensate and blown-in rain water. if it's necessary to control 100% of the condensate, then a Drain Kit can be added. Easy-Access Filters The two-piece removable filters easily slide in and out from the front of the unit, and the front panel does not need to be removed to access or change the filters. The filters are 100% washable and can be used for the lifetime of the unit.