Kenmore 12,000/11,000 BTU Mini-Compact Air Conditioner/Heater - Quick and Quiet Operation The 12000/11,000 BTU Window-Mounted Mini-Compat Air Conditioner/Heater quickly cools a room no hot days or warms a room on cold days. The quite operation keeps you comfortable without keeping you awake. This unit features electronic controls and top, full-width, 4-way air direction control. The antimicrobial mesh filter with side, slide-out access cleans the air removing harmful bacteria. Low power start-up conserves energy and saves you money plus, effortless restart automatically resumes operating at its previous settings when power is restored.