Durastar DRTHC102XNA1 10,000 BTU 9.6 CEER Through the Wall Indoor Unit (w/ Sleeve) - R32Durastar DRTHC102XNA1 & DRWTCSLV 10,000 BTU R 32 Through the Wall Heat Cool Air Conditioner with Wall Sleeve The Durastar DRTHC102XNA1 delivers dependable, all season comfort with 10,000 BTU cooling and 10,600 BTU electric heating, ideal for rooms between 400 and 450 sq ft. Paired with the included Durastar DRWTCSLV wall sleeve, this 208 230V through the wall unit saves floor space while providing efficient, quiet climate control. With a 9. 6 CEER