LG heat pumps

65 ENERGY STAR certified LG outdoor units (56 mini-split, 9 central). The most efficient is the KUSAL091A at 27.0 SEER2 and 13.5 HSPF2; 50 models are rated for cold climates.

ENERGY STAR data, updated October 12, 2026

65 models, ranked by SEER2 (cooling efficiency), then HSPF2.

#		Type						Cold
1	LG KUSAL091AKUSAL091A	Mini-split	9,000 BTU	27.0	15.8	13.5	12,000	Yes	1
2	LG KUSAL121AKUSAL121A	Mini-split	12,000 BTU	25.5	13.8	11.2	14,700	Yes	1
3	LG KUSAL151AKUSAL151A	Mini-split	15,000 BTU	25.0	15.0	11.2	18,000	Yes	1
4	LG KUSXA301AKUSXA301A	Central	2.5-ton	25.0	15.2	10.4	34,000	Yes	8
5	LG KUSAL181AKUSAL181A	Mini-split	18,000 BTU	24.0	14.4	11.0	21,600	Yes	1
6	LG KUSAB091AKUSAB091A	Mini-split	9,000 BTU	23.8	15.0	10.9	9,500	Yes	2
7	LG KUSXA361AKUSXA361A	Central	3-ton	23.5	13.7	10.5	36,000	Yes	9
8	LG ZRUM048GSS0ZRUM048GSS0	Mini-split	48,000 BTU	23.3	13.5	10.3	54,000	Yes	3
9	LG ZRUM036GSS0ZRUM036GSS0	Mini-split	36,000 BTU	23.0	15.5	10.6	42,000	Yes	3
10	LG KUSAL241AKUSAL241A	Mini-split	24,000 BTU	23.0	13.0	10.2	21,600	Yes	1
11	LG KUSAB181AKUSAB181A	Mini-split	18,000 BTU	23.0	13.0	10.0	15,200	Yes	2
12	LG ZRUM060GSS0ZRUM060GSS0	Mini-split	60,000 BTU	23.0	13.0	10.0	54,000	Yes	3
13	LG KUSAB121AKUSAB121A	Mini-split	12,000 BTU	22.5	12.8	10.5	10,000	Yes	2
14	LG KUMXB181AKUMXB181A	Mini-split	18,000 BTU	22.5	13.5	9.8	15,800	No	3
15	LG KUMXB241AKUMXB241A	Mini-split	24,000 BTU	22.5	12.5	9.8	17,300	No	3
16	LG KUSXB091AKUSXB091A	Mini-split	9,000 BTU	22.2	13.9	10.6	10,500	Yes	4
17	LG KUMXA361AKUMXA361A	Mini-split	36,000 BTU	22.0	14.5	11.0	41,500	Yes	3
18	LG KUSXA241AKUSXA241A	Mini-split	24,000 BTU	22.0	13.0	10.5	28,000	Yes	6
19	LG KUSXB361AKUSXB361A	Central	3-ton	22.0	13.0	10.3	35,000	Yes	9
20	LG KUSAP241AKUSAP241A	Mini-split	24,000 BTU	22.0	13.0	9.7	20,000	Yes	1
21	LG KUMXB301AKUMXB301A	Mini-split	30,000 BTU	22.0	13.0	9.5	18,400	No	3
22	LG KUSXB121AKUSXB121A	Mini-split	12,000 BTU	21.7	12.2	10.5	11,400	Yes	6
23	LG KUMXA421AKUMXA421A	Mini-split	42,000 BTU	21.5	13.8	11.0	44,000	Yes	3
24	LG KUSXA421AKUSXA421A	Mini-split	42,000 BTU	21.5	13.5	10.8	43,500	Yes	2
25	LG KUMXB361AKUMXB361A	Mini-split	30,000 BTU	21.5	12.5	9.5	19,400	No	3
26	LG KUSXB481AKUSXB481A	Central	4-ton	21.2	12.1	10.4	40,000	Yes	8
27	LG KUSXB421AKUSXB421A	Mini-split	42,000 BTU	21.0	13.2	10.8	40,000	Yes	6
28	LG KUSXB241AKUSXB241A	Central	2-ton	21.0	13.0	10.2	24,000	Yes	7
29	LG KUSXB301AKUSXB301A	Mini-split	24,000 BTU	21.0	12.1	10.0	32,000	Yes	6
30	LG KUMXA241AKUMXA241A	Mini-split	24,000 BTU	21.0	13.5	9.8	22,000	Yes	3
31	LG KUSAC181AKUSAC181A	Mini-split	18,000 BTU	21.0	12.5	9.4	13,300	Yes	1
32	LG KUSAC091AKUSAC091A	Mini-split	9,000 BTU	21.0	12.5	9.2	7,700	Yes	1
33	LG KUSAD091AKUSAD091A	Mini-split	9,000 BTU	21.0	12.5	9.2	7,700	Yes	1
34	LG KUSXA481AKUSXA481A	Mini-split	48,000 BTU	20.8	12.7	10.6	44,500	Yes	2
35	LG KUMXB541AKUMXB541A	Mini-split	48,000 BTU	20.6	12.6	9.5	41,000	No	3
36	LG KUMXA481AKUMXA481A	Mini-split	48,000 BTU	20.5	13.1	10.5	48,000	Yes	3
37	LG KUMXB601AKUMXB601A	Mini-split	60,000 BTU	20.5	12.0	10.0	46,000	No	3
38	LG KUSXA181AKUSXA181A	Mini-split	18,000 BTU	20.5	13.2	10.0	24,000	Yes	10
39	LG KUSXB181AKUSXB181A	Central	1.5-ton	20.5	13.0	10.0	22,000	Yes	9
40	LG KUMXB481AKUMXB481A	Mini-split	48,000 BTU	20.5	12.8	9.5	37,800	No	3
41	LG ZRUN024GSS0ZRUN024GSS0	Mini-split	24,000 BTU	20.1	14.8	10.2	27,000	Yes	3
42	LG KUMXA181AKUMXA181A	Mini-split	18,000 BTU	20.0	13.5	9.8	19,800	Yes	3
43	LG KUMXA301AKUMXA301A	Mini-split	24,000 BTU	20.0	12.5	9.8	23,000	Yes	3
44	LG KUSAC121AKUSAC121A	Mini-split	12,000 BTU	20.0	12.3	9.0	8,400	Yes	1
45	LG KUSAD121AKUSAD121A	Mini-split	12,000 BTU	20.0	12.3	9.0	8,400	Yes	1
46	LG KUSAC241AKUSAC241A	Mini-split	24,000 BTU	20.0	12.3	8.8	13,800	No	1
47	LG KUSXA422AKUSXA422A	Central	3.5-ton	19.0	12.5	9.8	46,000	Yes	4
48	LG KUSXA482AKUSXA482A	Central	4-ton	19.0	12.3	9.6	46,000	Yes	6
49	LG KUSUB421AKUSUB421A	Mini-split	42,000 BTU	18.5	11.0	9.5	36,800	Yes	1
50	LG KUSUB481AKUSUB481A	Mini-split	48,000 BTU	18.5	11.0	9.0	37,400	Yes	1
51	LG KUSUB601AKUSUB601A	Mini-split	48,000 BTU	18.5	11.0	9.0	38,500	Yes	1
52	LG KUSUB121AKUSUB121A	Mini-split	12,000 BTU	18.0	12.0	9.5	10,500	Yes	1
53	LG KUSUB301AKUSUB301A	Mini-split	24,000 BTU	18.0	11.0	9.5	24,000	Yes	1
54	LG KUSUB361AKUSUB361A	Mini-split	30,000 BTU	18.0	11.0	9.5	33,000	Yes	1
55	LG KUSUB181AKUSUB181A	Mini-split	18,000 BTU	18.0	11.0	9.0	18,000	Yes	1
56	LG KUSUB241AKUSUB241A	Mini-split	24,000 BTU	18.0	11.0	9.0	21,000	Yes	1
57	LG KUSAE181AKUSAE181A	Mini-split	18,000 BTU	18.0	12.0	8.9	13,300	No	1
58	LG KUSAE091AKUSAE091A	Mini-split	9,000 BTU	18.0	12.0	8.7	7,700	No	1
59	LG KUSAE121AKUSAE121A	Mini-split	12,000 BTU	18.0	12.0	8.5	8,400	No	1
60	LG KUSAE241AKUSAE241A	Mini-split	24,000 BTU	18.0	12.0	8.3	13,800	No	1
61	LG KUSAF091FKUSAF091F	Mini-split	9,000 BTU	18.0	11.5	8.0	7,700	No	1
62	LG KUSAF121FKUSAF121F	Mini-split	12,000 BTU	18.0	11.0	8.0	8,400	No	1
63	LG KUSAF241FKUSAF241F	Mini-split	24,000 BTU	18.0	11.0	8.0	15,500	No	1
64	LG KUSXB601AKUSXB601A	Central	4-ton	17.5	12.0	9.4	45,000	Yes	7
65	LG KUSXA121AKUSXA121A	Mini-split	12,000 BTU	17.0	13.3	9.8	15,000	Yes	2