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Mass Save AHRI details

LG KUSXB121A

ENERGY STAR Certified · Mass Save Eligible HP - Mini or Multi Split
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Brand and components

Indoor, outdoor, and system model details

Outdoor unit brandLG
Outdoor unit modelKUSXB121A
Indoor unit brandLG
Indoor unit modelsKNSLB121A
Model nameKUSXB121A
Model numberKUSXB121A

Related product models

Indoor unit model KNSLB121A LG model match
KNSLB121A product image LG KNSLB121A Indoor unit
Outdoor unit model KUSXB121A LG model match
KUSXB121A product image LG KUSXB121A Air-source heat pump

Performance specs

Capacity and efficiency

Cooling Capacity (BTUH)
12000
Heating Capacity 47F (BTUH)
15000
Heating Capacity 17F (BTUH)
9500
Heating Capacity 5F (BTUH)
10500
Seer2
17.00
HSPF2 Region IV
9.50
EER2 AFull 95F
12.20
COP at 5F
1.85
Refrigerant Type
R-32

Eligibility

Rebates and certifications

Mass Save QPL
Yes
ENERGY STAR Certified
Yes
ENERGY STAR Cold Climate Certified
Yes

Explore your options

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Higher SEER2

Carrier

Mini / multi-split heat pump

38MARBQ12AA3 — Carrier AHRI 211132925

AHRI 211132925

Indoor model / pattern
40MBDAQ12XH3
Cooling · BTU/h
12,000
SEER2
20.00
HSPF2
9.50

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Higher SEER2: 20.00 vs. 17.00
  • Different refrigerant: R-410A (current: R-32).
  • Lower heating capacity at 47°F: 12,000 BTU/h.
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37MAHAQ12AA3 — Carrier AHRI 215323807

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Indoor model / pattern
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Cooling · BTU/h
12,000
SEER2
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HSPF2
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Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Higher SEER2: 20.00 vs. 17.00
  • Different refrigerant: R-454B (current: R-32).
  • Lower heating capacity at 47°F: 12,500 BTU/h.
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Higher SEER2

Bosch

Mini / multi-split heat pump

BMS500-AAS012-1CSXHD — Bosch AHRI 215223285

AHRI 215223285

Indoor model / pattern
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Cooling · BTU/h
12,000
SEER2
20.00
HSPF2
10.00

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Higher SEER2: 20.00 vs. 17.00
  • Different refrigerant: R-454B (current: R-32).
  • Lower heating capacity at 47°F: 12,500 BTU/h.
View AHRI
Higher SEER2

Bosch

Mini / multi-split heat pump

BMS500-AAS012-1CSXHC — Bosch AHRI 207760003

AHRI 207760003

Indoor model / pattern
BMS500-AAU012-1AHDXB
Cooling · BTU/h
12,000
SEER2
19.50
HSPF2
10.00

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Higher SEER2: 19.50 vs. 17.00
  • Different refrigerant: R-410A (current: R-32).
  • Lower heating capacity at 47°F: 12,500 BTU/h.
View AHRI
Higher SEER2

Fujitsu

Mini / multi-split heat pump

AOUH12LMAS1 — Fujitsu AHRI 207615689

AHRI 207615689

Indoor model / pattern
ASUH12LMAS
Cooling · BTU/h
12,000
SEER2
23.00
HSPF2
11.10

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Higher SEER2: 23.00 vs. 17.00
  • Different refrigerant: R-410A (current: R-32).
  • Lower heating capacity at 47°F: 12,000 BTU/h.
  • Lower heating capacity at 17°F: 8,800 BTU/h.
View AHRI
Higher SEER2

Fujitsu

Mini / multi-split heat pump

AOUH12LMAH1 — Fujitsu AHRI 206263450

AHRI 206263450

Indoor model / pattern
ASUH12LMAS
Cooling · BTU/h
12,000
SEER2
23.00
HSPF2
11.20

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Higher SEER2: 23.00 vs. 17.00
  • Different refrigerant: R-410A (current: R-32).
  • Lower heating capacity at 47°F: 12,000 BTU/h.
View AHRI

Side by side

See the differences

Your current system and up to two alternatives. Scroll the table to see every system.

Comparison does not confirm installation compatibility, availability, or current incentive eligibility. Unknown and qualified source values are not treated as zero.

Our Services

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AHRI Certificate Matching Support service
ResidentialCommercialSupport

AHRI Certificate Matching Support

Match supported indoor and outdoor equipment combinations to AHRI certification records for planning and documentation.

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Heat Pump Sizing and Selection service
ResidentialCommercialConsultation

Heat Pump Sizing and Selection

Plan supported heat-pump equipment and capacity using building conditions, climate, distribution, and backup-heat needs.

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HVAC Load Calculation and Equipment Sizing service
ResidentialCommercialConsultation

HVAC Load Calculation and Equipment Sizing

Evaluate building loads and system requirements to support correctly sized HVAC replacement or conversion planning.

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Mass Save Equipment Eligibility Verification service
ResidentialSupport

Mass Save Equipment Eligibility Verification

Review equipment, AHRI data, and current program requirements before a rebate application or proposal is finalized.

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Mass Save Rebate and AHRI Support service
ResidentialCommercialSupport

Mass Save Rebate and AHRI Support

Verify matched equipment details and prepare source information for rebate planning.

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Electrical Load Calculation for HVAC Upgrades service
ResidentialCommercialConsultation

Electrical Load Calculation for HVAC Upgrades

Review available electrical capacity and upgrade requirements for planned heat-pump, AC, or HVAC equipment.

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