Green Flow Solution logo
Schedule Service

Mass Save AHRI details

Lennox MMLD012S6S-1P

ENERGY STAR Certified · Mass Save Eligible HP - Mini or Multi Split
Virtual Consultation

Mass Save rebate eligible

Mass Save® rebates for this qualified system

Green Flow Solution can help confirm the equipment match, project eligibility, utility requirements, and rebate paperwork before installation or replacement.

Claim your rebates today
Mass Save Heat Pump Leader logo

Brand and components

Indoor, outdoor, and system model details

Outdoor unit brandLennox
Outdoor unit modelMMLD012S6S-1P
Indoor unit brandLENNOX
Indoor unit modelsMMDD012S6-1P
Model nameSlim Duct (LSP) Premium (CAC)
Model numberMMLD012S6S-1P

Related product models

Indoor unit model MMDD012S6-1P Lennox model match
MMDD012S6-1P product image Lennox MMDD012S6-1P Indoor unit
Outdoor unit model MMLD012S6S-1P Lennox model match
MMLD012S6S-1P product image Lennox MMLD012S6S-1P Air-source heat pump

Performance specs

Capacity and efficiency

Cooling Capacity (BTUH)
12000
Heating Capacity 47F (BTUH)
14000
Heating Capacity 17F (BTUH)
8800
Heating Capacity 5F (BTUH)
11200
Seer2
19.60
HSPF2 Region IV
9.50
EER2 AFull 95F
11.80
COP at 5F
1.80
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

Similar systems to compare

Scroll horizontally or use the arrow keys to explore.

Higher SEER2

Trane

Mini / multi-split heat pump

4TXK3812A10NU** — Trane AHRI 9150123

AHRI 9150123

Indoor model / pattern
4MXW3812A10NU**
Cooling · BTU/h
12,000
SEER2
24.00
HSPF2
8.50

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Lower HSPF2 (Region IV): 8.50 vs. 9.50
  • Different refrigerant: R-410A (current: R-32).
  • Lower heating capacity at 47°F: 12,200 BTU/h.
View AHRI
Higher SEER2

Trane

Mini / multi-split heat pump

4TXK2512A10N0** — Trane AHRI 207629149

AHRI 207629149

Indoor model / pattern
4MXW2512A10N0**
Cooling · BTU/h
12,000
SEER2
25.00
HSPF2
9.00

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Lower HSPF2 (Region IV): 9.00 vs. 9.50
  • Different refrigerant: R-410A (current: R-32).
  • Lower heating capacity at 47°F: 12,000 BTU/h.
  • Lower heating capacity at 5°F: 9,200 BTU/h.
View AHRI
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. 19.60
  • Different refrigerant: R-410A (current: R-32).
  • Lower heating capacity at 47°F: 12,000 BTU/h.
View AHRI
Higher SEER2

Carrier

Mini / multi-split heat pump

37MAHAQ12AA3 — Carrier AHRI 215323807

AHRI 215323807

Indoor model / pattern
45MBDAQ12XA3
Cooling · BTU/h
12,000
SEER2
20.00
HSPF2
10.20

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Higher SEER2: 20.00 vs. 19.60
  • Different refrigerant: R-454B (current: R-32).
  • Lower heating capacity at 47°F: 12,500 BTU/h.
View AHRI
Same outdoor unit

Lennox

Mini / multi-split heat pump

MMLD012S6S-1P — Lennox AHRI 216581321

AHRI 216581321

Indoor model / pattern
M1WD012S6-1P
Cooling · BTU/h
12,000
SEER2
21.00
HSPF2
9.50

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySame outdoor unit, different indoor combination.Higher SEER2: 21.00 vs. 19.60
View AHRI
Same brand

Lennox

Mini / multi-split heat pump

MLB012S4S-1P — Lennox AHRI 207683532

AHRI 207683532

Indoor model / pattern
M22A012S4-2P
Cooling · BTU/h
12,000
SEER2
22.30
HSPF2
10.20

Cooling capacity (listed) · HSPF2 Region IV

Same cooling capacitySimilar cooling capacity.Higher SEER2: 22.30 vs. 19.60
  • 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

Showing services from our catalog

Brands We Service

Popular cities

Service Areas