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DIYCOOL vs LG heat pumps

Measured against models of the same size and duct type, LG scores higher on 6 of the 6 ratings. DIYCOOL has 75 outdoor models, LG has 78 outdoor models. DIYCOOL has no QMID on file and is not ranked.

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CompareData as of updated · sources

Against comparable models

Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.
DIYCOOL and LG on every ratingPeer scores, 0–100 · grey ticks: every ranked manufacturer · shaded: the middle half of each one’s modelsMeasured against models of the same size and duct type, LG scores higher on 6 of the 6 ratings.
  • DIYCOOL
  • LG
  • Other ranked manufacturers
DIYCOOLLG

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingDIYCOOLLG
Efficiency index54%median —65%median — · 2nd ranked
COP at 5°F42%median 1.9059%median 2.06 · 7th ranked
Capacity retention at 5°F62%median 78%64%median 80% · 5th ranked
HSPF262%median 9.470%median 9.5 · 3rd ranked
SEER259%median 18.963%median 20.2 · 6th ranked
EER243%median 11.069%median 12.5 · 1st ranked
Heating capacity at 5°F62%median 22,530 Btu/h67%median 19,900 Btu/h · 3rd ranked
Outdoor models7578
AHRI certifications170175

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardDIYCOOLLG
CEE 2025 Tier 1 (Split ASHP)65.3%49 models74.4%58 models
CEE 2026 Tier 1 (Split ASHP)60%45 models74.4%58 models
CEE Advanced Tier (Split ASHP)1.3%1 models9%7 models
Xcel Energy Colorado cold-climate ASHP (2025)54.7%41 models67.9%53 models
DOE Cold Climate Heat Pump Challenge1.3%1 models9%7 models
ENERGY STAR Cold Climate45.3%34 models44.9%35 models

Sizes and duct types offered

Models in each peer group, with the efficiency index of those models against the rest of the group.
Side by side, inside each size and duct typeShape: every model of the group · bars: each manufacturer’s middle half, median dot, 10th–90th line · 8 groups where both have models
  • DIYCOOL
  • LG
  • All models of the group
Ducted, up to 1.5 tons2.00884 modelsDucted, 2 tons2.00821 modelsDucted, 2.5–3 tons1.901,614 modelsDucted, 3.5–4.5 tons1.911,492 modelsDucted, 5 tons and up1.90239 modelsNon-ducted, up to 1.5 tons1.902,417 modelsNon-ducted, 2 tons1.87611 modelsNon-ducted, 2.5–3 tons1.85975 modelsNon-ducted, 3.5–4.5 tons1.97438 modelsNon-ducted, 5 tons and up2.1032 modelsmedian

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of

Models per peer group · efficiency index within the group
Size and duct typeDIYCOOLLG
Ducted, up to 1.5 tons9 · index 57%11 · index 57%
Ducted, 2 tons8 · index 58%7 · index 71%
Ducted, 2.5–3 tons14 · index 52%9 · index 80%
Ducted, 3.5–4.5 tons16 · index 56%15 · index 79%
Ducted, 5 tons and upNone3 · index 72%
Non-ducted, up to 1.5 tons21 · index 55%35 · index 54%
Non-ducted, 2 tons6 · index 51%10 · index 61%
Non-ducted, 2.5–3 tons15 · index 51%10 · index 69%
Non-ducted, 3.5–4.5 tons8 · index 47%11 · index 70%
Non-ducted, 5 tons and upNone3 · index 55%

Cold-climate and all-around picks, size class by size class

Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.

Cold-climate picks

Best cold-climate pick per size and duct type (keeps at least 70% of its heat at 5°F). Qualifies when its capacity retention at 5°F (capacity at 5°F as a share of capacity at 47°F) is at least 70% and Capacity retention at 5°F, COP at 5°F, HSPF2 are all rated. Score = the equal-weight mean of its peer percentiles on Capacity retention at 5°F, COP at 5°F, HSPF2 (share of the other models in its peer group it beats, 0–100), all from one certified pairing: in each duct type a model is sold in, its qualifying pairing of that type with the best score; equal scores (one decimal) go to the higher heating capacity at 5°F.
Size and duct typeDIYCOOLCold-climate score, best modelLGCold-climate score, best model
Ducted, up to 1.5 tons86.9(50 is the typical model of its size class) (higher)ACIQ-18-HPBwith ducted air handler ACIQ-18W-WM8 of 9 models qualify · AHRI 21343326778.7(50 is the typical model of its size class)LUU090HVwith ducted air handler LHN098HV18 of 11 models qualify · AHRI 212578846
Ducted, 2 tons79.4(50 is the typical model of its size class)ACIQ-24ZPL-HP230Bwith ducted air handler ACIQ-24CD-HH-MB7 of 7 models qualify · AHRI 20782556092.9(50 is the typical model of its size class) (higher)ARUN024GSS45 of 7 models qualify · AHRI 10070563
Ducted, 2.5–3 tons79.9(50 is the typical model of its size class)ACIQ-36ZPL-HP230Bwith ducted air handler ACIQ-36CD-HH-MB10 of 15 models qualify · AHRI 21085734197.0(50 is the typical model of its size class) (higher)ARUN038GSS47 of 9 models qualify · AHRI 8717932
Ducted, 3.5–4.5 tons86.4(50 is the typical model of its size class)ACIQ-48ZPL-HP230Bwith ducted air handler ACIQ-48CD-HH-MB12 of 16 models qualify · AHRI 21085734286.4(50 is the typical model of its size class)LMU480HHV12 of 15 models qualify · AHRI 206717009
Ducted, 5 tons and upNo models in this size class81.7(50 is the typical model of its size class)LMU601HV2 of 3 models qualify · AHRI 206717003
Non-ducted, up to 1.5 tons89.3(50 is the typical model of its size class)ACIQ-06ZPL-HP230Bwith ductless indoor unit ACIQ-06W-HH-MC11 of 21 models qualify · AHRI 21085733495.4(50 is the typical model of its size class) (higher)LAU090HYV3with ductless indoor unit LAN090HYV322 of 35 models qualify · AHRI 204825177
Non-ducted, 2 tons85.4(50 is the typical model of its size class)ACIQ-24ZPL-HP230Bwith ductless indoor unit ACIQ-24FM-HH-MB3 of 6 models qualify · AHRI 20782556392.9(50 is the typical model of its size class) (higher)ARUN024GSS47 of 10 models qualify · AHRI 10070562
Non-ducted, 2.5–3 tons79.3(50 is the typical model of its size class)ACIQ-36Z-HH-M4B7 of 15 models qualify · AHRI 20782559492.2(50 is the typical model of its size class) (higher)ARUN038GSS47 of 10 models qualify · AHRI 8717931
Non-ducted, 3.5–4.5 tons76.8(50 is the typical model of its size class)ACIQ-60ZPL-HP230Bwith ductless indoor unit ACIQ-60FM-HH-MB5 of 8 models qualify · AHRI 21085734697.4(50 is the typical model of its size class) (higher)LMU421HHV8 of 11 models qualify · AHRI 206717001
Non-ducted, 5 tons and upNo models in this size class71.5(50 is the typical model of its size class)ARUB060GSS43 of 3 models qualify · AHRI 10271659

All-around best

Best all-around model per size and duct type. Score = 50% heating, the mean of its peer percentiles on COP at 5°F, Capacity retention at 5°F, HSPF2, plus 50% cooling, the mean of its peer percentiles on SEER2 and EER2 (share of the other models in its peer group it beats, 0–100). All five ratings are required; there is no minimum heat kept at 5°F. In each duct type a model is sold in, it is scored on its pairing of that type with the best score; equal scores (one decimal) go to the higher cold-climate score, then the higher heating capacity at 5°F.
Size and duct typeDIYCOOLAll-around score, best modelLGAll-around score, best model
Ducted, up to 1.5 tons85.2(50 is the typical model of its size class) (higher)ACIQ-09ZPL-HP230Bwith ducted air handler ACIQ-09CD-HH-MB9 of 9 models have all five ratings · AHRI 20782555764.8(50 is the typical model of its size class)LUU180HHVwith ducted air handler LVN181HV48 of 11 models have all five ratings · AHRI 205788774
Ducted, 2 tons80.1(50 is the typical model of its size class)ACIQ-24ZPL-HP230Bwith ducted air handler ACIQ-24CD-HH-MB8 of 8 models have all five ratings · AHRI 20782556086.9(50 is the typical model of its size class) (higher)ARUN024GSS46 of 7 models have all five ratings · AHRI 10070563
Ducted, 2.5–3 tons75.4(50 is the typical model of its size class)ES-27Z-M3B14 of 14 models have all five ratings · AHRI 21085740597.5(50 is the typical model of its size class) (higher)ARUN038GSS48 of 9 models have all five ratings · AHRI 8717932
Ducted, 3.5–4.5 tons82.0(50 is the typical model of its size class)ACIQ-48Z-HH-M5B15 of 15 models have all five ratings · AHRI 20782559889.8(50 is the typical model of its size class) (higher)LMU480HHV15 of 15 models have all five ratings · AHRI 206717009
Ducted, 5 tons and up41.7(50 is the typical model of its size class)ACIQ-60-EHPBwith ducted air handler ACIQ-60AHB1 of 1 models have all five ratings · AHRI 21343326178.9(50 is the typical model of its size class) (higher)LMU601HV2 of 3 models have all five ratings · AHRI 206717003
Non-ducted, up to 1.5 tons92.0(50 is the typical model of its size class)ACIQ-06ZPL-HP230Bwith ductless indoor unit ACIQ-06W-HH-MC21 of 21 models have all five ratings · AHRI 21085733495.3(50 is the typical model of its size class) (higher)LAU090HYV3with ductless indoor unit LAN090HYV331 of 35 models have all five ratings · AHRI 204825177
Non-ducted, 2 tons84.3(50 is the typical model of its size class)ACIQ-24ZPL-HP230Bwith ductless indoor unit ACIQ-24W-HH-MB6 of 6 models have all five ratings · AHRI 20782555388.3(50 is the typical model of its size class) (higher)LAU240HYV3with ductless indoor unit LAN240HYV39 of 10 models have all five ratings · AHRI 204825181
Non-ducted, 2.5–3 tons82.8(50 is the typical model of its size class)ACIQ-36Z-HH-M4B13 of 15 models have all five ratings · AHRI 20782559487.4(50 is the typical model of its size class) (higher)LMU361HHV10 of 10 models have all five ratings · AHRI 206717007
Non-ducted, 3.5–4.5 tons77.9(50 is the typical model of its size class)ACIQ-48Z-HH-M5B8 of 8 models have all five ratings · AHRI 20782559792.1(50 is the typical model of its size class) (higher)LMU421HHV11 of 11 models have all five ratings · AHRI 206717001
Non-ducted, 5 tons and upNo models in this size class61.0(50 is the typical model of its size class)LMU601HV3 of 3 models have all five ratings · AHRI 206717015

All-around board, every manufacturer

Standout model on each rating

Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.
Top model per rating by peer percentile, with its AHRI-certified value and peer group
RatingDIYCOOLLG
COP at 5°Fbeats 91% · 2.21ACIQ-24ZPL-HP230BNon-ducted, 2 tonsbeats 100% · 3.19ARUN038GSS4Non-ducted, 2.5–3 tons
Capacity retention at 5°Fbeats 99% · 144%SC-09ZPL-HP230Non-ducted, up to 1.5 tonsbeats 100% · 114%ARUM036GSS5Non-ducted, 2.5–3 tons
HSPF2beats 99% · 10.3ACIQ-48ZPL-HP230BDucted, 3.5–4.5 tonsbeats 99% · 9.5LMU601HVDucted, 5 tons and up
SEER2beats 99% · 24.6ES-27Z-M3BNon-ducted, 2.5–3 tonsbeats 99% · 18.5LMU601HVDucted, 5 tons and up
EER2beats 99% · 16.6SC-09ZPL-HP230Non-ducted, up to 1.5 tonsbeats 100% · 15.5ARUM036GSS5Non-ducted, 2.5–3 tons
Heating capacity at 5°Fbeats 99% · 56,500 Btu/hACIQ-60ZPL-HP230BNon-ducted, 3.5–4.5 tonsbeats 100% · 48,000 Btu/hARUM036GSS5Non-ducted, 2.5–3 tons

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