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Gridless vs HAXXAIR heat pumps

Measured against models of the same size and duct type, HAXXAIR scores higher on 4 of the 6 ratings. Gridless has 15 outdoor models, HAXXAIR has 15 outdoor models. Gridless and HAXXAIR have no QMID on file and are not ranked. They share hardware: 10 equipment families appear under both names.

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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.
Gridless and HAXXAIR 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, HAXXAIR scores higher on 4 of the 6 ratings.
  • Gridless
  • HAXXAIR
  • Other ranked manufacturers
GridlessHAXXAIR

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingGridlessHAXXAIR
Efficiency index70%median —71%median —
COP at 5°F64% (higher)median 2.0955% (higher)median 2.09
Capacity retention at 5°F73%median 88%78%median 97%
HSPF262%median 9.569%median 10.0
SEER273%median 22.078%median 22.0
EER273%median 12.373%median 12.9
Heating capacity at 5°F66%median 18,000 Btu/h70%median 19,800 Btu/h
Outdoor models1515
AHRI certifications2823

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardGridlessHAXXAIR
CEE 2025 Tier 1 (Split ASHP)100%15 models100%15 models
CEE 2026 Tier 1 (Split ASHP)100%15 models100%15 models
CEE Advanced Tier (Split ASHP)13.3%2 models13.3%2 models
Xcel Energy Colorado cold-climate ASHP (2025)100%15 models100%15 models
DOE Cold Climate Heat Pump Challenge13.3%2 models13.3%2 models
ENERGY STAR Cold Climate100%15 models100%15 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
  • Gridless
  • HAXXAIR
  • All models of the group
Ducted, up to 1.5 tons1.901,783 modelsDucted, 2 tons2.001,090 modelsDucted, 2.5–3 tons2.001,909 modelsDucted, 3.5–4.5 tons2.002,224 modelsDucted, 5 tons and up2.00321 modelsNon-ducted, up to 1.5 tons1.953,455 modelsNon-ducted, 2 tons2.00863 modelsNon-ducted, 2.5–3 tons2.001,106 modelsNon-ducted, 3.5–4.5 tons2.00564 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 typeGridlessHAXXAIR
Ducted, 2 tons1 · index 47%1 · index 80%
Ducted, 2.5–3 tons1 · index 65%3 · index 71%
Ducted, 3.5–4.5 tons1 · index 82%2 · index 71%
Ducted, 5 tons and up1 · index 81%1 · index 81%
Ducted, up to 1.5 tonsNone1 · index 65%
Non-ducted, up to 1.5 tons7 · index 77%7 · index 79%
Non-ducted, 2 tons1 · index 61%1 · index 58%
Non-ducted, 2.5–3 tons2 · index 63%2 · index 63%
Non-ducted, 3.5–4.5 tons1 · index 44%1 · index 44%

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 typeGridlessCold-climate score, best modelHAXXAIRCold-climate score, best model
Ducted, up to 1.5 tonsNo models in this size class66.2(50 is the typical model of its size class)HVHMZ-18V2D1 of 1 models qualify · AHRI 216707866
Ducted, 2 tons82.1(50 is the typical model of its size class)GRID24OCwith ducted air handler GRID24VAH1 of 1 models qualify · AHRI 21711526782.1(50 is the typical model of its size class)HVHDZ-24V2Dwith ducted air handler HAHDZ-24V2D1 of 1 models qualify · AHRI 216014850
Ducted, 2.5–3 tons87.9(50 is the typical model of its size class)GRID36OCwith ducted air handler GRID36VAH1 of 1 models qualify · AHRI 21711526887.9(50 is the typical model of its size class)HVHDZ-36V2Dwith ducted air handler HAHDZ-36V2D3 of 3 models qualify · AHRI 216014851
Ducted, 3.5–4.5 tons77.3(50 is the typical model of its size class)GRID48OCwith ducted air handler GRID48VAH1 of 1 models qualify · AHRI 21711526977.3(50 is the typical model of its size class)HVHDZ-48V2Dwith ducted air handler HAHDZ-48V2D2 of 2 models qualify · AHRI 216014852
Ducted, 5 tons and up88.7(50 is the typical model of its size class)GRID60OCwith ducted air handler GRID60VAH1 of 1 models qualify · AHRI 21711527088.7(50 is the typical model of its size class)HVHDZ-60V2Dwith ducted air handler HAHDZ-60V2D1 of 1 models qualify · AHRI 216014853
Non-ducted, up to 1.5 tons89.7(50 is the typical model of its size class)GRID09OHHVwith ductless indoor unit GRID09WHHV7 of 7 models qualify · AHRI 21710197389.7(50 is the typical model of its size class)HVHZ-09A2Uwith ductless indoor unit HAHZ-09A2U7 of 7 models qualify · AHRI 217731091
Non-ducted, 2 tons54.1(50 is the typical model of its size class) (higher)GRID24OHVwith ductless indoor unit GRID24WHV1 of 1 models qualify · AHRI 21710197848.1(50 is the typical model of its size class)HVHZ-24V2Dwith ductless indoor unit HAHZ-24V2D1 of 1 models qualify · AHRI 215887342
Non-ducted, 2.5–3 tons53.7(50 is the typical model of its size class)GRID36OM42 of 2 models qualify · AHRI 21712326453.7(50 is the typical model of its size class)HVHMZ-36V2D2 of 2 models qualify · AHRI 216707875
Non-ducted, 3.5–4.5 tons16.4(50 is the typical model of its size class)GRID48OM51 of 1 models qualify · AHRI 21712326516.4(50 is the typical model of its size class)HVHMZ-42V2D1 of 1 models qualify · AHRI 216707872

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 typeGridlessAll-around score, best modelHAXXAIRAll-around score, best model
Ducted, up to 1.5 tonsNo models in this size class64.6(50 is the typical model of its size class)HVHMZ-18V2D1 of 1 models have all five ratings · AHRI 216707866
Ducted, 2 tons79.5(50 is the typical model of its size class)GRID24OCwith ducted air handler GRID24VAH1 of 1 models have all five ratings · AHRI 21711526779.5(50 is the typical model of its size class)HVHDZ-24V2Dwith ducted air handler HAHDZ-24V2D1 of 1 models have all five ratings · AHRI 216014850
Ducted, 2.5–3 tons82.3(50 is the typical model of its size class)GRID36OCwith ducted air handler GRID36VAH1 of 1 models have all five ratings · AHRI 21711526882.3(50 is the typical model of its size class)HVHDZ-36V2Dwith ducted air handler HAHDZ-36V2D3 of 3 models have all five ratings · AHRI 216014851
Ducted, 3.5–4.5 tons82.3(50 is the typical model of its size class)GRID48OCwith ducted air handler GRID48VAH1 of 1 models have all five ratings · AHRI 21711526982.3(50 is the typical model of its size class)HVHDZ-48V2Dwith ducted air handler HAHDZ-48V2D2 of 2 models have all five ratings · AHRI 216014852
Ducted, 5 tons and up81.1(50 is the typical model of its size class)GRID60OCwith ducted air handler GRID60VAH1 of 1 models have all five ratings · AHRI 21711527081.1(50 is the typical model of its size class)HVHDZ-60V2Dwith ducted air handler HAHDZ-60V2D1 of 1 models have all five ratings · AHRI 216014853
Non-ducted, up to 1.5 tons94.5(50 is the typical model of its size class)GRID09OHHVwith ductless indoor unit GRID09WHHV7 of 7 models have all five ratings · AHRI 21710197394.5(50 is the typical model of its size class)HVHZ-09A2Uwith ductless indoor unit HAHZ-09A2U7 of 7 models have all five ratings · AHRI 217731091
Non-ducted, 2 tons61.3(50 is the typical model of its size class) (higher)GRID24OHVwith ductless indoor unit GRID24WHV1 of 1 models have all five ratings · AHRI 21710197858.3(50 is the typical model of its size class)HVHZ-24V2Dwith ductless indoor unit HAHZ-24V2D1 of 1 models have all five ratings · AHRI 215887342
Non-ducted, 2.5–3 tons64.2(50 is the typical model of its size class)GRID24OM32 of 2 models have all five ratings · AHRI 21712326364.2(50 is the typical model of its size class)HVHMZ-27V2D2 of 2 models have all five ratings · AHRI 216707868
Non-ducted, 3.5–4.5 tons43.7(50 is the typical model of its size class)GRID48OM51 of 1 models have all five ratings · AHRI 21712326543.7(50 is the typical model of its size class)HVHMZ-42V2D1 of 1 models have all five ratings · AHRI 216707872

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
RatingGridlessHAXXAIR
COP at 5°Fbeats 98% · 2.42GRID60OCDucted, 5 tons and upbeats 98% · 2.42HVHDZ-60V2DDucted, 5 tons and up
Capacity retention at 5°Fbeats 94% · 75%GRID60OCDucted, 5 tons and upbeats 94% · 75%HVHDZ-60V2DDucted, 5 tons and up
HSPF2beats 96% · 10.5GRID36OCDucted, 2.5–3 tonsbeats 96% · 10.5HVHDZ-36V2DDucted, 2.5–3 tons
SEER2beats 99% · 32.0GRID09OHHVNon-ducted, up to 1.5 tonsbeats 99% · 32.0HVHZ-09A2UNon-ducted, up to 1.5 tons
EER2beats 100% · 18.4GRID09OHHVNon-ducted, up to 1.5 tonsbeats 100% · 18.4HVHZ-09A2UNon-ducted, up to 1.5 tons
Heating capacity at 5°Fbeats 93% · 18,000 Btu/hGRID18OHVNon-ducted, up to 1.5 tonsbeats 93% · 18,000 Btu/hHVHZ-18V2DNon-ducted, up to 1.5 tons

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