CONFORTOTAL vs DIAMONDAIR heat pumps

Measured against models of the same size and duct type, DIAMONDAIR scores higher on 5 of the 6 ratings. CONFORTOTAL has 4 outdoor models, DIAMONDAIR has 25 outdoor models. CONFORTOTAL and DIAMONDAIR have no QMID on file and are not ranked.

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CompareData as of Oct 11, 2026updated Oct 11, 2026 · 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.

CONFORTOTAL and DIAMONDAIR 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, DIAMONDAIR scores higher on 5 of the 6 ratings.

CONFORTOTAL
DIAMONDAIR
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 11, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	CONFORTOTAL	DIAMONDAIR
Efficiency index	28%median —	42%median —
COP at 5°F	19%median 1.80	30%median 1.82
Capacity retention at 5°F	21%median 63%	34%median 62%
HSPF2	21%median 8.5	42%median 7.5
SEER2	36%median 19.5	38%median 14.3
EER2	36%median 10.5	53%median 11.4
Heating capacity at 5°F	48% (higher)median 14,400 Btu/h	37% (higher)median 13,800 Btu/h
Outdoor models	4	25
AHRI certifications	4	74

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	CONFORTOTAL	DIAMONDAIR
CEE 2025 Tier 1 (Split ASHP)	75%3 models	36%9 models
CEE 2026 Tier 1 (Split ASHP)	50%2 models	28%7 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	0%0 models	24%6 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	0%0 models	0%0 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 · 2 groups where both have models

CONFORTOTAL
DIAMONDAIR
All models of the group

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

Source: AHRI Directory · as of Oct 11, 2026

Models per peer group · efficiency index within the group
Size and duct type	CONFORTOTAL	DIAMONDAIR
Ducted, up to 1.5 tons	None	2 · index 59%
Ducted, 2 tons	None	2 · index 12%
Ducted, 2.5–3 tons	None	6 · index 40%
Ducted, 3.5–4.5 tons	None	6 · index 31%
Ducted, 5 tons and up	None	1 · index 19%
Non-ducted, up to 1.5 tons	2 · index 27%	7 · index 47%
Non-ducted, 2.5–3 tons	2 · index 29%	2 · index 60%
Non-ducted, 2 tons	None	2 · index 40%
Non-ducted, 3.5–4.5 tons	None	1 · index 40%

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 type	CONFORTOTALCold-climate score, best model	DIAMONDAIRCold-climate score, best model
Ducted, up to 1.5 tons	No models in this size class	52.0(50 is the typical model of its size class)DF18M2Z21 of 2 models qualify · AHRI 210857278
Ducted, 2 tons	No models in this size class	None on this board (0 of 2 models qualify)
Ducted, 2.5–3 tons	No models in this size class	57.4(50 is the typical model of its size class)DF30M2Z31 of 6 models qualify · AHRI 210857281
Ducted, 3.5–4.5 tons	No models in this size class	None on this board (0 of 6 models qualify)
Ducted, 5 tons and up	No models in this size class	None on this board (0 of 1 models qualify)
Non-ducted, up to 1.5 tons	None on this board (0 of 2 models qualify)	74.8(50 is the typical model of its size class)D2009SHO2with ductless indoor unit DF2009HMSI23 of 7 models qualify · AHRI 210857265
Non-ducted, 2 tons	No models in this size class	86.1(50 is the typical model of its size class)D2024SHO2with ductless indoor unit DF2024CI21 of 2 models qualify · AHRI 210857272
Non-ducted, 2.5–3 tons	None on this board (0 of 2 models qualify)	49.3(50 is the typical model of its size class)DF30M2Z31 of 2 models qualify · AHRI 210857280
Non-ducted, 3.5–4.5 tons	No models in this size class	None on this board (0 of 1 models qualify)

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 type	CONFORTOTALAll-around score, best model	DIAMONDAIRAll-around score, best model
Ducted, up to 1.5 tons	No models in this size class	59.4(50 is the typical model of its size class)DF18M2Z21 of 2 models have all five ratings · AHRI 210857278
Ducted, 2 tons	No models in this size class	12.4(50 is the typical model of its size class)D1424HPG21 of 2 models have all five ratings · AHRI 212586117
Ducted, 2.5–3 tons	No models in this size class	71.5(50 is the typical model of its size class)DF30M2Z34 of 6 models have all five ratings · AHRI 210857281
Ducted, 3.5–4.5 tons	No models in this size class	52.1(50 is the typical model of its size class)DF55M2Z53 of 6 models have all five ratings · AHRI 210857287
Ducted, 5 tons and up	No models in this size class	19.3(50 is the typical model of its size class)D1460HPL21 of 1 models have all five ratings · AHRI 212586122
Non-ducted, up to 1.5 tons	27.2(50 is the typical model of its size class)CICON182-MAlso listed as CICON242-M2 of 2 models have all five ratings · AHRI 213296000	84.4(50 is the typical model of its size class) (higher)D2009SHO2with ductless indoor unit DF2009HMSI27 of 7 models have all five ratings · AHRI 210857265
Non-ducted, 2 tons	No models in this size class	70.7(50 is the typical model of its size class)D2024SHO2with ductless indoor unit DF2024HMSI22 of 2 models have all five ratings · AHRI 210857268
Non-ducted, 2.5–3 tons	29.5(50 is the typical model of its size class)CICON362-M2 of 2 models have all five ratings · AHRI 213296003	66.7(50 is the typical model of its size class) (higher)DF30M2Z32 of 2 models have all five ratings · AHRI 210857280
Non-ducted, 3.5–4.5 tons	No models in this size class	40.4(50 is the typical model of its size class)DF55M2Z51 of 1 models have all five ratings · AHRI 210857286

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
Rating	CONFORTOTAL	DIAMONDAIR
COP at 5°F	beats 22% · 1.80CICON182-MAlso listed as CICON242-MNon-ducted, up to 1.5 tons	beats 78% · 2.10D1612HMSOFNon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 22% · 65%CICON182-MAlso listed as CICON242-MNon-ducted, up to 1.5 tons	beats 92% · 103%D2024SHO2Non-ducted, 2 tons
HSPF2	beats 25% · 8.5CICON272-MNon-ducted, 2.5–3 tons	beats 97% · 11.5D2024SHO2Non-ducted, 2 tons
SEER2	beats 35% · 19.0CICON272-MNon-ducted, 2.5–3 tons	beats 98% · 21.0DF30M2Z3Ducted, 2.5–3 tons
EER2	beats 39% · 10.0CICON272-MNon-ducted, 2.5–3 tons	beats 95% · 15.8D2009SHO2Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 78% · 13,000 Btu/hCICON182-MAlso listed as CICON242-MNon-ducted, up to 1.5 tons	beats 90% · 17,200 Btu/hD2018SHO2Non-ducted, up to 1.5 tons

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