Air Tempo heat pump efficiency: 6 outdoor models compared

Air Tempo has 6 heat pump outdoor models certified with this refrigerant group, in 6 AHRI-certified combinations. Each model is compared with models of the same size and duct type, so the scores below do not depend on which sizes Air Tempo makes. Air Tempo has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

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ManufacturerData as of Oct 9, 2026updated Oct 10, 2026 · sources

Outdoor models: 6
AHRI certifications: 6
Efficiency index: 64%; Typical model vs same-size, same-type peers (6 models)
Meet CEE 2025: 100%; 6 models

How Air Tempo compares with comparable models

For each rating: the share of same-size, same-type models that a typical model of this manufacturer beats (50% is typical), its rank, and the raw median for context. Raw medians are not comparable across manufacturers that make different sizes.

Air Tempo against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of Air Tempo’s own modelsAir Tempo is strongest on capacity retention at 5°F (its typical model beats 86% of comparable models) and weakest on COP at 5°F (18%).

Air Tempo
Middle half of its models
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile of Air Tempo’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index6 models scored	64%	Not ranked	—
COP at 5°F6 models scored	18%	Not ranked	1.80
Capacity retention at 5°F6 models scored	86%	Not ranked	99%
HSPF26 models scored	72%	Not ranked	10.0
SEER26 models scored	78%	Not ranked	23.5
EER26 models scored	60%	Not ranked	12.5
Heating capacity at 5°F6 models scored	81%	Not ranked	17,800 Btu/h

Standards met

Share of Air Tempo’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	100%	6
CEE 2026 Tier 1 (Split ASHP)	100%	6
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	100%	6
DOE Cold Climate Heat Pump Challenge	0%	0
ENERGY STAR Cold Climate	100%	6

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.

Air Tempo’s models inside each size and duct typeShape: every model of the group · blue: the middle half of this manufacturer’s models there, median dot, 10th–90th percentile line

Air Tempo (median, middle 50%, 10th–90th)
All models of the group

Source: AHRI Directory · as of Oct 9, 2026

Share of comparable models beaten, per peer group
Size and duct type	Models	Index	COP@5°F	HSPF2	SEER2
Non-ducted, up to 1.5 tons	4	68%	19%	73%	82%
Non-ducted, 2 tons	2	56%	17%	70%	70%

Every Air Tempo model in the market

Air Tempo’s 6 models with a known size and duct type, over the shape of the whole catalog.

Air Tempo models by size and ratingColoured: Air Tempo · grey shapes: all 14,508 models · lines: catalog medians by size

Air Tempo models
Ducted median by size
Non-ducted median by size
Every model at each size (width = count)
Standard threshold

Dots: 6 air tempo models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 14,508 models, half a ton at a time.

Show the data as a table

COP at 5°F by size and duct type (every model, by rated cooling capacity)
Duct type, size	Models	10th pct.	25th	Median	75th	90th
Ducted, 0.5 tons	826	1.64	1.71	1.75	1.85	2.24
Ducted, 1 ton	407	1.80	1.90	2.05	2.41	2.45
Ducted, 1.5 tons	992	1.75	1.86	2.00	2.17	2.40
Ducted, 2 tons	999	1.75	1.86	2.00	2.18	2.30
Ducted, 2.5 tons	1,040	1.70	1.80	2.00	2.10	2.36
Ducted, 3 tons	696	1.80	1.90	2.00	2.10	2.42
Ducted, 3.5 tons	864	1.70	1.80	2.00	2.10	2.46
Ducted, 4 tons	727	1.80	1.86	2.00	2.12	2.40
Ducted, 4.5 tons	690	1.70	1.80	1.90	2.10	2.20
Ducted, 5 tons	86	1.89	2.00	2.10	2.10	2.10
Non-ducted, 0.5 tons	1,186	1.75	1.80	1.90	2.00	2.22
Non-ducted, 1 ton	1,343	1.80	1.80	1.99	2.10	2.21
Non-ducted, 1.5 tons	1,261	1.80	1.80	2.00	2.10	2.31
Non-ducted, 2 tons	761	1.80	1.98	2.00	2.10	2.30
Non-ducted, 2.5 tons	403	1.80	1.85	2.00	2.00	2.10
Non-ducted, 3 tons	473	1.90	1.98	2.00	2.03	2.20
Non-ducted, 3.5 tons	280	2.00	2.00	2.00	2.05	2.10
Non-ducted, 4 tons	204	1.96	2.00	2.05	2.10	2.11
Non-ducted, 4.5 tons	78	1.90	1.91	1.95	2.01	2.01
Non-ducted, 5 tons	84	1.99	2.00	2.05	2.20	2.20

Source: AHRI Directory · as of Oct 9, 2026

Top Air Tempo models

Its top five cold-climate picks and its top five all-around models across sizes (both scores compare each model with models of its own size and duct type, so sizes compare), then, on each single rating, the model that beats the largest share of comparable models.

Cold-climate picks

Top 3 Air Tempo cold-climate picks across sizes. 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.
# · Outdoor model	Size · type	Cap. 5/47	COP@5°F	HSPF2	Btu/h @5°F	SEER2	Meets	Combos	AHRI ref.	Compared with	Score
1ATCB12K454B-OAir Tempo · Builder Serieswith ductless indoor unit ATCB12K454B-IAlso listed as ATCB12K454B-O	1 ton12,000 Btu/h · Non-ducted	100%	1.80	10.5	12,000	25.0	CEE 25CEE 26XcelES CC	1	218472383	Non-ducted, up to 1.5 tons	62.1
2ATCB24K454B-OAir Tempo · Builder Serieswith ductless indoor unit ATCB24K454B-IAlso listed as ATCB24K454B-O	2 tons24,000 Btu/h · Non-ducted	93%	1.80	10.0	22,400	22.5	CEE 25CEE 26XcelES CC	1	218472385	Non-ducted, 2 tons	58.0
3ATCB18K454B-OAir Tempo · Builder Serieswith ductless indoor unit ATCB18K454B-IAlso listed as ATCB18K454B-O	1.5 tons18,000 Btu/h · Non-ducted	99%	1.80	10.0	17,800	23.5	CEE 25CEE 26XcelES CC	1	218472384	Non-ducted, up to 1.5 tons	55.8

All-around best

Top 3 Air Tempo models on the all-around score across sizes. 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.
# · Outdoor model	Size · type	Cap. 5/47	COP@5°F	HSPF2	SEER2	EER2	Meets	Combos	AHRI ref.	Compared with	Score	Heating half	Cooling half	Cold-climate score
1ATCB12K454B-OAir Tempo · Builder Serieswith ductless indoor unit ATCB12K454B-IAlso listed as ATCB12K454B-O	1 ton12,000 Btu/h · Non-ducted	100%	1.80	10.5	25.0	14.0	CEE 25CEE 26XcelES CC	1	218472383	Non-ducted, up to 1.5 tons	74.4	62.1	86.7	62.1
2ATCB18K454B-OAir Tempo · Builder Serieswith ductless indoor unit ATCB18K454B-IAlso listed as ATCB18K454B-O	1.5 tons18,000 Btu/h · Non-ducted	99%	1.80	10.0	23.5	12.5	CEE 25CEE 26XcelES CC	1	218472384	Non-ducted, up to 1.5 tons	61.2	55.8	66.5	55.8
3ATCB24K454B-OAir Tempo · Builder Serieswith ductless indoor unit ATCB24K454B-IAlso listed as ATCB24K454B-O	2 tons24,000 Btu/h · Non-ducted	93%	1.80	10.0	22.5	11.7	CEE 25CEE 26XcelES CC	1	218472385	Non-ducted, 2 tons	56.1	58.0	54.2	58.0

Best model on each rating

Air Tempo’s model with the highest peer percentile on each rating, ranked by that one rating only
Rating	Model	Value	Compared with	Beats	AHRI ref.
COP at 5°F	ATCB12K454B-OAlso listed as ATCB12K454B-O	1.80	Non-ducted, up to 1.5 tons	19%	218472383
Capacity retention at 5°F	ATCB12K454B-OAlso listed as ATCB12K454B-O	100%	Non-ducted, up to 1.5 tons	87%	218472383
HSPF2	ATCB12K454B-OAlso listed as ATCB12K454B-O	10.5	Non-ducted, up to 1.5 tons	79%	218472383
SEER2	ATCB12K454B-OAlso listed as ATCB12K454B-O	25.0	Non-ducted, up to 1.5 tons	84%	218472383
EER2	ATCB12K454B-OAlso listed as ATCB12K454B-O	14.0	Non-ducted, up to 1.5 tons	83%	218472383
Heating capacity at 5°F	ATCB18K454B-OAlso listed as ATCB18K454B-O	17,800 Btu/h	Non-ducted, up to 1.5 tons	90%	218472384

All 6 Air Tempo models in Explore

Air Tempo size class by size class: cold-climate and all-around

Its best model on each board in every size and duct type it makes. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there). Cold-climate picks must keep at least 70% of their heat at 5°F; the all-around score needs all five ratings and has no such bar.

Air Tempo: best cold-climate pick and best all-around model per size and duct type, with how many of its models are on each board (top 5 and 5 per class are in the snapshot)
Size and duct type	Cold-climate pickCold-climate score, best model	All-around bestAll-around score, best model
Non-ducted, up to 1.5 tons	62.1(50 is the typical model of its size class)ATCB12K454B-Owith ductless indoor unit ATCB12K454B-IAlso listed as ATCB12K454B-O4 of 4 models qualify · AHRI 218472383	74.4(50 is the typical model of its size class)ATCB12K454B-Owith ductless indoor unit ATCB12K454B-IAlso listed as ATCB12K454B-O4 of 4 models have all five ratings · AHRI 218472383
Non-ducted, 2 tons	58.0(50 is the typical model of its size class)ATCB24K454B-Owith ductless indoor unit ATCB24K454B-IAlso listed as ATCB24K454B-O2 of 2 models qualify · AHRI 218472385	56.1(50 is the typical model of its size class)ATCB24K454B-Owith ductless indoor unit ATCB24K454B-IAlso listed as ATCB24K454B-O2 of 2 models have all five ratings · AHRI 218472385

All-around board, every manufacturer

Newest Air Tempo certifications

By AHRI reference number; AHRI issues references in increasing order.

The 5 most recently certified Air Tempo outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
ATCB24K454B-O*Air Tempo · Builder Serieswith ductless indoor unit ATCB24K454B-I	2 tons24,000 Btu/h · Non-ducted	1.80	93%	10.0	22.5	CEE 25CEE 26XcelES CC	1	218687527
ATCB12K454B-O*Air Tempo · Builder Serieswith ductless indoor unit ATCB12K454B-I	1 ton12,000 Btu/h · Non-ducted	1.80	100%	10.5	25.0	CEE 25CEE 26XcelES CC	1	218687526
ATCB18K454B-O*Air Tempo · Builder Serieswith ductless indoor unit ATCB18K454B-I	1.5 tons18,000 Btu/h · Non-ducted	1.80	99%	10.0	23.5	CEE 25CEE 26XcelES CC	1	218679835
ATCB24K454B-OAir Tempo · Builder Serieswith ductless indoor unit ATCB24K454B-I	2 tons24,000 Btu/h · Non-ducted	1.80	93%	10.0	22.5	CEE 25CEE 26XcelES CC	1	218472385
ATCB18K454B-OAir Tempo · Builder Serieswith ductless indoor unit ATCB18K454B-I	1.5 tons18,000 Btu/h · Non-ducted	1.80	99%	10.0	23.5	CEE 25CEE 26XcelES CC	1	218472384

Shares hardware with

Manufacturers whose models are the same equipment under another badge. About OEM families

No shared hardware found for Air Tempo in this group.

Compare Air Tempo

Manufacturers of a similar size, side by side.

Compare with any manufacturer

Air Tempo includes these brand names as listed in AHRI: Air Tempo. Standards are checked against published thresholds; program rules beyond ratings are not checked.