iFLOW heat pump efficiency: 14 outdoor models compared

iFLOW has 14 heat pump outdoor models certified with this refrigerant group, in 19 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 iFLOW makes. iFLOW has no QMID (IRS Qualified Manufacturer ID) on file, so it is not ranked against other manufacturers.

New to heat pump ratings? The Simple view explains them in plain words →

ManufacturerData as of Oct 11, 2026updated Oct 11, 2026 · sources

Outdoor models: 14
AHRI certifications: 19
Efficiency index: 43%; Typical model vs same-size, same-type peers (14 models)
Meet CEE 2025: 14.3%; 2 models

How iFLOW 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.

iFLOW against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of iFLOW’s own modelsiFLOW is strongest on HSPF2 (its typical model beats 70% of comparable models) and weakest on EER2 (21%).

iFLOW
Middle half of its models
Other ranked manufacturers

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

Average peer percentile of iFLOW’s models
Rating	Beats comparable models	Rank	Raw median
Efficiency index14 models scored	43%	Not ranked	—
COP at 5°F14 models scored	44%	Not ranked	1.88
Capacity retention at 5°F14 models scored	57%	Not ranked	79%
HSPF214 models scored	70%	Not ranked	9.1
SEER214 models scored	36%	Not ranked	15.2
EER214 models scored	21%	Not ranked	10.0
Heating capacity at 5°F14 models scored	63%	Not ranked	29,000 Btu/h

Standards met

Share of iFLOW’s models with at least one qualifying certification
Standard	Share	Models
CEE 2025 Tier 1 (Split ASHP)	14.3%	2
CEE 2026 Tier 1 (Split ASHP)	14.3%	2
CEE Advanced Tier (Split ASHP)	0%	0
Xcel Energy Colorado cold-climate ASHP (2025)	50%	7
DOE Cold Climate Heat Pump Challenge	0%	0
ENERGY STAR Cold Climate	0%	0

Sizes and duct types offered

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

iFLOW’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

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

Source: AHRI Directory · as of Oct 11, 2026

Share of comparable models beaten, per peer group
Size and duct type	Models	Index	COP@5°F	HSPF2	SEER2
Ducted, up to 1.5 tons	1	52%	76%	58%	37%
Ducted, 2 tons	2	50%	62%	84%	47%
Ducted, 2.5–3 tons	5	43%	46%	70%	33%
Ducted, 3.5–4.5 tons	6	39%	30%	68%	36%

Every iFLOW model in the market

iFLOW’s 14 models with a known size and duct type, over the shape of the whole catalog.

iFLOW models by size and ratingColoured: iFLOW · grey shapes: all 11,475 models · lines: catalog medians by size

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

Dots: 14 iflow models, each through its representative certification, in the colour of the rating shown. The grey shapes count all 11,475 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	175	1.70	1.85	1.90	2.10	2.26
Ducted, 1 ton	340	1.85	1.90	2.00	2.40	2.65
Ducted, 1.5 tons	789	1.75	1.85	2.00	2.20	2.55
Ducted, 2 tons	782	1.73	1.80	2.00	2.10	2.33
Ducted, 2.5 tons	735	1.71	1.80	1.90	2.09	2.48
Ducted, 3 tons	652	1.68	1.70	1.90	2.06	2.36
Ducted, 3.5 tons	641	1.61	1.80	1.95	2.20	2.50
Ducted, 4 tons	367	1.70	1.80	1.91	2.02	2.52
Ducted, 4.5 tons	544	1.70	1.80	1.91	2.08	2.34
Ducted, 5 tons	25	1.80	1.80	1.90	1.90	2.15
Non-ducted, 0.5 tons	717	1.75	1.81	1.97	2.10	2.19
Non-ducted, 1 ton	1,064	1.75	1.80	1.90	2.07	2.25
Non-ducted, 1.5 tons	886	1.80	1.80	1.87	2.07	2.21
Non-ducted, 2 tons	564	1.80	1.80	1.83	2.04	2.21
Non-ducted, 2.5 tons	275	1.80	1.81	1.84	1.86	2.03
Non-ducted, 3 tons	502	1.80	1.80	1.90	2.00	2.09
Non-ducted, 3.5 tons	70	1.82	1.83	1.90	2.00	2.28
Non-ducted, 4 tons	263	1.80	1.80	1.98	2.00	2.10
Non-ducted, 4.5 tons	103	1.77	1.77	1.80	1.97	2.02
Non-ducted, 5 tons	29	1.98	2.00	2.10	2.30	2.47

Source: AHRI Directory · as of Oct 11, 2026

Top iFLOW 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 5 iFLOW 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
170HPIC36AiFLOWwith ducted air handler 70C3036CA	3 tons35,000 Btu/h · Ducted	82%	2.00	10.0	32,000	15.2	Xcel	2	212546252	Ducted, 2.5–3 tons	78.6
270HPIC30AiFLOWwith ducted air handler 70C3036CA	2.5 tons30,000 Btu/h · Ducted	82%	1.85	9.7	27,000	15.5	Xcel	1	212546250	Ducted, 2.5–3 tons	67.8
370HPIR24AiFLOWwith ducted air handler 70C1824BA	2 tons24,000 Btu/h · Ducted	72%	2.20	9.8	18,500	15.7	Xcel	2	217729802	Ducted, 2 tons	67.3
470HPIC24AiFLOWwith ducted air handler 70C1824AA	2 tons24,000 Btu/h · Ducted	80%	2.00	9.8	20,000	16.1	CEE 25CEE 26Xcel	2	218029482	Ducted, 2 tons	65.5
570HPIC18AiFLOWwith ducted air handler 70C1824BA	1.5 tons18,000 Btu/h · Ducted	79%	2.20	9.5	15,000	16.1	CEE 25CEE 26Xcel	1	212546248	Ducted, up to 1.5 tons	63.7

All-around best

Top 5 iFLOW 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
170HPIC24AiFLOWwith ducted air handler 70C1824AA	2 tons24,000 Btu/h · Ducted	80%	2.00	9.8	16.1	10.7	CEE 25CEE 26Xcel	2	218029482	Ducted, 2 tons	53.2	65.5	41.0	65.5
270HPIC36AiFLOWwith ducted air handler 70C3036CA	3 tons35,000 Btu/h · Ducted	82%	2.00	10.0	15.2	10.0	Xcel	2	212546252	Ducted, 2.5–3 tons	53.0	78.6	27.3	78.6
370HPIC30AiFLOWwith ducted air handler 70C3036CA	2.5 tons30,000 Btu/h · Ducted	82%	1.85	9.7	15.5	10.5	Xcel	1	212546250	Ducted, 2.5–3 tons	52.6	67.8	37.4	67.8
470HPIC18AiFLOWwith ducted air handler 70C1824BA	1.5 tons18,000 Btu/h · Ducted	79%	2.20	9.5	16.1	11.7	CEE 25CEE 26Xcel	1	212546248	Ducted, up to 1.5 tons	51.6	63.7	39.5	63.7
570HPIC45AiFLOWwith ducted air handler 70C5460DA	4 tons45,000 Btu/h · Ducted	85%	1.80	9.2	15.2	10.0	Xcel	1	213279880	Ducted, 3.5–4.5 tons	49.8	61.3	38.2	61.3

Best model on each rating

iFLOW’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	70HPIC18A	2.20	Ducted, up to 1.5 tons	76%	212546248
Capacity retention at 5°F	70HPIC45A	85%	Ducted, 3.5–4.5 tons	78%	213279880
HSPF2	70HPIC36A	10.0	Ducted, 2.5–3 tons	93%	212546252
SEER2	70HPIC24A	16.5	Ducted, 2 tons	48%	212546249
EER2	70HPIC18A	11.7	Ducted, up to 1.5 tons	36%	212546248
Heating capacity at 5°F	70HPIC45A	46,500 Btu/h	Ducted, 3.5–4.5 tons	89%	213279880

All 14 iFLOW models in Explore

iFLOW 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.

iFLOW: 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
Ducted, up to 1.5 tons	63.7(50 is the typical model of its size class)70HPIC18Awith ducted air handler 70C1824BA1 of 1 models qualify · AHRI 212546248	51.6(50 is the typical model of its size class)70HPIC18Awith ducted air handler 70C1824BA1 of 1 models have all five ratings · AHRI 212546248
Ducted, 2 tons	67.3(50 is the typical model of its size class)70HPIR24Awith ducted air handler 70C1824BA2 of 2 models qualify · AHRI 217729802	53.2(50 is the typical model of its size class)70HPIC24Awith ducted air handler 70C1824AA2 of 2 models have all five ratings · AHRI 218029482
Ducted, 2.5–3 tons	78.6(50 is the typical model of its size class)70HPIC36Awith ducted air handler 70C3036CA3 of 5 models qualify · AHRI 212546252	53.0(50 is the typical model of its size class)70HPIC36Awith ducted air handler 70C3036CA5 of 5 models have all five ratings · AHRI 212546252
Ducted, 3.5–4.5 tons	61.3(50 is the typical model of its size class)70HPIC45Awith ducted air handler 70C5460DA3 of 6 models qualify · AHRI 213279880	49.8(50 is the typical model of its size class)70HPIC45Awith ducted air handler 70C5460DA6 of 6 models have all five ratings · AHRI 213279880

All-around board, every manufacturer

Newest iFLOW certifications

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

The 5 most recently certified iFLOW outdoor models
Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	Meets	Combos	AHRI ref.
70HPIC24AiFLOWwith ducted air handler 70C1824AA	2 tons24,000 Btu/h · Ducted	2.00	80%	9.8	16.1	CEE 25CEE 26Xcel	2	218029482
70HIPC36SiFLOWwith ducted air handler 70C3036BA	3 tons35,000 Btu/h · Ducted	1.80	83%	8.5	15.2	Xcel	2	217956238
70HPIR60AiFLOWwith ducted air handler 70C5460DA	4.5 tons53,000 Btu/h · Ducted	1.90	59%	8.5	15.2	None	1	217729804
70HPIR48AiFLOWwith ducted air handler 70C4248CA	4 tons48,000 Btu/h · Ducted	1.80	55%	8.3	14.3	None	1	217729803
70HPIR24AiFLOWwith ducted air handler 70C1824BA	2 tons24,000 Btu/h · Ducted	2.20	72%	9.8	15.7	Xcel	2	217729802

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Manufacturers of a similar size, side by side.

Compare with any manufacturer

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