Skip to content
Rebate.Blue

DEMULLER heat pump efficiency: 8 outdoor models compared

DEMULLER has 8 heat pump outdoor models certified with this refrigerant group, in 8 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 DEMULLER makes. DEMULLER 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 updated · sources

Outdoor models
8
AHRI certifications
8
Efficiency index
28%
Typical model vs same-size, same-type peers (8 models)
Meet CEE 2025
50%
4 models

How DEMULLER 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.
DEMULLER against every ranked manufacturerPeer scores, 0–100 · grey ticks: each ranked manufacturer · shaded: the middle half of DEMULLER’s own modelsDEMULLER is strongest on capacity retention at 5°F (its typical model beats 40% of comparable models) and weakest on HSPF2 (15%).
  • DEMULLER
  • Middle half of its models
  • Other ranked manufacturers
DEMULLER

Source: AHRI Directory, NEEP · as of

Average peer percentile of DEMULLER’s models
RatingBeats comparable modelsRankRaw median
Efficiency index8 models scored28%Not ranked—
COP at 5°F8 models scored21%Not ranked1.81
Capacity retention at 5°F8 models scored40%Not ranked73%
HSPF28 models scored15%Not ranked8.3
SEER28 models scored33%Not ranked19.5
EER28 models scored29%Not ranked11.1
Heating capacity at 5°F8 models scored23%Not ranked7,700 Btu/h

Standards met

Share of DEMULLER’s models with at least one qualifying certification
StandardShareModels
CEE 2025 Tier 1 (Split ASHP)50%4
CEE 2026 Tier 1 (Split ASHP)50%4
CEE Advanced Tier (Split ASHP)0%0
Xcel Energy Colorado cold-climate ASHP (2025)75%6
DOE Cold Climate Heat Pump Challenge0%0
ENERGY STAR Cold Climate0%0

Sizes and duct types offered

Models per peer group, and how they score against the other models of that group.
DEMULLER’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
  • DEMULLER (median, middle 50%, 10th–90th)
  • All models of the group
Non-ducted, up to 1.5 tons1.953,455 modelsmedian

Source: AHRI Directory · as of

Share of comparable models beaten, per peer group
Size and duct typeModelsIndexCOP@5°FHSPF2SEER2
Non-ducted, up to 1.5 tons828%21%15%33%

Every DEMULLER model in the market

DEMULLER’s 8 models with a known size and duct type, over the shape of the whole catalog.
DEMULLER models by size and ratingColoured: DEMULLER · grey shapes: all 14,508 models · lines: catalog medians by size
  • DEMULLER models
  • Ducted median by size
  • Non-ducted median by size
  • Every model at each size (width = count)
  • Standard threshold

Dots: 8 demuller 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, sizeModels10th pct.25thMedian75th90th
Ducted, 0.5 tons8261.641.711.751.852.24
Ducted, 1 ton4071.801.902.052.412.45
Ducted, 1.5 tons9921.751.862.002.172.40
Ducted, 2 tons9991.751.862.002.182.30
Ducted, 2.5 tons1,0401.701.802.002.102.36
Ducted, 3 tons6961.801.902.002.102.42
Ducted, 3.5 tons8651.701.802.002.102.46
Ducted, 4 tons7261.801.862.002.122.41
Ducted, 4.5 tons6901.701.801.902.102.20
Ducted, 5 tons861.892.002.102.102.10
Non-ducted, 0.5 tons1,1861.751.801.902.002.22
Non-ducted, 1 ton1,3431.801.801.992.102.21
Non-ducted, 1.5 tons1,2611.801.802.002.102.31
Non-ducted, 2 tons7611.801.982.002.102.30
Non-ducted, 2.5 tons4031.801.852.002.002.10
Non-ducted, 3 tons4731.901.982.002.032.20
Non-ducted, 3.5 tons2802.002.002.002.052.10
Non-ducted, 4 tons2041.962.002.052.102.11
Non-ducted, 4.5 tons781.901.911.952.012.01
Non-ducted, 5 tons841.992.002.052.202.20

Source: AHRI Directory · as of

Top DEMULLER 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 4 DEMULLER 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 modelSize · typeCap. 5/47COP@5°FHSPF2Btu/h @5°FSEER2MeetsCombosAHRI ref.Compared withScore
1DMLHT1W-09R4CBPH2DEMULLERwith ductless indoor unit DMLHT1G-09R4CBPH2Also listed as DMLHT1W-09R4BBPH21 ton9,000 Btu/h · Non-ducted89%1.909.08,00022.0CEE 25CEE 26Xcel1216623860Non-ducted, up to 1.5 tons47.6
2DMLHT1W-12R4CBPH2DEMULLERwith ductless indoor unit DMLHT1G-12R4CBPH2Also listed as DMLHT1W-12R4BBPH21 ton12,000 Btu/h · Non-ducted70%1.869.08,40022.0CEE 25CEE 26Xcel1216623862Non-ducted, up to 1.5 tons29.6
3DMLHT1W-09R4CBPH1DEMULLERwith ductless indoor unit DMLHT1G-09R4CBPH11 ton9,000 Btu/h · Non-ducted78%1.757.57,00017.0Xcel1216623856Non-ducted, up to 1.5 tons20.8
4DMLHT1W-09R4BBPH1DEMULLERwith ductless indoor unit DMLHT1G-09R4BBPH11 ton9,000 Btu/h · Non-ducted76%1.757.56,80017.0Xcel1216623857Non-ducted, up to 1.5 tons18.2

All-around best

Top 5 DEMULLER 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 modelSize · typeCap. 5/47COP@5°FHSPF2SEER2EER2MeetsCombosAHRI ref.Compared withScoreHeating halfCooling halfCold-climate score
1DMLHT1W-09R4CBPH2DEMULLERwith ductless indoor unit DMLHT1G-09R4CBPH2Also listed as DMLHT1W-09R4BBPH21 ton9,000 Btu/h · Non-ducted89%1.909.022.012.0CEE 25CEE 26Xcel1216623860Non-ducted, up to 1.5 tons49.347.651.047.6
2DMLHT1W-12R4CBPH2DEMULLERwith ductless indoor unit DMLHT1G-12R4CBPH2Also listed as DMLHT1W-12R4BBPH21 ton12,000 Btu/h · Non-ducted70%1.869.022.012.0CEE 25CEE 26Xcel1216623862Non-ducted, up to 1.5 tons40.329.651.029.6
3DMLHT1W-09R4CBPH1DEMULLERwith ductless indoor unit DMLHT1G-09R4CBPH11 ton9,000 Btu/h · Non-ducted78%1.757.517.010.2Xcel1216623856Non-ducted, up to 1.5 tons16.920.813.020.8
4DMLHT1W-09R4BBPH1DEMULLERwith ductless indoor unit DMLHT1G-09R4BBPH11 ton9,000 Btu/h · Non-ducted76%1.757.517.010.2Xcel1216623857Non-ducted, up to 1.5 tons15.618.213.018.2
5DMLHT1W-12R4BBPH1DEMULLERwith ductless indoor unit DMLHT1G-12R4BBPH11 ton12,000 Btu/h · Non-ducted62%1.707.517.09.8None1216623859Non-ducted, up to 1.5 tons7.44.210.6Not a pick

Best model on each rating

DEMULLER’s model with the highest peer percentile on each rating, ranked by that one rating only
RatingModelValueCompared withBeatsAHRI ref.
COP at 5°FDMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH21.90Non-ducted, up to 1.5 tons42%216623860
Capacity retention at 5°FDMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH289%Non-ducted, up to 1.5 tons71%216623860
HSPF2DMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH29.0Non-ducted, up to 1.5 tons29%216623860
SEER2DMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH222.0Non-ducted, up to 1.5 tons56%216623860
EER2DMLHT1W-09R4CBPH2Also listed as DMLHT1W-09R4BBPH212.0Non-ducted, up to 1.5 tons44%216623860
Heating capacity at 5°FDMLHT1W-12R4CBPH2Also listed as DMLHT1W-12R4BBPH28,400 Btu/hNon-ducted, up to 1.5 tons34%216623862

All 8 DEMULLER models in Explore

DEMULLER 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.
DEMULLER: 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 typeCold-climate pickCold-climate score, best modelAll-around bestAll-around score, best model
Non-ducted, up to 1.5 tons47.6(50 is the typical model of its size class)DMLHT1W-09R4CBPH2with ductless indoor unit DMLHT1G-09R4CBPH2Also listed as DMLHT1W-09R4BBPH26 of 8 models qualify · AHRI 21662386049.3(50 is the typical model of its size class)DMLHT1W-09R4CBPH2with ductless indoor unit DMLHT1G-09R4CBPH2Also listed as DMLHT1W-09R4BBPH28 of 8 models have all five ratings · AHRI 216623860

All-around board, every manufacturer

Newest DEMULLER certifications

By AHRI reference number; AHRI issues references in increasing order.
The 5 most recently certified DEMULLER outdoor models
Outdoor modelSize · typeCOP@5°FCap. 5/47HSPF2SEER2MeetsCombosAHRI ref.
DMLHT1W-12R4BBPH2DEMULLERwith ductless indoor unit DMLHT1G-12R4BBPH21 ton12,000 Btu/h · Non-ducted1.8670%9.022.0CEE 25CEE 26Xcel1216623863
DMLHT1W-12R4CBPH2DEMULLERwith ductless indoor unit DMLHT1G-12R4CBPH21 ton12,000 Btu/h · Non-ducted1.8670%9.022.0CEE 25CEE 26Xcel1216623862
DMLHT1W-09R4BBPH2DEMULLERwith ductless indoor unit DMLHT1G-09R4BBPH21 ton9,000 Btu/h · Non-ducted1.9089%9.022.0CEE 25CEE 26Xcel1216623861
DMLHT1W-09R4CBPH2DEMULLERwith ductless indoor unit DMLHT1G-09R4CBPH21 ton9,000 Btu/h · Non-ducted1.9089%9.022.0CEE 25CEE 26Xcel1216623860
DMLHT1W-12R4BBPH1DEMULLERwith ductless indoor unit DMLHT1G-12R4BBPH11 ton12,000 Btu/h · Non-ducted1.7062%7.517.0None1216623859

Shares hardware with

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

No shared hardware found for DEMULLER in this group.

Compare DEMULLER

Manufacturers of a similar size, side by side.

Compare with any manufacturer

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