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Best compact mini-split heat pumps, ranked on official ENERGY STAR specs
Ductless mini-split heat pumps whose official ENERGY STAR cooling capacity is 12,000 Btu/h or less, compared on the official certified mini-split record. We score official SEER2, official HSPF2, official EER2 and official COP at 5°F. Missing official fields are shown as Not listed and score at the category minimum. Official ratings are for the certified outdoor and indoor combination shown. Rebadged official model numbers with identical scored fields share one page.
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Top pick
F
Fujitsu AIRSTAGE H-Series (AOUH09KTAP1)
Score 9.7/10 · Check price
Why it wins: Official 9,000 Btu/h official cooling, 33.5 official SEER2. Official ENERGY STAR record lists 33.5 SEER2.. Official ENERGY STAR record lists 14 HSPF2..
"Not listed" means the official manufacturer specification table we used does not publish that figure. Prices show "Check price" until a retailer feed provides a current price.
A ductless mini-split heat pump uses refrigerant under pressure and a dedicated high-voltage circuit. Installation, line-set work, vacuum, and refrigerant charging should be done by an EPA Section 608 certified HVAC technician following the maker's instructions, the National Electrical Code, and local rules. Several official refrigerants in this catalog, including R-32 and R-454B, are mildly flammable (A2L); do not attempt a refrigerant DIY install. Leave required outdoor clearances, slope the condensate drain, and use a disconnect at the outdoor unit. Official cooling and heating capacities are certified combination ratings, not a guarantee that a unit will heat or cool a given room — size the system with a load calculation. Confirm the current official specification, the indoor head type, and the line-set limits with the maker and the installer before you buy.
Best for: Official 12,000 Btu/h official cooling, 26 official SEER2
8.8/10
What we like
Official ENERGY STAR record lists 26 SEER2.
Official ENERGY STAR record lists 12 HSPF2.
Official ENERGY STAR record lists a COP at 5°F of 2.5.
Official ENERGY STAR record lists a cold-climate designation.
Watch out for
Official ratings are for the certified outdoor and indoor combination shown; a different official indoor head can change the certified figures.
Score breakdown
Official SEER230%
Official HSPF225%
Official EER220%
Official COP at 5°F25%
Official SEER2
26
Official HSPF2
12
Official EER2
16
Official COP at 5°F
2.5
Official ENERGY STAR unique ID
3,815,313
Official outdoor unit model number
RAV-BP121AT2P-UL
Official indoor unit model number
RAV-HB121UTP-UL
Official series name
RAV-BP121AT2P-UL
Official product type
HP - Mini or Multi Split
Official cooling capacity
12,000 Btu/h
Official heating capacity at 47°F
12,000 Btu/h
Official heating capacity at 17°F
8,500 Btu/h
Official heating capacity at 5°F
10,100 Btu/h
Official cold-climate designation
Yes
Official ENERGY STAR Most Efficient 2025
Yes
Official refrigerant type
R-454B
Official AHRI reference number
216415462
Other official indoor models listed with this outdoor unit
RAV-HB121KRTP-UL, RAV-HB121BTP-UL
Official ENERGY STAR date certified
03/03/2025
Source-data note
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
Best for: Official 9,000 Btu/h official cooling, 30 official SEER2
8.4/10
What we like
Official ENERGY STAR record lists 30 SEER2.
Official ENERGY STAR record lists 14 HSPF2.
Official ENERGY STAR record lists a cold-climate designation.
Watch out for
Official ratings are for the certified outdoor and indoor combination shown; a different official indoor head can change the certified figures.
Score breakdown
Official SEER230%
Official HSPF225%
Official EER220%
Official COP at 5°F25%
Official SEER2
30
Official HSPF2
14
Official EER2
16
Official COP at 5°F
1.9
Official ENERGY STAR unique ID
2,473,648
Official outdoor unit model number
ASH109URDE**
Official indoor unit model number
ASYW09URDE**
Official series name
Endure
Official product type
HP - Mini or Multi Split
Official cooling capacity
9,000 Btu/h
Official heating capacity at 47°F
10,000 Btu/h
Official heating capacity at 17°F
7,800 Btu/h
Official heating capacity at 5°F
10,600 Btu/h
Official cold-climate designation
Yes
Official ENERGY STAR Most Efficient 2025
Yes
Official refrigerant type
R-410A
Official AHRI reference number
212409456
Other official indoor models listed with this outdoor unit
USYM09UCDSA
Official ENERGY STAR date certified
06/09/2026
Source-data note
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
Best for: Official 9,000 Btu/h official cooling, 30 official SEER2
8.4/10
What we like
Official ENERGY STAR record lists 30 SEER2.
Official ENERGY STAR record lists 14 HSPF2.
Official ENERGY STAR record lists a cold-climate designation.
Watch out for
Official ratings are for the certified outdoor and indoor combination shown; a different official indoor head can change the certified figures.
Score breakdown
Official SEER230%
Official HSPF225%
Official EER220%
Official COP at 5°F25%
Official SEER2
30
Official HSPF2
14
Official EER2
16
Official COP at 5°F
1.9
Official ENERGY STAR unique ID
2,473,639
Official outdoor unit model number
1U09EH2HE**
Official indoor unit model number
AW09EH2HE**
Official series name
Arctic
Official product type
HP - Mini or Multi Split
Official cooling capacity
9,000 Btu/h
Official heating capacity at 47°F
10,000 Btu/h
Official heating capacity at 17°F
7,800 Btu/h
Official heating capacity at 5°F
10,600 Btu/h
Official cold-climate designation
Yes
Official ENERGY STAR Most Efficient 2025
Yes
Official refrigerant type
R-410A
Official AHRI reference number
212409447
Official indoor unit brand
HAIER
Other official indoor models listed with this outdoor unit
USYM09UCDSA
Official ENERGY STAR date certified
06/09/2026
Source-data note
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
Best for: Official 9,000 Btu/h official cooling, 27.4 official SEER2
7.6/10
What we like
Official ENERGY STAR record lists 27.4 SEER2.
Official ENERGY STAR record lists 12.5 HSPF2.
Official ENERGY STAR record lists a cold-climate designation.
Watch out for
Official ratings are for the certified outdoor and indoor combination shown; a different official indoor head can change the certified figures.
Score breakdown
Official SEER230%
Official HSPF225%
Official EER220%
Official COP at 5°F25%
Official SEER2
27.4
Official HSPF2
12.5
Official EER2
15.4
Official COP at 5°F
1.8
Official ENERGY STAR unique ID
3,712,334
Official outdoor unit model number
CH-RHP09-230VO
Official indoor unit model number
CH-RH09MASTWM-230VI
Official series name
CH Series
Official product type
HP - Mini or Multi Split
Official cooling capacity
9,000 Btu/h
Official heating capacity at 47°F
12,000 Btu/h
Official heating capacity at 17°F
12,000 Btu/h
Official heating capacity at 5°F
11,500 Btu/h
Official cold-climate designation
Yes
Official ENERGY STAR Most Efficient 2025
Yes
Official refrigerant type
R-454B
Official AHRI reference number
215864179
Other official indoor models listed with this outdoor unit
CH-RH09MCT, CH-RSH09MMC, CH-R09MOLVWM-230VI, CH-RB09MOLVWM-230VI, CH-RSH06-12MCT1W, CH-RSH09-12MCT, CH-RS09MDT-MS, CH-RS06-12MDT- MS
Official ENERGY STAR date certified
05/06/2026
Source-data note
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
Best for: Official 9,000 Btu/h official cooling, 27.4 official SEER2
7.6/10
What we like
Official ENERGY STAR record lists 27.4 SEER2.
Official ENERGY STAR record lists 12.5 HSPF2.
Official ENERGY STAR record lists a cold-climate designation.
Watch out for
Official ratings are for the certified outdoor and indoor combination shown; a different official indoor head can change the certified figures.
Score breakdown
Official SEER230%
Official HSPF225%
Official EER220%
Official COP at 5°F25%
Official SEER2
27.4
Official HSPF2
12.5
Official EER2
15.4
Official COP at 5°F
1.8
Official ENERGY STAR unique ID
4,428,892
Official outdoor unit model number
NDHAS26BA-09-O
Official indoor unit model number
NDHAS26BB-09-I
Official series name
NDH Series
Official product type
HP - Mini or Multi Split
Official cooling capacity
9,000 Btu/h
Official heating capacity at 47°F
12,000 Btu/h
Official heating capacity at 17°F
12,000 Btu/h
Official heating capacity at 5°F
11,500 Btu/h
Official cold-climate designation
Yes
Official ENERGY STAR Most Efficient 2025
Yes
Official refrigerant type
R-454B
Official AHRI reference number
217361766
Other official indoor models listed with this outdoor unit
NDHASCBB-09, NDHAS4CBB-12, NDHASHDBB-09
Official ENERGY STAR date certified
05/28/2026
Source-data note
The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups.
Buying guide: how to choose the right compact mini-split heat pump
This table is for official 12,000 Btu/h-and-under systems
Every product here has an official ENERGY STAR cooling capacity of 12,000 Btu/h or less. Mid-capacity systems from 12,001 to 24,000 Btu/h, and larger official capacities above 24,000 Btu/h, are ranked in their own tables so official capacity does not mix the scores. Official SEER2, official HSPF2, official EER2 and official COP at 5°F are still the scored fields.
Official ratings are for a certified combination, not a room we measured
SEER2, HSPF2, EER2 and COP at 5°F on the ENERGY STAR record are certified ratings for a listed outdoor unit matched with a listed indoor unit. A different official indoor head can change those figures. We show the official indoor model number on each page and, when the record lists other indoor matchups with different official ratings, we note that fact. Official cooling capacity is a certified combination figure, not a load calculation for your room.
What “Not listed” means
If official HSPF2, EER2 or COP at 5°F is missing from the ENERGY STAR record, the field is Not listed and scores at the category minimum. We do not fill gaps from retailer listings. Indoor-head style, line-set length and sound level are almost always Not listed on this dataset.
Safety
A ductless mini-split heat pump uses refrigerant under pressure and a dedicated high-voltage circuit. Installation, line-set work, vacuum, and refrigerant charging should be done by an EPA Section 608 certified HVAC technician following the maker's instructions, the National Electrical Code, and local rules. Several official refrigerants in this catalog, including R-32 and R-454B, are mildly flammable (A2L); do not attempt a refrigerant DIY install. Leave required outdoor clearances, slope the condensate drain, and use a disconnect at the outdoor unit. Official cooling and heating capacities are certified combination ratings, not a guarantee that a unit will heat or cool a given room — size the system with a load calculation. Confirm the current official specification, the indoor head type, and the line-set limits with the maker and the installer before you buy.
How this ranking is calculated
Score = weighted average of normalised specs, out of 10. Full method
Official SEER2The official SEER2 cooling-efficiency rating published on the ENERGY STAR certified mini-split heat pump record, in Btu/Wh. It is the certified combination rating for the outdoor and indoor units shown, not a seasonal bill we measured. Official figures above 28 are clamped at the 28 reference best. Scale: 16 → 28.
30%
Official HSPF2The official HSPF2 heating-efficiency rating published on the ENERGY STAR record, in Btu/Wh. It is the certified combination rating, not a winter heating test we ran. Official figures above 13 are clamped at the 13 reference best. Scale: 8 → 13.
25%
Official EER2The official EER2 cooling-efficiency rating published on the ENERGY STAR record, in Btu/Wh. EER2 is a certified steady-state figure at a stated test condition, not a seasonal measurement we made. Official figures above 16 are clamped at the 16 reference best. Scale: 9 → 16.
20%
Official COP at 5°FThe official coefficient of performance at 5°F published on the ENERGY STAR record. Higher official COP at 5°F means more certified heating output per unit of input at that cold-climate test point. It is a certified laboratory figure, not a test at a house we ran. If the field is blank it is shown as Not listed. Official figures above 2.6 are clamped at the 2.6 reference best. Scale: 1.5 → 2.6.
No. Rankings use only figures published on the ENERGY STAR certified mini-split heat pump record, each linked on the product page. We do not publish prices, customer ratings or hands-on test scores.
Why stop this table at 12,000 Btu/h?
We split official cooling capacity so a 36,000 Btu/h record does not sit on the same table as a 9,000 Btu/h bedroom unit. The scored fields are the same official SEER2, HSPF2, EER2 and COP at 5°F figures in every category. Official heating capacities at 47°F, 17°F and 5°F are shown as extra details when the record lists them.
What does official COP at 5°F mean?
It is the certified coefficient of performance at the 5°F test point on the ENERGY STAR record. A higher official COP means more certified heating output per unit of input at that condition. It is not a test we ran at a house, and a missing official COP is shown as Not listed.
Do commissions change the ranking?
No. Amazon may pay a commission if you buy through a Check price button, at no extra cost to you. Commissions never change the order, and no brand can pay for placement.
Why is indoor-head style, line-set length or sound level Not listed?
The ENERGY STAR mini-split heat pump record we used does not include a consistent official field for indoor-head style (wall, cassette, floor or concealed), maximum line-set length, or sound pressure. When those facts are not on the certified record, we show them as Not listed and do not fill the gap from retailer listings or brochures. Confirm the indoor style and the line-set limits with the maker before you buy.
Top pick · 9.7/10Fujitsu AIRSTAGE H-Series (AOUH09KTAP1)