What is SEER2 and why does it matter?

SEER2 (Seasonal Energy Efficiency Ratio 2) measures cooling efficiency over a typical cooling season. Higher SEER2 means lower electricity costs. The minimum federal standard is 14.3 for split systems. The most efficient mini splits reach SEER2 ratings above 30. A unit with SEER2 of 20 uses roughly 30% less energy for cooling than one rated at 14.3.

Do heat pumps work in cold climates?

Yes. Modern cold-climate heat pumps can operate efficiently down to -15F or even -22F. The key metric is COP (Coefficient of Performance) at low temperatures. A COP of 2.0 at 5F means the heat pump produces twice as much heat energy as the electricity it consumes, even at that extreme temperature. Look for models with Energy Star Cold Climate certification and check their COP ratings at 5F and 17F.

What is the federal tax credit for heat pumps?

Under the Inflation Reduction Act, qualifying heat pumps are eligible for a federal tax credit of 30% of the cost, up to $2,000 per year. To qualify, the system must meet specific efficiency requirements set by the CEE (Consortium for Energy Efficiency). HeatPushers tracks which models are eligible based on NEEP and Energy Star certification data.

What size mini split do I need?

Mini split sizing depends on your room size, insulation quality, climate, and ceiling height. A rough guideline is 20 BTU per square foot for average insulation, but this varies significantly. A 12,000 BTU (1 ton) unit typically covers 400-600 sq ft, while a 24,000 BTU (2 ton) unit covers 800-1,200 sq ft. For accurate sizing, use HeatPushers to enter your home details and local weather — the tool calculates heat loss and shows which units can handle your specific conditions.

What is the difference between HSPF2 and COP?

HSPF2 (Heating Seasonal Performance Factor 2) measures overall heating efficiency across an entire heating season as a single number. COP (Coefficient of Performance) measures efficiency at a specific outdoor temperature. HSPF2 is useful for comparing models at a glance, but COP at specific temperatures (5F, 17F, 47F) tells you how the unit actually performs in your climate. A unit with lower HSPF2 might actually perform better in extreme cold if it has higher COP at 5F.

Mini split vs central heat pump: which should I choose?

Mini splits (ductless) are ideal for homes without existing ductwork, single rooms, or additions. They're typically more efficient because there's no energy lost through ducts. Central (ducted) heat pumps work with existing duct systems and can heat/cool the whole house through one unit. Mini splits offer zone control — you can set different temperatures in different rooms. Central systems are simpler if you already have ductwork. Many homeowners use a combination: a central system for baseline heating plus mini splits in specific rooms.

HeatPushers - Compare Heat Pump Prices & Energy Costs

Compare Heat Pump Prices & Energy Costs

HeatPushers helps you choose a heat pump by estimating total cost of ownership — not just sticker price. Enter your location and home details to see how much each model will actually cost to run based on real local weather data and NEEP-certified performance measurements. We track 633 models from 29 brands, including 417 ductless mini splits and 216 ducted systems.

Top-Rated Heat Pumps by Efficiency

Sorted by SEER2 rating (higher is better). Operation costs are calculated based on your location and home — enter your details for personalized estimates.

Name

Brand

Refrigerant

Performance

Operation

Mitsubishi Electric MSZ-FX06NL & MUZ-FX06NLHZ 6,000 BTU 35 SEER2 Wall Mounted Hyper Heating Heat Pump System - R454B
from $2,351 (2 stores)

MITSUBISHI ELECTRIC

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-10.0F	1.98	810	1.98	810	1.93	9,000
5F	2.38	12,600	2.39	1,140	2.38	12,600
17F	3.45	6,000	2.74	1,310	2.69	14,400
47F	4.88	9,000	4.15	1,700	3.31	20,000
95F	6.28	6,000	4.15	1,700	3.31	14,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,351
Energy Cost	-
10-Year Cost	-

Mitsubishi Electric MSZ-FX09NL & MUZ-FX09NLHZ 9,000 BTU 33.1 SEER2 Wall Mounted Hyper-Heating Heat Pump System - R454B
from $2,652 (2 stores)

MITSUBISHI ELECTRIC

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-10.0F	2.05	1,470	2.05	1,470	2.01	12,000
5F	2.2	14,700	2.2	1,800	2.2	14,700
17F	3.47	7,700	2.44	2,000	2.39	16,300
47F	4.95	12,000	5.05	3,100	2.93	21,300
95F	5.38	9,000	4.58	2,500	2.78	15,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,652
Energy Cost	-
10-Year Cost	-

Fujitsu 9,000 BTU 33.1 SEER Wall Mounted Single Zone System - R410A
$2,014 at GotDuctless

FUJITSU

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-6.0F	2.39	3,100	2.39	3,100	1.96	14,000
5F	2.15	15,400	2.93	4,000	2.15	15,400
17F	3.61	7,400	3.63	5,200	2.28	16,000
47F	5.33	12,000	5.34	3,100	3.34	22,000
95F	5.28	9,000	8.26	3,100	4.14	12,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,014
Energy Cost	-
10-Year Cost	-

Fujitsu 9,000 BTU 33 SEER Extra Low Temp Wall Mounted Single Zone System - R410A
$2,056 at GotDuctless

FUJITSU

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-15.0F	1.21	2,100	1.21	2,100	1.46	11,100
5F	2.01	15,400	2.13	4,000	2.01	15,400
17F	3.5	7,400	2.67	5,200	2.12	16,000
47F	5.33	12,000	5.34	3,100	3.34	22,000
95F	5.28	9,000	8.26	3,100	4.14	12,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,056
Energy Cost	-
10-Year Cost	-

Fujitsu ASUH09KZAS & AOUH09KZAH1 9,000 BTU 33.1 SEER2 Extra Low Temperature Wall Mounted Heat Pump System - R32
$2,656 at GotDuctless

FUJITSU

R-32

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-15.0F	2.23	1,370	2.23	1,370	1.7	11,400
5F	2.26	15,400	3.09	1,900	2.26	15,400
17F	3.6	7,500	3.39	2,200	2.49	17,500
47F	5.33	12,000	5.13	3,500	3.08	23,000
95F	5.5	9,000	8.26	3,100	3.98	12,500

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,656
Energy Cost	-
10-Year Cost	-

6,000 BTU 33.1 SEER Wall Mounted Mitsubishi Mini Split Single Zone Heat Pump - MZ-FS06NA
$1,899 at HVACDirect

MITSUBISHI ELECTRIC

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-13.0F	2.02	690	2.02	690	1.93	7,250
5F	2.46	10,500	2.42	990	2.46	10,500
17F	4.43	5,900	2.73	1,210	2.69	12,840
47F	4.64	8,700	4.26	1,600	3.23	14,000
95F	5.5	6,000	4.98	1,700	4.71	9,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$1,899
Energy Cost	-
10-Year Cost	-

6,000 BTU 33.1 SEER Wall Mounted Mitsubishi Mini Split H2i Hyper Heat Single Zone Heat Pump - MZ-FS06NAH
$1,999 at HVACDirect

MITSUBISHI ELECTRIC

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-13.0F	0.88	690	0.88	690	1.73	7,250
5F	2.46	10,500	1.16	990	2.23	10,500
17F	3.33	5,900	1.36	1,210	2.46	12,840
47F	4.64	8,700	4.26	1,600	3.23	14,000
95F	5.5	6,000	4.98	1,700	4.71	9,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$1,999
Energy Cost	-
10-Year Cost	-

Fujitsu ASUH12KZAS & AOUH12KZAH1 12,000 BTU 30.5 SEER2 Extra Low Temperature Wall Mounted Heat Pump System - R32
$2,908 at GotDuctless

FUJITSU

R-32

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-15.0F	2.74	1,400	2.74	1,400	1.81	12,200
5F	2.16	16,600	3.36	1,950	2.16	16,600
17F	3.45	10,000	3.39	2,200	2.44	18,700
47F	4.64	16,000	5.13	3,500	3.07	23,600
95F	4.69	12,000	8.26	3,100	3.84	16,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,908
Energy Cost	-
10-Year Cost	-

Fujitsu ASUH09KMAS & AOUH09KMAS1 9,000 BTU 30 SEER2 Altair 700 Wall Mounted Heat Pump System - R32
$2,055 at GotDuctless

FUJITSU

R-32

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
5F	2.32	10,300	2.55	2,000	2.32	10,300
17F	3.24	7,400	2.93	1,700	2.62	12,600
47F	4.63	12,000	5.86	2,800	2.64	14,500
95F	4.8	9,000	6.99	3,100	3.77	12,100

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,055
Energy Cost	-
10-Year Cost	-

Mitsubishi Electric MSZ-FX12NL & MUZ-FX12NLHZ 12,000 BTU 29.9 SEER2 Wall Mounted Hyper-Heating Heat Pump System - R454B
from $2,980 (2 stores)

MITSUBISHI ELECTRIC

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-10.0F	2.01	1,510	2.01	1,510	2.01	13,200
5F	2.2	16,200	2.26	1,850	2.2	16,200
17F	3.41	9,300	2.54	2,080	2.49	18,200
47F	4.2	13,200	5.05	3,100	3.22	23,500
95F	4.51	12,000	4.58	2,500	2.84	16,100

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,980
Energy Cost	-
10-Year Cost	-

9,000 BTU 30.5 SEER Wall Mounted Mitsubishi Mini Split Single Zone Heat Pump - MZ-FS09NA
$1,955 at HVACDirect

MITSUBISHI ELECTRIC

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-13.0F	1.96	670	1.96	670	1.89	8,000
5F	2.4	11,300	2.34	960	2.41	11,590
17F	3.84	5,900	2.66	1,180	2.63	14,170
47F	4.54	9,600	4.26	1,600	3.03	18,000
95F	4.71	9,000	4.98	1,700	3.52	12,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$1,955
Energy Cost	-
10-Year Cost	-

9,000 BTU 30.5 SEER Wall Mounted Mitsubishi Mini Split H2i Hyper Heat Single Zone Heat Pump - MZ-FS09NAH
$2,125 at HVACDirect

MITSUBISHI ELECTRIC

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-13.0F	0.85	670	0.85	670	1.71	8,000
5F	2.4	11,300	1.13	960	2.21	11,590
17F	2.98	5,900	1.33	1,180	2.43	14,170
47F	4.54	9,600	4.26	1,600	3.03	18,000
95F	4.71	9,000	4.98	1,700	3.52	12,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,125
Energy Cost	-
10-Year Cost	-

9,000 BTU 28.2 SEER Floor Mounted Mitsubishi Mini Split H2i Hyper Heat Single Zone Heat Pump - MZ-KJ09NA
$2,675 at HVACDirect

MITSUBISHI ELECTRIC

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
5F	-	-	2.25	1,150	2.01	11,000
17F	2.75	7,500	2.42	1,650	2.11	13,400
47F	4.3	11,000	3.15	2,900	2.35	19,000
95F	5.07	9,000	3.84	2,490	4.01	15,450

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,675
Energy Cost	-
10-Year Cost	-

Mitsubishi Electric MSZ-GX09NL & MUZ-GX09NL 9,000 BTU 28.4 SEER2 Wall Mounted Heat Pump System - R454B
from $2,115 (2 stores)

MITSUBISHI ELECTRIC

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-10.0F	1.41	480	1.41	480	1.43	5,330
5F	1.8	8,100	1.86	700	1.8	8,100
17F	2.69	6,700	2.22	910	2.15	10,200
47F	4.44	10,900	5.69	3,300	2.68	15,900
95F	4.55	9,000	4.47	3,200	3.41	12,200

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,115
Energy Cost	-
10-Year Cost	-

Mitsubishi Electric MSZ-GX09NL & MUZ-GX09NLHZ 28.4 SEER2 Wall Mounted Hyper Heating Heat Pump System - R454B
from $2,326 (2 stores)

MITSUBISHI ELECTRIC

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-10.0F	1.96	670	1.96	670	1.95	7,450
5F	1.8	9,600	2.29	860	1.8	9,600
17F	2.66	5,900	2.32	1,030	2.39	11,500
47F	4.85	9,600	5.69	3,300	2.66	15,900
95F	4.55	9,000	4.47	3,200	3.41	12,200

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,326
Energy Cost	-
10-Year Cost	-

9,000 BTU 28.1 SEER2 ACiQ Extreme Series Single Zone Wall Mount Mini Split System - WiFi Enabled
$2,062 at HVACDirect

POLARWAVE

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
5F	2.0	10,600	1.72	1,938	1.97	11,109
17F	2.53	9,500	1.82	2,108	2.04	12,371
47F	3.82	12,000	4.02	5,070	2.99	15,296
95F	4.71	9,000	5.12	3,320	3.58	14,398

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,062
Energy Cost	-
10-Year Cost	-

Fujitsu ASUH12KMAS & AOUH12KMAS1 12,000 BTU 27.5 SEER2 Altair 700 Wall Mounted Heat Pump System - R32
$2,263 at GotDuctless

FUJITSU

R-32

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
5F	2.39	10,600	2.55	2,000	2.39	10,600
17F	3.11	8,700	2.93	1,700	2.65	13,200
47F	4.32	14,000	5.86	2,800	2.5	15,000
95F	3.95	12,000	6.99	3,100	3.26	13,800

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,263
Energy Cost	-
10-Year Cost	-

Fujitsu ASUH15KZAS & AOUH15KZAH1 15,000 BTU 27.5 SEER2 Extra Low Temperature Orion XLTH Wall Mounted Heat Pump System - R32
$3,121 at GotDuctless

FUJITSU

R-32

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-15.0F	0.66	1,900	0.66	1,900	1.92	16,400
5F	2.1	21,000	3.49	2,500	2.1	21,000
17F	3.44	11,400	3.81	2,600	2.35	22,000
47F	4.59	18,000	5.07	4,150	3.26	25,000
95F	4.34	14,500	6.06	3,100	3.28	19,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$3,121
Energy Cost	-
10-Year Cost	-

9,000 BTU ACiQ Extreme 28.1 SEER2 Single Zone Wall Mount Mini Split Heat Pump System - R454B | 230V
$1,500 at HVACDirect

ACIQ

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-22.0F	1.17	2,000	1.17	2,000	1.11	5,100
5F	1.8	11,500	1.72	4,100	1.8	11,500
17F	2.71	9,800	2.22	5,300	1.75	12,800
47F	3.74	12,000	4.84	3,800	3.35	16,000
95F	4.55	9,000	8.57	3,800	3.35	13,500

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$1,500
Energy Cost	-
10-Year Cost	-

Daikin FTXM09WVJU9 & RXM09WVJU9 9,000 BTU 27.4 SEER2 Atmosphera Series Wall Mounted Heat Pump System - R32
from $2,271 (3 stores)

DAIKIN

R-32

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-13.0F	3.74	2,300	3.74	2,300	1.83	10,000
5F	1.8	11,000	3.74	2,300	2.0	11,000
17F	3.17	6,600	4.32	2,800	2.33	13,200
47F	4.61	11,000	6.14	4,400	3.22	15,700
95F	4.8	9,000	4.78	4,400	4.26	12,500

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,271
Energy Cost	-
10-Year Cost	-

Senville AURA Series Mini Split Air Conditioner Inverter Heat Pump, 9000 BTU, Works with Alexa, Energy Star, White
$1,300 at Amazon

SENVILLE

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-22.0F	1.17	2,000	1.17	2,000	1.11	5,100
5F	1.8	11,500	1.72	4,100	1.8	11,500
17F	2.71	9,800	2.22	5,300	1.75	12,800
47F	3.74	12,000	4.84	3,800	3.35	16,000
95F	4.55	9,000	8.57	3,800	3.35	13,500

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$1,300
Energy Cost	-
10-Year Cost	-

9,000 BTU 27.2 SEER2 ACiQ Single Zone Slim Floor Mount Mini Split System | Extreme Series - R454B | 230V
$1,900 at HVACDirect

ACIQ

R454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-22.0F	1.04	2,700	1.04	2,700	1.02	4,700
5F	1.84	11,300	1.83	2,000	1.84	11,300
17F	2.71	9,800	2.49	2,800	2.17	12,200
47F	4.4	9,000	4.96	4,400	3.5	16,100
95F	4.4	9,000	5.71	3,700	3.49	13,700

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$1,900
Energy Cost	-
10-Year Cost	-

Durastar DRAS09F2A & DRA1H09S2A 9,000 BTU 27.2 SEER2 Floor Mounted Sirius Heat Heat Pump System - R454B
$2,305 at GotDuctless

DURASTAR

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-22.0F	1.04	2,700	1.04	2,700	1.02	4,700
5F	1.84	11,300	1.83	2,000	1.84	11,300
17F	2.71	9,800	2.49	2,800	2.17	12,200
47F	4.4	9,000	4.96	4,400	3.5	16,100
95F	4.4	9,000	5.71	3,700	3.49	13,700

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,305
Energy Cost	-
10-Year Cost	-

C&H 9K-Btu Console 27.2 SEER2 Mini Split H-Heat Pump (-22°F) E-Star: 15.1 EER/10.9 HSPF (R454B)
$1,680 at MiniSplitWarehouse

COOPER&HUNTER

R-454B

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-22.0F	1.04	2,700	1.04	2,700	1.02	4,700
5F	1.84	11,300	1.83	2,000	1.84	11,300
17F	2.71	9,800	2.49	2,800	2.17	12,200
47F	4.4	9,000	4.96	4,400	3.5	16,100
95F	4.4	9,000	5.71	3,700	3.49	13,700

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$1,680
Energy Cost	-
10-Year Cost	-

9,000 BTU 38 SEER Wall Mount Gree Mini Split Sapphire Single Zone Heat Pump - SAP09HP230V1A
$2,038 at HVACDirect

GREE

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
5F	1.91	13,000	2.56	1,745	1.91	13,000
17F	2.9	8,200	3.3	2,250	2.41	14,610
47F	3.52	9,000	3.37	2,300	2.66	13,600
95F	4.88	9,000	8.79	1,500	2.72	13,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,038
Energy Cost	-
10-Year Cost	-

LG LGRED 9,000 BTU 27.5 SEER Low-Temperature Wall Mounted Heat Pump System
$2,240 at GotDuctless

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-13.0F	0.41	310	0.41	310	2.56	8,030
5F	-	-	0.69	450	3.13	11,000
17F	3.51	6,700	0.88	603	3.36	11,940
47F	4.54	11,000	1.5	1,023	6.45	20,472
95F	4.63	9,000	1.5	1,023	5.15	13,000

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,240
Energy Cost	-
10-Year Cost	-

12,000 BTU 25.5 SEER Floor Mounted Mitsubishi Mini Split H2i Hyper Heat Single Zone Heat Pump - MZ-KJ12NA
$2,899 at HVACDirect

MITSUBISHI ELECTRIC

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
5F	-	-	2.25	1,150	2.1	13,000
17F	2.77	8,800	2.42	1,650	2.29	14,800
47F	4.23	13,000	3.15	2,900	2.8	22,800
95F	4.4	12,000	3.92	2,540	3.91	16,550

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,899
Energy Cost	-
10-Year Cost	-

CH 6K-Btu 26.5 SEER Ductless AC Mini Split 230v Heat Pump (-22°F) (R410a)
$1,369 at MiniSplitWarehouse

C&H

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
5F	2.09	7,500	1.81	2,105	2.19	8,581
17F	2.9	8,500	2.29	2,108	2.45	10,041
47F	3.95	7,000	4.35	3,565	3.73	13,241
95F	4.63	6,000	2.61	3,388	3.75	12,402

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$1,369
Energy Cost	-
10-Year Cost	-

12,000 BTU 26.1 SEER Wall Mounted Mitsubishi Mini Split FS Single Zone Heat Pump - MZ-FS12NA
$2,189 at HVACDirect

MITSUBISHI ELECTRIC

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-13.0F	2.13	1,670	2.13	1,670	2.08	11,000
5F	2.3	14,700	2.42	2,230	2.42	14,690
17F	4.04	8,400	2.77	2,650	2.74	17,410
47F	4.24	12,300	3.87	3,700	3.11	21,000
95F	4.04	12,000	4.31	2,500	3.47	13,600

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,189
Energy Cost	-
10-Year Cost	-

12,000 BTU 26.1 SEER Wall Mounted Mitsubishi Mini Split H2i Hyper Heat Single Zone Heat Pump - MZ-FS12NAH
$2,389 at HVACDirect

MITSUBISHI ELECTRIC

R-410A

Temp	COP	@ rated BTU	COP	@ min BTU	COP	@ max BTU
-13.0F	1.36	1,670	1.36	1,670	1.92	11,000
5F	2.3	14,700	1.63	2,230	2.25	14,690
17F	3.33	8,400	1.89	2,650	2.56	17,410
47F	4.24	12,300	3.87	3,700	3.11	21,000
95F	4.04	12,000	4.31	2,500	3.47	13,600

kWh Per Year, Just Heatpump	-
kWh Backup Heat Needed	-
kWh Total per Year	-
Hours Over Capacity	-
Hours Short Cycling	-
Purchase Cost	$2,389
Energy Cost	-
10-Year Cost	-

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Name	Brand	SEER2	HSPF2	Works to	Price	Cost/Year

This is a prototype I'm working on, and would love feedback - send any thoughts/comments/suggestions for improvement to tophatmonkey@gmail.com

This page is made to help you figure out heat pumps. Heat pumps used to have universally terrible performance when it got below 40 degrees, but in recent years, that's changed - some now work well down to -22! But that's not true for all heat pumps, which is why I made this tool to use the actual performance metrics to estimate how each would behave with your house, in your specific location and your weather.

How?

First, use the map to choose where your house is.
Using that, we get the hourly weather for your location for the full year.
Then, use the text boxes to describe your house - where is it, how big it is, how well insulated, and how much your electricity costs.
Using that, we make a model of your house and estimate heat loss for every hour.
Using those together, along with capacity/efficiency data at different temps for lots of heat pumps, we estimate how much electricity each one would use, and figure out which ones won't be able to keep up - look for "Hours Over Capacity" to see which heat pumps aren't quite keeping up. A little of that is OK, a lot, not so much.
The page combines the purchase price (amortized) with the annual electricity cost to show a blended cost per year. A more efficient heat pump might cost more upfront, but if you need a lot of heating or cooling, it might end up being cheaper overall. We sort by that annual cost.

This page may look kind of crappy, but don't judge this book by its cover! It's more sophisticated than most pages that look a lot nicer.

Heat pumps are pretty awesome. They're basically air conditioners that can run in either direction, and because they move heat between in and outside instead of just creating it, they can be more than 100% efficient! In many cases, they're in the range of 400% efficient, or even more. You can get more heat in your house using natural gas to generate electricity to run a heat pump than if you burn the gas directly in your house. Crazy!

This tool is for people who are interested in buying a heat pump without going through a contractor, or for any contractors who might find comparisons useful. In many cases, especially with minisplits, it's not too hard to do it yourself, and much cheaper than hiring a professional. But they can be a bit tricky to compare when it comes to efficiency versus cost tradeoffs, which is why I built this tool to help you play around the numbers and figure out what might be right for you.

If you decide to DIY this, though, I'd advise a few things. First, watch a bunch of YouTube DIY videos, but be aware that it's not quite as simple to do a good job of it as they show. If you get one of the MrCool DIY series pumps, you can just use their pre-evacuated linesets, and I've heard that's pretty simple. But if you go with one of the others with normal linesets, you need a vacuum pump, torque wrench, and the other tools they recommend, but you also need a digital micron gauge, a flaring tool, and you probably want a coring tool with shutoff valve, and you might want to do a pressure test with nitrogen, which means you probably need a pressure regulator. You probably also want a higher quality vacuum pump than most YouTubers show. Many YouTubers use an analog manifold, but for pulling a deep vacuum and making sure it holds, that's like trying to measure inches with your car's odometer - the level to which you need to measure is invisible on that scale. Instead, you want a digital micron gauge. This isn't to scare you off, I did my own this way and it wasn't hard once I figured out what I needed, this is just to make it so you don't get halfway into your project before you realize the real cost of doing this right.

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