What is the SEER2 rating of the Innovair WIN12H7H51(O)?

The Innovair WIN12H7H51(O) is rated at up to 23.5 SEER2 and 12.7 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Innovair WIN12H7H51(O) good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 8,400 BTU/h at 5°F with a COP of 2.05, so it is still 2.1 times as efficient as electric resistance heat at that temperature.

How much does the Innovair WIN12H7H51(O) cost to run per year?

At its rated efficiency it costs about $242-$768 a year in electricity in large U.S. cities, depending on climate and local rates - for example $315 in Phoenix and $655 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Innovair WIN12H7H51(O) the same as the Pioneer YN012GHFI25RPH?

Yes, as far as the certified ratings go. ENERGY STAR lists 4 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.

Which indoor units work with the Innovair WIN12H7H51(O)?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses WIN12H7H51(I).

What refrigerant does the Innovair WIN12H7H51(O) use?

It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

12,000 BTU mini-split heat pump · Quantum Hyper Heat

Innovair WIN12H7H51(O)

Very good cooling efficiency and below average heating efficiency for a 12,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #221 of 394 12,000 BTU mini-splits for cooling efficiency, and costs about $309 a year to run in a mixed climate like Atlanta.

SEER2: 23.5 Cooling efficiency over a season
Very good · beats 70%
HSPF2: 9.5 Heating efficiency over a season
Below average · beats 24%
EER2: 12.7 Cooling efficiency on a 95°F day
Average · beats 54%
Heat at 5°F: 8,400 BTU/h70% of its 47°F output
Average · beats 60%

A good fit if…

You want low cooling bills - its SEER2 beats 70% of mini-splits.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 8,400 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

You mainly need heat - its HSPF2 is below average for mini-splits.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications12,000 BTU, R-410A

General
Brand	Innovair
Also sold as	Pioneer, AIR-CON, ComfiAire
Outdoor unit model	WIN12H7H51(O)
Series	Quantum Hyper Heat
Type	Mini-split heat pump
Nominal size	12,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	May 12, 2022
Last certified	May 28, 2026
Cooling
SEER2Seasonal efficiency, higher is better	23.5 (range 23.5)
EER2Efficiency at 95°F outdoors	12.7
Cooling capacity	12,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.5
Capacity at 47°F	12,000 BTU/h
Capacity at 17°F	6,800 BTU/h
Capacity at 5°F	8,400 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.05
ENERGY STAR cold climate	Yes

Heating output as it gets colder70% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with WIN12H7H51(I) at the standard test temperatures, in BTU/h:

Certified matchups1 indoor units

The same outdoor unit scores differently with each indoor unit. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unit	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
WIN12H7H51(I) · cold climate	23.5	12.7	9.5	8,400	208286574

Same unit, other model numbers3

These model numbers have exactly the same certified ratings and matchups as the Innovair WIN12H7H51(O): the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Pioneer YN012GHFI25RPH
AIR-CON ABHCI4H4S12
ComfiAire CA-12UXEO

Yearly running cost in 10 large cities$242-$768

Phoenix, AZ$315/yr
Miami, FL$242/yr
Houston, TX$283/yr
Atlanta, GA$309/yr
Los Angeles, CA$306/yr
New York, NY$768/yr
Chicago, IL$629/yr
Denver, CO$527/yr
Seattle, WA$327/yr
Minneapolis, MN$655/yr

At each state's average electricity price and the city's typical heating and cooling hours.

Questions6

What is the SEER2 rating of the Innovair WIN12H7H51(O)?: The Innovair WIN12H7H51(O) is rated at up to 23.5 SEER2 and 12.7 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Innovair WIN12H7H51(O) good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 8,400 BTU/h at 5°F with a COP of 2.05, so it is still 2.1 times as efficient as electric resistance heat at that temperature.
How much does the Innovair WIN12H7H51(O) cost to run per year?: At its rated efficiency it costs about $242-$768 a year in electricity in large U.S. cities, depending on climate and local rates - for example $315 in Phoenix and $655 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Innovair WIN12H7H51(O) the same as the Pioneer YN012GHFI25RPH?: Yes, as far as the certified ratings go. ENERGY STAR lists 4 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
Which indoor units work with the Innovair WIN12H7H51(O)?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses WIN12H7H51(I).
What refrigerant does the Innovair WIN12H7H51(O) use?: It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

Running cost and savings

Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

Heat pump $321/yrYou save $298/yrSee details ↓

1. Where you live

StateCityElectricity ¢ per kWh

Adjust heating and cooling hours

Filled in from your city's climate. Change them if you run the system much more or less than usual.

Cooling hours full-load hours per yearHeating hours full-load hours per year

2. The heat pump Innovair WIN12H7H51(O)

Find a model (fills in the ratings below)

SEER2 cooling efficiencyHSPF2 heating efficiencyCooling capacity BTU/hHeating capacity BTU/h

3. What it replaces

Current heatingFurnace efficiency (AFUE %)Gas price, $/thermCurrent coolingOld AC rating SEER2 (10 ≈ 15+ years old)

4. Price replace the example with your quote

Installed price, $Rebates and incentives, $ utility, state

Heat pump, per year: $321
Current system, per year: $619
You save per year: $298
Payback: 15.1 years
Net after 10 years: -$1,525

Cooling $180Heating $141Electricity used: 2,008 kWhSaved vs. a minimum-efficiency heat pump: $153

Estimates use the unit's rated SEER2 and HSPF2, full-load hours derived from NOAA 1991-2020 degree days, average residential electricity prices from the U.S. EIA (12 months to July 2026) and fuel prices from EIA (2025 for natural gas, week of 2026-10-05 for propane and heating oil). Very cold days that need backup heat are not modelled. Federal minimum for comparison: 14.3 SEER2 / 7.5 HSPF2.

Similar 12,000 BTU models

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Bosch BMS500-AAS012-0CSXRD23.4 SEER2 · 9.5 HSPF2
Friedrich FRHSR12A3A · cold climate23.5 SEER2 · 9.8 HSPF2
Midea MO1ES-H12B-1A23.4 SEER2 · 9.5 HSPF2
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See all 394 12,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 28, 2026. How we use the data.