What is the SEER2 rating of the NG Trade OMSTAR091E?

The NG Trade OMSTAR091E is rated at up to 24.6 SEER2 and 14.7 EER2 for cooling and up to 13.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the NG Trade OMSTAR091E good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 8,200 BTU/h at 5°F with a COP of 2.33, so it is still 2.3 times as efficient as electric resistance heat at that temperature.

How much does the NG Trade OMSTAR091E cost to run per year?

At its rated efficiency it costs about $172-$481 a year in electricity in large U.S. cities, depending on climate and local rates - for example $215 in Phoenix and $404 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the NG Trade OMSTAR091E the same as the NORTON AIR CONDITIONERS OHP-09-22-23-A?

Yes, as far as the certified ratings go. ENERGY STAR lists 3 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 NG Trade OMSTAR091E?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses IMSTAR091E.

9,000 BTU mini-split heat pump · OMS Series

NG Trade OMSTAR091E

Very good cooling efficiency and excellent heating efficiency for a 9,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #188 of 395 9,000 BTU mini-splits for cooling efficiency, and costs about $199 a year to run in a mixed climate like Atlanta.

SEER2: 24.6 Cooling efficiency over a season
Very good · beats 80%
HSPF2: 13.0 Heating efficiency over a season
Excellent · beats 94%
EER2: 14.7 Cooling efficiency on a 95°F day
Very good · beats 89%
Heat at 5°F: 8,200 BTU/h82% of its 47°F output
Very good · beats 88%

A good fit if…

You want low cooling bills - its SEER2 beats 80% of mini-splits.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 8,200 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 94% of mini-splits.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Nothing stands out - its ratings have no weak spot for its class.

Calculate my running cost

Details

Specifications9,000 BTU, R-454B

General
Brand	NG Trade
Also sold as	NORTON AIR CONDITIONERS, Danby
Outdoor unit model	OMSTAR091E
Series	OMS Series
Type	Mini-split heat pump
Nominal size	9,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	January 1, 2025
Last certified	May 28, 2026
Cooling
SEER2Seasonal efficiency, higher is better	24.6 (range 24.6)
EER2Efficiency at 95°F outdoors	14.7
Cooling capacity	9,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	13.0
Capacity at 47°F	10,000 BTU/h
Capacity at 17°F	9,300 BTU/h
Capacity at 5°F	8,200 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.33
ENERGY STAR cold climate	Yes

Heating output as it gets colder82% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with IMSTAR091E 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.
IMSTAR091E · cold climate	24.6	14.7	13.0	8,200	216732475

Same unit, other model numbers2

These model numbers have exactly the same certified ratings and matchups as the NG Trade OMSTAR091E: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

NORTON AIR CONDITIONERS OHP-09-22-23-A
Danby DAS090AGBAHWDB-O

Yearly running cost in 10 large cities$172-$481

Phoenix, AZ$215/yr
Miami, FL$172/yr
Houston, TX$193/yr
Atlanta, GA$199/yr
Los Angeles, CA$195/yr
New York, NY$481/yr
Chicago, IL$391/yr
Denver, CO$326/yr
Seattle, WA$201/yr
Minneapolis, MN$404/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 NG Trade OMSTAR091E?: The NG Trade OMSTAR091E is rated at up to 24.6 SEER2 and 14.7 EER2 for cooling and up to 13.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the NG Trade OMSTAR091E good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 8,200 BTU/h at 5°F with a COP of 2.33, so it is still 2.3 times as efficient as electric resistance heat at that temperature.
How much does the NG Trade OMSTAR091E cost to run per year?: At its rated efficiency it costs about $172-$481 a year in electricity in large U.S. cities, depending on climate and local rates - for example $215 in Phoenix and $404 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the NG Trade OMSTAR091E the same as the NORTON AIR CONDITIONERS OHP-09-22-23-A?: Yes, as far as the certified ratings go. ENERGY STAR lists 3 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 NG Trade OMSTAR091E?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses IMSTAR091E.
What refrigerant does the NG Trade OMSTAR091E use?: It uses R-454B.

Running cost and savings

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

Heat pump $215/yrYou save $265/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 NG Trade OMSTAR091E

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: $215
Current system, per year: $480
You save per year: $265
Payback: 13.2 years
Net after 10 years: -$845

Cooling $129Heating $86Electricity used: 1,343 kWhSaved vs. a minimum-efficiency heat pump: $156

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 9,000 BTU models

DUCTLESSAIRE 454-9-O-DA · cold climate24.6 SEER2 · 13.0 HSPF2
Panasonic CU-YM9CBUC · cold climate24.6 SEER2 · 13.0 HSPF2
ComfortStar CPP3-09CD(O) · cold climate24.6 SEER2 · 13.0 HSPF2
SLIMAIR SHC09AE2AG · cold climate24.6 SEER2 · 13.0 HSPF2
ApooDr ASG24-09H220V1B · cold climate24.6 SEER2 · 13.0 HSPF2
ZERO ZMSB-09HV-USHHR2-O · cold climate24.6 SEER2 · 13.0 HSPF2
Samsung AR09DXFAMWKX25.0 SEER2 · 9.0 HSPF2
ACIQ ACIQ-09ZS-HP115C · cold climate24.5 SEER2 · 10.7 HSPF2

See all 395 9,000 BTU mini-splits, ranked

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