What is the SEER2 rating of the ECO-AIR EDSO-36H?

The ECO-AIR EDSO-36H is rated at up to 21.2 SEER2 and 12.0 EER2 for cooling and up to 11.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2 certified matchups SEER2 ranges from 17.7-21.2.

Is the ECO-AIR EDSO-36H good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 37,600 BTU/h at 5°F with a COP of 2.10, so it is still 2.1 times as efficient as electric resistance heat at that temperature.

How much does the ECO-AIR EDSO-36H cost to run per year?

At its rated efficiency it costs about $814-$2,348 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,027 in Phoenix and $1,980 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Which indoor units work with the ECO-AIR EDSO-36H?

ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use ED4W-36U, EDHS-36U.

36,000 BTU mini-split heat pump · EDS Series

ECO-AIR EDSO-36H

Below average cooling efficiency and very good heating efficiency for a 36,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #103 of 205 36,000 BTU mini-splits for cooling efficiency, and costs about $965 a year to run in a mixed climate like Atlanta.

SEER2: 21.2 Cooling efficiency over a season
Below average · beats 35%
HSPF2: 11.1 Heating efficiency over a season
Very good · beats 78%
EER2: 12.0 Cooling efficiency on a 95°F day
Below average · beats 25%
Heat at 5°F: 37,600 BTU/h100% of its 47°F output
Average · beats 67%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 37,600 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 78% of mini-splits.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Cooling cost matters most - its SEER2 is below average for mini-splits.

Calculate my running cost

Details

Specifications36,000 BTU, R-454B

General
Brand	ECO-AIR
Outdoor unit model	EDSO-36H
Series	EDS Series
Type	Mini-split heat pump
Nominal size	36,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	January 10, 2025
Last certified	March 4, 2025
Cooling
SEER2Seasonal efficiency, higher is better	21.2 (range 17.7-21.2)
EER2Efficiency at 95°F outdoors	12.0
Cooling capacity	36,000-36,600 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	10.6-11.1
Capacity at 47°F	37,000-42,000 BTU/h
Capacity at 17°F	30,600-31,600 BTU/h
Capacity at 5°F	37,000-37,600 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.95-2.10
ENERGY STAR cold climate	Yes

Heating output as it gets colder100% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with ED4W-36U at the standard test temperatures, in BTU/h:

Certified matchups2 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.
ED4W-36U · cold climate	21.2	12.0	10.6	37,000	216759949
EDHS-36U · cold climate	17.7	12.0	11.1	37,600	216759969

Yearly running cost in 10 large cities$814-$2,348

Phoenix, AZ$1,027/yr
Miami, FL$814/yr
Houston, TX$922/yr
Atlanta, GA$965/yr
Los Angeles, CA$947/yr
New York, NY$2,348/yr
Chicago, IL$1,914/yr
Denver, CO$1,597/yr
Seattle, WA$987/yr
Minneapolis, MN$1,980/yr

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

Questions5

What is the SEER2 rating of the ECO-AIR EDSO-36H?: The ECO-AIR EDSO-36H is rated at up to 21.2 SEER2 and 12.0 EER2 for cooling and up to 11.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 2 certified matchups SEER2 ranges from 17.7-21.2.
Is the ECO-AIR EDSO-36H good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 37,600 BTU/h at 5°F with a COP of 2.10, so it is still 2.1 times as efficient as electric resistance heat at that temperature.
How much does the ECO-AIR EDSO-36H cost to run per year?: At its rated efficiency it costs about $814-$2,348 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,027 in Phoenix and $1,980 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Which indoor units work with the ECO-AIR EDSO-36H?: ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use ED4W-36U, EDHS-36U.
What refrigerant does the ECO-AIR EDSO-36H 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 $1,031/yrYou save $944/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 ECO-AIR EDSO-36H

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: $1,031
Current system, per year: $1,976
You save per year: $944
Payback: 14.3 years
Net after 10 years: -$4,059

Cooling $608Heating $424Electricity used: 6,447 kWhSaved vs. a minimum-efficiency heat pump: $497

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 36,000 BTU models

Blueridge BMS36HHUYC · cold climate21.2 SEER2 · 11.1 HSPF2
Mainline ML36HP230LCMH-O · cold climate21.2 SEER2 · 11.1 HSPF2
1HVAC ACIQ-36ZPL-HP230C · cold climate21.2 SEER2 · 11.1 HSPF2
Midea MO1HU-H36B-2A · cold climate21.2 SEER2 · 11.1 HSPF2
Fujitsu AOUH36KUAS1 · cold climate21.3 SEER2 · 10.5 HSPF2
Sea Breeze CSZ36H525ZMO · cold climate21.2 SEER2 · 10.8 HSPF2
MDV MOX630-36HFN10-M2X · cold climate21.3 SEER2 · 11.1 HSPF2
Continental NDHAMB-36-O · cold climate21.2 SEER2 · 10.6 HSPF2

See all 205 36,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of March 4, 2025. How we use the data.