What is the SEER2 rating of the EMI MHSD118DACFC?

The EMI MHSD118DACFC is rated at up to 18.0 SEER2 and 12.4 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 16.1-18.0.

Is the EMI MHSD118DACFC good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 16,500 BTU/h at 5°F with a COP of 2.20, so it is still 2.2 times as efficient as electric resistance heat at that temperature.

How much does the EMI MHSD118DACFC cost to run per year?

At its rated efficiency it costs about $470-$1,262 a year in electricity in large U.S. cities, depending on climate and local rates - for example $580 in Phoenix and $1,055 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 EMI MHSD118DACFC?

ENERGY STAR lists 4 certified combinations for this outdoor unit. The highest-rated ones use MHAH118DACFC, MHCO24DACFC.

What refrigerant does the EMI MHSD118DACFC 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.

1.5-ton central heat pump · MHAH Series

EMI MHSD118DACFC

Average cooling efficiency and very good heating efficiency for a 1.5-ton central heat pump, and certified for cold climates.

Ranks #60 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $527 a year to run in a mixed climate like Atlanta.

SEER2: 18.0 Cooling efficiency over a season
Average · beats 66%
HSPF2: 9.5 Heating efficiency over a season
Very good · beats 70%
EER2: 12.4 Cooling efficiency on a 95°F day
Very good · beats 76%
Heat at 5°F: 16,500 BTU/h87% of its 47°F output
Very good · beats 76%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 16,500 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 70% of central heat pumps.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications1.5 ton, R-410A

General
Brand	EMI
Also sold as	CONFORTO
Outdoor unit model	MHSD118DACFC
Series	MHAH Series
Type	Central heat pump
Nominal size	1.5 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	October 18, 2024
Last certified	June 29, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.0 (range 16.1-18.0)
EER2Efficiency at 95°F outdoors	11.7-12.4
Cooling capacity	18,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.3-9.5
Capacity at 47°F	19,000 BTU/h
Capacity at 17°F	13,500-14,700 BTU/h
Capacity at 5°F	15,000-16,500 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.04-2.20
ENERGY STAR cold climate	Yes

Heating output as it gets colder87% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with MHAH118DACFC at the standard test temperatures, in BTU/h:

Certified matchups4 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.
MHAH118DACFC · cold climate	18.0	12.4	9.3	16,500	216372807
MHAH118DACFC · cold climate	18.0	12.4	9.3	16,500	216683748
MHCO24DACFC · cold climate	16.1	11.7	9.5	15,000	218631472
MHCO24DACFC · cold climate	16.1	11.7	9.5	15,000	218631466

Yearly running cost in 10 large cities$470-$1,262

Phoenix, AZ$580/yr
Miami, FL$470/yr
Houston, TX$520/yr
Atlanta, GA$527/yr
Los Angeles, CA$514/yr
New York, NY$1,262/yr
Chicago, IL$1,025/yr
Denver, CO$852/yr
Seattle, WA$524/yr
Minneapolis, MN$1,055/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 EMI MHSD118DACFC?: The EMI MHSD118DACFC is rated at up to 18.0 SEER2 and 12.4 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 16.1-18.0.
Is the EMI MHSD118DACFC good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 16,500 BTU/h at 5°F with a COP of 2.20, so it is still 2.2 times as efficient as electric resistance heat at that temperature.
How much does the EMI MHSD118DACFC cost to run per year?: At its rated efficiency it costs about $470-$1,262 a year in electricity in large U.S. cities, depending on climate and local rates - for example $580 in Phoenix and $1,055 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 EMI MHSD118DACFC?: ENERGY STAR lists 4 certified combinations for this outdoor unit. The highest-rated ones use MHAH118DACFC, MHCO24DACFC.
What refrigerant does the EMI MHSD118DACFC 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 $576/yrYou save $368/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 EMI MHSD118DACFC

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: $576
Current system, per year: $944
You save per year: $368
Payback: 19.0 years
Net after 10 years: -$3,315

Cooling $352Heating $224Electricity used: 3,600 kWhSaved vs. a minimum-efficiency heat pump: $151

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 1.5 ton models

Comfort-Aire A-VCD18SA-1 · cold climate18.0 SEER2 · 9.5 HSPF2
Midea 38MURAQ18AB3 · cold climate18.0 SEER2 · 9.5 HSPF2
Blueridge BMAH1820C · cold climate18.0 SEER2 · 9.5 HSPF2
Midea DLCURAH18ABK · cold climate18.0 SEER2 · 9.5 HSPF2
GREE GUD12W2/NHE-D(U) · cold climate18.5 SEER2 · 9.0 HSPF2
Panasonic CU-HE18YAHK6 · cold climate18.0 SEER2 · 9.5 HSPF2
UTL UCHA-18HFDCSN4 · cold climate18.5 SEER2 · 9.2 HSPF2
AI AIR CONDITIONING AUO18-18N1-M3H · cold climate18.0 SEER2 · 9.3 HSPF2

See all 170 1.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 29, 2026. How we use the data.