What is the SEER2 rating of the MRCOOL MDPH18036D?

The MRCOOL MDPH18036D is rated at up to 18.0 SEER2 and 11.2 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the MRCOOL MDPH18036D good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 29,000 BTU/h at 5°F with a COP of 1.90, so it is still 1.9 times as efficient as electric resistance heat at that temperature.

How much does the MRCOOL MDPH18036D cost to run per year?

At its rated efficiency it costs about $889-$2,497 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,113 in Phoenix and $2,099 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the MRCOOL MDPH18036D the same as the GREE GK-H03TC/NHA-D(U)?

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.

3-ton packaged heat pump · Universal DC Inverter Packaged Unit

MRCOOL MDPH18036D

Very good cooling and heating efficiency for a 3-ton packaged heat pump, and certified for cold climates.

Ranks #4 of 22 3 ton packaged heat pumps for cooling efficiency, and costs about $1,033 a year to run in a mixed climate like Atlanta.

SEER2: 18.0 Cooling efficiency over a season
Very good · beats 86%
HSPF2: 8.5 Heating efficiency over a season
Very good · beats 73%
EER2: 11.2 Cooling efficiency on a 95°F day
Below average · beats 27%
Heat at 5°F: 29,000 BTU/h85% of its 47°F output
Average · beats 51%

A good fit if…

You want low cooling bills - its SEER2 beats 86% of packaged heat pumps.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 29,000 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 73% of packaged heat pumps.
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

Specifications3 ton, R-32

General
Brand	MRCOOL
Also sold as	GREE, AC Pro, Kinghome
Outdoor unit model	MDPH18036D
Series	Universal DC Inverter Packaged Unit
Type	Packaged heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-32
Connected (smart) capable	No
On the market since	December 8, 2025
Last certified	March 17, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.0 (range 18.0)
EER2Efficiency at 95°F outdoors	11.2
Cooling capacity	34,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.5
Capacity at 47°F	34,000 BTU/h
Capacity at 17°F	21,800 BTU/h
Capacity at 5°F	29,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.90
ENERGY STAR cold climate	Yes

Heating output as it gets colder85% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its best matchup 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.
- · cold climate	18.0	11.2	8.5	29,000	217905216

Same unit, other model numbers3

These model numbers have exactly the same certified ratings and matchups as the MRCOOL MDPH18036D: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

GREE GK-H03TC/NHA-D(U)
AC Pro PKHP-X-036VBC
Kinghome KH03TCNHA

Yearly running cost in 10 large cities$889-$2,497

Phoenix, AZ$1,113/yr
Miami, FL$889/yr
Houston, TX$998/yr
Atlanta, GA$1,033/yr
Los Angeles, CA$1,010/yr
New York, NY$2,497/yr
Chicago, IL$2,033/yr
Denver, CO$1,695/yr
Seattle, WA$1,045/yr
Minneapolis, MN$2,099/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 MRCOOL MDPH18036D?: The MRCOOL MDPH18036D is rated at up to 18.0 SEER2 and 11.2 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the MRCOOL MDPH18036D good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 29,000 BTU/h at 5°F with a COP of 1.90, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
How much does the MRCOOL MDPH18036D cost to run per year?: At its rated efficiency it costs about $889-$2,497 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,113 in Phoenix and $2,099 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the MRCOOL MDPH18036D the same as the GREE GK-H03TC/NHA-D(U)?: 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.
What refrigerant does the MRCOOL MDPH18036D use?: It uses 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 $1,113/yrYou save $640/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 MRCOOL MDPH18036D

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: $1,113
Current system, per year: $1,753
You save per year: $640
Payback: 20.3 years
Net after 10 years: -$6,598

Cooling $665Heating $448Electricity used: 6,956 kWhSaved vs. a minimum-efficiency heat pump: $232

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 3 ton models

GREE TK-H03TC/NHA-D(U) · cold climate18.0 SEER2 · 8.5 HSPF2
Bosch BPBA-36RCB-M18S18.0 SEER2 · 8.1 HSPF2
ECOER ERDA19H-36AD · cold climate18.3 SEER2 · 9.2 HSPF2
York PH9E36N00D2118.0 SEER2 · 8.1 HSPF2
Hisense AR-36U3R25U · cold climate18.5 SEER2 · 8.5 HSPF2
Daikin DHH0361********A16.4 SEER2 · 7.4 HSPF2
Lennox LHT036H5E*1P16.0 SEER2 · 7.2 HSPF2
Carrier 50VR-K36---3015.5 SEER2 · 7.2 HSPF2

See all 22 3 ton packaged heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of March 17, 2026. How we use the data.