HVAC Rated

4-ton central heat pump · MHP170 SERIES

MRCOOL MHP17048A-**A

Below average cooling and heating efficiency for a 4-ton central heat pump, but not rated for cold climates.

Ranks #274 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,495 a year to run in a mixed climate like Atlanta.

SEER2
15.6 Cooling efficiency over a season
Below average · beats 17%
HSPF2
8.3 Heating efficiency over a season
Below average · beats 30%
EER2
12.5 Cooling efficiency on a 95°F day
Very good · beats 80%
Heat at 5°F
25,600 BTU/h57% of its 47°F output
Excellent · beats 94%

A good fit if…

  • You want a choice of indoor units - 19 certified pairings.

Think twice if…

  • You often see nights below 0°F - it is not cold-climate certified.
  • Cooling cost matters most - its SEER2 is below average for central heat pumps.
  • You mainly need heat - its HSPF2 is below average for central heat pumps.
  • You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications4 ton, R-410A
General
BrandMRCOOL
Outdoor unit modelMHP17048A-**A
SeriesMHP170 SERIES
TypeCentral heat pump
Nominal size4 ton
CompressorVariable-speed units run longer at low powerSingle stage
RefrigerantR-410A
Connected (smart) capableNo
On the market sinceOctober 25, 2022
Last certifiedOctober 27, 2025
Cooling
SEER2Seasonal efficiency, higher is better15.6 (range 15.2-15.6)
EER2Efficiency at 95°F outdoors12.5-13.0
Cooling capacity46,500-48,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better8.0-8.3
Capacity at 47°F44,500-47,000 BTU/h
Capacity at 17°F30,200-31,600 BTU/h
Capacity at 5°F24,200-25,600 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater2.18-2.38
ENERGY STAR cold climateNo
Heating output as it gets colder57% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with MCHP51CNPA*+TDR+TXV at the standard test temperatures, in BTU/h:

Certified matchups19 indoor units

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

Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
MCHP51CNPA*+TDR+TXVMGM80SE090C5A15.612.58.325,200211737253
MCVP49CNPA+TDR+TXVMGM80SE090C5A15.613.08.125,000210325970
MCVP60CNPA+TDR+TXVMGM80SE090C5A15.613.08.125,200210325979
MCVP60CNPA+TDR+TXVMGM80SE110C5A15.412.58.325,400210325983
MCHP51CNPA*+TDR+TXVMGM96SE110C5XA15.412.58.325,400211737295
MCVP60CNPA+TDR+TXVMGM96SE110C5XA15.412.58.125,200210325981
MCVP48CNPA+TDR+TXVMGM80SE090C5A15.412.58.124,400210441090
MCVP60CNPA+TDR+TXVMGM96SE090C4XA15.412.58.125,400210325985
MCVP48BNPA+TDR+TXVMGM80SE090C5A15.412.58.124,400210325966
MCHP51CNPA*+TDR+TXVMGM80SE110C5A15.212.58.325,600211737262
MCVP48BNPA+TDR+TXVMGM96SE110C5XA15.212.58.124,200210325968
MCVP49CNPA+TDR+TXVMGM80SE110C5A15.212.58.125,600210325974
MCVP48CNPA+TDR+TXVMGM96SE110C5XA15.212.58.124,200210441093
MCVP49CNPA+TDR+TXVMGM96SE090C4XA15.212.58.125,400210325976
MCVP49CNPA+TDR+TXVMGM96SE110C5XA15.212.58.125,400210325972
MCVP48BNPA+TDR+TXVMGM80SE090B4A15.212.58.124,200210325963
MCHP60DNPA*+TDR+TXVMGM96SE135D5XA15.212.58.124,600211737340
MCHP48CNPA*+TDR+TXVMGM80SE090C5A15.212.58.024,400211737075
MCHP48CNPA*+TDR+TXVMGM96SE110C5XA15.212.58.024,800211737150
Yearly running cost in 10 large cities$1,426-$3,502

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 MHP17048A-**A?
The MRCOOL MHP17048A-**A is rated at up to 15.6 SEER2 and 12.5 EER2 for cooling and up to 8.3 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 19 certified matchups SEER2 ranges from 15.2-15.6.
Is the MRCOOL MHP17048A-**A good for cold climates?
It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 4-ton model.
How much does the MRCOOL MHP17048A-**A cost to run per year?
At its rated efficiency it costs about $1,426-$3,502 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,715 in Phoenix and $2,892 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 MRCOOL MHP17048A-**A?
ENERGY STAR lists 19 certified combinations for this outdoor unit. The highest-rated ones use MCHP51CNPA*+TDR+TXV, MCVP49CNPA+TDR+TXV, MCVP60CNPA+TDR+TXV.
What refrigerant does the MRCOOL MHP17048A-**A 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 $1,679/yrYou save $729/yrSee details ↓
1. Where you live
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.

2. The heat pump MRCOOL MHP17048A-**A
3. What it replaces
4. Price replace the example with your quote
Heat pump, per year
$1,679
Current system, per year
$2,408
You save per year
$729
Payback
24.7 years
Net after 10 years
-$10,707

Cooling $1,072Heating $607Electricity used: 10,494 kWhSaved vs. a minimum-efficiency heat pump: $162

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.

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Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of October 27, 2025. How we use the data.