HVAC Rated

3.5-ton central heat pump · K-SERIES

Friedrich FRP18AZ48AJVC

Very good cooling efficiency and below average heating efficiency for a 3.5-ton central heat pump, and certified for cold climates.

Ranks #19 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,400 a year to run in a mixed climate like Atlanta.

SEER2
19.0 Cooling efficiency over a season
Very good · beats 85%
HSPF2
8.5 Heating efficiency over a season
Below average · beats 38%
EER2
12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F
42,000 BTU/h88% of its 47°F output
Below average · beats 5%

A good fit if…

  • You want low cooling bills - its SEER2 beats 85% of central heat pumps.
  • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 42,000 BTU/h at 5°F.
  • You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

  • 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

Specifications3.5 ton, R-410A
General
BrandFriedrich
Outdoor unit modelFRP18AZ48AJVC
SeriesK-SERIES
TypeCentral heat pump
Nominal size3.5 ton
CompressorVariable-speed units run longer at low powerContinuously variable
RefrigerantR-410A
Connected (smart) capableNo
On the market sinceMay 17, 2023
Last certifiedJune 3, 2026
Cooling
SEER2Seasonal efficiency, higher is better19.0 (range 19.0)
EER2Efficiency at 95°F outdoors12.0
Cooling capacity45,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better8.5
Capacity at 47°F48,000 BTU/h
Capacity at 17°F41,500 BTU/h
Capacity at 5°F42,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater1.80
ENERGY STAR cold climateYes
Heating output as it gets colder88% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FRHMVZ6021SEACA 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 unitSEER2EER2HSPF2Heat @5°FAHRI ref.
FRHMVZ6021SEACA · cold climate19.012.08.542,000213087290
Yearly running cost in 10 large cities$1,120-$3,454

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

Questions5
What is the SEER2 rating of the Friedrich FRP18AZ48AJVC?
The Friedrich FRP18AZ48AJVC is rated at up to 19.0 SEER2 and 12.0 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 Friedrich FRP18AZ48AJVC good for cold climates?
Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 42,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.
How much does the Friedrich FRP18AZ48AJVC cost to run per year?
At its rated efficiency it costs about $1,120-$3,454 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,444 in Phoenix and $2,934 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 Friedrich FRP18AZ48AJVC?
ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses FRHMVZ6021SEACA.
What refrigerant does the Friedrich FRP18AZ48AJVC 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 $1,466/yrYou save $903/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 Friedrich FRP18AZ48AJVC
3. What it replaces
4. Price replace the example with your quote
Heat pump, per year
$1,466
Current system, per year
$2,369
You save per year
$903
Payback
18.8 years
Net after 10 years
-$7,968

Cooling $834Heating $632Electricity used: 9,163 kWhSaved vs. a minimum-efficiency heat pump: $358

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 3.5 ton models

See all 138 3.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 3, 2026. How we use the data.