Heat Pump List
Menu

Sections

Tools

25VNA448A*031*

25VNA448A*031* is in the certified data.

Its certified full-speed heating output at 5°F is 36,200–36,400 Btu/h, 78% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

Carrier · central heat pump

25VNA448A*031* is in the certified data as of Sep 19, 2026. 25VNA448A*031* changed its certified SEER2 on 2 pairings from 21.0 to 20.5 in the certified data between September 2024 and August 2025.

6 certified pairings with 3 different figures. See all

Heating at 47°F

46,500

43,500 at 17°F

36,400 at 5°F

Btu/h, certified

2.26 COP at 5°F

Cooling at 95°F

43,500

Btu/h, certified

EER2 11.5 at 95°F

SEER2 20.5

Heating and cooling by outdoor temperature

Certified heating at 5, 17, and 47°F and cooling at 95°F for 25VNA448A*031*, by outdoor temperature Heating: 36,400 Btu/h at 5°F, 43,500 Btu/h at 17°F, 46,500 Btu/h at 47°F. Cooling: 43,500 Btu/h at 95°F. The bars start at zero. Median of 3.5-ton central models: 33,000 Btu/h at 5°F, 31,000 Btu/h at 17°F, 44,000 Btu/h at 47°F, 44,000 Btu/h at 95°F. 0 10,000 20,000 30,000 40,000 50,000 Btu/h 36,400 5°F 43,500 17°F 46,500 47°F 43,500 95°F Outdoor temperature (°F)
  • Heating output
  • Cooling output
  • Median of 3.5-ton central models
  • Example heating load
  • Example cooling load
  • Frosting range, 17 to 45°F

This pairing delivers 46,500 Btu/h of heat at 47°F, 43,500 Btu/h at 17°F, and 36,400 Btu/h at 5°F, 78% of its 47°F rating. It delivers 43,500 Btu/h of cooling at 95°F. At 5°F that is 3,400 Btu/h above the example heating load of 33,000 Btu/h; at 95°F it is 26,500 Btu/h above the example cooling load of 17,000 Btu/h.

Each bar is a separate certified test, drawn at its outdoor temperature, starting at zero. The 47°F figure is at normal speed; the 17 and 5°F figures are at full speed. The short dark line on each bar is the median of 3.5-ton central models, one value per model. The shaded 17 to 45°F band is the frosting range: the outdoor coil can frost, and the unit pauses to defrost.

The dashed lines are example loads for a typical area of about 1,400 sq ft where winters reach 5°F: heating runs from 33,000 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 17,000 Btu/h at 95°F, at 1,000 sq ft per ton. A house in a hot climate or with large west-facing windows can need twice as much cooling. They are examples, not your building.

Calculate heating and cooling for your house

AHRI certificate 213770265 · listed by Carrier · certified Jul 25, 2025 · 3 pairings share these values

All rebate programs and their published thresholds

Certified output and power use

Certified output for the selected pairingThe four bars share one scale. The comparison is with the median of 3.5-ton central models. Heating tests run at 70°F indoors. The cooling test runs at 80°F indoors.
Outdoor temperature Certified outputBtu/h One scale vs class median COPat 5°F
5°Ffull speed 36,40010.67 kW +10% 2.26
17°Ffull speed 43,50012.75 kW +40% NR
47°Fnormal speed 46,50013.63 kW +6% NR
95°Fcooling, full load 43,50012.75 kW — NR

EER2 11.5 in that test. SEER2 20.5 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test
4.72kW
Electrical input in the 95°F cooling test
3.78kW
Seasonal average heating COP
2.64

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 42,000 Btu heat pumps

3.5-ton central models

This pairing at 5°F
36,400 Btu/h
This unit at 5°F median across its pairings
36,400 Btu/h
Median of 3.5-ton central models at 5°F
33,000 Btu/h
Models in this group
222

This unit is above 58% of them, at number 94 of 222 by heat at 5°F. The middle half of the group runs 20,000 to 40,000 Btu/h.

This size class is defined by cooling capacity, so cooling is not compared here.

Closest models by heat at 5°F

Every 42,000 Btu (3.5-ton) unit, ranked by cooling efficiency, then heating efficiency

Certified values for 25VNA448A*031*

6 pairings · 6 AHRI certificates

This pairing is the one shown above. Under all pairings, a single figure means every pairing agrees and a range means the pairing decides.

This pairingAll pairings
Heating
Heat output at 47°F normal speed 46,500 Btu/h 46,500 Btu/h
Heat output at 17°F full speed 43,500 Btu/h 43,500 Btu/h
Heat output at 5°F full speed 36,400 Btu/h 36,200–36,400 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 78%
COP at 5°F full speed 2.26 2.26
HSPF2 Region IV 9.0 9.0
Cooling
Cooling capacity at 95°F full-load test 43,500 Btu/h 43,500–44,000 Btu/h
EER2 at 95°F 11.5 11.5
SEER2 cooling season 20.5 20.5–21.0
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-410A
Compressor Variable speed
Indoor unit CAP**4821AL*+UI 2 indoor units
Furnace59MN7C100C21**22 4 furnaces
Cold-climate designation EPA's designation, as published Yes On every pairing
ENERGY STAR Most Efficient EPA's designation, as published Yes On every pairing
Where it is sold US and Canada US and Canada
Model string as certified 25VNA448A*031*

Pairings, by indoor-unit class

2 indoor units · 6 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 2 indoor units

  1. CAP**4824AL*+UI brand not stated 36,300 Btu/hat 5°F, full speed

    4 pairings, 4 with a furnace · 47°F 46,500 Btu/h · 95°F cooling 43,750 Btu/h · Cold output 78% · COP 2.26

  2. CAP**4821AL*+UI brand not stated 36,400 Btu/hat 5°F, full speed

    2 pairings, 2 with a furnace · 47°F 46,500 Btu/h · 95°F cooling 43,500 Btu/h · Cold output 78% · COP 2.26

Indoor units in the furnace paired class
Indoor unit Brand At 5°FBtu/h · full speed At 47°FBtu/h · normal speed At 95°FBtu/h · cooling Cold output% of 47°F rating COP 5°Ffull speed Cold climate Pairings
CAP**4824AL*+UI — 36,300 46,500 43,750 78% 2.26 Yes 4
CAP**4821AL*+UI — 36,400 46,500 43,500 78% 2.26 Yes 2

The share is heat output at 5°F divided by the 47°F rating.

Showing 2 of 2 indoor units

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • 25VNA448A*031* 6 pairings

Variants of the same model number

2 units in this group. Basis: identical certified values in the certified data. This grouping is our inference, not a field in the certified data.

1 of 2 shown.

Other model numbers with identical certified values

2 units share this record. Basis: identical certified values in the certified data. This grouping is our inference, not a field in the certified data.

1 of 2 shown.

What affects the price

We don't have prices. These things drive the cost.

  • The size of the unit, and the indoor equipment on the same certificate.
  • Whether existing ductwork is reused, altered, or replaced.
  • The electrical work: a circuit, a disconnect, and sometimes a panel change.
  • Refrigerant line length and how the outdoor unit is mounted.
  • Permits and inspection, which vary by municipality.
  • Removing and disposing of the old equipment.
  • Local labor rates and how busy the season is.
  • Rebates and tax credits, which change and have deadlines.

Product history

  • 25VNA448A*031* changed its certified SEER2 on 2 pairings from 21.0 to 20.5 in the certified data between September 2024 and August 2025.
  • 25VNA448A*031* changed its certified HSPF2 on 5 pairings from 9.5 to 9.0 in the certified data between September 2024 and August 2025.
  • 25VNA448A*031* changed its certified EER2 on 6 pairings from 11.7 to 11.5 in the certified data between September 2024 and August 2025.
  • 25VNA448A*031* changed its certified COP at 5°F on 6 pairings from 2.28 to 2.26 in the certified data between September 2024 and August 2025.
  • 25VNA448A*031* changed its certified heat output at 5°F on 2 pairings from 36,400 Btu/h to 36,200 Btu/h in the certified data between September 2024 and August 2025.
  • 25VNA448A*031* changed its certified heat output at 47°F on 8 pairings in the certified data between February 2025 and March 2025. The new figure is higher on all 8.
  • 25VNA448A*031* changed its certified SEER2 on 12 pairings in the certified data between September 2024 and November 2024. The new figure is lower on all 12.
  • 25VNA448A*031* changed its certified HSPF2 on 26 pairings in the certified data between September 2024 and November 2024. The new figure is lower on all 26.
  • 25VNA448A*031* changed its certified EER2 on 10 pairings in the certified data between September 2024 and November 2024. The new figure is lower on all 10.
  • 25VNA448A*031* changed its certified COP at 5°F on 41 pairings in the certified data between September 2024 and November 2024. The new figure is lower on all 41.
  • 25VNA448A*031* changed its certified heat output at 5°F on 7 pairings in the certified data between September 2024 and November 2024. The new figure is lower on all 7.
  • 25VNA448A*031* changed its certified heat output at 17°F on 6 pairings from 43,500 Btu/h to 43,000 Btu/h in the certified data between September 2024 and November 2024.
  • 25VNA448A*031* was in the certified data by September 2024.

History and definitions

History

First certified record
Most recent certified record
Measurements reported
Jul 25, 2025
Status
In the certified data

Field definitions

COP
Heat delivered for each unit of electricity used. A COP of 2.5 gives 2.5 times the heat of an electric baseboard heater.
HSPF2
Heating efficiency over a typical season. Higher uses less electricity.
SEER2
Cooling efficiency over a typical season. Higher uses less electricity.
EER2
Cooling output divided by electrical input in the 95°F full-load test, in Btu/h per watt.
Cold output
Heat output at 5°F as a percentage of the 47°F rating.
% of rating at 17°F
Heat output at 17°F as a percentage of the 47°F rating.

NR not in the certified dataNC not cold-climate certifiedSP single pairing onlyVP varies by pairing; see the pairings tableWD withdrawn since the certified data was last read

Cite or print this page

Heat Pump List, “25VNA448A*031* — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/25vna448a_st031_st