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4TWV8X24A1

4TWV8X24A1 is in the certified data.

Its certified full-speed heating output at 5°F is 12,400–13,400 Btu/h, 58–70% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

Trane · central heat pump

All 104 certified Trane models

4TWV8X24A1 is in the certified data as of Sep 19, 2026.

55 certified pairings with 42 different figures. See all

Heating at 47°F

20,200

16,800 at 17°F

12,800 at 5°F

Btu/h, certified

1.91 COP at 5°F

Cooling at 95°F

23,800

Btu/h, certified

EER2 12.5 at 95°F

SEER2 18.0

Heating and cooling by outdoor temperature

Certified heating at 5, 17, and 47°F and cooling at 95°F for 4TWV8X24A1, by outdoor temperature Heating: 12,800 Btu/h at 5°F, 16,800 Btu/h at 17°F, 20,200 Btu/h at 47°F. Cooling: 23,800 Btu/h at 95°F. The bars start at zero. Median of 2-ton central models: 19,000 Btu/h at 5°F, 19,200 Btu/h at 17°F, 24,000 Btu/h at 47°F, 24,000 Btu/h at 95°F. 0 5,000 10,000 15,000 20,000 25,000 Btu/h 12,800 5°F 16,800 17°F 20,200 47°F 23,800 95°F Outdoor temperature (°F)
  • Heating output
  • Cooling output
  • Median of 2-ton central models
  • Example heating load
  • Example cooling load
  • Frosting range, 17 to 45°F

This pairing delivers 20,200 Btu/h of heat at 47°F, 16,800 Btu/h at 17°F, and 12,800 Btu/h at 5°F, 63% of its 47°F rating. It delivers 23,800 Btu/h of cooling at 95°F. At 5°F that is 6,200 Btu/h short of the example heating load of 19,000 Btu/h; at 95°F it is 14,300 Btu/h above the example cooling load of 9,500 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 2-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 800 sq ft where winters reach 5°F: heating runs from 19,000 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 9,500 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 207526234 · listed by Trane · certified Jul 9, 2025 · 2 pairings share these values

Rebates where you live

Meets the recorded equipment thresholds of 48 programs in 28 states, provinces, or territories:Alabama (1), Arizona (1), California (2), Colorado (1), Delaware (2), Idaho (2), Illinois (1), Kansas (1), Kentucky (1), Maryland (3), Michigan (2), Minnesota (2), Mississippi (2), Nevada (1), New Hampshire (1), New Jersey (7), New York (4), North Carolina (1), Oregon (2), Pennsylvania (4), South Carolina (1), Tennessee (1), Texas (3), Utah (1), Vermont (3), Washington (2), Wisconsin (1), Newfoundland and Labrador (1).

All 48 programs by state and province

Alabama

Arizona

California

Colorado

Delaware

Idaho

Illinois

Kansas

Kentucky

Maryland

Michigan

Minnesota

Mississippi

Nevada

New Hampshire

New Jersey

New York

North Carolina

Oregon

Pennsylvania

South Carolina

Tennessee

Texas

Utah

Vermont

Washington

Wisconsin

Newfoundland and Labrador

Threshold comparisons use the unit’s median certified figures across its pairings, not the pairing selected above. Meeting these thresholds means the equipment may qualify; it does not guarantee approval. Service-area, installation, and product-list requirements also apply.

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 2-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 12,8003.75 kW −33% 1.91
17°Ffull speed 16,8004.92 kW −13% NR
47°Fnormal speed 20,2005.92 kW −16% NR
95°Fcooling, full load 23,8006.98 kW — NR

EER2 12.5 in that test. SEER2 18.0 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test
1.96kW
Electrical input in the 95°F cooling test
1.90kW
Seasonal average heating COP
2.49

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 24,000 Btu heat pumps

2-ton central models

This pairing at 5°F
12,800 Btu/h
This unit at 5°F median across its pairings
12,800 Btu/h
Median of 2-ton central models at 5°F
19,000 Btu/h
Models in this group
565

This unit is above 20% of them, at number 452 of 565 by heat at 5°F. The middle half of the group runs 16,000 to 21,600 Btu/h.

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

Among 24,000 Btu central models, each by its median certified pairing, highest first: 5°F output as a share of its 47°F rating, 434th of 565 (tied); HSPF2, 423rd of 578 (tied). Models without that figure are left out.

Similar ratings at 47°F

These central models share the nominal cooling size. Comparisons use each model’s median certified figures across pairings.

  • RHP15024B21: 21,000 Btu/h at 47°F (this model: 20,800); 11,200 Btu/h at 5°F (this model: 12,800).
  • 4TWL9024A1: 20,600 Btu/h at 47°F (this model: 20,800); HSPF2 8.7 (this model: 8.2).
  • LRP15HPK24VP: 21,400 Btu/h at 47°F (this model: 20,800); 8,300 Btu/h at 5°F (this model: 12,800).

Closest models by heat at 5°F

Every 24,000 Btu (2-ton) unit, ranked by cooling efficiency, then heating efficiency

Floor area at the cold test point

The median certified output of 12,800 Btu/h at 5°F matches the size calculator’s heating estimate for these floor areas, rounded to about 10 sq ft. Each range divides that output by the climate band’s heating rates.

Floor area by climate band and house condition
Climate bandHouse conditionBtu/h per sq ftApproximate sq ft
MildDrafty, little insulation24–42300–530
MildTypical16–26490–800
MildTight, well insulated10–18710–1,280
ColdDrafty, little insulation28–52250–460
ColdTypical18–30430–710
ColdTight, well insulated12–22580–1,070
Very coldDrafty, little insulation32–58220–400
Very coldTypical22–38340–580
Very coldTight, well insulated16–28460–800

This is an estimate, not a house-specific load calculation. Output stays at the 5°F test point for every band; it does not predict output at the band’s winter design temperature.

Certified values for 4TWV8X24A1

55 pairings · 55 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 20,200 Btu/h 18,100–22,400 Btu/h
Heat output at 17°F full speed 16,800 Btu/h 16,300–17,900 Btu/h
Heat output at 5°F full speed 12,800 Btu/h 12,400–13,400 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 63%
COP at 5°F full speed 1.91 1.60–1.95
HSPF2 Region IV 8.5 8.0–8.5
Cooling
Cooling capacity at 95°F full-load test 23,800 Btu/h 22,200–24,000 Btu/h
EER2 at 95°F 12.5 11.7–12.5
SEER2 cooling season 18.0 17.0–18.0
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-410A
Compressor Variable speed
Indoor unit 4PX*BU36BS3 7 indoor units
Furnace*UHMB080ACV3 24 furnaces
Cold-climate designation EPA's designation, as published NC NC
ENERGY STAR Most Efficient EPA's designation, as published Yes On some pairings
Where it is sold US and Canada US and Canada
Model string as certified 4TWV8X24A1

Across 55 certified pairings with 7 indoor models: heat at 5°F 12,400 Btu/h with 4PX*BU36BS3 to 13,400 Btu/h with 4TXCB003DS3; HSPF2 8.0 with 4TXCB003DS3 to 8.5 with 4PX*BU36BS3; SEER2 17.0 with 4TXCB004DS3 to 18.0 with 4PX*BU30BS3. Endpoints name one indoor model where recorded; the furnace pairing can also change the figures.

Pairings, by indoor-unit class

7 indoor units · 55 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 4 indoor units

  1. 4TXCB004DS3 brand not stated 12,600 Btu/hat 5°F, full speed

    17 pairings, 17 with a furnace · 47°F 20,200 Btu/h · 95°F cooling 23,200 Btu/h · Cold output 63% · COP 1.80

  2. 4PX*BU36BS3 brand not stated 12,750 Btu/hat 5°F, full speed

    16 pairings, 16 with a furnace · 47°F 20,200 Btu/h · 95°F cooling 23,800 Btu/h · Cold output 63% · COP 1.80

  3. 4TXCB003DS3 brand not stated 13,000 Btu/hat 5°F, full speed

    15 pairings, 15 with a furnace · 47°F 21,800 Btu/h · 95°F cooling 23,600 Btu/h · Cold output 60% · COP 1.70

  4. 4PX*BU30BS3 brand not stated 13,100 Btu/hat 5°F, full speed

    4 pairings, 4 with a furnace · 47°F 22,400 Btu/h · 95°F cooling 23,900 Btu/h · Cold output 58% · COP 1.70

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
4TXCB004DS3 — 12,600 20,200 23,200 63% 1.80 NC 17
4PX*BU36BS3 — 12,750 20,200 23,800 63% 1.80 NC 16
4TXCB003DS3 — 13,000 21,800 23,600 60% 1.70 NC 15
4PX*BU30BS3 — 13,100 22,400 23,900 58% 1.70 NC 4

Air handler · 3 indoor units

  1. TAMXB0B30V31 brand not stated 12,900 Btu/hat 5°F, full speed

    1 pairing · 47°F 20,600 Btu/h · 95°F cooling 23,800 Btu/h · Cold output 63% · COP 1.90

  2. TEM8A0B24V21+TDR brand not stated 13,200 Btu/hat 5°F, full speed

    1 pairing · 47°F 21,600 Btu/h · 95°F cooling 23,600 Btu/h · Cold output 61% · COP 1.95

  3. TEM8A0B30V31+TDR brand not stated 13,100 Btu/hat 5°F, full speed

    1 pairing · 47°F 21,600 Btu/h · 95°F cooling 23,800 Btu/h · Cold output 61% · COP 1.94

Indoor units in the air handler 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
TAMXB0B30V31 — 12,900 20,600 23,800 63% 1.90 NC 1
TEM8A0B24V21+TDR — 13,200 21,600 23,600 61% 1.95 NC 1
TEM8A0B30V31+TDR — 13,100 21,600 23,800 61% 1.94 NC 1

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

Showing 7 of 7 indoor units All 55 certified pairings

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • 4TWV8X24A1 55 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.

History and definitions

Other XV18 models by nominal cooling size: 4TWV8X36A1 (36,000 Btu), 4TWV8X48A1 (48,000 Btu), 4TWV8X60A1 (54,000 Btu).

History

First certified record
Most recent certified record
Measurements reported
Jul 9, 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, “4TWV8X24A1 — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/4twv8x24a1