Heat Pump List
Menu

Sections

Tools

5TWX6018A1

5TWX6018A1 is in the certified data.

Its certified full-speed heating output at 5°F is 8,700–9,000 Btu/h, 48–50% of its 47°F rating, depending on the pairing.

Trane · central heat pump

All 104 certified Trane models

5TWX6018A1 is in the certified data as of Sep 19, 2026.

6 certified pairings with 6 different figures. See all

Heating at 47°F

17,600

11,500 at 17°F

8,800 at 5°F

Btu/h, certified

2.07 COP at 5°F

Cooling at 95°F

18,000

Btu/h, certified

EER2 12.0 at 95°F

SEER2 15.2

Heating and cooling by outdoor temperature

Certified heating at 5, 17, and 47°F and cooling at 95°F for 5TWX6018A1, by outdoor temperature Heating: 8,800 Btu/h at 5°F, 11,500 Btu/h at 17°F, 17,600 Btu/h at 47°F. Cooling: 18,000 Btu/h at 95°F. The bars start at zero. Median of 1.5-ton central models: 11,200 Btu/h at 5°F, 12,600 Btu/h at 17°F, 18,000 Btu/h at 47°F, 18,000 Btu/h at 95°F. 0 5,000 10,000 15,000 20,000 Btu/h 8,800 5°F 11,500 17°F 17,600 47°F 18,000 95°F Outdoor temperature (°F)
  • Heating output
  • Cooling output
  • Median of 1.5-ton central models
  • Example heating load
  • Example cooling load
  • Frosting range, 17 to 45°F

This pairing delivers 17,600 Btu/h of heat at 47°F, 11,500 Btu/h at 17°F, and 8,800 Btu/h at 5°F, 50% of its 47°F rating. It delivers 18,000 Btu/h of cooling at 95°F. At 5°F that is 2,200 Btu/h short of the example heating load of 11,000 Btu/h; at 95°F it is 12,500 Btu/h above the example cooling load of 5,500 Btu/h.

Each bar is a separate certified test, drawn at its outdoor temperature, starting at zero. The 47°F figure is at one speed; the 17 and 5°F figures are at full speed. The short dark line on each bar is the median of 1.5-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 450 sq ft where winters reach 5°F: heating runs from 11,000 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 5,500 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 218112285 · listed by Trane · certified Mar 26, 2026 · 1 pairing carries these values

Rebates where you live

Meets the recorded equipment thresholds of 31 programs in 20 states, provinces, or territories:California (1), Colorado (1), Idaho (2), Illinois (1), Kansas (1), Maryland (3), Michigan (2), Minnesota (2), Mississippi (1), Nevada (1), New Hampshire (1), New Jersey (4), North Carolina (1), Oregon (2), Pennsylvania (3), South Carolina (1), Texas (3), Utah (1), Washington (2), Wisconsin (1).

All 31 programs by state and province

California

Colorado

Idaho

Illinois

Kansas

Maryland

Michigan

Minnesota

Mississippi

Nevada

New Hampshire

New Jersey

North Carolina

Oregon

Pennsylvania

South Carolina

Texas

Utah

Washington

Wisconsin

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 1.5-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°Fone compressor speed 8,8002.58 kW −21% 2.07
17°Fone compressor speed 11,5003.37 kW −9% NR
47°Fone compressor speed 17,6005.16 kW −2% NR
95°Fcooling, full load 18,0005.28 kW — NR

EER2 12.0 in that test. SEER2 15.2 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test
1.25kW
Electrical input in the 95°F cooling test
1.50kW
Seasonal average heating COP
2.37

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 18,000 Btu heat pumps

1.5-ton central models

This pairing at 5°F
8,800 Btu/h
This unit at 5°F median across its pairings
8,800 Btu/h
Median of 1.5-ton central models at 5°F
11,200 Btu/h
Models in this group
243

This unit is above 28% of them, at number 174 of 243 by heat at 5°F. The middle half of the group runs 8,600 to 18,000 Btu/h.

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

Among 18,000 Btu central models, each by its median certified pairing, highest first: 5°F output as a share of its 47°F rating, 185th of 243; HSPF2, 155th of 254 (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.

  • ECO-18K: 17,500 Btu/h at 47°F (this model: 17,600); HSPF2 9.55 (this model: 8.1).
  • GLZS5BA1810A: 17,800 Btu/h at 47°F (this model: 17,600); 7,800 Btu/h at 5°F (this model: 8,800).
  • J5HP5018A1000AA: 17,300 Btu/h at 47°F (this model: 17,600); 7,500 Btu/h at 5°F (this model: 8,800).

Closest models by heat at 5°F

Every 18,000 Btu (1.5-ton) unit, ranked by cooling efficiency, then heating efficiency

Floor area at the cold test point

The median certified output of 8,800 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 insulation24–42210–370
MildTypical16–26340–550
MildTight, well insulated10–18490–880
ColdDrafty, little insulation28–52170–310
ColdTypical18–30290–490
ColdTight, well insulated12–22400–730
Very coldDrafty, little insulation32–58150–280
Very coldTypical22–38230–400
Very coldTight, well insulated16–28310–550

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 5TWX6018A1

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 one speed 17,600 Btu/h 17,400–18,600 Btu/h
Heat output at 17°F full speed 11,500 Btu/h 11,400–11,900 Btu/h
Heat output at 5°F full speed 8,800 Btu/h 8,700–9,000 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 50%
COP at 5°F full speed 2.07 2.07–2.10
HSPF2 Region IV 8.1 8.0–8.1
Cooling
Cooling capacity at 95°F full-load test 18,000 Btu/h 18,000–19,200 Btu/h
EER2 at 95°F 12.0 11.7–12.0
SEER2 cooling season 15.2 15.2–16.0
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-454B
Compressor Single stage
Indoor unit 5TXCB006AS3+TSTAT 5 indoor units
FurnaceS9V2B040D3VSB 2 furnaces
Cold-climate designation EPA's designation, as published NC NC
ENERGY STAR Most Efficient EPA's designation, as published No On no pairings
Where it is sold United States United States
Model string as certified 5TWX6018A1

Across 6 certified pairings with 5 indoor models: heat at 5°F 8,700 Btu/h with 5PX*B006AS3+TSTAT to 9,000 Btu/h with 5TEM6B03AV21+TDR+TSTAT; HSPF2 8.0 with 5TEMCB02AV21+TDR+TSTAT to 8.1 with 5PX*B006AS3+TSTAT; SEER2 15.2 with 5PX*B006AS3+TSTAT to 16.0 with 5TEMCB03AV31+TDR+TSTAT. Endpoints name one indoor model where recorded; the furnace pairing can also change the figures.

Pairings, by indoor-unit class

5 indoor units · 6 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 2 indoor units

  1. 5TXCB006AS3+TSTAT brand not stated 8,750 Btu/hat 5°F, full speed

    2 pairings, 2 with a furnace · 47°F 17,500 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 50% · COP 2.07

  2. 5PX*B006AS3+TSTAT brand not stated 8,700 Btu/hat 5°F, full speed

    1 pairing, 1 with a furnace · 47°F 17,400 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 50% · COP 2.07

Indoor units in the furnace paired class
Indoor unit Brand At 5°FBtu/h · full speed At 47°FBtu/h · one speed At 95°FBtu/h · cooling Cold output% of 47°F rating COP 5°Ffull speed Cold climate Pairings
5TXCB006AS3+TSTAT — 8,750 17,500 18,000 50% 2.07 NC 2
5PX*B006AS3+TSTAT — 8,700 17,400 18,000 50% 2.07 NC 1

Air handler · 3 indoor units

  1. 5TEM6B03AV21+TDR+TSTAT brand not stated 9,000 Btu/hat 5°F, full speed

    1 pairing · 47°F 18,600 Btu/h · 95°F cooling 18,800 Btu/h · Cold output 48% · COP 2.09

  2. 5TEMCB02AV21+TDR+TSTAT brand not stated 8,900 Btu/hat 5°F, full speed

    1 pairing · 47°F 18,300 Btu/h · 95°F cooling 19,200 Btu/h · Cold output 49% · COP 2.09

  3. 5TEMCB03AV31+TDR+TSTAT brand not stated 8,900 Btu/hat 5°F, full speed

    1 pairing · 47°F 18,300 Btu/h · 95°F cooling 19,200 Btu/h · Cold output 49% · COP 2.10

Indoor units in the air handler class
Indoor unit Brand At 5°FBtu/h · full speed At 47°FBtu/h · one speed At 95°FBtu/h · cooling Cold output% of 47°F rating COP 5°Ffull speed Cold climate Pairings
5TEM6B03AV21+TDR+TSTAT — 9,000 18,600 18,800 48% 2.09 NC 1
5TEMCB02AV21+TDR+TSTAT — 8,900 18,300 19,200 49% 2.09 NC 1
5TEMCB03AV31+TDR+TSTAT — 8,900 18,300 19,200 49% 2.10 NC 1

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

Showing 5 of 5 indoor units

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • 5TWX6018A1 6 pairings

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 16 Single-Stage Heat Pump with WeatherGuard Top models by nominal cooling size: 5TWX6024A1 (24,000 Btu), 5TWX6036A1 (36,000 Btu), 5TWX6042A1 (42,000 Btu), 5TWX6048A1 (42,000 Btu).

History

First certified record
Most recent certified record
Measurements reported
Mar 26, 2026
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, “5TWX6018A1 — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/5twx6018a1