Heat Pump List
Menu

Sections

Tools

THH42HAI2NAF2U23

THH42HAI2NAF2U23 is in the certified data.

Its certified full-speed heating output at 5°F is 30,000–34,000 Btu/h, 74–83% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

TCL · central heat pump

All 137 certified TCL models

THH42HAI2NAF2U23 is in the certified data as of Sep 19, 2026.

3 certified pairings with 3 different figures. See all

Heating at 47°F

45,000

29,400 at 17°F

33,400 at 5°F

Btu/h, certified

1.75 COP at 5°F

Cooling at 95°F

48,000

Btu/h, certified

EER2 9.5 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 THH42HAI2NAF2U23, by outdoor temperature Heating: 33,400 Btu/h at 5°F, 29,400 Btu/h at 17°F, 45,000 Btu/h at 47°F. Cooling: 48,000 Btu/h at 95°F. The bars start at zero. Median of 3-ton central models: 26,400 Btu/h at 5°F, 26,200 Btu/h at 17°F, 35,200 Btu/h at 47°F, 35,000 Btu/h at 95°F. 0 10,000 20,000 30,000 40,000 50,000 Btu/h 33,400 5°F 29,400 17°F 45,000 47°F 48,000 95°F Outdoor temperature (°F)
  • Heating output
  • Cooling output
  • Median of 3-ton central models
  • Example heating load
  • Example cooling load
  • Frosting range, 17 to 45°F

This pairing delivers 45,000 Btu/h of heat at 47°F, 29,400 Btu/h at 17°F, and 33,400 Btu/h at 5°F, 74% of its 47°F rating. It delivers 48,000 Btu/h of cooling at 95°F. At 5°F that is 6,900 Btu/h above the example heating load of 26,500 Btu/h; at 95°F it is 35,000 Btu/h above the example cooling load of 13,000 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-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 1,100 sq ft where winters reach 5°F: heating runs from 26,500 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 13,000 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 215374903 · listed by TCL · certified Aug 16, 2024 · 1 pairing carries these values

Rebates where you live

Meets the recorded equipment thresholds of 33 programs in 28 states, provinces, or territories:Alabama (1), Arizona (1), California (1), Connecticut (1), Idaho (2), Illinois (1), Kansas (1), Kentucky (1), Maryland (3), Massachusetts (1), Michigan (2), Minnesota (2), Mississippi (2), Nevada (1), New Hampshire (1), New Jersey (2), New York (4), North Carolina (1), Oregon (2), Rhode Island (1), South Carolina (1), Tennessee (1), Texas (1), Utah (1), Vermont (3), Washington (2), Wisconsin (1), Newfoundland and Labrador (1).

All 33 programs by state and province

Alabama

Arizona

California

Connecticut

Idaho

Illinois

Kansas

Kentucky

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Nevada

New Hampshire

New Jersey

New York

North Carolina

Oregon

Rhode Island

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 3-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 33,4009.79 kW +27% 1.75
17°Ffull speed 29,4008.62 kW +12% NR
47°Fnormal speed 45,00013.19 kW +28% NR
95°Fcooling, full load 48,00014.07 kW — NR

EER2 9.5 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
5.59kW
Electrical input in the 95°F cooling test
5.05kW
Seasonal average heating COP
2.37

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 36,000 Btu heat pumps

3-ton central models

This pairing at 5°F
33,400 Btu/h
This unit at 5°F median across its pairings
33,400 Btu/h
Median of 3-ton central models at 5°F
26,400 Btu/h
Models in this group
451

This unit is above 81% of them, at number 85 of 451 by heat at 5°F. The middle half of the group runs 18,650 to 32,000 Btu/h.

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

Among 36,000 Btu central models, each by its median certified pairing, highest first: 5°F output as a share of its 47°F rating, 170th of 451; HSPF2, 313th of 467 (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.

  • 5HPL9036A1000A: 40,000 Btu/h at 47°F (this model: 42,000); 20,000 Btu/h at 5°F (this model: 33,400).
  • MCY-MUB0368HS2P-UL: 40,000 Btu/h at 47°F (this model: 42,000); 23,600 Btu/h at 5°F (this model: 33,400).
  • CENTRAL-36-HP-C-230A00: 40,000 Btu/h at 47°F (this model: 42,000); HSPF2 9.5 (this model: 8.1).

Closest models by heat at 5°F

Every 36,000 Btu (3-ton) unit, ranked by cooling efficiency, then heating efficiency

Floor area at the cold test point

The median certified output of 33,400 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 insulation24–42800–1,390
MildTypical16–261,280–2,090
MildTight, well insulated10–181,860–3,340
ColdDrafty, little insulation28–52640–1,190
ColdTypical18–301,110–1,860
ColdTight, well insulated12–221,520–2,780
Very coldDrafty, little insulation32–58580–1,040
Very coldTypical22–38880–1,520
Very coldTight, well insulated16–281,190–2,090

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 THH42HAI2NAF2U23

3 pairings · 3 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 45,000 Btu/h 36,000–45,000 Btu/h
Heat output at 17°F full speed 29,400 Btu/h 29,400–33,000 Btu/h
Heat output at 5°F full speed 33,400 Btu/h 30,000–34,000 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 74%
COP at 5°F full speed 1.75 1.75–1.80
HSPF2 Region IV 8.1 8.1–8.5
Cooling
Cooling capacity at 95°F full-load test 48,000 Btu/h 36,000–48,000 Btu/h
EER2 at 95°F 9.5 9.0–10.0
SEER2 cooling season 15.2 15.2
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-410A
Compressor Variable speed
Indoor unit 4TXCC009DS3 3 indoor units
FurnaceA801X080CM5SD 1 furnace
Cold-climate designation EPA's designation, as published Yes On every pairing
ENERGY STAR Most Efficient EPA's designation, as published No On no pairings
Where it is sold US and Canada US and Canada
Model string as certified THH42HAI2NAF2U23

Across 3 certified pairings with 3 indoor models: heat at 5°F 30,000 Btu/h with THH36IAI2NAF2H23 to 34,000 Btu/h with THH48IAI2NAF2H23; HSPF2 8.1 with 4TXCC009DS3 to 8.5 with THH36IAI2NAF2H23; SEER2 15.2 throughout. Endpoints name one indoor model where recorded; the furnace pairing can also change the figures.

Pairings, by indoor-unit class

3 indoor units · 3 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 1 indoor unit

  1. 4TXCC009DS3 brand not stated 33,400 Btu/hat 5°F, full speed

    1 pairing, 1 with a furnace · 47°F 45,000 Btu/h · 95°F cooling 48,000 Btu/h · Cold output 74% · COP 1.75

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
4TXCC009DS3 — 33,400 45,000 48,000 74% 1.75 Yes 1

Air handler · 2 indoor units

  1. THH36IAI2NAF2H23 brand not stated 30,000 Btu/hat 5°F, full speed

    1 pairing · 47°F 36,000 Btu/h · 95°F cooling 36,000 Btu/h · Cold output 83% · COP 1.80

  2. THH48IAI2NAF2H23 brand not stated 34,000 Btu/hat 5°F, full speed

    1 pairing · 47°F 42,000 Btu/h · 95°F cooling 42,000 Btu/h · Cold output 81% · COP 1.75

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
THH36IAI2NAF2H23 — 30,000 36,000 36,000 83% 1.80 Yes 1
THH48IAI2NAF2H23 — 34,000 42,000 42,000 81% 1.75 Yes 1

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

Showing 3 of 3 indoor units

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • THH42HAI2NAF2U23 3 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 TS1 models by nominal cooling size: THH18HAI2NAF2U23 (18,000 Btu), THH24HAI2NAF2U23 (24,000 Btu), THH30HAI2NAF2U23 (30,000 Btu), THH36HAI2NAF2U23 (30,000 Btu), THH48HAI2NAF2U23 (36,000 Btu), THH60HAI2NAF2U23 (48,000 Btu).

History

First certified record
Most recent certified record
Measurements reported
Aug 16, 2024
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, “THH42HAI2NAF2U23 — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/thh42hai2naf2u23