Heat Pump List
Menu

Sections

Tools

YH2F42TB21

YH2F42TB21 is in the certified data.

Its certified full-speed heating output at 5°F is 18,400–22,600 Btu/h, 46–57% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

York · central heat pump

YH2F42TB21 is in the certified data as of Sep 19, 2026.

449 certified pairings with 174 different figures. See all

Heating at 47°F

38,500

25,200 at 17°F

20,800 at 5°F

Btu/h, certified

2.28 COP at 5°F

Cooling at 95°F

40,500

Btu/h, certified

EER2 12.0 at 95°F

SEER2 16.0

Heating and cooling by outdoor temperature

Certified heating at 5, 17, and 47°F and cooling at 95°F for YH2F42TB21, by outdoor temperature Heating: 20,800 Btu/h at 5°F, 25,200 Btu/h at 17°F, 38,500 Btu/h at 47°F. Cooling: 40,500 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 20,800 5°F 25,200 17°F 38,500 47°F 40,500 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 38,500 Btu/h of heat at 47°F, 25,200 Btu/h at 17°F, and 20,800 Btu/h at 5°F, 54% of its 47°F rating. It delivers 40,500 Btu/h of cooling at 95°F. At 5°F that is 12,200 Btu/h short of the example heating load of 33,000 Btu/h; at 95°F it is 23,500 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 high stage; 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 212474960 · listed by York · certified Jul 7, 2026 · 9 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°Fone compressor speed 20,8006.10 kW −37% 2.28
17°Fone compressor speed 25,2007.39 kW −19% NR
47°Fone compressor speed 38,50011.28 kW −13% NR
95°Fcooling, full load 40,50011.87 kW — NR

EER2 12.0 in that test. SEER2 16.0 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test
2.67kW
Electrical input in the 95°F cooling test
3.38kW
Seasonal average heating COP
2.37

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
20,800 Btu/h
This unit at 5°F median across its pairings
20,800 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 36% of them, at number 143 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 YH2F42TB21

449 pairings · 449 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 high stage 38,500 Btu/h 37,400–41,000 Btu/h
Heat output at 17°F full speed 25,200 Btu/h 24,200–26,600 Btu/h
Heat output at 5°F full speed 20,800 Btu/h 18,400–22,600 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 54%
COP at 5°F full speed 2.28 1.98–2.42
HSPF2 Region IV 8.1 7.8–8.1
Cooling
Cooling capacity at 95°F full-load test 40,500 Btu/h 39,500–42,000 Btu/h
EER2 at 95°F 12.0 11.7–12.0
SEER2 cooling season 16.0 15.2–16.0
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-410A
Compressor Two-stage
Indoor unit XAFD60GXXN1+TXV 78 indoor units
FurnaceY81E080C16SMPS1 94 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 US and Canada US and Canada
Model string as certified YH2F42TB21

Pairings, by indoor-unit class

78 indoor units · 449 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 10 indoor units

  1. XAHC48FBCN1 brand not stated 20,200 Btu/hat 5°F, full speed

    79 pairings, 79 with a furnace · 47°F 40,000 Btu/h · 95°F cooling 40,000 Btu/h · Cold output 51% · COP 2.12

  2. XAFC48FBCN1 brand not stated 19,700 Btu/hat 5°F, full speed

    56 pairings, 56 with a furnace · 47°F 40,000 Btu/h · 95°F cooling 40,500 Btu/h · Cold output 49% · COP 2.04

  3. XAHD48FBCN1 brand not stated 20,400 Btu/hat 5°F, full speed

    54 pairings, 54 with a furnace · 47°F 40,000 Btu/h · 95°F cooling 40,500 Btu/h · Cold output 51% · COP 2.13

  4. XAFD48FBCN1 brand not stated 19,800 Btu/hat 5°F, full speed

    53 pairings, 53 with a furnace · 47°F 40,000 Btu/h · 95°F cooling 40,500 Btu/h · Cold output 50% · COP 2.04

  5. XAFC48FXXN1+TXV brand not stated 19,850 Btu/hat 5°F, full speed

    44 pairings, 44 with a furnace · 47°F 40,000 Btu/h · 95°F cooling 40,500 Btu/h · Cold output 50% · COP 2.06

  6. XAFC60GBCN1 brand not stated 21,200 Btu/hat 5°F, full speed

    21 pairings, 21 with a furnace · 47°F 38,500 Btu/h · 95°F cooling 40,500 Btu/h · Cold output 55% · COP 2.26

  7. XAHC60GBCN1 brand not stated 22,000 Btu/hat 5°F, full speed

    20 pairings, 20 with a furnace · 47°F 40,000 Btu/h · 95°F cooling 41,000 Btu/h · Cold output 55% · COP 2.34

  8. XAFD60GBCN1 brand not stated 21,000 Btu/hat 5°F, full speed

    19 pairings, 19 with a furnace · 47°F 38,500 Btu/h · 95°F cooling 40,500 Btu/h · Cold output 55% · COP 2.28

  9. XAFD60GXXN1+TXV brand not stated 21,000 Btu/hat 5°F, full speed

    18 pairings, 18 with a furnace · 47°F 38,500 Btu/h · 95°F cooling 40,500 Btu/h · Cold output 55% · COP 2.28

  10. XAHD60GBCN1 brand not stated 22,000 Btu/hat 5°F, full speed

    17 pairings, 17 with a furnace · 47°F 40,000 Btu/h · 95°F cooling 41,000 Btu/h · Cold output 55% · COP 2.34

Indoor units in the furnace paired class
Indoor unit Brand At 5°FBtu/h · full speed At 47°FBtu/h · high stage At 95°FBtu/h · cooling Cold output% of 47°F rating COP 5°Ffull speed Cold climate Pairings
XAHC48FBCN1 — 20,200 40,000 40,000 51% 2.12 NC 79
XAFC48FBCN1 — 19,700 40,000 40,500 49% 2.04 NC 56
XAHD48FBCN1 — 20,400 40,000 40,500 51% 2.13 NC 54
XAFD48FBCN1 — 19,800 40,000 40,500 50% 2.04 NC 53
XAFC48FXXN1+TXV — 19,850 40,000 40,500 50% 2.06 NC 44
XAFC60GBCN1 — 21,200 38,500 40,500 55% 2.26 NC 21
XAHC60GBCN1 — 22,000 40,000 41,000 55% 2.34 NC 20
XAFD60GBCN1 — 21,000 38,500 40,500 55% 2.28 NC 19
XAFD60GXXN1+TXV — 21,000 38,500 40,500 55% 2.28 NC 18
XAHD60GBCN1 — 22,000 40,000 41,000 55% 2.34 NC 17

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

Showing 10 of 78 indoor units All 449 certified pairings

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • YH2F42TB21 449 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.

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

History

First certified record
Most recent certified record
Measurements reported
Jul 7, 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, “YH2F42TB21 — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/yh2f42tb21