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YH536E2S11

YH536E2S11 is in the certified data.

Its certified full-speed heating output at 5°F is 17,000–18,400 Btu/h, 53–59% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

York · central heat pump

YH536E2S11 is in the certified data as of Sep 19, 2026. YH536E2S11 changed its certified HSPF2 on 5 pairings from 7.8 to 8.1 in the certified data between March 2025 and May 2025.

304 certified pairings with 80 different figures. See all

Heating at 47°F

32,000

21,000 at 17°F

17,600 at 5°F

Btu/h, certified

2.00 COP at 5°F

Cooling at 95°F

33,800

Btu/h, certified

EER2 11.0 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 YH536E2S11, by outdoor temperature Heating: 17,600 Btu/h at 5°F, 21,000 Btu/h at 17°F, 32,000 Btu/h at 47°F. Cooling: 33,800 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 Btu/h 17,600 5°F 21,000 17°F 32,000 47°F 33,800 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 32,000 Btu/h of heat at 47°F, 21,000 Btu/h at 17°F, and 17,600 Btu/h at 5°F, 55% of its 47°F rating. It delivers 33,800 Btu/h of cooling at 95°F. At 5°F that is 8,900 Btu/h short of the example heating load of 26,500 Btu/h; at 95°F it is 20,800 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 high stage; 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 214426908 · listed by York · certified Jul 17, 2026 · 8 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-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 17,6005.16 kW −33% 2.00
17°Fone compressor speed 21,0006.15 kW −20% NR
47°Fone compressor speed 32,0009.38 kW −9% NR
95°Fcooling, full load 33,8009.91 kW — NR

EER2 11.0 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
2.58kW
Electrical input in the 95°F cooling test
3.07kW
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
17,600 Btu/h
This unit at 5°F median across its pairings
17,600 Btu/h
Median of 3-ton central models at 5°F
26,400 Btu/h
Models in this group
451

This unit is above 17% of them, at number 375 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.

Closest models by heat at 5°F

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

Certified values for YH536E2S11

304 pairings · 304 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 32,000 Btu/h 30,600–32,800 Btu/h
Heat output at 17°F full speed 21,000 Btu/h 20,400–22,000 Btu/h
Heat output at 5°F full speed 17,600 Btu/h 17,000–18,400 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 55%
COP at 5°F full speed 2.00 2.00–2.44
HSPF2 Region IV 8.1 7.8–8.1
Cooling
Cooling capacity at 95°F full-load test 33,800 Btu/h 32,400–35,000 Btu/h
EER2 at 95°F 11.0 10.0–12.0
SEER2 cooling season 15.2 15.2–16.0
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-454B
Compressor Two-stage
Indoor unit CTF48C5CFS1 97 indoor units
FurnaceY81E080C20SMPS1 42 furnaces
Cold-climate designation EPA's designation, as published NC NC
ENERGY STAR Most Efficient EPA's designation, as published No On some pairings
Where it is sold US and Canada US and Canada
Model string as certified YH536E2S11

Pairings, by indoor-unit class

97 indoor units · 304 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 10 indoor units

  1. CTM48C5CFS1 brand not stated 17,800 Btu/hat 5°F, full speed

    37 pairings, 37 with a furnace · 47°F 31,200 Btu/h · 95°F cooling 34,000 Btu/h · Cold output 56% · COP 2.00

  2. CTF48C5CFS1 brand not stated 17,500 Btu/hat 5°F, full speed

    30 pairings, 30 with a furnace · 47°F 31,400 Btu/h · 95°F cooling 33,500 Btu/h · Cold output 55% · COP 2.00

  3. CTU48C5XFS1+TXV brand not stated 17,500 Btu/hat 5°F, full speed

    29 pairings, 29 with a furnace · 47°F 31,400 Btu/h · 95°F cooling 33,600 Btu/h · Cold output 55% · COP 2.00

  4. CTM48C5CFS2 brand not stated 17,900 Btu/hat 5°F, full speed

    25 pairings, 25 with a furnace · 47°F 31,200 Btu/h · 95°F cooling 34,200 Btu/h · Cold output 57% · COP 2.38

  5. CTF48C5CFS2 brand not stated 17,700 Btu/hat 5°F, full speed

    19 pairings, 19 with a furnace · 47°F 31,800 Btu/h · 95°F cooling 33,800 Btu/h · Cold output 55% · COP 2.00

  6. CTU48C5XFS2+TXV brand not stated 17,700 Btu/hat 5°F, full speed

    19 pairings, 19 with a furnace · 47°F 31,800 Btu/h · 95°F cooling 33,800 Btu/h · Cold output 55% · COP 2.00

  7. CTM36C5CDS1 brand not stated 17,800 Btu/hat 5°F, full speed

    15 pairings, 15 with a furnace · 47°F 30,800 Btu/h · 95°F cooling 32,600 Btu/h · Cold output 57% · COP 2.40

  8. CTM36C5CDS2 brand not stated 17,800 Btu/hat 5°F, full speed

    15 pairings, 15 with a furnace · 47°F 30,800 Btu/h · 95°F cooling 32,600 Btu/h · Cold output 57% · COP 2.40

  9. CTF36C5CDS1 brand not stated 17,800 Btu/hat 5°F, full speed

    14 pairings, 14 with a furnace · 47°F 32,000 Btu/h · 95°F cooling 32,700 Btu/h · Cold output 55% · COP 2.00

  10. CTF36C5CDS2 brand not stated 17,800 Btu/hat 5°F, full speed

    14 pairings, 14 with a furnace · 47°F 32,000 Btu/h · 95°F cooling 32,700 Btu/h · Cold output 55% · COP 2.00

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
CTM48C5CFS1 — 17,800 31,200 34,000 56% 2.00 NC 37
CTF48C5CFS1 — 17,500 31,400 33,500 55% 2.00 NC 30
CTU48C5XFS1+TXV — 17,500 31,400 33,600 55% 2.00 NC 29
CTM48C5CFS2 — 17,900 31,200 34,200 57% 2.38 NC 25
CTF48C5CFS2 — 17,700 31,800 33,800 55% 2.00 NC 19
CTU48C5XFS2+TXV — 17,700 31,800 33,800 55% 2.00 NC 19
CTM36C5CDS1 — 17,800 30,800 32,600 57% 2.40 NC 15
CTM36C5CDS2 — 17,800 30,800 32,600 57% 2.40 NC 15
CTF36C5CDS1 — 17,800 32,000 32,700 55% 2.00 NC 14
CTF36C5CDS2 — 17,800 32,000 32,700 55% 2.00 NC 14

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

Showing 10 of 97 indoor units All 304 certified pairings

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • YH536E2S11 304 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.

Product history

  • YH536E2S11 changed its certified HSPF2 on 5 pairings from 7.8 to 8.1 in the certified data between March 2025 and May 2025.
  • YH536E2S11 changed its certified EER2 on 13 pairings in the certified data between March 2025 and May 2025. The new figure is higher on 6 and lower on 7.
  • YH536E2S11 changed its certified cooling capacity at 95°F on 17 pairings in the certified data between March 2025 and May 2025. The new figure is higher on 13 and lower on 4.
  • YH536E2S11 changed its certified heat output at 5°F on 4 pairings in the certified data between March 2025 and May 2025. The new figure is higher on all 4.
  • YH536E2S11 changed its certified heat output at 47°F on 20 pairings in the certified data between March 2025 and May 2025. The new figure is higher on 4 and lower on 16.
  • YH536E2S11 changed its certified heat output at 17°F on 4 pairings in the certified data between March 2025 and May 2025. The new figure is higher on all 4.
  • YH536E2S11 was in the certified data by September 2024.

History and definitions

History

First certified record
Most recent certified record
Measurements reported
Jul 17, 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, “YH536E2S11 — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/yh536e2s11