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SL22KLV-036-230A

SL22KLV-036-230A is in the certified data.

Its certified full-speed heating output at 5°F is 24,400–34,000 Btu/h, 77–105% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

Lennox · central heat pump

All 152 certified Lennox models

SL22KLV-036-230A is in the certified data as of Oct 9, 2026. SL22KLV-036-230A changed its certified heat output at 47°F on 2 pairings from 30,400 Btu/h to 31,800 Btu/h in the certified data between Oct 1, 2026 and Oct 2, 2026.

80 certified pairings with 53 different figures. See all

Heating at 47°F

30,000

29,600 at 17°F

27,200 at 5°F

Btu/h, certified

2.00 COP at 5°F

Cooling at 95°F

34,400

Btu/h, certified

EER2 12.0 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 SL22KLV-036-230A, by outdoor temperature Heating: 27,200 Btu/h at 5°F, 29,600 Btu/h at 17°F, 30,000 Btu/h at 47°F. Cooling: 34,400 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 27,200 5°F 29,600 17°F 30,000 47°F 34,400 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 30,000 Btu/h of heat at 47°F, 29,600 Btu/h at 17°F, and 27,200 Btu/h at 5°F, 91% of its 47°F rating. It delivers 34,400 Btu/h of cooling at 95°F. At 5°F that is 700 Btu/h above the example heating load of 26,500 Btu/h; at 95°F it is 21,400 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 218045626 · listed by Lennox · certified Mar 9, 2026 · 1 pairing carries these values

Rebates where you live

Meets the recorded equipment thresholds of 70 programs in 37 states, provinces, or territories:Alabama (1), Arizona (1), California (3), Colorado (2), Connecticut (3), Delaware (2), Idaho (2), Illinois (1), Kansas (1), Kentucky (1), Maryland (3), Massachusetts (3), Michigan (2), Minnesota (3), Mississippi (2), Nevada (1), New Hampshire (3), New Jersey (7), New York (4), North Carolina (1), Oregon (2), Pennsylvania (4), Rhode Island (3), South Carolina (1), Tennessee (1), Texas (3), Utah (1), Vermont (3), Washington (3), Wisconsin (1), British Columbia (3), Manitoba (1), New Brunswick (1), Newfoundland and Labrador (1), Nova Scotia (2), Ontario (1), Yukon (2).

All 70 programs by state and province

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Newfoundland and Labrador

Nova Scotia

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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 27,2007.97 kW +3% 2.00
17°Ffull speed 29,6008.67 kW +13% NR
47°Fnormal speed 30,0008.79 kW −15% NR
95°Fcooling, full load 34,40010.08 kW — NR

EER2 12.0 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
3.99kW
Electrical input in the 95°F cooling test
2.87kW
Seasonal average heating COP
2.34

These exclude backup resistance heat.

Updated Oct 9, 2026 · Methodology

How it compares with other 36,000 Btu heat pumps

3-ton central models

This pairing at 5°F
27,200 Btu/h
This unit at 5°F median across its pairings
27,200 Btu/h
Median of 3-ton central models at 5°F
26,400 Btu/h
Models in this group
451

This unit is above 55% of them, at number 201 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, 99th of 451; HSPF2, 146th 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.

  • 5TWR5036A1: The same 31,400 Btu/h rating at 47°F; 17,300 Btu/h at 5°F (this model: 27,200).
  • A5HP5036A1: The same 31,400 Btu/h rating at 47°F; 17,400 Btu/h at 5°F (this model: 27,200).
  • YH536E2S11: The same 31,400 Btu/h rating at 47°F; 17,600 Btu/h at 5°F (this model: 27,200).

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 27,200 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 insulation24–42650–1,130
MildTypical16–261,050–1,700
MildTight, well insulated10–181,510–2,720
ColdDrafty, little insulation28–52520–970
ColdTypical18–30910–1,510
ColdTight, well insulated12–221,240–2,270
Very coldDrafty, little insulation32–58470–850
Very coldTypical22–38720–1,240
Very coldTight, well insulated16–28970–1,700

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 SL22KLV-036-230A

80 pairings · 80 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 30,000 Btu/h 30,000–32,800 Btu/h
Heat output at 17°F full speed 29,600 Btu/h 26,600–33,800 Btu/h
Heat output at 5°F full speed 27,200 Btu/h 24,400–34,000 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 91%
COP at 5°F full speed 2.00 1.84–2.42
HSPF2 Region IV 8.0 8.0–10.5
Cooling
Cooling capacity at 95°F full-load test 34,400 Btu/h 33,000–35,600 Btu/h
EER2 at 95°F 12.0 11.2–13.6
SEER2 cooling season 18.0 16.5–20.5
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-454B
Compressor Variable speed
Indoor unit CK40[C,U]T-49C-**+TDR 10 indoor units
FurnaceEL297UH090XV36C* 33 furnaces
Cold-climate designation EPA's designation, as published NC On some pairings
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 SL22KLV-036-230A**

Across 80 certified pairings with 10 indoor models: heat at 5°F 24,400 Btu/h with CK40[C,U]T-60D-**+TDR to 34,000 Btu/h with CBK48MVT-042-230-**; HSPF2 8.0 with CK40CT-49C-**+DF KIT to 10.5 with CBK48MVT-060-230-**; SEER2 16.5 with CK40HT-60D-**+TDR to 20.5 with CK40HT-51/61C-**+TDR. Endpoints name one indoor model where recorded; the furnace pairing can also change the figures.

Pairings, by indoor-unit class

10 indoor units · 80 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 7 indoor units

  1. CK40[C,U]T-49C-**+TDR brand not stated 31,600 Btu/hat 5°F, full speed

    19 pairings, 19 with a furnace · 47°F 31,400 Btu/h · 95°F cooling 35,200 Btu/h · Cold output 101% · COP 2.04

  2. CK40HT-51/61C-**+TDR brand not stated 26,600 Btu/hat 5°F, full speed

    16 pairings, 16 with a furnace · 47°F 31,200 Btu/h · 95°F cooling 35,400 Btu/h · Cold output 85% · COP 2.08

  3. CK40[C,U]T-60C-**+TDR brand not stated 26,600 Btu/hat 5°F, full speed

    15 pairings, 15 with a furnace · 47°F 32,000 Btu/h · 95°F cooling 35,000 Btu/h · Cold output 83% · COP 2.12

  4. CK40HT-60D-**+TDR brand not stated 30,200 Btu/hat 5°F, full speed

    9 pairings, 9 with a furnace · 47°F 32,600 Btu/h · 95°F cooling 34,400 Btu/h · Cold output 92% · COP 2.16

  5. CK40CT-49C-**+DF KIT brand not stated 31,600 Btu/hat 5°F, full speed

    8 pairings, 8 with a furnace · 47°F 31,400 Btu/h · 95°F cooling 33,000 Btu/h · Cold output 101% · COP 1.84

  6. CK40[C,U]T-60D-**+TDR brand not stated 24,400 Btu/hat 5°F, full speed

    6 pairings, 6 with a furnace · 47°F 31,500 Btu/h · 95°F cooling 33,600 Btu/h · Cold output 78% · COP 2.14

  7. CK40HT-42B-**+TDR brand not stated 31,300 Btu/hat 5°F, full speed

    4 pairings, 4 with a furnace · 47°F 31,500 Btu/h · 95°F cooling 35,400 Btu/h · Cold output 99% · COP 2.04

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
CK40[C,U]T-49C-**+TDR — 31,600 31,400 35,200 101% 2.04 Yes 19
CK40HT-51/61C-**+TDR — 26,600 31,200 35,400 85% 2.08 Yes 16
CK40[C,U]T-60C-**+TDR — 26,600 32,000 35,000 83% 2.12 Yes 15
CK40HT-60D-**+TDR — 30,200 32,600 34,400 92% 2.16 Yes 9
CK40CT-49C-**+DF KIT — 31,600 31,400 33,000 101% 1.84 Yes 8
CK40[C,U]T-60D-**+TDR — 24,400 31,500 33,600 78% 2.14 Yes 6
CK40HT-42B-**+TDR — 31,300 31,500 35,400 99% 2.04 Yes 4

Air handler · 3 indoor units

  1. CBK48MVT-042-230-** brand not stated 34,000 Btu/hat 5°F, full speed

    1 pairing · 47°F 32,800 Btu/h · 95°F cooling 35,200 Btu/h · Cold output 104% · COP 2.12

  2. CBK48MVT-048-230-** brand not stated 30,400 Btu/hat 5°F, full speed

    1 pairing · 47°F 31,600 Btu/h · 95°F cooling 35,200 Btu/h · Cold output 96% · COP 2.18

  3. CBK48MVT-060-230-** brand not stated 33,200 Btu/hat 5°F, full speed

    1 pairing · 47°F 32,600 Btu/h · 95°F cooling 35,200 Btu/h · Cold output 102% · COP 2.42

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
CBK48MVT-042-230-** — 34,000 32,800 35,200 104% 2.12 Yes 1
CBK48MVT-048-230-** — 30,400 31,600 35,200 96% 2.18 Yes 1
CBK48MVT-060-230-** — 33,200 32,600 35,200 102% 2.42 Yes 1

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

Showing 10 of 10 indoor units All 80 certified pairings

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • SL22KLV-036-230A** 80 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.

Product history

  • SL22KLV-036-230A changed its certified heat output at 47°F on 2 pairings from 30,400 Btu/h to 31,800 Btu/h in the certified data between Oct 1, 2026 and Oct 2, 2026.
  • SL22KLV-036-230A changed its certified HSPF2 on AHRI certificate 217476480 from 8.0 to 8.1 in the certified data between August 2025 and September 2026.
  • SL22KLV-036-230A changed its certified heat output at 47°F on 19 pairings in the certified data between June 2025 and September 2026. The new figure is lower on all 19.
  • SL22KLV-036-230A changed its certified SEER2 on AHRI certificate 216776075 from 18.0 to 18.5 in the certified data between June 2025 and August 2025.
  • SL22KLV-036-230A changed its certified HSPF2 on AHRI certificate 216776075 from 9.0 to 8.5 in the certified data between June 2025 and August 2025.
  • SL22KLV-036-230A changed its certified COP at 5°F on AHRI certificate 216776075 from 2.04 to 2.00 in the certified data between June 2025 and August 2025.
  • SL22KLV-036-230A changed its certified heat output at 5°F on AHRI certificate 216776075 from 31,600 Btu/h to 27,600 Btu/h in the certified data between June 2025 and August 2025.
  • SL22KLV-036-230A changed its certified heat output at 47°F on at least 2 pairings in the certified data between June 2025 and August 2025. The new figure is lower on all 2.
  • SL22KLV-036-230A changed its certified heat output at 17°F on AHRI certificate 216776075 from 33,800 Btu/h to 30,000 Btu/h in the certified data between June 2025 and August 2025.
  • SL22KLV-036-230A first appeared in the certified data between February 2025 and March 2025.

History and definitions

Other DAVE LENNOX SIGNATURE SL22KLV SERIES models by nominal cooling size: SL22KLV-024-230A (24,000 Btu), SL22KLV-048-230A (42,000 Btu), SL22KLV-060-230A (54,000 Btu).

History

First certified record
Most recent certified record
Measurements reported
Mar 9, 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, “SL22KLV-036-230A — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/sl22klv-036-230a