Heat Pump List
Menu

Sections

Tools

ML15KSPV-024-230A

ML15KSPV-024-230A is in the certified data.

Its certified full-speed heating output at 5°F is 17,900–18,900 Btu/h, 74–78% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

Lennox · central heat pump

ML15KSPV-024-230A is in the certified data as of Sep 19, 2026.

110 certified pairings with 96 different figures. See all

Heating at 47°F

23,600

18,100 at 17°F

18,200 at 5°F

Btu/h, certified

1.80 COP at 5°F

Cooling at 95°F

23,400

Btu/h, certified

EER2 9.5 at 95°F

SEER2 16.4

Heating and cooling by outdoor temperature

Certified heating at 5, 17, and 47°F and cooling at 95°F for ML15KSPV-024-230A, by outdoor temperature Heating: 18,200 Btu/h at 5°F, 18,100 Btu/h at 17°F, 23,600 Btu/h at 47°F. Cooling: 23,400 Btu/h at 95°F. The bars start at zero. Median of 2-ton central models: 19,000 Btu/h at 5°F, 19,200 Btu/h at 17°F, 24,000 Btu/h at 47°F, 24,000 Btu/h at 95°F. 0 5,000 10,000 15,000 20,000 25,000 Btu/h 18,200 5°F 18,100 17°F 23,600 47°F 23,400 95°F Outdoor temperature (°F)
  • Heating output
  • Cooling output
  • Median of 2-ton central models
  • Example heating load
  • Example cooling load
  • Frosting range, 17 to 45°F

This pairing delivers 23,600 Btu/h of heat at 47°F, 18,100 Btu/h at 17°F, and 18,200 Btu/h at 5°F, 77% of its 47°F rating. It delivers 23,400 Btu/h of cooling at 95°F. At 5°F that is 800 Btu/h short of the example heating load of 19,000 Btu/h; at 95°F it is 13,900 Btu/h above the example cooling load of 9,500 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 2-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 800 sq ft where winters reach 5°F: heating runs from 19,000 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 9,500 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 218617593 · listed by Lennox · certified Jun 29, 2026 · 3 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 2-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 18,2005.33 kW −4% 1.80
17°Ffull speed 18,1005.30 kW −6% NR
47°Fnormal speed 23,6006.92 kW −2% NR
95°Fcooling, full load 23,4006.86 kW — NR

EER2 9.5 in that test. SEER2 16.4 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test
2.96kW
Electrical input in the 95°F cooling test
2.46kW
Seasonal average heating COP
2.40

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 24,000 Btu heat pumps

2-ton central models

This pairing at 5°F
18,200 Btu/h
This unit at 5°F median across its pairings
18,200 Btu/h
Median of 2-ton central models at 5°F
19,000 Btu/h
Models in this group
565

This unit is above 41% of them, at number 336 of 565 by heat at 5°F. The middle half of the group runs 16,000 to 21,600 Btu/h.

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

Closest models by heat at 5°F

Every 24,000 Btu (2-ton) unit, ranked by cooling efficiency, then heating efficiency

Certified values for ML15KSPV-024-230A

110 pairings · 110 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 23,600 Btu/h 23,400–25,000 Btu/h
Heat output at 17°F full speed 18,100 Btu/h 17,900–18,900 Btu/h
Heat output at 5°F full speed 18,200 Btu/h 17,900–18,900 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 77%
COP at 5°F full speed 1.80 1.80–1.90
HSPF2 Region IV 8.2 8.1–8.9
Cooling
Cooling capacity at 95°F full-load test 23,400 Btu/h 22,600–24,400 Btu/h
EER2 at 95°F 9.5 9.0–9.7
SEER2 cooling season 16.4 15.2–16.8
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-454B
Compressor Variable speed
Indoor unit CK40HT-24B-**+TDR 20 indoor units
FurnaceSL297UH040NV36B* 44 furnaces
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 ML15KSPV-024-230A**

Pairings, by indoor-unit class

20 indoor units · 110 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 9 indoor units

  1. CK40[C,U]T-36B-**+TDR brand not stated 18,100 Btu/hat 5°F, full speed

    20 pairings, 20 with a furnace · 47°F 23,600 Btu/h · 95°F cooling 23,500 Btu/h · Cold output 77% · COP 1.80

  2. CK40HT-30B-**+TDR brand not stated 18,200 Btu/hat 5°F, full speed

    17 pairings, 17 with a furnace · 47°F 23,600 Btu/h · 95°F cooling 23,400 Btu/h · Cold output 77% · COP 1.80

  3. CK40HT-24B-**+TDR brand not stated 18,200 Btu/hat 5°F, full speed

    15 pairings, 15 with a furnace · 47°F 23,600 Btu/h · 95°F cooling 23,400 Btu/h · Cold output 77% · COP 1.80

  4. CK40[C,U]T-36A-**+TDR brand not stated 18,100 Btu/hat 5°F, full speed

    14 pairings, 14 with a furnace · 47°F 23,600 Btu/h · 95°F cooling 23,600 Btu/h · Cold output 77% · COP 1.80

  5. CK40[C,U]T-24B-**+TDR brand not stated 18,300 Btu/hat 5°F, full speed

    12 pairings, 12 with a furnace · 47°F 23,600 Btu/h · 95°F cooling 23,000 Btu/h · Cold output 77% · COP 1.80

  6. CK40HT-30A-**+TDR brand not stated 17,900 Btu/hat 5°F, full speed

    11 pairings, 11 with a furnace · 47°F 23,600 Btu/h · 95°F cooling 23,600 Btu/h · Cold output 76% · COP 1.80

  7. CK40DT-24B-**+TDR brand not stated 18,200 Btu/hat 5°F, full speed

    6 pairings, 6 with a furnace · 47°F 23,700 Btu/h · 95°F cooling 22,900 Btu/h · Cold output 77% · COP 1.80

  8. CK40HT-24A-**+TDR brand not stated 18,250 Btu/hat 5°F, full speed

    2 pairings, 2 with a furnace · 47°F 23,600 Btu/h · 95°F cooling 22,800 Btu/h · Cold output 77% · COP 1.80

  9. CK40[C,U]T-24A-**+TDR brand not stated 18,200 Btu/hat 5°F, full speed

    2 pairings, 2 with a furnace · 47°F 23,600 Btu/h · 95°F cooling 22,800 Btu/h · Cold output 77% · COP 1.80

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-36B-**+TDR — 18,100 23,600 23,500 77% 1.80 Yes 20
CK40HT-30B-**+TDR — 18,200 23,600 23,400 77% 1.80 Yes 17
CK40HT-24B-**+TDR — 18,200 23,600 23,400 77% 1.80 Yes 15
CK40[C,U]T-36A-**+TDR — 18,100 23,600 23,600 77% 1.80 Yes 14
CK40[C,U]T-24B-**+TDR — 18,300 23,600 23,000 77% 1.80 Yes 12
CK40HT-30A-**+TDR — 17,900 23,600 23,600 76% 1.80 Yes 11
CK40DT-24B-**+TDR — 18,200 23,700 22,900 77% 1.80 Yes 6
CK40HT-24A-**+TDR — 18,250 23,600 22,800 77% 1.80 Yes 2
CK40[C,U]T-24A-**+TDR — 18,200 23,600 22,800 77% 1.80 Yes 2

Air handler · 1 indoor unit

  1. CBK43UHET-024-DV** brand not stated 18,600 Btu/hat 5°F, full speed

    1 pairing · 47°F 25,000 Btu/h · 95°F cooling 23,800 Btu/h · Cold output 74% · COP 1.90

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
CBK43UHET-024-DV** — 18,600 25,000 23,800 74% 1.90 Yes 1

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

Showing 10 of 20 indoor units All 110 certified pairings

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • ML15KSPV-024-230A** 110 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

History

First certified record
Most recent certified record
Measurements reported
Jun 29, 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, “ML15KSPV-024-230A — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/ml15kspv-024-230a