HVAC Rated

1.5-ton central heat pump · ML15KSPV Series

Lennox ML15KSPV-018-230A

Average cooling and heating efficiency for a 1.5-ton central heat pump, and certified for cold climates.

Ranks #71 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $559 a year to run in a mixed climate like Atlanta.

SEER2
17.2 Cooling efficiency over a season
Average · beats 54%
HSPF2
8.8 Heating efficiency over a season
Average · beats 49%
EER2
10.6 Cooling efficiency on a 95°F day
Below average · beats 19%
Heat at 5°F
14,000 BTU/h74% of its 47°F output
Below average · beats 39%

A good fit if…

  • Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 14,000 BTU/h at 5°F.
  • You want steady temperatures and quiet running - the compressor varies its speed.
  • You want a choice of indoor units - 83 certified pairings.

Think twice if…

  • Nothing stands out - its ratings have no weak spot for its class.

Calculate my running cost

Details

Specifications1.5 ton, R-454B
General
BrandLennox
Also sold asGE Appliances, Haier
Outdoor unit modelML15KSPV-018-230A
SeriesML15KSPV Series
TypeCentral heat pump
Nominal size1.5 ton
CompressorVariable-speed units run longer at low powerContinuously variable
RefrigerantR-454B
Connected (smart) capableNo
On the market sinceFebruary 6, 2026
Last certifiedJuly 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better17.2 (range 15.2-17.2)
EER2Efficiency at 95°F outdoors10.2-11.0
Cooling capacity17,900-18,900 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better8.1-8.8
Capacity at 47°F18,000-18,600 BTU/h
Capacity at 17°F15,000-15,600 BTU/h
Capacity at 5°F12,600-14,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater1.80-2.00
ENERGY STAR cold climateYes
Heating output as it gets colder74% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with CK40HT-30A-**+TDR at the standard test temperatures, in BTU/h:

Certified matchups83 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 83 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unitFurnaceSEER2EER2HSPF2Heat @5°FAHRI ref.
CK40HT-30A-**+TDR · cold climateEL280UH045E36A*17.210.68.813,700218617523
CK40[C,U]T-24B-**+TDR · cold climateML193UH030XE36B*17.110.28.514,000218617538
CK40HT-24B-**+TDR · cold climateEL280UH090E36B*16.810.68.413,900218617554
CK40HT-30B-**+TDR · cold climateEL280UH090E36B*16.710.68.413,900218617565
CK40HT-30A-**+TDR · cold climateML180UH045V36A*16.610.58.613,800218617563
CK40HT-30A-**+TDR · cold climateML180UH030V36A*16.610.68.613,700218617562
CK40HT-30B-**+TDR · cold climateSLP99UH070XV36B*16.610.58.413,900218617529
CK40HT-24B-**+TDR · cold climateSLP99UH070XV36B*16.610.58.413,900218617520
CK40HT-30A-**+TDR · cold climateEL280UH070XE36A*16.510.58.613,800218617561
CK40HT-30A-**+TDR · cold climateEL280UH070E36A*16.510.58.613,800218617524
CK40HT-30B-**+TDR · cold climateML180UH070V36B*16.510.58.413,800218617568
CK40HT-24B-**+TDR · cold climateML193UH030XE36B*16.510.48.413,900218617558
CK40[C,U]T-24A-**+TDR · cold climateML180UH045V36A*16.510.38.413,900218617534
CK40[C,U]T-24A-**+TDR · cold climateML180UH030V36A*16.510.48.413,900218617533
CK40[C,U]T-30A-**+TDR · cold climateML180UH030V36A*16.510.58.313,900218617542
CBK48MVT-018/024-230- · cold climate-16.410.78.813,400218616022
CK40[C,U]T-24B-**+TDR · cold climateML180UH070V36B*16.410.38.413,900218617537
CK40HT-24A-**+TDR · cold climateML180UH045V36A*16.410.38.313,900218617552
CK40HT-24A-**+TDR · cold climateML180UH030V36A*16.410.48.313,900218617551
CK40[C,U]T-30A-**+TDR · cold climateML180UH045V36A*16.410.48.313,900218617543
CK40[C,U]T-30B-**+TDR · cold climateML180UH070V36B*16.410.48.213,900218617546
CK40[C,U]T-30B-**+TDR · cold climateSLP99UH070XV36B*16.410.48.213,900218617511
CK40[C,U]T-24B-**+TDR · cold climateSLP99UH070XV36B*16.310.38.414,000218617504
CK40HT-24B-**+TDR · cold climateML180UH070V36B*16.310.58.213,900218617557
CBK45UHVT-024-230- · cold climate-16.210.78.713,400218616020
CK40HT-30A-**+TDR · cold climateML180UH070V36A*16.210.58.613,800218617564
CK40HT-30A-**+TDR · cold climateML180UH045XE36A*16.210.68.613,800218617526
CK40HT-30A-**+TDR · cold climateML180UH045E36A*16.210.68.613,800218617525
CBK45UHVT-018-230- · cold climate-16.211.08.512,600218082937
CK40HT-24A-**+TDR · cold climateEL280UH045E36A*16.210.48.413,900218617514
CBK43UHET-024-DV · cold climate-16.110.58.813,600218616018
CBK43UHET-018-DV- · cold climate-16.110.58.813,600218616017
CBK45UHET-024-230- · cold climate-16.110.68.713,500218616019
CK40HT-30B-**+TDR · cold climateML193UH070XE36B*16.010.58.313,900218617571
CK40HT-24B-**+TDR · cold climateML193UH070XE36B*16.010.58.313,900218617560
CK40HT-24A-**+TDR · cold climateML180UH070V36A*16.010.38.313,900218617553
CK40[C,U]T-24A-**+TDR · cold climateML180UH070V36A*16.010.38.313,900218617535
CK40[C,U]T-30A-**+TDR · cold climateML180UH070V36A*16.010.48.213,900218617544
CK40[C,U]T-30A-**+TDR · cold climateEL280UH070XE36A*16.010.48.213,900218617541
CK40[C,U]T-30A-**+TDR · cold climateEL280UH070E36A*16.010.48.213,900218617508
CK40HT-30B-**+TDR · cold climateML193UH045XE36B*15.910.48.313,900218617570
CK40HT-24B-**+TDR · cold climateML193UH045XE36B*15.910.48.313,900218617559
CK40HT-24A-**+TDR · cold climateEL280UH070XE36A*15.910.38.314,000218617550
CK40[C,U]T-24A-**+TDR · cold climateEL280UH070XE36A*15.910.38.314,000218617532
CK40HT-24A-**+TDR · cold climateEL280UH070E36A*15.910.38.314,000218617515
CK40[C,U]T-24A-**+TDR · cold climateEL280UH070E36A*15.910.38.314,000218617501
CK40DT-24B-**+TDR · cold climateML193DF070XE36B*15.810.48.413,900218617574
CK40[C,U]T-30B-**+TDR · cold climateML193UH070XE36B*15.810.48.213,900218617549
CK40[C,U]T-30B-**+TDR · cold climateEL280UH090E36B*15.810.58.213,900218617545
CK40HT-30A-**+TDR · cold climateEL180UH060NE36A*15.710.48.613,800218617522
CK40HT-30A-**+TDR · cold climateEL180UH040NE36A*15.710.48.613,800218617521
CK40DT-24B-**+TDR · cold climateML193DF045XE36B*15.710.48.413,900218617573
CK40[C,U]T-24B-**+TDR · cold climateML193UH070XE36B*15.710.38.314,000218617540
CK40[C,U]T-24B-**+TDR · cold climateEL280UH090E36B*15.710.48.313,900218617536
CK40[C,U]T-30B-**+TDR · cold climateML193UH045XE36B*15.710.48.214,000218617548
CK40[C,U]T-30A-**+TDR · cold climateML180UH045XE36A*15.710.48.213,900218617510
CK40[C,U]T-30A-**+TDR · cold climateML180UH045E36A*15.710.48.213,900218617509
CK40[C,U]T-30A-**+TDR · cold climateEL280UH045E36A*15.710.58.213,900218617507
CK40[C,U]T-24B-**+TDR · cold climateML193UH045XE36B*15.610.38.314,000218617539
CK40HT-24A-**+TDR · cold climateML180UH045XE36A*15.610.48.313,900218617517
Same unit, other model numbers2

These model numbers have exactly the same certified ratings and matchups as the Lennox ML15KSPV-018-230A: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Yearly running cost in 10 large cities$505-$1,332

At each state's average electricity price and the city's typical heating and cooling hours.

Questions6
What is the SEER2 rating of the Lennox ML15KSPV-018-230A?
The Lennox ML15KSPV-018-230A is rated at up to 17.2 SEER2 and 10.6 EER2 for cooling and up to 8.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 83 certified matchups SEER2 ranges from 15.2-17.2.
Is the Lennox ML15KSPV-018-230A good for cold climates?
Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 14,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the Lennox ML15KSPV-018-230A cost to run per year?
At its rated efficiency it costs about $505-$1,332 a year in electricity in large U.S. cities, depending on climate and local rates - for example $620 in Phoenix and $1,111 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Lennox ML15KSPV-018-230A the same as the GE Appliances NS15H18HA5?
Yes, as far as the certified ratings go. ENERGY STAR lists 3 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
Which indoor units work with the Lennox ML15KSPV-018-230A?
ENERGY STAR lists 83 certified combinations for this outdoor unit. The highest-rated ones use CK40HT-30A-**+TDR, CK40[C,U]T-24B-**+TDR, CK40HT-24B-**+TDR.
What refrigerant does the Lennox ML15KSPV-018-230A use?
It uses R-454B.

Running cost and savings

Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

Heat pump $614/yrYou save $340/yrSee details ↓
1. Where you live
Adjust heating and cooling hours

Filled in from your city's climate. Change them if you run the system much more or less than usual.

2. The heat pump Lennox ML15KSPV-018-230A
3. What it replaces
4. Price replace the example with your quote
Heat pump, per year
$614
Current system, per year
$954
You save per year
$340
Payback
20.6 years
Net after 10 years
-$3,602

Cooling $379Heating $235Electricity used: 3,838 kWhSaved vs. a minimum-efficiency heat pump: $118

Estimates use the unit's rated SEER2 and HSPF2, full-load hours derived from NOAA 1991-2020 degree days, average residential electricity prices from the U.S. EIA (12 months to July 2026) and fuel prices from EIA (2025 for natural gas, week of 2026-10-05 for propane and heating oil). Very cold days that need backup heat are not modelled. Federal minimum for comparison: 14.3 SEER2 / 7.5 HSPF2.

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Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 16, 2026. How we use the data.