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EL16KP1-018-230A

EL16KP1-018-230A is in the certified data.

Its certified full-speed heating output at 5°F is 7,900–8,500 Btu/h, 45–47% of its 47°F rating, depending on the pairing.

Lennox · central heat pump

EL16KP1-018-230A is in the certified data as of Sep 19, 2026.

67 certified pairings with 44 different figures. See all

Heating at 47°F

17,800

10,900 at 17°F

8,200 at 5°F

Btu/h, certified

1.94 COP at 5°F

Cooling at 95°F

18,000

Btu/h, certified

EER2 13.6 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 EL16KP1-018-230A, by outdoor temperature Heating: 8,200 Btu/h at 5°F, 10,900 Btu/h at 17°F, 17,800 Btu/h at 47°F. Cooling: 18,000 Btu/h at 95°F. The bars start at zero. Median of 1.5-ton central models: 11,200 Btu/h at 5°F, 12,600 Btu/h at 17°F, 18,000 Btu/h at 47°F, 18,000 Btu/h at 95°F. 0 5,000 10,000 15,000 20,000 Btu/h 8,200 5°F 10,900 17°F 17,800 47°F 18,000 95°F Outdoor temperature (°F)
  • Heating output
  • Cooling output
  • Median of 1.5-ton central models
  • Example heating load
  • Example cooling load
  • Frosting range, 17 to 45°F

This pairing delivers 17,800 Btu/h of heat at 47°F, 10,900 Btu/h at 17°F, and 8,200 Btu/h at 5°F, 46% of its 47°F rating. It delivers 18,000 Btu/h of cooling at 95°F. At 5°F that is 2,800 Btu/h short of the example heating load of 11,000 Btu/h; at 95°F it is 12,500 Btu/h above the example cooling load of 5,500 Btu/h.

Each bar is a separate certified test, drawn at its outdoor temperature, starting at zero. The 47°F figure is at one speed; the 17 and 5°F figures are at full speed. The short dark line on each bar is the median of 1.5-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 450 sq ft where winters reach 5°F: heating runs from 11,000 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 5,500 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 215685805 · listed by Lennox · certified Oct 27, 2025 · 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 1.5-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 8,2002.40 kW −27% 1.94
17°Fone compressor speed 10,9003.19 kW −13% NR
47°Fone compressor speed 17,8005.22 kW −1% NR
95°Fcooling, full load 18,0005.28 kW — NR

EER2 13.6 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
1.24kW
Electrical input in the 95°F cooling test
1.32kW
Seasonal average heating COP
2.29

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 18,000 Btu heat pumps

1.5-ton central models

This pairing at 5°F
8,200 Btu/h
This unit at 5°F median across its pairings
8,200 Btu/h
Median of 1.5-ton central models at 5°F
11,200 Btu/h
Models in this group
243

This unit is above 8% of them, at number 224 of 243 by heat at 5°F. The middle half of the group runs 8,600 to 18,000 Btu/h.

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

Closest models by heat at 5°F

Every 18,000 Btu (1.5-ton) unit, ranked by cooling efficiency, then heating efficiency

Certified values for EL16KP1-018-230A

67 pairings · 67 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 one speed 17,800 Btu/h 17,500–18,000 Btu/h
Heat output at 17°F full speed 10,900 Btu/h 10,500–11,200 Btu/h
Heat output at 5°F full speed 8,200 Btu/h 7,900–8,500 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 46%
COP at 5°F full speed 1.94 1.86–2.08
HSPF2 Region IV 7.8 7.8
Cooling
Cooling capacity at 95°F full-load test 18,000 Btu/h 18,000 Btu/h
EER2 at 95°F 13.6 13.0–14.2
SEER2 cooling season 16.0 15.2–16.5
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-454B
Compressor Single stage
Indoor unit CK40HT-24B-**+TDR 12 indoor units
FurnaceEL297UH070XE36B* 46 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 EL16KP1-018-230A**

Pairings, by indoor-unit class

12 indoor units · 67 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 4 indoor units

  1. CK40HT-24B-**+TDR brand not stated 8,200 Btu/hat 5°F, full speed

    19 pairings, 19 with a furnace · 47°F 17,900 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 46% · COP 1.96

  2. CK40HT-24A-**+TDR brand not stated 8,000 Btu/hat 5°F, full speed

    15 pairings, 15 with a furnace · 47°F 17,600 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 45% · COP 1.94

  3. CK40HT-30A-**+TDR brand not stated 8,100 Btu/hat 5°F, full speed

    13 pairings, 13 with a furnace · 47°F 17,700 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 46% · COP 1.98

  4. CK40DT-30/36B-**+TDR brand not stated 8,400 Btu/hat 5°F, full speed

    12 pairings, 12 with a furnace · 47°F 18,000 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 47% · COP 1.92

Indoor units in the furnace paired class
Indoor unit Brand At 5°FBtu/h · full speed At 47°FBtu/h · one speed At 95°FBtu/h · cooling Cold output% of 47°F rating COP 5°Ffull speed Cold climate Pairings
CK40HT-24B-**+TDR — 8,200 17,900 18,000 46% 1.96 NC 19
CK40HT-24A-**+TDR — 8,000 17,600 18,000 45% 1.94 NC 15
CK40HT-30A-**+TDR — 8,100 17,700 18,000 46% 1.98 NC 13
CK40DT-30/36B-**+TDR — 8,400 18,000 18,000 47% 1.92 NC 12

Air handler · 6 indoor units

  1. CBK45UHET-024-230-** brand not stated 8,200 Btu/hat 5°F, full speed

    1 pairing · 47°F 17,600 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 47% · COP 2.00

  2. CBK45UHPT-024-230-** brand not stated 8,400 Btu/hat 5°F, full speed

    1 pairing · 47°F 17,800 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 47% · COP 1.98

  3. CBK45UHVT-018-230-** brand not stated 8,100 Btu/hat 5°F, full speed

    1 pairing · 47°F 17,700 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 46% · COP 1.86

  4. CBK45UHVT-024-230-** brand not stated 8,400 Btu/hat 5°F, full speed

    1 pairing · 47°F 17,700 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 47% · COP 1.98

  5. CBK47UHET-018-230-** brand not stated 8,300 Btu/hat 5°F, full speed

    1 pairing · 47°F 17,600 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 47% · COP 2.04

  6. CBK47UHET-024-230-** brand not stated 8,300 Btu/hat 5°F, full speed

    1 pairing · 47°F 17,700 Btu/h · 95°F cooling 18,000 Btu/h · Cold output 47% · COP 2.08

Indoor units in the air handler class
Indoor unit Brand At 5°FBtu/h · full speed At 47°FBtu/h · one speed At 95°FBtu/h · cooling Cold output% of 47°F rating COP 5°Ffull speed Cold climate Pairings
CBK45UHET-024-230-** — 8,200 17,600 18,000 47% 2.00 NC 1
CBK45UHPT-024-230-** — 8,400 17,800 18,000 47% 1.98 NC 1
CBK45UHVT-018-230-** — 8,100 17,700 18,000 46% 1.86 NC 1
CBK45UHVT-024-230-** — 8,400 17,700 18,000 47% 1.98 NC 1
CBK47UHET-018-230-** — 8,300 17,600 18,000 47% 2.04 NC 1
CBK47UHET-024-230-** — 8,300 17,700 18,000 47% 2.08 NC 1

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

Showing 10 of 12 indoor units All 67 certified pairings

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • EL16KP1-018-230A** 67 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.

Other model numbers with identical certified values

2 units share this record. 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

  • EL16KP1-018-230A first appeared in the certified data between September 2024 and November 2024.

History and definitions

History

First certified record
Most recent certified record
Measurements reported
Oct 27, 2025
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, “EL16KP1-018-230A — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/el16kp1-018-230a