SL25XPV-048-230A

SL25XPV-048-230A is in the certified data.

Its certified full-speed heating output at 5°F is 36,800 Btu/h, 83% of its 47°F rating (tests at different compressor speeds) in its certified pairing.

Lennox · central heat pump

SL25XPV-048-230A is in the certified data as of Sep 19, 2026. SL25XPV-048-230A changed its certified heat output at 17°F on 49 pairings in the certified data between September 2024 and November 2024. The new figure is higher on all 49.

42,000 Btu (3.5-ton)
Central
Variable speed
Canada

Heating at 47°F

44,500

43,000 at 17°F

36,800 at 5°F

Btu/h, certified

1.96 COP at 5°F

Cooling at 95°F

44,500

Btu/h, certified

EER2 12.0 at 95°F

SEER2 20.0

Heating and cooling by outdoor temperature

Heating output
Cooling output
Median of 3.5-ton central models
Example heating load
Example cooling load
Frosting range, 17 to 45°F

This pairing delivers 44,500 Btu/h of heat at 47°F, 43,000 Btu/h at 17°F, and 36,800 Btu/h at 5°F, 83% of its 47°F rating. It delivers 44,500 Btu/h of cooling at 95°F. At 5°F that is 3,800 Btu/h above the example heating load of 33,000 Btu/h; at 95°F it is 27,500 Btu/h above the example cooling load of 17,000 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 3.5-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 1,400 sq ft where winters reach 5°F: heating runs from 33,000 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 17,000 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 207436144 · listed by Lennox · certified Jun 12, 2026 · 1 pairing carries 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 3.5-ton central models. Heating tests run at 70°F indoors. The cooling test runs at 80°F indoors.
Outdoor temperature	Certified outputBtu/h	vs class median	COPat 5°F
5°Ffull speed	36,80010.79 kW	+12%	1.96
17°Ffull speed	43,00012.60 kW	+39%	NR
47°Fnormal speed	44,50013.04 kW	+1%	NR
95°Fcooling, full load	44,50013.04 kW	—	NR

EER2 12.0 in that test. SEER2 20.0 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test: 5.50kW
Electrical input in the 95°F cooling test: 3.71kW
Seasonal average heating COP: 2.73

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 42,000 Btu heat pumps

3.5-ton central models

This pairing at 5°F: 36,800 Btu/h
This unit at 5°F median across its pairings: 36,800 Btu/h
Median of 3.5-ton central models at 5°F: 33,000 Btu/h
Models in this group: 222

This unit is above 61% of them, at number 87 of 222 by heat at 5°F. The middle half of the group runs 20,000 to 40,000 Btu/h.

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

Closest models by heat at 5°F

Every 42,000 Btu (3.5-ton) unit, ranked by cooling efficiency, then heating efficiency

Certified values for SL25XPV-048-230A

1 pairing · 1 AHRI certificate

This pairing is the one shown above. Under all pairings, a single figure means every pairing agrees and a range means the pairing decides.

Certified values for SL25XPV-048-230A
Heating
	This pairing	All pairings
Heat output at 47°F normal speed	44,500 Btu/h	44,500 Btu/h
Heat output at 17°F full speed	43,000 Btu/h	43,000 Btu/h
Heat output at 5°F full speed	36,800 Btu/h	36,800 Btu/h
Heat output below 5°F	NR	NR
Cold output 5°F output as a % of the 47°F rating	83%	83% of its 47°F rating. Tests use different compressor speeds.
COP at 5°F full speed	1.96	1.96
HSPF2 Region IV	9.3	9.3
Cooling
Cooling capacity at 95°F full-load test	44,500 Btu/h	44,500 Btu/h
EER2 at 95°F	12.0	12.0
SEER2 cooling season	20.0	20.0
Cooling at other temperatures	NR	NR
Equipment and listing
Refrigerant	R-410A
Compressor	Variable speed
Indoor unit	CBA38MV-060-230*+TDR	1 indoor unit
Furnace	No furnace	None
Cold-climate designation EPA's designation, as published	Yes	On every pairing
ENERGY STAR Most Efficient EPA's designation, as published	Yes	On every pairing
Where it is sold	Canada	Canada
Model string as certified	SL25XPV-048-230A**

Pairings, by indoor-unit class

1 indoor unit · 1 certified pairing

One row per indoor unit certified with this outdoor unit.

Air handler · 1 indoor unit

CBA38MV-060-230*+TDR (the pairing on screen) brand not stated 36,800 Btu/hat 5°F, full speed

1 pairing · 47°F 44,500 Btu/h · 95°F cooling 44,500 Btu/h · Cold output 83% · COP 1.96

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
CBA38MV-060-230*+TDR (the pairing on screen)	—	36,800	44,500	44,500	83%	1.96	Yes	1

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

Showing 1 of 1 indoor unit

Sold as, and units with identical certified values

Brands listing this model number

Lennox1 pairing

Model number as listed

SL25XPV-048-230A** 1 pairing

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

SL25XPV-048-230A changed its certified heat output at 17°F on 49 pairings in the certified data between September 2024 and November 2024. The new figure is higher on all 49.
SL25XPV-048-230A was in the certified data by September 2024.

History and definitions

History

First certified record: Jun 12, 2026
Most recent certified record: Jun 12, 2026
Measurements reported: Jun 12, 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, “SL25XPV-048-230A — certified heat output”. Certified figures dated Sep 19, 2026, checked daily.
https://heatpumplist.com/model/sl25xpv-048-230a

SL25XPV-048-230A

Certified heating and cooling

Heating and cooling by outdoor temperature

Rebates where you live

Certified output and power use#

Power use at each temperature

How it compares with other 42,000 Btu heat pumps#

Closest models by heat at 5°F

Certified values for SL25XPV-048-230A#

Pairings, by indoor-unit class#