SP18AZ24AJVC

SP18AZ24AJVC is in the certified data.

Its certified full-speed heating output at 5°F is 24,800–26,200 Btu/h, 103–109% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

Russell and Sure · central heat pump

SP18AZ24AJVC is in the certified data as of Sep 19, 2026. SP18AZ24AJVC changed its certified heat output at 47°F on 52 pairings from 22,800 Btu/h to 24,000 Btu/h in the certified data between February 2025 and March 2025.

24,000 Btu (2-ton)
Central
Variable speed
US and Canada

Heating at 47°F

24,000

25,400 at 17°F

26,000 at 5°F

Btu/h, certified

2.10 COP at 5°F

Cooling at 95°F

22,800

Btu/h, certified

EER2 12.5 at 95°F

SEER2 20.0

Heating and cooling by outdoor temperature

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 24,000 Btu/h of heat at 47°F, 25,400 Btu/h at 17°F, and 26,000 Btu/h at 5°F, 108% of its 47°F rating. It delivers 22,800 Btu/h of cooling at 95°F. At 5°F that is 7,000 Btu/h above the example heating load of 19,000 Btu/h; at 95°F it is 13,300 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 210106723 · listed by Sure · certified Jun 3, 2026 · 22 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	vs class median	COPat 5°F
5°Ffull speed	26,0007.62 kW	+37%	2.10
17°Ffull speed	25,4007.44 kW	+32%	NR
47°Fnormal speed	24,0007.03 kW	0%	NR
95°Fcooling, full load	22,8006.68 kW	—	NR

EER2 12.5 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: 3.63kW
Electrical input in the 95°F cooling test: 1.82kW
Seasonal average heating COP: 2.49

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: 26,000 Btu/h
This unit at 5°F median across its pairings: 26,000 Btu/h
Median of 2-ton central models at 5°F: 19,000 Btu/h
Models in this group: 565

This unit is above 98% of them, at number 13 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 SP18AZ24AJVC

28 pairings · 28 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.

Certified values for SP18AZ24AJVC
Heating
	This pairing	All pairings
Heat output at 47°F normal speed	24,000 Btu/h	24,000 Btu/h
Heat output at 17°F full speed	25,400 Btu/h	23,000–25,600 Btu/h
Heat output at 5°F full speed	26,000 Btu/h	24,800–26,200 Btu/h
Heat output below 5°F	NR	NR
Cold output 5°F output as a % of the 47°F rating	108%	103–109% of its 47°F rating. Tests use different compressor speeds.
COP at 5°F full speed	2.10	2.00–2.10
HSPF2 Region IV	8.5	8.5
Cooling
Cooling capacity at 95°F full-load test	22,800 Btu/h	22,800 Btu/h
EER2 at 95°F	12.5	12.5
SEER2 cooling season	20.0	18.0–20.0
Cooling at other temperatures	NR	NR
Equipment and listing
Refrigerant	R-410A
Compressor	Variable speed
Indoor unit	TCFZ2421HEAAM	2 indoor units
Furnace	S962V0403A17M4S	13 furnaces
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	United States	US and Canada
Model string as certified	SP18AZ24AJVC

Pairings, by indoor-unit class

2 indoor units · 28 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 1 indoor unit

TCFZ2421HEAAM (the pairing on screen) brand not stated 26,000 Btu/hat 5°F, full speed

26 pairings, 13 with a furnace · 47°F 24,000 Btu/h · 95°F cooling 22,800 Btu/h · Cold output 108% · COP 2.10

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
TCFZ2421HEAAM (the pairing on screen)	—	26,000	24,000	22,800	108%	2.10	Yes	26

Air handler · 1 indoor unit

SHMVZ2421HEACA brand not stated 24,800 Btu/hat 5°F, full speed

2 pairings · 47°F 24,000 Btu/h · 95°F cooling 22,800 Btu/h · Cold output 103% · COP 2.00

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
SHMVZ2421HEACA	—	24,800	24,000	22,800	103%	2.00	Yes	2

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

Showing 2 of 2 indoor units

Sold as, and units with identical certified values

Brands listing this model number

Other brands that list these model numbers

Are Russell and Sure heat pumps the same?47 shared model numbers

Model number as listed

SP18AZ24AJVC 28 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

SP18AZ24AJVC changed its certified heat output at 47°F on 52 pairings from 22,800 Btu/h to 24,000 Btu/h in the certified data between February 2025 and March 2025.
SP18AZ24AJVC was in the certified data by September 2024.

History and definitions

History

First certified record: Jun 2, 2026
Most recent certified record: Jun 3, 2026
Measurements reported: Jun 3, 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, “SP18AZ24AJVC — certified heat output”. Certified figures dated Sep 19, 2026, checked daily.
https://heatpumplist.com/model/sp18az24ajvc

SP18AZ24AJVC

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 24,000 Btu heat pumps#