27SCA542A**30*

Carrier · central heat pump

27SCA542A**30* is in the certified data as of Sep 19, 2026. 27SCA542A**30* changed its certified COP at 5°F on AHRI certificate 216464100 from 2.10 to 2.26 in the certified data between August 2025 and September 2026.

42,000 Btu (3.5-ton)
Central
Single stage
US and Canada

Heating at 47°F

40,500

25,600 at 17°F

19,800 at 5°F

Btu/h, certified

2.24 COP at 5°F

Cooling at 95°F

43,000

Btu/h, certified

EER2 12.5 at 95°F

SEER2 15.2

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 40,500 Btu/h of heat at 47°F, 25,600 Btu/h at 17°F, and 19,800 Btu/h at 5°F, 49% of its 47°F rating. It delivers 43,000 Btu/h of cooling at 95°F. At 5°F that is 13,200 Btu/h short of the example heating load of 33,000 Btu/h; at 95°F it is 26,000 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 one 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 214277412 · listed by Carrier · certified Feb 10, 2026 · 1 pairing carries these values

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°Fone compressor speed	19,8005.80 kW	−40%	2.24
17°Fone compressor speed	25,6007.50 kW	−17%	NR
47°Fone compressor speed	40,50011.87 kW	−8%	NR
95°Fcooling, full load	43,00012.60 kW	—	NR

EER2 12.5 in that test. SEER2 15.2 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test: 2.59kW
Electrical input in the 95°F cooling test: 3.44kW
Seasonal average heating COP: 2.29

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: 19,800 Btu/h
This unit at 5°F median across its pairings: 19,800 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 10% of them, at number 200 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.

Among 42,000 Btu central models, each by its median certified pairing, highest first: 5°F output as a share of its 47°F rating, 192nd of 222 (tied); HSPF2, 163rd of 224 (tied). Models without that figure are left out.

Similar ratings at 47°F

These central models share the nominal cooling size. Comparisons use each model’s median certified figures across pairings.

RD18AY48AJVC: 41,000 Btu/h at 47°F (this model: 40,500); 37,600 Btu/h at 5°F (this model: 19,800).
GZV7SA4210A: 41,000 Btu/h at 47°F (this model: 40,500); 31,000 Btu/h at 5°F (this model: 19,800).
DZ6VSA421EA: 40,000 Btu/h at 47°F (this model: 40,500); 30,600 Btu/h at 5°F (this model: 19,800).

Closest models by heat at 5°F

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

Floor area at the cold test point

The median certified output of 19,800 Btu/h at 5°F matches the size calculator’s heating estimate for these floor areas, rounded to about 10 sq ft. Each range divides that output by the climate band’s heating rates.

Floor area by climate band and house condition
Climate band	House condition	Btu/h per sq ft	Approximate sq ft
Mild	Drafty, little insulation	24–42	470–830
Mild	Typical	16–26	760–1,240
Mild	Tight, well insulated	10–18	1,100–1,980
Cold	Drafty, little insulation	28–52	380–710
Cold	Typical	18–30	660–1,100
Cold	Tight, well insulated	12–22	900–1,650
Very cold	Drafty, little insulation	32–58	340–620
Very cold	Typical	22–38	520–900
Very cold	Tight, well insulated	16–28	710–1,240

This is an estimate, not a house-specific load calculation. Output stays at the 5°F test point for every band; it does not predict output at the band’s winter design temperature.

Certified values for 27SCA542A**30*

5 pairings · 5 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 27SCA542A**30*
Heating
	This pairing	All pairings
Heat output at 47°F one speed	40,500 Btu/h	39,000–40,500 Btu/h
Heat output at 17°F full speed	25,600 Btu/h	24,600–25,600 Btu/h
Heat output at 5°F full speed	19,800 Btu/h	19,000–19,900 Btu/h
Heat output below 5°F	NR	NR
Cold output 5°F output as a % of the 47°F rating	49%	49% of its 47°F rating.
COP at 5°F full speed	2.24	2.20–2.26
HSPF2 Region IV	7.8	7.8
Cooling
Cooling capacity at 95°F full-load test	43,000 Btu/h	41,500–43,000 Btu/h
EER2 at 95°F	12.5	11.7–13.0
SEER2 cooling season	15.2	15.2–15.5
Cooling at other temperatures	NR	NR
Equipment and listing
Refrigerant	R-454B
Compressor	Single stage
Indoor unit	FEVB0060**+NAVA56001CK	5 indoor units
Furnace	No furnace	None
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	27SCA542A*30

Across 5 certified pairings with 5 indoor models: heat at 5°F 19,000 Btu/h with FG5ANBD60L* to 19,900 Btu/h with F55AA*D60L*; HSPF2 7.8 throughout; SEER2 15.2 with F55AA*D60L* to 15.5 with FG5ANBD60L*. Endpoints name one indoor model where recorded; the furnace pairing can also change the figures.

Pairings, by indoor-unit class

5 indoor units · 5 certified pairings

One row per indoor unit certified with this outdoor unit.

Air handler · 5 indoor units

F55AA*D60L* brand not stated 19,900 Btu/hat 5°F, full speed

1 pairing · 47°F 40,500 Btu/h · 95°F cooling 42,500 Btu/h · Cold output 49% · COP 2.26
FEVB0060**+NAVA56001CK (the pairing on screen) brand not stated 19,800 Btu/hat 5°F, full speed

1 pairing · 47°F 40,500 Btu/h · 95°F cooling 43,000 Btu/h · Cold output 49% · COP 2.24
FG5ANBD60L* brand not stated 19,000 Btu/hat 5°F, full speed

1 pairing · 47°F 39,000 Btu/h · 95°F cooling 41,500 Btu/h · Cold output 49% · COP 2.20
FJ5AN*D60L* brand not stated 19,900 Btu/hat 5°F, full speed

1 pairing · 47°F 40,500 Btu/h · 95°F cooling 42,500 Btu/h · Cold output 49% · COP 2.26
FT5ANBD60L* brand not stated 19,000 Btu/hat 5°F, full speed

1 pairing · 47°F 39,000 Btu/h · 95°F cooling 41,500 Btu/h · Cold output 49% · COP 2.20

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
F55AAD60L	—	19,900	40,500	42,500	49%	2.26	NC	1
FEVB0060**+NAVA56001CK (the pairing on screen)	—	19,800	40,500	43,000	49%	2.24	NC	1
FG5ANBD60L*	—	19,000	39,000	41,500	49%	2.20	NC	1
FJ5AND60L	—	19,900	40,500	42,500	49%	2.26	NC	1
FT5ANBD60L*	—	19,000	39,000	41,500	49%	2.20	NC	1

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

Showing 5 of 5 indoor units

Sold as, and units with identical certified values

Brands listing this model number

Carrier5 pairings

Model number as listed

27SCA542A**30* 5 pairings

Variants of the same model number

15 units in this group. Basis: identical certified values in the certified data. This grouping is our inference, not a field in the certified data.

14 of 15 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.

27SPA642A**30*identical certified values

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

27SCA542A**30* changed its certified COP at 5°F on AHRI certificate 216464100 from 2.10 to 2.26 in the certified data between August 2025 and September 2026.
27SCA542A**30* changed its certified heat output at 5°F on AHRI certificate 216464100 from 19,700 Btu/h to 19,900 Btu/h in the certified data between August 2025 and September 2026.
27SCA542A**30* changed its certified heat output at 17°F on AHRI certificate 214277412 from 25,400 Btu/h to 25,600 Btu/h in the certified data between August 2025 and September 2026.
27SCA542A**30* was in the certified data by September 2024.

History and definitions

Other COMFORT 15 SEER2 HP models by nominal cooling size: 25SCA518A**30* (18,000 Btu), 27SCA531A**30* (30,000 Btu), 25SCA536A**30* (36,000 Btu).

History

First certified record: Jan 29, 2025
Most recent certified record: Mar 11, 2026
Measurements reported: Feb 10, 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, “27SCA542A**30* — certified heat output”. Certified figures dated Sep 19, 2026, checked daily.
https://heatpumplist.com/model/gh5san542_st_staa_st

27SCA542A**30*

Certified heating and cooling