MLP19AY48AJVC

MLP19AY48AJVC is in the certified data.

Its certified full-speed heating output at 5°F is 41,500–42,000 Btu/h, 91–92% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

Mainline · central heat pump

All 82 certified Mainline models

MLP19AY48AJVC is in the certified data as of Sep 19, 2026.

48,000 Btu (4-ton)
Central
Variable speed
United States

Heating at 47°F

45,500

42,000 at 17°F

42,000 at 5°F

Btu/h, certified

2.10 COP at 5°F

Cooling at 95°F

45,500

Btu/h, certified

EER2 12.0 at 95°F

SEER2 19.0

Heating and cooling by outdoor temperature

Heating output
Cooling output
Median of 4-ton central models
Example heating load
Example cooling load
Frosting range, 17 to 45°F

This pairing delivers 45,500 Btu/h of heat at 47°F, 42,000 Btu/h at 17°F, and 42,000 Btu/h at 5°F, 92% of its 47°F rating. It delivers 45,500 Btu/h of cooling at 95°F. At 5°F that is 5,500 Btu/h above the example heating load of 36,500 Btu/h; at 95°F it is 27,500 Btu/h above the example cooling load of 18,000 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 4-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 1,500 sq ft where winters reach 5°F: heating runs from 36,500 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 18,000 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 215611118 · listed by MAINLINE · certified Jun 12, 2026 · 6 pairings share these values

Rebates where you live

Meets the recorded equipment thresholds of 53 programs in 28 states, provinces, or territories:Alabama (1), Arizona (1), California (3), Colorado (2), Delaware (2), Idaho (2), Illinois (1), Kansas (1), Kentucky (1), Maine (2), Maryland (3), Michigan (2), Minnesota (2), Mississippi (2), Nevada (1), New Hampshire (2), New Jersey (7), New York (4), North Carolina (1), Oregon (2), Pennsylvania (4), South Carolina (1), Tennessee (1), Texas (3), Utah (1), Vermont (3), Washington (3), Wisconsin (1).

All 53 programs by state and province

Alabama

EnergyRight Home Energy Rebates · TVA EnergyRight · EPB

Arizona

SRP Cool Cash Rebate

California

Colorado

Delaware

Idaho

Maine

Maryland

Michigan

Minnesota

Mississippi

Nevada

NV Energy Residential Air Conditioning Discounts

New Hampshire

New Jersey

New York

North Carolina

Duke Energy Smart $aver HVAC Replacement · Duke Energy Carolinas · Duke Energy Progress

Oregon

Pennsylvania

South Carolina

Duke Energy Smart $aver HVAC Replacement · Duke Energy Carolinas · Duke Energy Progress

Tennessee

EnergyRight Home Energy Rebates · TVA EnergyRight · EPB

Texas

Utah

Wattsmart Homes Air Source Heat Pumps (Utah) · Rocky Mountain Power

Vermont

Washington

Wisconsin

Focus on Energy Air-Source Heat Pump Instant Discount

Threshold comparisons use the unit’s median certified figures across its pairings, not the pairing selected above. Meeting these thresholds means the equipment may qualify; it does not guarantee approval. Service-area, installation, and product-list requirements also apply.

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 4-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	42,00012.31 kW	+15%	2.10
17°Ffull speed	42,00012.31 kW	+20%	NR
47°Fnormal speed	45,50013.33 kW	−5%	NR
95°Fcooling, full load	45,50013.33 kW	—	NR

EER2 12.0 in that test. SEER2 19.0 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test: 5.86kW
Electrical input in the 95°F cooling test: 3.79kW
Seasonal average heating COP: 2.93

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 48,000 Btu heat pumps

4-ton central models

This pairing at 5°F: 42,000 Btu/h
This unit at 5°F median across its pairings: 42,000 Btu/h
Median of 4-ton central models at 5°F: 36,400 Btu/h
Models in this group: 408

This unit is above 68% of them, at number 129 of 408 by heat at 5°F. The middle half of the group runs 25,350 to 46,000 Btu/h.

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

Among 48,000 Btu central models, each by its median certified pairing, highest first: 5°F output as a share of its 47°F rating, 64th of 408 (tied); HSPF2, 5th of 420 (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.

RHPXYC048AJT: The same 45,500 Btu/h rating at 47°F; 18,000 Btu/h at 5°F (this model: 42,000).
WP15AY48AJ2N: The same 45,500 Btu/h rating at 47°F; 23,000 Btu/h at 5°F (this model: 42,000).
FRP15AY48AJ2N: The same 45,500 Btu/h rating at 47°F; 23,400 Btu/h at 5°F (this model: 42,000).

Closest models by heat at 5°F

Every 48,000 Btu (4-ton) unit, ranked by cooling efficiency, then heating efficiency

Floor area at the cold test point

The median certified output of 42,000 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	1,000–1,750
Mild	Typical	16–26	1,620–2,630
Mild	Tight, well insulated	10–18	2,330–4,200
Cold	Drafty, little insulation	28–52	810–1,500
Cold	Typical	18–30	1,400–2,330
Cold	Tight, well insulated	12–22	1,910–3,500
Very cold	Drafty, little insulation	32–58	720–1,310
Very cold	Typical	22–38	1,110–1,910
Very cold	Tight, well insulated	16–28	1,500–2,630

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 MLP19AY48AJVC

14 pairings · 14 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 MLP19AY48AJVC
Heating
	This pairing	All pairings
Heat output at 47°F normal speed	45,500 Btu/h	45,500 Btu/h
Heat output at 17°F full speed	42,000 Btu/h	42,000 Btu/h
Heat output at 5°F full speed	42,000 Btu/h	41,500–42,000 Btu/h
Heat output below 5°F	NR	NR
Cold output 5°F output as a % of the 47°F rating	92%	91–92% of its 47°F rating. Tests use different compressor speeds.
COP at 5°F full speed	2.10	2.10
HSPF2 Region IV	10.0	10.0
Cooling
Cooling capacity at 95°F full-load test	45,500 Btu/h	45,500 Btu/h
EER2 at 95°F	12.0	11.7–12.0
SEER2 cooling season	19.0	18.0–19.0
Cooling at other temperatures	NR	NR
Equipment and listing
Refrigerant	R-454B
Compressor	Variable speed
Indoor unit	MLHMVY4821SEACA	2 indoor units
Furnace	No furnace	13 furnaces
Cold-climate designation EPA's designation, as published	NC	NC
ENERGY STAR Most Efficient EPA's designation, as published	No	On some pairings
Where it is sold	United States	United States
Model string as certified	MLP19AY48AJVC

Across 14 certified pairings with 2 indoor models: heat at 5°F 41,500 Btu/h with TCFY4821SEAAM to 42,000 Btu/h with MLHMVY4821SEACA; HSPF2 10.0 throughout; SEER2 18.0 with TCFY4821SEAAM to 19.0 with MLHMVY4821SEACA. Endpoints name one indoor model where recorded; the furnace pairing can also change the figures.

Pairings, by indoor-unit class

2 indoor units · 14 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 1 indoor unit

TCFY4821SEAAM brand not stated 42,000 Btu/hat 5°F, full speed

13 pairings, 13 with a furnace · 47°F 45,500 Btu/h · 95°F cooling 45,500 Btu/h · Cold output 92% · 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
TCFY4821SEAAM	—	42,000	45,500	45,500	92%	2.10	NC	13

Air handler · 1 indoor unit

MLHMVY4821SEACA (the pairing on screen) brand not stated 42,000 Btu/hat 5°F, full speed

1 pairing · 47°F 45,500 Btu/h · 95°F cooling 45,500 Btu/h · Cold output 92% · COP 2.10

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
MLHMVY4821SEACA (the pairing on screen)	—	42,000	45,500	45,500	92%	2.10	NC	1

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

Mainline14 pairings

Model number as listed

MLP19AY48AJVC 14 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.

History and definitions

Other Elite models by nominal cooling size: MLP15AY18AJ2N (18,000 Btu), MLP15AZ18AJ2N (18,000 Btu), MLP19AY24AJVC (24,000 Btu), MLP15AZ30AJ2N (30,000 Btu), MLP15AY36AJ2N (36,000 Btu), MLP15AY42AJ2N (42,000 Btu), MLP15AY48AJ2N (48,000 Btu).

History

First certified record: Jun 12, 2026
Most recent certified record: Sep 15, 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, “MLP19AY48AJVC — certified heat output”. Certified figures dated Sep 19, 2026, checked daily.
https://heatpumplist.com/model/mlp19ay48ajvc