ARUM048GSS5

ARUM048GSS5 is in the certified data.

Its certified full-speed heating output at 5°F is 48,000 Btu/h, 79–86% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

LG · mini-split heat pump

All 131 certified LG models

ARUM048GSS5 is in the certified data as of Sep 19, 2026. ARUM048GSS5 changed its certified EER2 on AHRI certificate 205967236 from 12.2 to 13.0 in the certified data between March 2025 and May 2025.

48,000 Btu (4-ton)
Mini-split
Variable speed
Canada

Heating at 47°F

56,000

36,400 at 17°F

48,000 at 5°F

Btu/h, certified

1.83 COP at 5°F

Cooling at 95°F

48,000

Btu/h, certified

EER2 13.0 at 95°F

SEER2 17.0

Heating and cooling by outdoor temperature

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

This pairing delivers 56,000 Btu/h of heat at 47°F, 36,400 Btu/h at 17°F, and 48,000 Btu/h at 5°F, 86% of its 47°F rating. It delivers 48,000 Btu/h of cooling at 95°F. At 5°F that is 6,000 Btu/h above the example heating load of 42,000 Btu/h; at 95°F it is 27,000 Btu/h above the example cooling load of 21,000 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 mini-split 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 1,750 sq ft where winters reach 5°F: heating runs from 42,000 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 21,000 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 205967236 · listed by LG · certified Jan 30, 2026 · 1 pairing carries these values

Rebates where you live

Meets the recorded equipment thresholds of 11 programs in 7 states, provinces, or territories:British Columbia (3), Manitoba (1), New Brunswick (1), Newfoundland and Labrador (1), Nova Scotia (2), Ontario (1), Yukon (2).

All 11 programs by state and province

British Columbia

Nova Scotia

Ontario

Home Renovation Savings: Heat Pumps · Enbridge Gas · IESO grid

Yukon

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 mini-split 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	48,00014.07 kW	+14%	1.83
17°Ffull speed	36,40010.67 kW	−4%	NR
47°Fnormal speed	56,00016.41 kW	+14%	NR
95°Fcooling, full load	48,00014.07 kW	—	NR

EER2 13.0 in that test. SEER2 17.0 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test: 7.69kW
Electrical input in the 95°F cooling test: 3.69kW
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 mini-split models

This pairing at 5°F: 48,000 Btu/h
This unit at 5°F median across its pairings: 48,000 Btu/h
Median of 4-ton mini-split models at 5°F: 42,000 Btu/h
Models in this group: 321

This unit is above 84% of them, at number 50 of 321 by heat at 5°F. The middle half of the group runs 37,000 to 47,500 Btu/h.

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

Among 48,000 Btu mini-split models, each by its median certified pairing, highest first: 5°F output as a share of its 47°F rating, 164th of 321; HSPF2, 130th of 321 (tied). Models without that figure are left out.

Similar ratings at 47°F

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

LMU543HV: 58,000 Btu/h at 47°F (this model: 58,500); 35,800 Btu/h at 5°F (this model: 48,000).
KUMXB541A: 58,000 Btu/h at 47°F (this model: 58,500); 40,000 Btu/h at 5°F (this model: 48,000).
SUZ-AK48NLHZ: 60,000 Btu/h at 47°F (this model: 58,500); HSPF2 8.5 (this model: 10.15).

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 48,000 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	1,140–2,000
Mild	Typical	16–26	1,850–3,000
Mild	Tight, well insulated	10–18	2,670–4,800
Cold	Drafty, little insulation	28–52	920–1,710
Cold	Typical	18–30	1,600–2,670
Cold	Tight, well insulated	12–22	2,180–4,000
Very cold	Drafty, little insulation	32–58	830–1,500
Very cold	Typical	22–38	1,260–2,180
Very cold	Tight, well insulated	16–28	1,710–3,000

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 ARUM048GSS5

3 pairings · 3 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 ARUM048GSS5
Heating
	This pairing	All pairings
Heat output at 47°F normal speed	56,000 Btu/h	56,000–61,000 Btu/h
Heat output at 17°F full speed	36,400 Btu/h	36,400–38,500 Btu/h
Heat output at 5°F full speed	48,000 Btu/h	48,000 Btu/h
Heat output below 5°F	NR	NR
Cold output 5°F output as a % of the 47°F rating	86%	79–86% of its 47°F rating. Tests use different compressor speeds.
COP at 5°F full speed	1.83	1.83
HSPF2 Region IV	10.0	10.0–10.3
Cooling
Cooling capacity at 95°F full-load test	48,000 Btu/h	48,000 Btu/h
EER2 at 95°F	13.0	12.85–13.5
SEER2 cooling season	17.0	17.0–23.3
Cooling at other temperatures	NR	NR
Equipment and listing
Refrigerant	R-410A
Compressor	Variable speed
Indoor unit	None listed	None
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	ARUM048GSS5

Pairings, by indoor-unit class

3 certified pairings

One row per indoor unit certified with this outdoor unit.

Ductless indoor

None listed (the pairing on screen) LG 48,000 Btu/hat 5°F, full speed

3 pairings · 47°F 58,500 Btu/h · 95°F cooling 48,000 Btu/h · Cold output 82% · COP 1.83

Indoor units in the ductless indoor 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
None listed (the pairing on screen)	LG	48,000	58,500	48,000	82%	1.83	Yes	3

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

Sold as, and units with identical certified values

Brands listing this model number

LG3 pairings

Model number as listed

ARUM048GSS5 3 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

ARUM048GSS5 changed its certified EER2 on AHRI certificate 205967236 from 12.2 to 13.0 in the certified data between March 2025 and May 2025.
ARUM048GSS5 was in the certified data by September 2024.

History and definitions

History

First certified record: Jan 30, 2026
Most recent certified record: Jan 30, 2026
Measurements reported: Jan 30, 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, “ARUM048GSS5 — certified heat output”. Certified figures dated Sep 19, 2026, checked daily.
https://heatpumplist.com/model/arum048gss5

ARUM048GSS5

Certified heating and cooling

Heating and cooling by outdoor temperature

Rebates where you live

British Columbia

Manitoba

New Brunswick

Newfoundland and Labrador