LG · 2x2 · 3x3 · LGRED°LG cassettes at AirGreenSold and installed by AirGreen across Montreal, Laval, Longueuil, the South Shore and the North Shore.

LG · Ceiling cassettes · updated October 27, 2026

LG ceiling cassettes: 2x2 or 3x3, standard or LGRED°, system by system

Q: How cold does an LG cassette keep heating?

Down to -20°C with a standard KUSXB outdoor unit, down to -25°C with an LGRED° KUSXA unit. In R-410A, the LCN489HV with the LUU480HHV also heats down to -25°C.

Q: Does the LGRED° cassette get more LogisVert?

Not in 3x3: Hydro-Québec pays on the output at -8°C, where the LGRED° certifies as much as or slightly less than the standard unit. Its amount is equal or lower, from $2,040 to $3,816. At 18,000 in 2x2, the LGRED° gets $1,632 and the standard $1,560.

22 LG cassettes for sale, in R-32 and R-410A. LG calls this format the four-way ceiling cassette: the head sits in the ceiling and blows from all four sides. Two sizes, 2 ft x 2 ft from 9,000 to 18,000 BTU/h and 3 ft x 3 ft from 24,000 to 48,000 BTU/h. With a standard outdoor unit LG rates heating down to −20°C; with LGRED°, down to −25°C.

See the systems See all 22 products

The LG cassette plate

Two sizes, five numbers

Sizes: 2 ft x 2 ft · 3 ft x 3 ft
Capacities: 9,000 to 48,000 BTU/h
Heats down to: −20°C · −25°C LGRED°
ENERGY STAR Cold Climate: 21 of 22 systems
Indicative LogisVert: $1,524 to $3,912

Sources: LG R-32 cassette spec sheets (2025-2026), NEEP (October 14, 2026), ENERGY STAR and Hydro-Québec LogisVert list of October 27, 2026.

Two sizes

2x2 or 3x3: the ceiling decides first

The 2x2 takes a square of about 2 ft at the ceiling and can become a multi-zone head. The 3x3 covers large rooms and shops, always with its own outdoor unit.

2 ft x 2 ft · 9,000 to 18,000 BTU/h

PT-QAGW0 panel, 24-13/32 in. (about 620 mm) square, for the R-32 KNUDB heads.
Can be a multi-zone head: LG sells the KNUDB121A as a Multi F indoor unit, also compatible with a single-zone outdoor unit.
Sound and airflow (high, medium, low): 38 / 35 / 32 dB(A) and 335 CFM at 12,000; 41 / 39 / 36 dB(A) and 459 CFM at 18,000.
Built-in condensate pump (“drain pump”) and R-32 leak detection sensor.

3 ft x 3 ft · 24,000 to 48,000 BTU/h

PT-AAGW0 grille: LG lists it as included with the 3x3 LGRED° system KSSCA421A; Premium PT-AFGW0S panel optional, with the PTAHMP0 purification kit.
Single zone only: LG’s R-32 combination tables only accept a cassette between 7,000 and 18,000 BTU/h on a multi-zone.
Sound and airflow: 46 / 43 / 41 dB(A) and 1,130 CFM at high speed for the 42,000 LGRED°.
Internal condensate pump and R-32 leak detection sensor; optional PTVK430 flange for fresh air, as on the 2x2.

Standard or LGRED°, the indoor unit is the same (KNUDB for the 2x2, KNSCB for the 3x3): only the outdoor unit changes, KUSXB or KUSXA. LG spec sheets KNUDB121A, KSUDB181A, KSUDA181A and KSSCA421A (2025-2026).

System by system

How cold each cassette heats, and what LogisVert pays

NEEP’s coldest test point follows the outdoor unit: −20°C for the six standard KUSXB systems, −25°C for the six LGRED° KUSXA systems. In R-410A, only the LCN489HV with the LUU480HHV heats down to −25°C.

Maximum output in BTU/h, certified by NEEP (October 14, 2026); at −15°C, ENERGY STAR for the 9,000 and 12,000. SEER2 and HSPF2 (region IV): ENERGY STAR. Amounts: Hydro-Québec, October 27, 2026.
System (BTU/h)	AHRI	Max. at −15°C	Coldest point	SEER2 / HSPF2	LogisVert
9,000 · standard	214826530	10,400	not on NEEP	22.2 / 10.0	not listed, under 12,000
12,000 · standard	214826533	10,700	not on NEEP	21.5 / 10.1	not listed, under 12,000
18,000 · standard	214825953	19,000	−20°C · 17,600	20.5 / 9.5	$1,560
18,000 · LGRED°	214825952	20,000	−25°C · 15,500	20.5 / 9.5	$1,632

3x3 R-32 KNSCB cassettes with a KUSXB (standard) or KUSXA (LGRED°) outdoor unit. Maximum output in BTU/h certified by NEEP (October 14, 2026). Each −15°C figure links to the system’s page; LogisVert amounts are further down.
Capacity (BTU/h)	Standard at −15°C	Standard at −20°C	LGRED° at −15°C	LGRED° at −25°C
24,000	23,000	21,000	28,000	21,600
30,000	32,000	27,000	34,000	28,250
36,000	35,000	31,450	36,000	30,000
42,000	40,000	35,200	43,500	36,100
48,000	40,000	36,960	44,500	37,910

R-410A pairs as sold, ENERGY STAR figures by AHRI number (Canadian market, October 27, 2026): these pairs are not on NEEP. For LCN428HV + LUU429HV (AHRI 203161245), no certification was found at NEEP, ENERGY STAR or Hydro-Québec.
System (BTU/h)	Head + outdoor unit	AHRI	Max. at −15°C (ENERGY STAR)	SEER2 / HSPF2	LogisVert
9,000 · 2x2	LCN098HV4 + LUU090HV	211234500	10,100	20.2 / 10.55	not listed, under 12,000
12,000 · 2x2	LCN128HV4 + LUU120HV	211234502	10,700	19.4 / 10.35	not listed, under 12,000
18,000 · 2x2	LCN188HV4 + LUU180HV	211234504	16,200	20.5 / 9.7	$1,524
24,000 · 3x3	LCN249HV + LUU240HV	211234513	21,200	20.0 / 10.2	$2,088
36,000 · 3x3	LCN369HV + LUU360HV	211234508	35,000	21.0 / 10.0	$2,880
42,000 · 3x3	LCN429HV + LUU420HV	211234514	39,000	19.3 / 10.05	$3,360
42,000 · 3x3	LCN428HV + LUU429HV	203161245	no certification found	no rating	not listed
48,000 · 3x3	LCN489HV + LUU480HHV	205788771	40,500	17.5 / 10.65	$3,912

A Montréal winter

Slide the temperature: the heat left at the ceiling

Montréal-Trudeau averages 12 days a year below −20°C (1991-2020 normals). At that point a standard cassette reaches its limit; the LGRED° version keeps going to −25°C.

The 3x3 cassettes

−25°C

Outdoor temperature

48,000 · LGRED°KUSXA481A

37,910 BTU/h

48,000 · standardKUSXB481A

outside LG’s range

42,000 · LGRED°KUSXA421A

36,100 BTU/h

42,000 · standardKUSXB421A

outside LG’s range

36,000 · LGRED°KUSXA361A

30,000 BTU/h

36,000 · standardKUSXB361A

outside LG’s range

30,000 · LGRED°KUSXA301A

28,250 BTU/h

30,000 · standardKUSXB301A

outside LG’s range

24,000 · LGRED°KUSXA241A

21,600 BTU/h

24,000 · standardKUSXB241A

outside LG’s range

Maximum output certified by NEEP (October 14, 2026), in BTU/h. “Outside LG’s range”: below the heating limit LG publishes for the KUSXB outdoor unit.

The 2x2 at 18,000 BTU/h

−20°C

Outdoor temperature

2x2 18,000 · LGRED°KNUDB181A + KUSXA181A

not published

2x2 18,000 · standardKNUDB181A + KUSXB181A

17,600 BTU/h

Maximum output certified by NEEP (October 14, 2026), in BTU/h. NEEP does not publish the LGRED° value at −20°C: it is tested at −15°C and −25°C.

At −15°C the 3x3 LGRED° units from 24,000 to 42,000 deliver at least their nominal capacity; the 48,000 delivers 93% (44,500 BTU/h). These are NEEP’s figures, model by model.

LogisVert

In 3x3, LGRED° does not get more

17cassettes out of 22 with a LogisVert amount

$3,912the highest, LCN489HV with LUU480HHV

Hydro-Québec pays on the certified rated output at −8°C, not on the −25°C limit. In 3x3, the LGRED° certifies as much or slightly less at −8°C than the standard unit, so its amount is equal or lower.

The small cassettes

Hydro-Québec requires at least 12,000 BTU/h of nominal cooling. The 9,000 2x2 units fall short, and ENERGY STAR certifies the 12,000 2x2 units, R-32 and R-410A alike, at 11,100 BTU/h: none gets an amount.

At 18,000 in 2x2 it is the other way around: the LGRED° gets $1,632 and the standard $1,560.

Rated output at −8°C and amount from the Hydro-Québec list of October 27, 2026, to be confirmed by Hydro-Québec. All 17 cassettes on the list are paid at the Cold Climate rate of $120 per 1,000 BTU/h.
3x3 (BTU/h)	Standard · at −8°C	Standard · amount	LGRED° · at −8°C	LGRED° · amount
24,000	17,000	$2,040	17,000	$2,040
30,000	21,000	$2,520	20,400	$2,448
36,000	24,800	$2,976	24,800	$2,976
42,000	30,000	$3,600	28,600	$3,432
48,000	32,200	$3,864	31,800	$3,816

The full program rules are explained once on the LG page.

Installation

Panels, options and place in a multi-zone

The right panel for the right head

PT-QAGW0: R-32 2x2 heads KNUDB091A, 121A and 181A.
PT-QCHW0: R-410A 2x2 LCN…HV4 heads, per LG Canada’s 2023 brochure, instead of the PT-QAGW0; we do not sell it separately.
PT-AAGW0: 3x3 heads, R-32 KNSCB as well as R-410A LCN249HV, LCN369HV and LCN429HV.
PT-AFGW0S: optional 3x3 Premium panel (PT-AFGW0 panel and PTAHMP0 purification kit); PTDCA decorative cover.

Our LG grilles are in LG parts and accessories.

What can be added

Fresh air: optional PTVK430 flange on the R-32 2x2 and 3x3.
Wi-Fi: LG lists the PWFMDD200 module for the R-32 cassettes KNUDB121A, KSUDB181A and KSUDA181A.
Cooling in cold weather: down to −15°C as standard; with the ZLABGP04B wind baffle, the KUSXA181A outdoor unit cools down to −20°C.
On a multi-zone: LG only accepts a cassette between 7,000 and 18,000 BTU/h; the 2x2 can be one of the heads, the 3x3 stays single-zone.

For a 2x2 in a multi-room system, see LG multi-zone.

No LG cassette job is published in our project gallery yet. Our LG projects, by city, are on the LG page.

See our LG projects

Frequently asked questions

What people ask us most

2x2 or 3x3: how do I choose?

By the room and the ceiling. The 2x2 (2 ft x 2 ft) runs from 9,000 to 18,000 BTU/h and can become a multi-zone head. The 3x3 (3 ft x 3 ft) runs from 24,000 to 48,000 BTU/h, always with its own outdoor unit.

How cold does an LG cassette keep heating?

Down to −20°C with a standard KUSXB outdoor unit, down to −25°C with an LGRED° KUSXA unit. In R-410A, the LCN489HV with the LUU480HHV also heats down to −25°C.

Does the LGRED° cassette get more LogisVert?

Not in 3x3: Hydro-Québec pays on the output at −8°C, where the LGRED° certifies as much as or slightly less than the standard unit. Its amount is equal or lower, from $2,040 to $3,816. At 18,000 in 2x2, the LGRED° gets $1,632 and the standard $1,560.

Why do the 9,000 and 12,000 cassettes get no amount?

Hydro-Québec requires at least 12,000 BTU/h of nominal cooling. The 9,000 falls under it, and ENERGY STAR certifies the 12,000 2x2 at 11,100 BTU/h.

Can an LG cassette run on a multi-zone system?

Yes for the 2x2: LG accepts cassettes between 7,000 and 18,000 BTU/h on its R-32 multi-zone units. The 3x3 only pairs with its own outdoor unit.

Is the grille included with the cassette?

LG lists the PT-AAGW0 grille as included with the 3x3 LGRED° system KSSCA421A. For each cassette, the quote states the grille or panel planned, and our LG grilles are also sold separately.

AirGreen · Air conditioning & heating

Your LG cassette, the right size and the right outdoor unit, chosen with you and installed by AirGreen.

We come see your home, choose the series and size with you, and hand you a clear quote with the AHRI number and the indicative LogisVert amount when the unit qualifies.

Book my free estimate 514 316-2973

Hydro-Québec does not solicit anyone by phone or door to door for LogisVert. If a call “from Hydro-Québec” offers you a heat pump, hang up.

RBQ 5645-9605-01Subclasses 15.8, 15.10 and 16

Free estimateAt home, no obligation

LogisVert checkedBy AHRI number, in Hydro-Québec’s tool

Showroom1370 Joliot-Curie Street, Suite 712, Boucherville

Sources checked

LG Electronics U.S.A., R-32 spec sheets KNUDB121A (2025), KSUDB181A, KSUDA181A and KSSCA421A (2026); LC369HV spec sheet (R-410A, 2023), read October 14, 2026.
LG Electronics Canada, “Residential and Light Commercial Systems” brochure 2023, English and French editions.
LG Electronics U.S.A., R32 Multi F and Multi F MAX Outdoor Unit Combination Data Manual and its with LGRED° version (PDF dated January 15, 2026).
NEEP ccASHP list, searched by AHRI number, read October 14, 2026.
ENERGY STAR, Certified Air-Source Heat Pumps (dataset w7cv-9xjt), re-read October 27, 2026.
Hydro-Québec, LogisVert list of October 27, 2026 and participation guide version 1.10 (September 15, 2026).
Environment and Climate Change Canada, 1991-2020 normals, Montréal-Trudeau airport, ID 7025250.
AirGreen, “Nos réalisations” blog and airgreen.ca product pages, October 27, 2026.

LogisVert amounts are indicative: Hydro-Québec confirms them when you apply. LG’s warranty is explained once on the LG page. Prices on quote.

The LG cassette shop