Name: MG 21 SEER2 Inverter
Brand: MG

Features

21 SEER2 – High Efficiency
Cooling & Heating – Year-Round Comfort
R454B – Eco-Friendly Refrigerant
Low Noise – Quiet Operation Inside & Out
Wide Operating Range – Built For Extreme Conditions
Reliable Performance – Tested For Durability
High Efficiency Inverter Technology
R454B Refrigerant
Cooling & Heating Heat Pump
Wide Operating Temperature Range
DC Inverter Fan Motor (Indoor & Outdoor)
Intelligent Defrosting System

Available model 18K BTU: 208-230 V / 1 Ph / 60 Hz – Up to 380 ft²
Available model 24K BTU: 208-230 V / 1 Ph / 60 Hz – Up to 480 ft²
MAX PIPE LENGTH: 65 ft
MAX HEIGHT DIFFERENCE: 49 ft
REFRIGERANT ADDITION: 0.11 oz/ft
R454B badge: R454B NEXT GENERATION REFRIGERANT

Acoustics

Quiet enough to forget it’s on.

Compare this unit with everyday sounds. Tap a level to see and hear the difference.

32dB(A)

Reference levels are typical approximations. Wave height follows perceived loudness; the audio is a simulated airflow, not a recording.

Dimensions

Drawn to scale.

Indoor and outdoor units at the same scale, in inches. Net unit dimensions.

Inside the system

MG 21 SEER2 Inverter

INSTALLATION FLEXIBILITY

MAX PIPE LENGTH: 65 ft
MAX HEIGHT DIFFERENCE: 49 ft
REFRIGERANT ADDITION: 0.11 oz/ft

CONNECTING PIPE

18K: Liquid: 1/4" Gas: 3/8"
24K: Liquid: 1/4" Gas: 1/2"

Why it pays off

ENERGY SAVING

Reduce energy consumption

POWERFUL PERFORMANCE

Fast cooling and heating

RELIABLE QUALITY

Built with premium components

COMFORT ALL YEAR

Perfect climate in every season

Ideal for

LARGE HOMES
OFFICES
SHOPS & RETAIL
RESIDENTIAL PROJECTS

Technical specifications

MG 21 SEER2 Inverter, in full.

18K (208-230V)

Electrical

Power supply208-230 V / 1 Ph / 60 Hz

Rated Input (Cooling) [W]1,700

Rated Input (Heating) [W]1,530

Rated Current (Cooling) [A]7.7

Rated Current (Heating) [A]6.9

Min. Circuit Ampacity [A]12

Operating range

Cooling Capacity (95°F) [Btu/h]18,000

Cooling Capacity Range [Btu/h]4,090 ~ 18,400

Heating Capacity (47°F) [Btu/h]19,000

Heating Capacity (17°F) [Btu/h]11,000

Max. Heating Capacity (5°F) [Btu/h]12,500

Max. Heating Capacity (-4°F) [Btu/h]11,000

Efficiency

EER2 (95°F) [Btu/Wh]11.0

SEER2 [Btu/Wh]21.0

HSPF2 Region IV [Btu/Wh]9.5

HSPF2 Region V [Btu/Wh]8.2

COP2 (47°F) [W/W]3.41

Performance

Indoor Airflow (Turbo/High/Med./Low/Mute) [CFM]617 / 575 / 511 / 411 / 382

Sound

Indoor Noise Level (Turbo/Hi/Mid/Lo/Mute) [dB(A)]49 / 47 / 42 / 37 / 32

Outdoor Noise Level [dB(A)]55

General

Moisture Removal [US pt/h]4.65

Shipping: 40'HC (IN+OUT)196

Shipping: 40'GP (IN+OUT)180

Shipping: 20'GP (IN+OUT)160

Shipping: Indoor (pcs)480 / 417 / 198

Shipping: Outdoor (pcs)290 / 213 / 102

Shipping: Indoor Pieces (stack)6

Shipping: Outdoor Pieces (stack)4

Indoor unit

SIZE39.75 x 12.38 x 8.63"

NET27.6 lb

GROSS33.7 lb

Outdoor unit

SIZE34.00 x 13.75 x 23.75"

NET70.5 lb

GROSS81.6 lb

Refrigerant & piping

Liquid Pipe1/4"

Gas Pipe3/8"

Packing

Indoor PACK43.13 x 15.38 x 11.75"

Outdoor PACK35.38 x 15.88 x 25.38"

Compare all capacities

Parameter	18K (208-230V)	24K (208-230V)
Power supply	208-230 V / 1 Ph / 60 Hz	208-230 V / 1 Ph / 60 Hz
Cooling Capacity (95°F) [Btu/h]	18,000	24,000
Cooling Capacity Range [Btu/h]	4,090 ~ 18,400	5,100 ~ 25,200
EER2 (95°F) [Btu/Wh]	11.0	11.0
SEER2 [Btu/Wh]	21.0	21.0
Heating Capacity (47°F) [Btu/h]	19,000	24,600
Heating Capacity (17°F) [Btu/h]	11,000	15,600
HSPF2 Region IV [Btu/Wh]	9.5	9.5
HSPF2 Region V [Btu/Wh]	8.2	8.2
COP2 (47°F) [W/W]	3.41	3.41
Max. Heating Capacity (5°F) [Btu/h]	12,500	16,400
Max. Heating Capacity (-4°F) [Btu/h]	11,000	14,600
Rated Input (Cooling) [W]	1,700	2,080
Rated Input (Heating) [W]	1,530	1,800
Rated Current (Cooling) [A]	7.7	9.4
Rated Current (Heating) [A]	6.9	8.2
Min. Circuit Ampacity [A]	12	17
Indoor Airflow (Turbo/High/Med./Low/Mute) [CFM]	617 / 575 / 511 / 411 / 382	847 / 705 / 588 / 470 / 412
Indoor Noise Level (Turbo/Hi/Mid/Lo/Mute) [dB(A)]	49 / 47 / 42 / 37 / 32	52 / 50 / 44 / 38 / 36
Outdoor Noise Level [dB(A)]	55	58
Moisture Removal [US pt/h]	4.65	5.49
SIZE	39.75 x 12.38 x 8.63"	46.88 x 14.13 x 10.25"
NET	27.6 lb	36.4 lb
GROSS	33.7 lb	43.0 lb
Liquid Pipe	1/4"	1/4"
Gas Pipe	3/8"	1/2"
Indoor PACK	43.13 x 15.38 x 11.75"	49.63 x 16.88 x 12.88"
Outdoor PACK	35.38 x 15.88 x 25.38"	37.75 x 16.88 x 28.88"
Shipping: 40'HC (IN+OUT)	196	154
Shipping: 40'GP (IN+OUT)	180	140
Shipping: 20'GP (IN+OUT)	160	130
Shipping: Indoor (pcs)	480 / 417 / 198	366 / 304 / 143
Shipping: Outdoor (pcs)	290 / 213 / 102	200 / 195 / 90
Shipping: Indoor Pieces (stack)	6	6
Shipping: Outdoor Pieces (stack)	4	3