Ductless Systems

Heating and cooling right where you need it

Ameristar’s ductless systems provide the utmost in flexibility when it comes to temperature control. With single-zone and multi-zone options, you can fix hot and cold spots in specific rooms, replace inefficient space heaters and noisy window units, or increase the comfort in room additions. In addition to being affordable to buy and operate, ductless systems are easy to install—no expensive ductwork needed!

23 SEER Single-Zone

Ductless System

System Features

Available for installations in all regions (23 SEER)
9000, 12000, 18000, and 24000 BTUH models available
Quiet operation (29-48 db)
Handheld remote control included
Heating capability down to -22°F
Inverter driven (variable speed compressor)
Includes base pan heaters
Blue Fin Coastal coating
AHRI Certified Systems
Energy Star® Rated

23 SEER HP Single Zone Ductless Systems

Outdoor	Indoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Gas Line	Liquid Line	Max Overcurrent Protection	Low Ambient Heating Capability in Fahrenheit
Outdoor	Indoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Gas Line	Liquid Line	Max Overcurrent Protection	Low Ambient Heating Capability in Fahrenheit	M4THS2309A11NA	M4MHW2309A1N0A	23	11	14.3	9100	11000	208-230/60/1	3/8″	1/4″	15	-22°-86°F
M4THS2312A11NA	M4MHW2312A1N0A	23	11	13	12000	12000	208‑230/60/1	1/2″	1/4″	15	-22°-86°F
M4THS2318A11NA	M4MHW2318A1N0A	23	11	13	18200	18200	208‑230/60/1	5/8″	1/4″	20	-22°-86°F
M4THS2324A11NA	M4MHW2324A1N0A	23	11	13	22000	24000	208‑230/60/1	5/8″	1/4″	25	-22°-86°F

SEER, or Seasonal Energy Efficiency Ratio, measures how efficiently a unit can cool your home in the summer. The higher the SEER number, the less energy you’ll use.

*Registered Limited Warranty terms are applicable if the products are registered within 60 days of installation. Products can be registered online or by phone at 855-260-2975, otherwise Ameristar’s Base Limited Warranty terms will apply. Base Limited Warranty terms can be found online at ameristarhvac.com. Warranties are for residential use only; some restrictions may apply. Ask your installer for full warranty information at the time of purchase.

115 Volt Single-Zone

Ductless System

System Features

Available for installations in all regions (20-22 SEER)
9000 and 12000 BTUH models available
Quiet operation (28-36 db)
Handheld remote control included
Inverter driven (variable speed compressor)
Includes base pan heaters
Blue Fin Coastal coating
Meets Energy Star® requirements (9000 BTUH system only)
AHRI Certified Systems

115 Volt Single Zone Ductless Systems

Outdoor	Indoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Gas Line	Liquid Line	Max Overcurrent Protection
Outdoor	Indoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Gas Line	Liquid Line	Max Overcurrent Protection	M4THS2209A91N*	M4MHW2209A9N0*	22	9.8	13.2	9000	9500	115/60/1	3/8″	1/4″	30
M4THS2212A91N	M4MHW2212A9N0	20	9.6	12	12000	13000	115/60/1	3/8″	1/4″	30

Energy Star rated system*

SEER, or Seasonal Energy Efficiency Ratio, measures how efficiently a unit can cool your home in the summer. The higher the SEER number, the less energy you’ll use.

17 SEER Single-Zone

Ductless System

System Features

Available for installations in all regions (15 SEER)
9000, 12000, 18000, and 24000 BTUH models available
Quiet operation (32-33 db)
Handheld remote control included
Inverter driven (variable speed compressor)
Includes base pan heaters
Blue Fin Coastal coating
AHRI Certified Systems

17 SEER HP Single Zone Ductless Systems

Outdoor	Indoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Gas Line	Liquid Line	Max Overcurrent Protection
Outdoor	Indoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Gas Line	Liquid Line	Max Overcurrent Protection	M4THS1709A11NA	M4MHW1709A1N0A	17	9	10.25	9100	9500	208‑230/60/1	3/8″	1/4″	15
M4THS1712A11NA	M4MHW1712A1N0A	17	9	9.25	12000	13000	208‑230/60/1	3/8″	1/4″	15
M4THS1718A11NA	M4MHW1718A1N0A	17	9	8.53	17400	18000	208‑230/60/1	1/2″	1/4″	20
M4THS1724A11NA	M4MHW1724A1N0A	17	10	11.25	22000	22400	208‑230/60/1	5/8″	1/4″	30

17 SEER AC Single Zone Ductless Systems

Outdoor	Indoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Gas Line	Liquid Line	Max Overcurrent Protection
Outdoor	Indoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Gas Line	Liquid Line	Max Overcurrent Protection	M4TCS1709A11N	M4MCW1709A1N0	17	–	10.9	9100	–	208‑230/60/1	3/8″	1/4″	15
M4TCS1712A11N	M4MCW1712A1N0	17	–	9.55	12000	–	208‑230/60/1	3/8″	1/4″	15
M4TCS1718A11N	M4MCW1718A1N0	17	–	9.2	17400	–	208‑230/60/1	1/2″	1/4″	20
M4TCS1724A11N	M4MCW1724A1N0	17	–	10.95	22000	–	208‑230/60/1	5/8″	1/4″	30

SEER, or Seasonal Energy Efficiency Ratio, measures how efficiently a unit can cool your home in the summer. The higher the SEER number, the less energy you’ll use.

15 SEER Multi-Zone

Ductless System

System Features

Available for installations in all regions (15 SEER)
Connect up to five indoor units
Outdoor sound range of 56-59 db
Port adapters included
9000, 12000, 18000, and 24000 BTUH High Wall mounted indoor models available
Handheld remote control included with each indoor unit

15 SEER Multi-Zone Outdoor Heat Pump

Outdoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Number of Ports	Gas Line	Liquid Line	Max Overcurrent Protection
Outdoor	SEER	HSPF	EER	Cooling Capacity (BTUH)	Heating Capacity (BTUH)	Voltage	Number of Ports	Gas Line	Liquid Line	Max Overcurrent Protection	M4THM1518A12N	15	8.2	10.00	18000	19000	208‑230/60/1	2	3/8″ (2)	1/4″ (2)	20
M4THM1524A13N	15	8.2	8.00	26000	29000	208‑230/60/1	3	3/8″ (3)	1/4″ (3)	30
M4THM1530A14N	15	8.2	8.00	29000	30400	208‑230/60/1	4	3/8″ (4)	1/4″ (4)	45
M4THM1536A14N	15	8.2	7.75	34000	35800	208‑230/60/1	4	3/8″ (2) 1/2″ (1) 5/8″ (1)	1/4″ (3) 3/8″ (1)	45
M4THM1542A15N	15	8.2	9.1	40000	44500	208‑230/60/1	5	3/8″ (2) 1/2″ (2) 5/8″ (1)	1/4″ (4) 3/8″ (1)	50

15 SEER High Wall Mounted Indoor Unit

Indoor	Nominal Capacity (BTUH)	Voltage	Gas Line	Liquid Line
Indoor	Nominal Capacity (BTUH)	Voltage	Gas Line	Liquid Line	M4MHW1509A1N0	9000	208‑230/60/1	3/8″	1/4″
M4MHW1512A1N0	12000	208‑230/60/1	3/8″	1/4″
M4MHW1518A1N0	18000	208‑230/60/1	1/2″	1/4″
M4MHW1524A1N0	24000	208‑230/60/1	5/8″	1/4″

SEER, or Seasonal Energy Efficiency Ratio, measures how efficiently a unit can cool your home in the summer. The higher the SEER number, the less energy you’ll use.