Air Handlers
Quiet, efficient air circulation for any size space
Quiet efficiency is the hallmark of Ameristar’s line of air handlers as they circulate warm or cool air throughout your home. These units are designed for flexibility in fitting a variety of installation configurations and locations, so you can be confident there’s one that will fit your home.
A4AH4
Air Handler

System Features
- All-aluminum coil
- Factory-installed flow control to support ratings
- Fully insulated galvanized steel cabinet
- Multi-speed fan motors
- Assembled in Vidalia, Georgia
A4AH4 Multi-Position Air Handler
Model | Capacity (Tons) | Motor Type | Flow Control | Electric Heat | Dimensions (in) | ||
H | W | D | |||||
A4AH4P18A1B60A | 1.5 | PSC | Orifice | Field Installed | 45.02 | 18.50 | 21.13 |
A4AH4P24A1B60A | 2 | PSC | Orifice | Field Installed | 45.02 | 18.50 | 21.13 |
A4AH4P30A1B60A | 2.5 | PSC | Orifice | Field Installed | 45.02 | 18.50 | 21.13 |
A4AH4P36A1B30A | 3 | PSC | TXV | Field Installed | 45.02 | 18.50 | 21.13 |
A4AH4P37A1C30A | 3 | PSC | TXV | Field Installed | 51.27 | 23.50 | 21.13 |
A4AH4E42A1C30A | 3.5 | CTM | TXV | Field Installed | 51.27 | 23.50 | 21.13 |
A4AH4E48A1C30A | 4 | CTM | TXV | Field Installed | 51.27 | 23.50 | 21.13 |
A4AH4E60A1C30A | 5 | CTM | TXV | Field Installed | 51.27 | 23.50 | 21.13 |
All models feature 3/8″ liquid line.
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.
A4AH4 Air Handler Owner Guide
A4AH4 Air Handler
A4AH6
Air Handler

System Features
- All-aluminum coil
- Factory-installed flow control to support ratings
- Fully insulated galvanized steel cabinet
- Multi-speed fan motors
- Assembled in Vidalia, Georgia
A4AH6 Multi-Position Air Handler
Model | Capacity (Tons) | Motor Type | Flow Control | Electric Heat | Dimensions (in) | ||
H | W | D | |||||
A4AH6E19A1B30AA | 1.5 | PSC | Orifice | Field Installed | 45 | 18.5 | 21 |
A4AH6E31A1B30AA | 2.5 | PSC | Orifice | Field Installed | 46.8 | 18.5 | 21 |
A4AH6E43A1C30AA | 3.5 | PSC | TXV | Field Installed | 51.3 | 23.5 | 21 |
A4AH6E49A1C30AA | 4 | PSC | TXV | Field Installed | 55.9 | 23.5 | 21 |
A4AH6E61A1C30AA | 5 | PSC | TXV | Field Installed | 55.9 | 23.5 | 21 |
A4AH6V24A1B30AA | 2 | PSC | TXV | Field Installed | 46.8 | 18.5 | 21 |
A4AH6V30A1B30AA | 2.5 | PSC | TXV | Field Installed | 46.8 | 18.5 | 21 |
A4AH6V36A1C30AA | 3 | PSC | TXV | Field Installed | 51.3 | 23.5 | 21 |
A4AH6V42A1C30AA | 3.5 | PSC | TXV | Field Installed | 51.3 | 23.5 | 21 |
A4AH6V48A1D30AA | 4 | PSC | TXV | Field Installed | 55.9 | 23.5 | 21 |
A4AH6V60A1D30AA | 5 | PSC | TXV | Field Installed | 53.9 | 26.5 | 21 |
A4AH6V48A1C30AA | 4 | PSC | TXV | Field Installed | 55.9 | 23.5 | 21 |
A4AH6V60A1C30AA | 5 | PSC | TXV | Field Installed | 53.9 | 26.5 | 21 |
All models feature 3/8″ liquid line.
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.
A4AH6 Air Handler Owner Guide
A4AH6 Air Handler
TMM4/TMM5
Upflow Air Handler

System Features
- Ameristar air handlers are adaptable to both 13 and 14 SEER models
- 2 – 3 ton models available
- TMM4B and TMM5B models include all aluminum coil
- Painted metal cabinet with foil face insulation
- Ameristar air handlers are upflow only and can be used in various applications: Wall mount, stud mount, over the water heater mount
- Auxiliary heaters available in 5kw–10kw
- ECM constant torque motor
- Factory installed R-410A thermal expansion valve on TMM5 models
- Factory installed orifice on TMM4 models
TMM4B Upflow Air Handlers
Models* | Height (in) | Width (in) | Depth (in) |
TMM4B0A18S21SA | 36.50 | 20.50 | 15.00 |
TMM4B0A24S21SA | 36.50 | 20.50 | 15.00 |
TMM4B0B30S21SA | 39.50 | 22.00 | 19.00 |
TMM4B0B36S31SA | 39.50 | 22.00 | 19.00 |
TMM5B Upflow Air Handlers
Models | Height (in) | Width (in) | Depth (in) |
TMM5B0A24M21SA | 36.50 | 20.50 | 15.00 |
TMM5B0B30M21SA | 39.50 | 22.00 | 19.00 |
TMM5B0B36M31SA | 39.50 | 22.00 | 19.00 |
All models feature 3/8″ liquid line.
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.
TMM4/TMM5 Upflow Air Handler Owner Guide
TMM4/TMM5 Upflow Air Handler
M4AH3/M4AH4
Convertible Air Handler

System Features
- Ameristar air handlers are adaptable to both 13 and 14 SEER models
- 1.5 – 5 ton models available
- Painted, galvanized steel cabinets resist rust
- Ameristar air handlers offer multiple airflow designs for convertibility: Vertical upflow/downflow; Horizontal left or right
- Auxiliary heaters available in 5kw–20kw
- Dual drainage spouts offer flexibility in installation options
- Removable front panel and blower and coil assemblies that slide out allow easy access for maintenance and troubleshooting
M4AH3/M4AH4 Convertible Air Handler
13 SEER Models | Tonnage | Dimensions (in) | ||
H | W | D | ||
M4AH3018A1000AA | 1.5 | 41.38 | 18.13 | 20.50 |
M4AH3024A1000AA | 2.0 | 41.38 | 18.13 | 20.50 |
M4AH3030A1000AA | 2.5 | 41.38 | 18.13 | 20.50 |
M4AH3036A1000AA | 3.0 | 46.50 | 19.63 | 21.63 |
M4AH3042A1000AA | 3.5 | 46.50 | 19.63 | 21.63 |
M4AH3048A1000AA | 4.0 | 54.50 | 22.00 | 24.00 |
M4AH3060A1000AA | 5.0 | 54.50 | 22.00 | 24.00 |
14 SEER Models | Tonnage | Dimensions (in) | ||
H | W | D | ||
M4AH3018A1000AA** | 1.5 | 41.38 | 18.13 | 20.50 |
M4AH4025A1000AA | 2.0 | 46.50 | 19.63 | 21.63 |
M4AH4032A1000AA | 2.5 | 46.50 | 19.63 | 21.63 |
M4AH3036A1000AA** | 3.0 | 46.50 | 19.63 | 21.63 |
M4AH4044A1000AA | 3.5 | 54.50 | 22.00 | 24.00 |
M4AH3048A1000AA** | 4.0 | 54.50 | 22.00 | 24.00 |
M4AH3060A1000AA** | 5.0 | 54.50 | 22.00 | 24.00 |
All models feature 3/8″ liquid line.
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.
M4AH3/M4AH4 Convertible Air Handler Owner Guide
M4AH3/M4AH4 Convertible Air Handler
M4AH4/M4AH6
Convertible Air Handler

System Features
- Ameristar air handlers are adaptable to both 13, 14 and 16 SEER models
- 1.5 – 5 ton models available
- All-aluminum coil design
- ECM blower motors achieve higher AHRI ratings
- Painted, galvanized steel cabinets resist rust
- Ameristar air handlers offer multiple airflow designs for convertibility: Vertical upflow/downflow; Horizontal left or right
- Auxiliary heaters available in 5kw–20kw
- Dual drainage spouts offer flexibility in installation options
- Removable front panel and blower and coil assemblies that slide out allow easy access for maintenance and troubleshooting
M4AH4/M4AH6 Convertible Air Handler
ECM Models | Tonnage | Dimensions (in) | ||
H | W | D | ||
M4AH4E26B1A00A | 2.0 | 41.38 | 18.13 | 20.50 |
M4AH4E37B1B00A | 3.0 | 46.50 | 19.63 | 21.63 |
M4AH4E61B1C00A | 5.0 | 54.50 | 22.00 | 24.00 |
M4AH6E60B1C00A | 5.0 | 54.50 | 22.00 | 24.00 |
PSC Models | Tonnage | Dimensions (in) | ||
H | W | D | ||
M4AH4P18B1A00A | 1.5 | 41.38 | 18.13 | 20.50 |
M4AH4P25B1B00A | 2.0 | 46.50 | 19.63 | 21.63 |
M4AH4P32B1B00A | 2.5 | 46.50 | 19.63 | 21.63 |
M4AH3P36B1B00A | 3.0 | 46.50 | 19.63 | 21.63 |
M4AH4P44B1C00A | 3.5 | 54.50 | 22.00 | 24.00 |
M4AH4P48B1C00A | 4.0 | 54.50 | 22.00 | 24.00 |
M4AH4P60B1C00A | 5.0 | 54.50 | 22.00 | 24.00 |
All models feature 3/8″ liquid line.
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.
M4AH4/M4AH6 Convertible Air Handler Owner Guide
M4AH4/M4AH6 Convertible Air Handler
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