Furnaces
Dependable warmth and efficiency
When temperatures drop, Ameristar gas furnaces will help keep your home toasty. In addition to providing consistent, quiet comfort, these units are designed and manufactured for efficiency and long-term dependability that outclasses any other furnace you’ll find in a similar price range.
A801X
Furnace

System Features
- 80% AFUE
- Constant torque (ECM) motor
- 34″ cabinet height on all models
- 2-5 ton models available in each family
- Multiple venting options offered in each poise
- Durable, galvanized steel cabinet
- Select models compliant with California 40ng/J Low-NOx requirements (see specifications below)
- Assembled in Trenton, New Jersey
A801X 80% AFUE Multi-Position Furnaces
Model | CA Low NOx Model Number | Input BTU/h | Nominal Airflow (Tons) | Dimensions (in) | ||
H | W | D | ||||
A801X026AM2SCA | A801X026AM2TCA | 26,000 | 2 | 34 | 14.5 | 28.75 |
A801X040AM3SCA | A801X040AM3TCA | 40,000 | 2-3 | 34 | 14.5 | 28.75 |
A801X040BM2SCA | A801X040BM2TCA | 40,000 | 2 | 34 | 17.5 | 28.75 |
A801X060BM3SCA | A801X060BM3TCA | 60,000 | 3 | 34 | 17.5 | 28.75 |
A801X060BM4SCA | A801X060BM4TCA | 60,000 | 4 | 34 | 17.5 | 28.75 |
A801X080BM4SCA | A801X080BM4TCA | 80,000 | 3-4 | 34 | 17.5 | 28.75 |
A801X080CM5SCA | A801X080CM5TCA | 80,000 | 4-5 | 34 | 21 | 28.75 |
A801X100CM5SCA | A801X100CM5TCA | 100,000 | 4-5 | 34 | 21 | 28.75 |
A801X120DM5SCA | A801X120DM5TCA | 120,000 | 5 | 34 | 24.5 | 28.75 |
AFUE stands for Annual Fuel Utilization Efficiency, which measures a furnace’s heating efficiency. The higher the AFUE, the less energy you’ll use to maintain pleasant temperatures.
*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.
A801X Furnace Energy and Owner Guides
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A801X Furnace
A951X
Furnace

System Features
- Up to 96% AFUE
- Constant torque (ECM) motor
- 34″ cabinet height on all models
- 2-5 ton models available in each family
- Stainless steel primary and secondary heat exchangers
- Compliant with California 40ng/J Low-NOx requirements
- Energy Star® Certified
- Assembled in Trenton, New Jersey
A951X 95-96% AFUE Upflow Furnaces
Model | Input BTU/h | Nominal Airflow (Tons) | AFUE | Dimensions (in) | ||
H | W | D | ||||
A951X040BU3SAB | 40,000 | 2-3 | 96% | 34 | 17.5 | 28.75 |
A951X060BU4SAB | 60,000 | 3-4 | 96% | 34 | 17.5 | 28.75 |
A951X080BU4SAB | 80,000 | 3-4 | 96% | 34 | 17.5 | 28.75 |
A951X080CU5SAB | 80,000 | 4-5 | 96% | 34 | 21 | 28.75 |
A951X100CU5SAB | 100,000 | 4-5 | 95% | 34 | 21 | 28.75 |
A951X120DU5SAB | 120,000 | 5 | 95% | 34 | 24.5 | 28.75 |
A951X 95-96% AFUE Downflow Furnaces
Model | Input BTU/h | Nominal Airflow (Tons) | AFUE | Dimensions (in) | ||
H | W | D | ||||
A951X040BD3SAB | 40,000 | 2-3 | 96% | 34 | 17.5 | 28.75 |
A951X060BD3SAB | 60,000 | 3 | 95% | 34 | 17.5 | 28.75 |
A951X080BD4SAB | 80,000 | 4 | 95% | 34 | 17.5 | 28.75 |
A951X100CD5SAB | 100,000 | 5 | 95% | 34 | 21 | 28.75 |
A951X120DD5SAB | 120,000 | 5 | 95% | 34 | 24.5 | 28.75 |
AFUE stands for Annual Fuel Utilization Efficiency, which measures a furnace’s heating efficiency. The higher the AFUE, the less energy you’ll use to maintain pleasant temperatures.
*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.
A951X Furnace Energy and Owner Guides
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A951X Furnace
A952V
Furnace

System Features
- 96% AFUE
- Variable speed (ECM) motor
- 34″ cabinet height on all models
- 2-5 ton models available in each family
- Stainless steel primary and secondary heat exchangers
- Compliant with California 40ng/J Low-NOx requirements
- Energy Star® Certified
- Assembled in Trenton, New Jersey
A952V 96% AFUE Upflow Furnaces
Model | Input BTU/h | Nominal Airflow (Tons) | AFUE | Dimensions (in) | ||
H | W | D | ||||
A952V040BU3SAB | 40,000 | 3 | 96% | 34 | 17.5 | 28.75 |
A952V060BU3SAB | 60,000 | 3 | 96% | 34 | 17.5 | 28.75 |
A952V060BU4SAB | 60,000 | 4 | 96% | 34 | 17.5 | 28.75 |
A952V080BU4SAB | 80,000 | 4 | 96% | 34 | 17.5 | 28.75 |
A952V080CU5SAB | 80,000 | 5 | 96% | 34 | 21 | 28.75 |
A952V100CU4SAB | 100,000 | 4 | 96% | 34 | 21 | 28.75 |
A952V100CU5SAB | 100,000 | 5 | 96% | 34 | 21 | 28.75 |
A952V120DU5SAB | 120,000 | 5 | 96% | 34 | 24.5 | 28.75 |
A952V 96% AFUE Downflow Furnaces
Model | Input BTU/h | Nominal Airflow (Tons) | AFUE | Dimensions (in) | ||
H | W | D | ||||
A952V040BD3SAB | 40,000 | 3 | 96% | 34 | 17.5 | 28.75 |
A952V060BD3SAB | 60,000 | 3 | 96% | 34 | 17.5 | 28.75 |
A952V080BD4SAB | 80,000 | 4 | 96% | 34 | 17.5 | 28.75 |
A952V100CD4SAB | 100,000 | 4 | 96% | 34 | 21 | 28.75 |
A952V100CD5SAB | 100,000 | 5 | 96% | 34 | 21 | 28.75 |
A952V120DD5SAB | 120,000 | 5 | 96% | 34 | 24.5 | 28.75 |
AFUE stands for Annual Fuel Utilization Efficiency, which measures a furnace’s heating efficiency. The higher the AFUE, the less energy you’ll use to maintain pleasant temperatures.
*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.
A952V Furnace Energy and Owner Guides
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A952V Furnace
M801P
Furnace

System Features
- All furnace models feature a standard silicon nitride igniter
- 80% furnace models feature aluminized steel heat exchangers to conduct heat quickly and increase durability
- Ameristar furnaces are built for flexibility to suit varied installations
- 80% furnaces are fully convertible to either natural gas or propane, making them suitable for use in any area
- Cabinets are constructed of corrosion-resistant galvanized steel
80% AFUE* Furnaces
Model | Tonnage | AFUE | BTU Input | Dimensions (in) | ||
H | W | D | ||||
M801P040AU24AAA | 2.0 | 80 | 40,000 | 40 | 14 | 28 |
M801P060AU24AAA | 2.0 | 80 | 60,000 | 40 | 14 | 28 |
M801P060AD24AAA | 2.0 | 80 | 60,000 | 40 | 14 | 28 |
M801P060AU36AAA | 3.0 | 80 | 60,000 | 40 | 14 | 28 |
M801P060AD36AAA | 3.0 | 80 | 60,000 | 40 | 14 | 28 |
M801P080BU36AAB | 3.0 | 80 | 80,000 | 40 | 17.5 | 28 |
M801P080BU48AAA | 4.0 | 80 | 80,000 | 40 | 17.5 | 28 |
M801P080BD45AAA | 4.0 | 80 | 80,000 | 40 | 17.5 | 28 |
M801P100BU36AAA | 3.0 | 80 | 100,000 | 40 | 17.5 | 28 |
M801P100CU48AAA | 4.0 | 80 | 100,000 | 40 | 21 | 28 |
M801P100CD48AAA | 4.0 | 80 | 100,000 | 40 | 21 | 28 |
M801P100CU60AAA | 5.0 | 80 | 100,000 | 40 | 21 | 28 |
M801P100CD60AAA | 5.0 | 80 | 100,000 | 40 | 21 | 28 |
M801P120DU60AAA | 5.0 | 80 | 120,000 | 40 | 24.5 | 28 |
M801P120DD60AAA | 5.0 | 80 | 120,000 | 40 | 24.5 | 28 |
M801P140DU60AAA | 5.0 | 80 | 140,000 | 40 | 24.5 | 28 |
M801P140DD60AAA | 5.0 | 80 | 140,000 | 40 | 24.5 | 28 |
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.
M801P Furnace Energy and Owner Guides
M801P Furnace
M951P
Furnace

System Features
- 95% AFUE single-stage for the level of comfort and efficiency you require
- Fully convertible to work with either natural gas or propane, making them suitable for use in any area
- Works with your outdoor system to circulate cool air in summer, helping you stay comfortable all year long
- Aluminized steel heat exchangers conduct heat quickly and increase durability
- Cabinets are constructed of corrosion-resistant galvanized steel
- Built for flexibility to suit varied installation situations.
95+% AFUE Furnaces
Single-Stage Model | Tonnage | AFUE 1 | BTU Input | Dimensions (in) | ||
H | W | D | ||||
M951P040BU24AAA | 2.0 | 95 / 94.2 | 40,000 | 40 | 17.5 | 28 |
M951P040BD24AAA | 2.0 | 95 | 40,000 | 40 | 17.5 | 28 |
M951P060BU36AAA | 3.0 | 95 / 94.2 | 60,000 | 40 | 17.5 | 28 |
M951P065BD42AAA | 3.5 | 95 | 60,000 | 40 | 17.5 | 28 |
M951P080BU42AAA | 3.5 | 95 / 94.2 | 80,000 | 40 | 17.5 | 28 |
M951P085CD48AAA | 4.0 | 95 | 80,000 | 40 | 21 | 28 |
M951P100CU48AAA | 4.0 | 95 / 94.2 | 97,000 | 40 | 21 | 28 |
M951P100DU60AAA | 5.0 | 95 / 94.2 | 97,000 | 40 | 24.5 | 28 |
M951P110DD60AAA | 5.0 | 95 | 110,000 | 40 | 24.5 | 28 |
M951P120DU60AAA | 5.0 | 95 / 94.2 | 110,000 | 40 | 24.5 | 28 |
AFUE stands for Annual Fuel Utilization Efficiency, which measures a furnace’s heating efficiency. The higher the AFUE, the less energy you’ll use to maintain pleasant temperatures.
*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.
M951P Furnace Energy and Owner Guides
M951P Furnace
M952V
Furnace

System Features
- Up to 97% AFUE two-stage (better temperature control and quieter operation) for the level of comfort and efficiency you require
- Fully convertible to work with either natural gas or propane, making them suitable for use in any area
- Works with your outdoor system to circulate cool air in summer, helping you stay comfortable all year long
- Aluminized steel heat exchangers conduct heat quickly and increase durability
- Cabinets are constructed of corrosion-resistant galvanized steel
- Built for flexibility to suit varied installation situations.
- Variable speed indoor systems maintain constant and consistent airflow that improves comfort and efficiency in your home.
- M95V2 models meet EnergyStar requirements
95+% AFUE Furnaces
Variable-Speed Model | Tonnage | AFUE | BTU Input | Dimensions (in) | ||
H | W | D | ||||
M952V060BU36AAA | 3.0 | 97 | 60,000 | 40 | 17.5 | 28 |
M952V080BU36AAA | 3.0 | 97 | 80,000 | 40 | 17.5 | 28 |
M952V100CU48AAA | 4.0 | 96.7 | 100,000 | 40 | 21 | 28 |
M952V120DU60AAA | 5.0 | 96.7 | 120,000 | 40 | 24.5 | 28 |
M952V060BD36AAA | 3.0 | 96 | 60,000 | 40 | 17.5 | 28 |
M952V080BD36AAA | 3.0 | 96 | 80,000 | 40 | 17.5 | 28 |
M952V100CD48AAA | 4.0 | 96 | 100,000 | 40 | 21 | 28 |
M952V120DD60AAA | 5.0 | 96 | 120,000 | 40 | 24.5 | 28 |
AFUE stands for Annual Fuel Utilization Efficiency, which measures a furnace’s heating efficiency. The higher the AFUE, the less energy you’ll use to maintain pleasant temperatures.
*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.