When selecting a gas furnace, the most important factors are efficiency, size, and reliability. The Goodman 120,000 BTU 96% AFUE Furnace stands out as the overall best choice for its high efficiency and performance. For budget-conscious buyers, the ACiQ 40000 BTU 80% AFUE Furnace offers solid value, while those seeking premium features should consider the Goodman 120,000 BTU 96% AFUE Two-Stage Furnace. Each option involves tradeoffs, like upfront cost versus long-term savings or size and installation considerations. Continue reading for a detailed breakdown of these options and how to choose the right gas furnace for your needs.
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Key Takeaways
- High-efficiency models like the Goodman 96% AFUE Two-Stage Furnace offer significant energy savings but come at a higher initial cost.
- Size and capacity are critical: choosing a furnace that matches your home’s heating load prevents inefficiency and uneven heating.
- Multi-stage furnaces provide more consistent heat and better efficiency, but are generally more expensive than single-stage models.
- Budget options like the ACiQ 80% AFUE furnace deliver reliable performance for less, though they may lack some premium features.
- Installation complexity varies; larger or more advanced units might require professional setup to ensure optimal operation.
| gas furnace | Efficiency | BTU |
|---|---|---|
| Mr. Heater 50,000 BTU Forced-A | — | — |
| Goodman 80,000 BTU 80% Efficie | 80% | — |
| Goodman 120,000 BTU 96% Effici | 96% | 120,000 |
| Goodman 96% AFUE Two-Stage Upf | 96% AFUE | — |
| Goodman 92% AFUE Single Stage | — | 80,000 |
| Gas Heating: Furnaces | — | — |
| ACiQ 40000 BTU 80% AFUE Gas Fu | 80% | 40000 |
| ACiQ 80K BTU 80% AFUE Gas Furn | 80% | 80,000 |
| Goodman 100,000 BTU 80% Effici | 80% | — |
| Goodman 96% AFUE Single Stage | 96% AFUE | 60,000 |
| ACiQ 60000 BTU 80% AFUE Gas Fu | — | 60000 |
| Goodman 80,000 BTU 80% Efficie | 80% | 80000 |
More Details on Our Top Picks
Mr. Heater 50,000 BTU Forced-Air Unit Heater (Propane or Natural Gas)
This ceiling-mounted forced-air heater stands out for its ability to heat large spaces like garages, barns, or workshops up to 1,667 square feet. Compared with traditional wall-mounted units, its high heat output of 50,000 BTUs ensures rapid, even warmth. Its compatibility with standard thermostats and Wi-Fi options adds convenience, but you must consider proper venting and sturdy mounting support due to its weight. While straightforward for experienced installers, the unit’s limited color options and heavy weight might pose challenges for DIY setups. It’s ideal for commercial or large residential spaces where quick, zone-specific heating is needed.
Pros:- Effective heating for large spaces up to 1,667 sq ft
- Easy ceiling mounting with included brackets
- Compatible with standard thermostats and Wi-Fi enabled options
- Includes safety shut-off features
Cons:- Requires proper venting and professional installation
- Heavy weight may require sturdy mounting support
- Limited color options
Best for: Property owners needing quick and effective heating in large, uninsulated spaces like garages or barns.
Not ideal for: Small homes or apartments — the unit’s size and installation complexity are overkill for limited spaces.
- Form Factor:Ceiling
- Usage:Indoor
- Room Type:Garage, Workshop, Barn
- Heating Coverage:1667 sq ft
- Heat Output:50000 BTU
- Fuel Type:Natural Gas
- Max Temperature:120°F
- Item Dimensions:24″D x 25.5″W x 13″H
- Item Weight:60.3 pounds
Our verdict“This heater makes the most sense for users needing robust zone heating in large, open areas where installation complexity is manageable.”
Goodman 80,000 BTU 80% Efficiency Multi-Speed Single-Stage Upflow/Horizontal Furnace Model GR9S800804BN
Compared with the 120,000 BTU Goodman furnace, this 80,000 BTU model offers a solid balance of efficiency and capacity for typical home heating. Its 80% AFUE rating helps reduce energy bills, and the multi-speed ECM motor ensures quieter, more consistent airflow. However, installation is limited to upflow and horizontal configurations, meaning it might not fit all homes—especially those requiring downflow setups. Accessories such as linesets and thermostats are sold separately, which can add to the overall cost. This model suits homeowners looking for reliable, efficient heating without the extra capacity or complexity of larger units.
Pros:- High efficiency with 80% AFUE
- Multi-speed ECM motor for quieter operation
- Includes a 10-year parts limited warranty
- Suitable for upflow/horizontal installation
Cons:- Installation limited to specific configurations
- Accessories sold separately
- Heavy weight may require professional assistance
Best for: Homeowners needing a dependable, efficient furnace compatible with existing upflow or horizontal duct systems.
Not ideal for: Homes requiring downflow installation or with very limited space for larger units, as installation options are constrained.
- Model:GR9S800804BN
- Capacity:80,000 BTU
- Efficiency:80%
- Installation Type:Upflow/Horizontal
- Fuel Type:Natural Gas
- Motor:Multi-Speed ECM
- Warranty:10-year parts limited
- Width:17.5 inches
- Depth:28 inches
Our verdict“Ideal for homeowners seeking a reliable, efficient furnace that fits in standard upflow or horizontal ducts, with some installation limitations.”
Goodman 120,000 BTU 96% Efficiency Multi-Speed Two-Stage Upflow/Horizontal Furnace Model: GR9T961205DN
This furnace offers a substantial 120,000 BTU capacity, making it well-suited for larger or multi-zone homes. Its 96% AFUE efficiency significantly cuts energy costs compared with lower-rated models like the 80% units. The multi-speed ECM motor delivers better airflow control and quieter operation, similar to the 80,000 BTU model but with added power. Its installation is limited to upflow/horizontal configurations, which might exclude some homes. While this model provides robust performance, it’s heavier and may require professional installation—an important consideration for those with limited DIY skills.
Pros:- High efficiency with 96% AFUE
- Multi-speed ECM motor for better airflow and noise reduction
- Ideal for larger or multi-zone homes
- Suitable for upflow/horizontal installation
Cons:- Heavy unit requiring professional setup
- Limited to specific installation configurations
- Higher upfront cost due to capacity and features
Best for: Large homes or multi-zone residences needing high-capacity, energy-efficient heating with quiet operation.
Not ideal for: Smaller homes or those with space constraints that can’t accommodate the 154-pound weight or specific installation requirements.
- Model Number:GR9T961205DN
- BTU:120,000
- Efficiency:96%
- Type:Multi-speed, two-stage
- Installation:Upflow/horizontal
- Air Flow Capacity:2000 cfm
- Weight:154 pounds
Our verdict“Best suited for homeowners prioritizing high capacity and efficiency in larger or multi-zone systems, with installation considerations in mind.”
Goodman 96% AFUE Two-Stage Upflow/Horizontal Multi-Speed 60k BTU Natural Gas Furnace
Compared with the larger 120,000 BTU model, this 60,000 BTU furnace offers a more modest capacity suitable for average-sized homes. Its 96% AFUE rating ensures minimized energy waste, and the two-stage operation provides improved comfort by adjusting heat output to match demand. The multi-speed ECM blower enhances airflow and reduces operational noise, making it a solid choice for balanced performance. Weighing just over 110 pounds, it’s more manageable for installation, though still requiring professional setup for warranty validity. This unit fits homes that prioritize efficiency and precise temperature control without the higher capacity of larger models.
Pros:- High efficiency with 96% AFUE
- Two-stage operation for comfort and efficiency
- Multi-speed ECM blower for smoother airflow
- Relatively easier to install due to weight
Cons:- Limited capacity for larger homes
- Requires professional installation for warranty
- No cooling option included
Best for: Homeowners with moderate-sized residences seeking energy-efficient, two-stage heating with quiet operation.
Not ideal for: Very large homes or those needing rapid, high-capacity heating, as the 60,000 BTU might be insufficient.
- Model Number:GR9T960603BN
- Heating Capacity:60,000 BTU
- Efficiency:96% AFUE
- Operation:Two-stage
- Flow Capacity:1200 CFM
- Weight:110.9 pounds
Our verdict“This furnace is well-suited for moderate homes where efficiency and comfort are priorities without excessive capacity.”
Goodman 92% AFUE Single Stage Upflow/Horizontal Multi-Speed 80k BTU Natural Gas Furnace (GR9S920803BN)
Compared to the two-stage models, this single-stage 80,000 BTU furnace offers straightforward operation with a solid 92% AFUE rating. It’s designed to deliver consistent heat in typical residential settings, with a multi-speed ECM motor for better airflow and reduced noise. Its upflow/horizontal installation options make it versatile for many homes, though it may not be suitable where multi-stage control is desired. Lacking the complexity of two-stage units, it’s a reliable choice for homeowners seeking simplicity and efficiency, but it offers less nuanced temperature control and slightly higher noise levels.
Pros:- High efficiency with 92% AFUE
- Multi-speed ECM motor for quiet, consistent airflow
- Versatile for upflow or horizontal installation
- Suitable for whole-house heating
Cons:- Limited to single-stage operation
- Less precise temperature control than two-stage models
- Potential noise at higher fan speeds
Best for: Homeowners wanting reliable, high-efficiency whole-house heating with simple operation and installation flexibility.
Not ideal for: Large or multi-zone homes needing variable heating stages or customized comfort control.
- AFUE:92%
- BTU:80,000
- Type:Single-stage
- Operation:Single-stage
- Motor:Multi-Speed ECM
- Installation:Upflow/Horizontal
- Wattage:23,440 watts
- Noise Level:51 db
Our verdict“This furnace fits homes seeking dependable, efficient heating with straightforward operation and flexible installation options.”
Gas Heating: Furnaces, Boilers, Controls, Components
This book stands out for its comprehensive coverage of gas heating systems, making it a valuable resource for both professionals and homeowners eager to understand system fundamentals and maintenance. Unlike product-specific guides, it provides foundational knowledge, but it does lack recent technological updates, which might leave some readers wanting more current insights. It’s ideal for those interested in troubleshooting or gaining a deeper understanding of gas heating technology, rather than immediate installation or performance specifics.
Pros:- Extensive coverage of gas heating systems and controls
- Useful for both DIY homeowners and professionals
- Includes maintenance and troubleshooting guidance
Cons:- Lacks specific product features and specifications
- Does not cover recent technological advancements comprehensively
Best for: Homeowners and HVAC professionals seeking a detailed technical overview and troubleshooting tips
Not ideal for: People looking for specific product recommendations or the latest gas furnace innovations
Our verdict“This book is best for those needing a technical reference rather than a direct purchase guide.”
ACiQ 40000 BTU 80% AFUE Gas Furnace – Upflow/Horizontal 1200 CFM
Compared with larger models like the ACiQ 80K BTU furnace, this 40,000 BTU unit offers solid efficiency at 80% AFUE, suitable for smaller spaces or moderate heating loads. Its flexible upflow or horizontal installation options make it adaptable for various layouts, but it doesn’t meet California and Colorado Low NOx standards, limiting use in those regions. While it provides good value, it’s best suited for homes that don’t require the highest efficiency or strict emissions compliance.
Pros:- Energy-efficient with 80% AFUE rating
- Flexible installation options (upflow or horizontal)
- Durable construction with a lifetime heat exchanger warranty
Cons:- Does not comply with California and Colorado Low NOx regulations
- Limited to natural or propane gas
- Requires proper registration to maintain warranty
Best for: Homeowners needing a reliable, budget-friendly furnace with installation flexibility
Not ideal for: Regions with strict Low NOx regulations or homes requiring high-capacity heating
- BTU:40000
- AFUE:80%
- CFM:1200
- Configuration:Upflow/Horizontal
- Efficiency:80%
Our verdict“A practical choice for budget-minded homes needing flexible installation, but not suitable where emissions standards are strict.”
ACiQ 80K BTU 80% AFUE Gas Furnace – 17.5″ Downflow/Horizontal 1600 CFM
Compared with the smaller ACiQ 40K model, this 80,000 BTU furnace delivers more heating capacity while maintaining 80% AFUE efficiency, with added features like a 9-speed blower that enhances comfort and quietness. Its downflow and horizontal options add installation versatility, but like its smaller sibling, it doesn’t meet California or Colorado Low NOx standards and requires professional setup to preserve warranty. Its high capacity makes it better suited for larger homes or spaces that need robust heating.
Pros:- High energy efficiency at 80% AFUE
- Flexible installation options (downflow/horizontal)
- Quiet operation with a 9-speed blower
Cons:- Does not meet California and Colorado Low NOx standards
- Requires professional installation and registration
- Limited noise level info available
Best for: Homeowners with larger or multi-zone houses seeking flexible installation and quiet operation
Not ideal for: Small homes or regions with strict emissions regulations that limit product options
- BTU:80,000
- Efficiency:80%
- Downflow/Horizontal:Yes
- CFM:1600
- Fuel Type:Natural Gas
- Max Temperature Setting:65 °F
Our verdict“Ideal for larger homes that prioritize quiet, flexible installation, but not for regions with strict emissions rules.”
Goodman 100,000 BTU 80% Efficiency Multi-Speed Single-Stage Upflow/Horizontal Furnace (Model: GR9S801005CN)
This furnace, at 100,000 BTU, offers significant capacity suitable for larger homes or multi-zone setups, especially with its multi-speed operation that helps improve airflow and comfort. It compares favorably to the ACiQ 80K model by providing a higher BTU output, but it cannot be installed as a downflow unit and excludes California, making it less versatile in certain regions. Its 10-year parts warranty and robust build make it a strong choice for those needing reliable, high-capacity heating.
Pros:- High capacity at 100,000 BTU
- Multi-speed operation for better comfort
- 10-year parts and lifetime compressor warranty
Cons:- Cannot be installed as a downflow unit
- Excludes installation in California
- Heavy (175 pounds), requiring professional handling
Best for: Larger households or multi-zone homes needing high capacity and multi-speed comfort controls
Not ideal for: Homes in California or small spaces where lower capacity is sufficient
- Capacity:8 tons
- Efficiency:80%
- Weight:175 pounds
- Dimensions:28 x 21 x 34 inches
- Warranty:10-year parts, lifetime compressor
- Installation Type:Split system
Our verdict“A strong option for large or multi-zone homes that demand high capacity and multi-speed airflow, but requires professional installation in suitable regions.”
Goodman 96% AFUE Single Stage Upflow/Horizontal Multi-Speed 60k BTU Low NOx Natural Gas Furnace
Compared with the 80% AFUE models, this furnace offers a remarkable 96% efficiency, drastically reducing energy bills for homes with the capacity of up to 2,000 sq ft. Its multi-speed blower provides better airflow control, and the durable heat exchanger adds longevity. However, at 60,000 BTU, it’s best suited for moderate-sized homes, and its weight of 175 pounds means professional installation is essential. It also excludes California, and some users report installation complexities that can impact the overall experience.
Pros:- High efficiency at 96% AFUE reduces energy costs
- Durable construction with lifetime heat exchanger warranty
- Multi-speed blower improves airflow and comfort
Cons:- Heavy at 175 pounds, requiring professional installation
- Limited to natural gas; conversion needed for LP
- Installation complexity can be a concern for some
Best for: Homeowners seeking a high-efficiency furnace with low emissions for moderate-sized spaces
Not ideal for: Large households requiring higher BTU output or regions with strict emissions standards in California
- Model Number:GMSS960603BN
- Efficiency:96% AFUE
- BTU:60,000
- Weight:175 pounds
- Dimensions:34.5 x 17.5 x 28.75 inches
- Warranty:10-year parts, lifetime heat exchanger
Our verdict“A superb choice for energy-conscious homeowners in regions without strict emissions standards, but heavy and potentially complex to install.”
ACiQ 60000 BTU 80% AFUE Gas Furnace – 14″ Upflow/Horizontal 1200 CFM
This ACiQ model stands out for its combination of energy efficiency, flexible installation options, and durable components. With an 80% AFUE rating, it offers reliable heating performance for spaces up to 2,500 square feet, making it ideal for homeowners seeking long-term savings. Compared to the Goodman 80,000 BTU model, this furnace’s lower capacity might limit its use in larger homes, but its comprehensive warranty and versatile placement options compensate for this. The 9-speed blower ensures smoother airflow and better temperature control, though the unit’s design is less suitable for those in low NOx regulation areas like California and Colorado. It requires professional installation, especially for optimal performance and compliance. If you prioritize energy efficiency and installation flexibility, this furnace makes a compelling choice.
Pros:- Energy-efficient with 80% AFUE rating
- Flexible installation options suitable for various spaces
- Solid construction with high-quality components
- Comprehensive lifetime heat exchanger warranty
Cons:- Does not meet California and Colorado Low NOx standards
- Limited to natural gas, not compatible with electric setups
- Requires professional installation for optimal performance
Best for: Homeowners needing a reliable, energy-efficient furnace with flexible installation options for medium-sized homes
Not ideal for: Large households or spaces exceeding 2,500 square feet that require higher BTU capacity or for buyers in strict NOx regulation zones
- BTU:60000
- AFUE:80%
- CFM:1200
- Form Factor:Boxy Horizontal
- Indoor/Outdoor Usage:Indoor
- Heat Output:50 °F
- Voltage:115 volts
- Warranty:Lifetime Heat Exchanger, 10-Year Parts
Our verdict“This furnace suits homeowners seeking adaptable, efficient heating with a focus on durability and long-term warranties.”
Goodman 80,000 BTU 80% Efficiency Multi-Speed Single-Stage Upflow/Horizontal Furnace (Model: GR9S800803BN)
This Goodman furnace offers a higher heating capacity of 80,000 BTU, making it better suited for larger homes or spaces that demand more warmth. The multi-speed ECM motor improves airflow, providing quieter operation and better temperature stability compared to single-speed models like the ACiQ 60000 BTU. Its 80% AFUE efficiency ensures decent energy savings, but it falls short of the higher efficiencies seen in newer two-stage or variable-speed units. Unlike the ACiQ, this model cannot be installed as a downflow, limiting placement flexibility, and accessories such as linesets and thermostats are sold separately. Its 17.5-inch cabinet width makes it a good fit for standard closets but might be too large for tighter spaces. This pick makes the most sense for buyers prioritizing capacity and quieter operation over installation versatility.
Pros:- High heating capacity of 80,000 BTU
- Multi-speed ECM motor for quiet, efficient airflow
- Efficient 80% AFUE rating
- Suitable for upflow or horizontal installation
Cons:- Cannot be installed as a downflow furnace
- Accessories like linesets and thermostats sold separately
- Limited to certain installation orientations
Best for: Homeowners needing higher heating capacity and quieter operation in medium to large homes
Not ideal for: Small spaces or those in areas with strict NOx emissions regulations, as it lacks low NOx compliance and is limited to specific orientations
- BTU:80000
- Efficiency:80%
- Installation:Upflow/Horizontal
- Cabinet Width:17.5 inches
- Fuel Type:Gas
- Heat Output:High capacity for larger spaces
Our verdict“This furnace is ideal for larger homes where capacity and quiet operation are priorities, with some installation limitations to consider.”
How We Picked
I evaluated these gas furnaces based on several key criteria: heating performance, energy efficiency, build quality, ease of installation, and overall value. Priority was given to models that balance cost with long-term savings, especially those with higher AFUE ratings and multi-stage operation. I also considered user reviews and industry reputation to ensure reliability. The ranking reflects which furnaces offer the best combination of features for different buyer needs, from budget-friendly options to premium, high-efficiency models.Factors to Consider When Choosing Gas Furnaces
Choosing the right gas furnace involves more than just comparing BTU ratings. It’s essential to consider efficiency, size, and features that match your home’s heating demands. A well-chosen furnace not only warms your space effectively but also keeps energy bills manageable over time. Understanding these factors helps avoid common pitfalls like under-sizing or over-investing in unnecessary features.Efficiency Ratings (AFUE)
Efficiency, measured by AFUE (Annual Fuel Utilization Efficiency), directly impacts your heating costs and environmental footprint. Higher AFUE ratings (above 90%) mean less fuel is wasted, leading to lower bills over time. However, these models tend to cost more upfront. Buyers should balance initial expense with expected savings, especially if they plan to keep the furnace for many years.
Heating Capacity and Size
An undersized furnace won’t adequately heat your home, while an oversized unit can cycle excessively, wasting energy and reducing lifespan. It’s critical to have a professional perform a load calculation to determine the right capacity. This ensures comfort and efficiency, avoiding common mistakes like buying a furnace based solely on home size estimates.
Single-Stage vs. Multi-Stage Operation
Single-stage furnaces operate at full capacity whenever on, which can lead to uneven temperatures and higher energy use. Multi-stage models adjust their output, providing more consistent heat and better efficiency. Although multi-stage units are typically more expensive initially, they can offer noticeable savings and comfort improvements over time.
Budget vs. Premium Features
Budget models focus on basic heating, often with lower AFUE ratings, making them suitable for smaller or less-used spaces. Premium options include features like variable-speed blowers, advanced controls, and enhanced durability, appealing to buyers seeking long-term reliability and comfort. Weigh these features against your budget and expectations for maintenance and longevity.
Installation and Maintenance
Proper installation is vital for performance and safety. Larger or more complex units might require professional setup, which adds to the initial cost but ensures efficiency and safety. Regular maintenance, like filter checks and system tune-ups, extends the lifespan and keeps your furnace running smoothly. Avoid choosing a furnace without considering the installation requirements and ongoing upkeep.
Frequently Asked Questions
How do I know what size furnace I need for my home?
Determining the right size furnace involves a professional load calculation that considers your home’s square footage, insulation quality, window efficiency, and climate. An undersized unit won’t adequately heat your space, leading to discomfort, while an oversized one can cycle excessively, wasting energy and increasing wear. Getting this calculation done ensures you select a furnace that meets your home’s specific needs, balancing efficiency and comfort.
Is a higher AFUE rating always better?
Generally, higher AFUE ratings indicate more efficient furnaces, which can save money over time through lower fuel bills. However, these models often come with a higher initial cost and may have more complex features that require professional installation and maintenance. It’s important to weigh long-term savings against upfront expenses and consider your climate, home size, and usage habits to choose the right efficiency level.
Should I opt for a single-stage or multi-stage furnace?
Multi-stage furnaces provide more consistent heating and operate more efficiently by adjusting their output based on demand. They tend to be quieter and offer better humidity control, making them ideal for larger or more variable climates. Single-stage models, while less expensive, may lead to temperature swings and higher energy bills. The choice depends on your budget, comfort preferences, and desire for energy savings.
What maintenance does a gas furnace require?
Regular maintenance includes changing or cleaning filters, inspecting the venting system, and scheduling annual professional tune-ups. These steps help prevent issues like carbon monoxide leaks, improve efficiency, and extend the furnace’s lifespan. Even the best units need routine upkeep, so factoring in maintenance costs and scheduling is essential for long-term reliability.
Can I install a gas furnace myself?
Gas furnace installation involves complex connections to gas lines, electrical systems, and venting, making it unsafe for DIY efforts. Professional installation not only ensures safety and code compliance but also guarantees optimal performance. Attempting to install a furnace without proper expertise risks leaks, safety hazards, and voiding warranties, so hiring certified technicians is strongly recommended.
Conclusion
For most homeowners seeking a reliable, efficient solution, the Goodman 120,000 BTU 96% AFUE Two-Stage Furnace offers a balance of performance and savings, making it the best overall pick. Budget-conscious buyers will find the ACiQ 80% AFUE Furnace provides solid value without sacrificing quality. Those prioritizing premium features and maximum efficiency should consider the Goodman 96% AFUE Two-Stage Furnace. Beginners or small homes might opt for simpler, entry-level models, while larger or more demanding homes benefit from multi-stage or high-capacity units. Tailor your choice based on your budget, home size, and long-term comfort goals to find the best fit.
