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Furnaces

Goodman 96% 100K BTU Gas Furnace 9-Speed 21"W Two Stage Upflow/Horizontal

SKU: GR9T961004CN
Product ID: 100928
Original price $0.00 - Original price $0.00
Original price $0.00
$2,492.00
$2,492.00 - $2,492.00
Current price $2,492.00

Product Details Goodman 96% AFUE 100K BTU Gas Furnace Two Stage 21"W Upflow/Horizontal GR9T961004CN The Goodman GR9T961004CN Gas Furnace is design...

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Goodman 96% 100K BTU Gas Furnace 9-Speed 21"W Two Stage Upflow/Horizontal

SKU: GR9T961005CN
Product ID: 100929
Original price $0.00 - Original price $0.00
Original price $0.00
$2,576.00
$2,576.00 - $2,576.00
Current price $2,576.00

Product Details Goodman 96% 100K BTU Gas Furnace Two Stage 21" Width Upflow/Horizontal GR9T961005CN The Goodman GR9T961005CN Gas Furnace delivers ...

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Goodman 92% AFUE 100,000 BTU Gas Furnace 21" Single Stage Upflow/Horizontal

SKU: GR9S921005CN
Product ID: 100904
Original price $0.00 - Original price $0.00
Original price $0.00
$2,188.00
$2,188.00 - $2,188.00
Current price $2,188.00

Product Details Goodman 92% AFUE 100,000 BTU Gas Furnace Single Stage Upflow/Horizontal GR9S921005CN The Goodman GR9S921005CN delivers reliable pe...

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Goodman 96% 100K BTU Furnace Nine-Speed 21"W Single Stage Upflow/Horizontal

SKU: GR9S961005CN
Product ID: 100911
Original price $0.00 - Original price $0.00
Original price $0.00
$2,382.00
$2,382.00 - $2,382.00
Current price $2,382.00

Product Details Goodman R32 96% AFUE Gas Furnace 100K BTU Nine-Speed Upflow/Horizontal GR9S961005CN The Goodman GR9S961005CN delivers powerful hea...

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Goodman 92% AFUE 100,000 BTU Gas Furnace 21"W Nine-Speed Upflow/Horizontal

SKU: GR9S921004CN
Product ID: 100903
Original price $0.00 - Original price $0.00
Original price $0.00
$2,133.00
$2,133.00 - $2,133.00
Current price $2,133.00

Product Details Goodman 92% AFUE 100000 BTU Gas Furnace R32 Nine-Speed Upflow/Horizontal GR9S921004CN The Goodman GR9S921004CN is a powerful, ener...

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Goodman 96% AFUE 100K BTU Furnace Variable Speed 24.5"W Upflow/Horizontal

SKU: GRVT961005DN
Product ID: 101419
Original price $0.00 - Original price $0.00
Original price $0.00
$3,318.00
$3,318.00 - $3,318.00
Current price $3,318.00

Product Details Goodman 96% 100K BTU Gas Furnace Variable Speed Upflow/Horizontal 24.5"W GRVT961005DN The Goodman GRVT961005DN gas furnace combin...

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ACiQ 100,000 BTU 96% Gas Furnace 9-Speed Two Stage 1600 CFM 21" Upflow R32

SKU: AQ-GR9T961004CN
Product ID: 089523
Original price $0.00 - Original price $0.00
Original price $0.00
$3,090.00
$3,090.00 - $3,090.00
Current price $3,090.00

Product Details ACiQ 100,000 BTU 96% Gas Furnace 9-Speed Two Stage 21" Upflow/Horizontal R32 AQ-GR9T961004CN The ACiQ AQ-GR9T961004CN high-efficie...

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ACiQ 100K BTU 92% Gas Furnace 9-Speed 21"W 1600 CFM Upflow/Horizontal R32

SKU: AQ-GR9S921004CN
Product ID: 089548
Original price $0.00 - Original price $0.00
Original price $0.00
$1,933.00
$1,933.00 - $1,933.00
Current price $1,933.00

Product Details ACiQ 100K BTU 92% Gas Furnace 9-Speed 21"W 1600 CFM Upflow/Horizontal R32 AQ-GR9S921004CN The ACiQ AQ-GR9S921004CN gas furnace of...

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ACiQ 96% AFUE 100,000 BTU Gas Furnace Two Stage Multi-Positional 21" Width

SKU: G96VTN1002120A
Product ID: 089742
Original price $0.00 - Original price $0.00
Original price $0.00
$2,477.00
$2,477.00 - $2,477.00
Current price $2,477.00

Product Details ACiQ 96% AFUE 100,000 BTU Gas Furnace Two Stage Multi-Positional 21" Width G96VTN1002120A The ACiQ G96VTN1002120A delivers powerfu...

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ACiQ 96% AFUE 100,000 BTU Gas Furnace Single Stage 21" Width Multi-Position

SKU: N96MSN1002120A
Product ID: 089751
Original price $0.00 - Original price $0.00
Original price $0.00
$2,265.00
$2,265.00 - $2,265.00
Current price $2,265.00

Product Details ACiQ 96% AFUE 100,000 BTU Gas Furnace Single Stage 21" Width Multi-Position N96MSN1002120A The ACiQ N96MSN1002120A is a high-effic...

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Goodman 80% 100K BTU Furnace 9-Speed 21"W Single Stage Upflow/Horizontal

SKU: GR9S801005CN
Product ID: 100947
Original price $0.00 - Original price $0.00
Original price $0.00
$1,507.00
$1,507.00 - $1,507.00
Current price $1,507.00

Product Details Goodman 80% 100,000 BTU Gas Furnace 9 Speed 21" Width Upflow/Horizontal R32 GR9S801005CN The Goodman GR9S801005CN gas furnace is a...

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Goodman 97% AFUE 100K BTU Furnace Variable Speed 21"W Downflow/Horizontal

SKU: GDVM971005CN
Product ID: 101410
Original price $0.00 - Original price $0.00
Original price $0.00
$3,663.00
$3,663.00 - $3,663.00
Current price $3,663.00

Product Details Goodman 97% 100K BTU Gas Furnace Variable Speed Low NOx Downflow/Horizontal GDVM971005CN Upgrade your home comfort system with thi...

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Goodman 80% AFUE 100K BTU Furnace Variable Speed Low NOx 21"W Upflow/Horizontal

SKU: GRVT801005CX
Product ID: 101434
Original price $0.00 - Original price $0.00
Original price $0.00
$2,452.00
$2,452.00 - $2,452.00
Current price $2,452.00

Product Details Goodman 100K BTU 80% AFUE Two Stage Low NOx Gas Furnace Upflow/Horizontal GRVT801005CX The Goodman GRVT801005CX Gas Furnace is pa...

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Goodman 80% AFUE 100K BTU Gas Furnace Low NOx 21"W Two Stage Downflow/Horizontal

SKU: GDVT801005CX
Product ID: 101426
Original price $0.00 - Original price $0.00
Original price $0.00
$2,522.00
$2,522.00 - $2,522.00
Current price $2,522.00

Product Details Goodman 80% AFUE 100,000 BTU Two Stage Gas Furnace 21" Downflow/Horizontal GDVT801005CX Overview The Goodman GDVT801005CX Gas Fur...

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Goodman 96% AFUE 100K BTU Furnace Variable Speed 21"W Downflow/Horizontal

SKU: GDVT961005CN
Product ID: 101416
Original price $0.00 - Original price $0.00
Original price $0.00
$3,296.00
$3,296.00 - $3,296.00
Current price $3,296.00

Product Details Goodman 96% 100K BTU Gas Furnace Variable Speed Downflow/Horizontal 21"W GDVT961005CN The Goodman GDVT961005CN Gas Furnace is engi...

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ACiQ 100,000 BTU 96% AFUE Gas Furnace Variable Two Stage 24.5" Upflow R32

SKU: AQ-GRVT961005DN
Product ID: 089510
Original price $0.00 - Original price $0.00
Original price $0.00
$3,242.00
$3,242.00 - $3,242.00
Current price $3,242.00

Product Details ACiQ 100,000 BTU 96% AFUE Gas Furnace Variable Two Stage 24.5" Upflow R32 AQ-GRVT961005DN The ACiQ AQ-GRVT961005DN is part of ACiQ...

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ACiQ 100K BTU 96% AFUE Gas Furnace Variable Speed Two Stage 21" Upflow R32

SKU: AQ-GRVT961005CN
Product ID: 089511
Original price $0.00 - Original price $0.00
Original price $0.00
$3,130.00
$3,130.00 - $3,130.00
Current price $3,130.00

Product Details ACiQ 100K BTU 96% AFUE Gas Furnace Variable Speed Two Stage 21" Upflow R32 AQ-GRVT961005CN The ACiQ AQ-GRVT961005CN is part of ACi...

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ACiQ 100,000 BTU 96% AFUE Gas Furnace Variable Speed Two Stage Downflow R32

SKU: AQ-GDVT961005CN
Product ID: 089517
Original price $0.00 - Original price $0.00
Original price $0.00
$3,220.00
$3,220.00 - $3,220.00
Current price $3,220.00

Product Details ACiQ 100,000 BTU 96% AFUE Gas Furnace Variable Speed Two Stage Downflow R32 AQ-GDVT961005CN The ACiQ AQ-GDVT961005CN gas furnace c...

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ACiQ 100,000 BTU 96% Gas Furnace 9-Speed Two Stage 2000 CFM 21" Upflow R32

SKU: AQ-GR9T961005CN
Product ID: 089522
Original price $0.00 - Original price $0.00
Original price $0.00
$3,250.00
$3,250.00 - $3,250.00
Current price $3,250.00

Product Details ACiQ 100,000 BTU 96% Gas Furnace 9-Speed Two Stage 2000 CFM 21" Upflow/Horizontal R32 AQ-GR9T961005CN The ACiQ AQ-GR9T961005CN hig...

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ACiQ 100,000 BTU 96% Gas Furnace 9-Speed Two Stage Downflow/Horizontal R32

SKU: AQ-GD9T961005CN
Product ID: 089530
Original price $0.00 - Original price $0.00
Original price $0.00
$2,582.00
$2,582.00 - $2,582.00
Current price $2,582.00

Product Details ACiQ 100,000 BTU 96% Gas Furnace 9-Speed Two Stage Downflow/Horizontal R32 AQ-GD9T961005CN The ACiQ AQ-GD9T961005CN is a powerful,...

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ACiQ 100000 BTU 92% Gas Furnace 9-Speed 21"W 2000 CFM Upflow/Horizontal R32

SKU: AQ-GR9S921005CN
Product ID: 089547
Original price $0.00 - Original price $0.00
Original price $0.00
$2,103.00
$2,103.00 - $2,103.00
Current price $2,103.00

Product Details ACiQ 100,000 BTU 92% Gas Furnace 9-Speed 21"W 2000 CFM Upflow/Horizontal R32 AQ-GR9S921005CN The ACiQ AQ-GR9S921005CN is a reliabl...

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ACiQ 100,000 BTU 80% Gas Furnace Variable Speed Two Stage Upflow/Horizontal

SKU: AQ-GRVT801005CN
Product ID: 089554
Original price $0.00 - Original price $0.00
Original price $0.00
$2,370.00
$2,370.00 - $2,370.00
Current price $2,370.00

Product Details ACiQ 100,000 BTU 80% Gas Furnace Variable Speed Two Stage Upflow/Horizontal AQ-GRVT801005CN The ACiQ AQ-GRVT801005CN is a top-tier...

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ACiQ 100K BTU 80% Gas Furnace Two-Stage 2000 CFM 21" Upflow/Horizontal R32

SKU: AQ-GR9T801005CN
Product ID: 089561
Original price $0.00 - Original price $0.00
Original price $0.00
$2,200.00
$2,200.00 - $2,200.00
Current price $2,200.00

Product Details ACiQ 100K BTU 80% Gas Furnace Two-Stage 2000 CFM 21" Upflow/Horizontal R32 AQ-GR9T801005CN Upgrade your home’s heating with the AC...

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ACiQ 100K BTU 80% Gas Furnace Two-Stage 1600 CFM 21" Upflow/Horizontal R32

SKU: AQ-GR9T801004CN
Product ID: 089562
Original price $0.00 - Original price $0.00
Original price $0.00
$2,090.00
$2,090.00 - $2,090.00
Current price $2,090.00

Product Details ACiQ 100K BTU 80% Gas Furnace Two-Stage 1600 CFM 21" Upflow/Horizontal R32 AQ-GR9T801004CN The ACiQ AQ-GR9T801004CN gas furnace is...

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HVAC Store provides superior furnace solutions engineered for dependable, real-world performance. Whether you are selecting a system for a new build or upgrading a long-serving unit, our collection allows you to compare premium upflow, downflow, and multi-positional models side-by-side. Every residential furnace in our lineup is backed by transparent efficiency data, exceptional build quality, and a team dedicated to helping you find the tailored solution for your specific heating needs.

High-Efficiency Heating: From Standard to Cutting-Edge Designs

Our furnace collection features innovative gas designs that maximize fuel conversion, with AFUE ratings reaching the mid-90s for significant long-term energy savings. Options range from reliable single-stage models to cutting-edge two-stage and variable-speed systems that fine-tune heat output for consistent comfort and reduced utility costs. For most residential applications, a natural gas furnace remains the leading choice, offering a service life of 15 to 20 years when supported by professional maintenance. In regions without natural gas infrastructure, our propane and electric alternatives provide robust heating for homes of any size.

We offer residential furnaces sized for everything from compact utility closets to expansive multi-story homes, with BTU capacities ranging from 30,000 to 140,000 BTUs . These top-notch units are listed with precise cabinet widths to ensure a seamless match with your existing ductwork. Selecting a high-AFUE model supports a more sustainable home environment, especially when integrated with a properly matched air conditioner or heat pump for year-round climate control.

Choosing the Right Furnace for Your Space

  • Match Capacity to Your Floor Plan: System sizing is critical; our range of 30,000 to 140,000 BTU units ensures you can select a furnace that maintains stable temperatures without inefficient short-cycling .

  • Compare AFUE Ratings: A furnace's AFUE (Annual Fuel Utilization Efficiency) directly impacts your monthly investment; choosing a high-efficiency model provides peace of mind through lower operating costs.

  • Verify Fuel Availability: Select between natural gas, propane, or electric configurations based on local utility availability and your existing mechanical setup.

  • Prioritize Comfort Technology: Two-stage and modulating furnaces with variable-speed blowers deliver quieter operation and more even heat distribution compared to standard single-stage units.

  • Factor in Installation Requirements: When investing in a new system, ensure you coordinate with a licensed professional to account for ductwork adjustments and flue requirements to maintain your comprehensive warranty coverage.

Related Collections for Complete Heating and Cooling

FAQ

What should I consider when purchasing a furnace online?

Focus on your fuel type, the required BTU capacity for your square footage, and the airflow configuration—such as upflow or downflow. Matching these technical specs to your existing ductwork ensures an efficient installation and exceptional long-term performance.

How does the AFUE rating impact my energy usage?

The AFUE rating measures how effectively a furnace converts fuel into usable heat; for example, a 96% AFUE rating means only 4% of the energy is lost through exhaust. Upgrading to a high-efficiency furnace is a sustainable choice that significantly reduces fuel waste and monthly utility bills.

Are gas furnaces the best choice for every region?

Natural gas is often the most cost-effective fuel source for primary heating. However, for homes without gas lines, our propane and electric furnaces offer reliable and premium heating performance for any application.

What is the expected lifespan of a residential furnace?

With regular professional maintenance, a quality furnace typically provides trusted performance for 15 to 20 years. Routine filter changes and annual inspections are essential to preserving the system’s efficiency and ensuring your comprehensive warranty coverage remains active.

What is the advantage of a variable-speed gas furnace?

While single-stage units run at 100% capacity whenever they are active, cutting-edge variable-speed systems adjust their output to meet the exact heating demand of the home. This results in quieter operation, superior humidity control, and the highest potential for energy savings