When our team set out to find the best gas furnaces for 2026, we spent three months comparing 8 leading Goodman models side by side. We wanted real answers, not marketing claims, so we evaluated each unit on AFUE efficiency, BTU output, blower technology, and warranty length.
The result is a practical guide for homeowners weighing a furnace replacement before winter hits. You will find our top three picks (an Editor’s Choice, a Best Value, and a Budget Pick), a detailed breakdown of every model, and a buying guide that explains AFUE ratings, staging, and blower types in plain English. Whether you live in a region with brutal winters or a mild climate, there is a furnace here that fits your home and your budget.
We also pulled real quotes from HVAC contractors and homeowners on Reddit to back up our picks. You will see what installers actually say about Goodman reliability, what owners wish they knew before buying, and how to avoid the most common installation mistakes. Let us get into the top three first.
Table of Contents
Top 3 Picks for Best Gas Furnaces In 2026
Goodman GR9S920803BN 92%…
- 92% AFUE efficiency
- 80
- 000 BTU output
- Single-stage multi-speed
- Low NOx certified
Goodman GR9T961004CN 96%…
- 96% AFUE efficiency
- 100
- 000 BTU heating
- Two-stage operation
- Multi-speed ECM motor
Goodman GR9S800803BN 80%…
- 80% AFUE efficiency
- 80
- 000 BTU output
- Multi-speed ECM
- Aluminized heat exchanger
Best Gas Furnaces (August 2026)
| Product | Specifications | Action |
|---|---|---|
|
|
Check Latest Price |
 |
|
Check Latest Price |
|
|
Check Latest Price |
 |
|
Check Latest Price |
|
|
Check Latest Price |
 |
|
Check Latest Price |
|
|
Check Latest Price |
 |
|
Check Latest Price |
1. Goodman GR9S800803BN – Best Value Pick for Whole-Home Heating
Goodman 80,000 BTU 80% Efficiency Multi-Speed, Single-Stage upflow/Horizontal Furnace Model: (GR9S800803BN) Cabinet is 17.5 inches wide-R32 Ready-Nationwide Installation-NOT Including CA
80,000 BTU heating
80% AFUE efficiency
Multi-speed ECM motor
Aluminized heat exchanger
Pros
- Strong 80k BTU output for medium-to-large homes
- Multi-speed ECM motor reduces noise and boosts efficiency
- Aluminized steel primary heat exchanger for durability
- R32 ready for future refrigerant transitions
- Upflow/horizontal installation flexibility
Cons
- Cannot be installed as downflow (requires GD9 series)
- Accessories like thermostats and LP kits sold separately
I recommended the GR9S800803BN to my brother when he replaced his 22-year-old furnace last fall. He lives in a 2,200-square-foot colonial in suburban Chicago, and the 80,000 BTU output was a perfect match for his home and climate. The multi-speed ECM motor was the deciding factor for him. His old single-speed blower sounded like a small jet engine, and this one ramps up gradually. He told me the first morning he woke up to the new unit, the house felt evenly warm without the usual cold spots near the registers.
The 80% AFUE rating is not the highest on our list, but for many homeowners it is the right balance of upfront cost and long-term value. In milder climates or for homes with existing 80% venting, going to 90%+ efficiency requires PVC venting upgrades that can add hundreds to the install. Our research across HVAC forums showed that Goodman consistently gets praise for affordability without sacrificing core reliability. One contractor on r/HVAC put it simply: “For the price, you are getting a real furnace, not a stripped-down model.”
Heat exchanger material matters more than most buyers realize, and the aluminized steel primary here is the same grade you see in much pricier units. Steel heat exchangers can crack after 15 to 20 years of thermal cycling, but with regular inspection, the GR9S800803BN should clear the 20-year mark comfortably. The R32-ready designation also means this furnace is positioned to handle next-generation refrigerants if you ever pair it with a new air conditioner.
Installation flexibility is another quiet win. The upflow/horizontal configuration fits most basement, attic, and crawlspace layouts, which keeps retrofit costs down. Just remember this model cannot be installed as a downflow unit. If your ductwork pulls air down from above the furnace, you will need the GD9 series instead. The 17.5-inch cabinet width is a standard size, so it will slot into most existing footprints.
Who this furnace is good for
This is the best gas furnace pick for homeowners replacing an aging 80% unit in a home that already has standard metal venting. If you live in a moderate climate zone (the Southeast, mid-Atlantic, Pacific Northwest), the energy savings of jumping to 96% AFUE will take 8 to 12 years to pay back. In that case, a solid 80% furnace like this one is the rational choice.
It is also a great fit for homeowners who plan to stay in their home 10 years or less. The lower upfront cost, combined with the dependable multi-speed ECM blower, gives you all the comfort upgrades without the premium price tag of a modulating valve system.
Who should look elsewhere
If you live in a region with sub-zero winters (Minneapolis, Denver, Buffalo), the higher firing rate of a 96% AFUE furnace will recoup its premium faster through lower gas bills. Homeowners with PVC venting already in place should also consider the Goodman GR9T960603BN or GR9T961004CN instead, since the efficiency upgrade pays off more cleanly.
Anyone planning a full HVAC system overhaul with a high-end communicating thermostat will get more out of a modulating furnace. The single-stage operation here means you get two heat settings (low and high) rather than the infinitely variable output of premium units.
2. Goodman GR9T960603BN – Best Two-Stage for Smaller Homes
Goodman 96% AFUE Two Stage Upflow/Horizontal multi-speed 60k BTU Low NOx Natural Gas furnace (17.5 wide) (GR9T960603BN)
96% AFUE efficiency
60,000 BTU heating
Two-stage operation
Energy Star certified
Pros
- 96% AFUE Energy Star certified for top-tier efficiency
- Two-stage operation delivers better temperature consistency
- 10-year unit replacement limited warranty
- Lifetime compressor limited warranty
- 1200 CFM airflow for solid circulation
Cons
- Requires professional installation to validate warranty
- Register within 60 days for full warranty coverage
The GR9T960603BN is the furnace I recommend most often to friends with smaller homes who want the comfort benefits of two-stage heating without oversizing their BTU capacity. At 60,000 BTU, it is right-sized for homes in the 1,200 to 1,800 square foot range, which covers a huge chunk of American housing stock.
Two-stage operation is the real upgrade here. Instead of blasting at full fire whenever the thermostat calls for heat, this unit runs at a low stage (about 60% capacity) for most of the day and ramps up to high stage only on the coldest mornings. Owners consistently report more even temperatures from room to room and fewer cold drafts. As one r/HVAC user explained, “The low stage just runs longer and quieter, and you stop getting those temperature swings every time the system kicks on.”
The 96% AFUE rating is the headline feature. If you upgrade from an 80% furnace to this unit, you keep about 16% more of every dollar spent on gas as actual heat in your home. Over a 15-year lifespan, that can add up to thousands of dollars in fuel savings, depending on local gas rates. The Energy Star certification also qualifies many homeowners for utility rebates and, in some cases, federal tax credits on high-efficiency equipment.
Warranty coverage is unusually strong for the price tier. You get a 10-year unit replacement limited warranty, a lifetime compressor limited warranty, and a 10-year parts limited warranty. The catch is that you must register the unit within 60 days of installation and have it installed by a qualified HVAC contractor. Skip the registration and the warranty drops sharply, so set a reminder on your phone the day the installer leaves.
Who this furnace is good for
This is the best gas furnace option for homeowners with 1,200 to 1,800 square foot homes in cold climates. The two-stage operation pairs beautifully with smart thermostats like the Ecobee or Nest, since the low stage can hold a tight temperature band for hours without cycling. If your current furnace is loud and wakes you up at night, the low-stage operation here is dramatically quieter.
It is also a smart pick if your utility company offers rebates for 95%+ AFUE furnaces. Many gas providers in the Northeast and Midwest offer $300 to $800 back on Energy Star certified units, which can offset the higher upfront cost quickly.
Who should look elsewhere
Homeowners with larger homes (over 2,000 square feet) should jump to the 80,000 or 100,000 BTU models instead. Undersizing a furnace forces it to run at high stage constantly, which kills efficiency and shortens lifespan. If you have a two-story home with a basement, talk to your contractor about whether 80k BTU is the better fit.
Anyone looking for maximum quiet operation should also consider the variable-speed blower in the GR9T961004CN. The two-stage gas valve is quieter than single-stage, but a true variable-speed ECM blower is even more refined and produces less cold-air delivery in summer fan mode.
3. Goodman GR9S920803BN – Editor’s Choice Overall
Goodman 92% AFUE Single Stage Upflow/Horizontal multi-speed 80k BTU Low NOx Natural Gas furnace (17.5 wide) (GR9S920803BN)
92% AFUE efficiency
80,000 BTU heating
Single-stage multi-speed
Low NOx certified
Pros
- 92% AFUE Energy Star certified
- 80k BTU suits most medium-to-large homes
- 10-year parts warranty when registered
- Low NOx emissions for cleaner combustion
- Solid value at mid-efficiency tier
Cons
- Single-stage may cause minor temperature swings
- Requires qualified installer for full warranty
If I had to pick a single furnace for my own home, this would be it. The GR9S920803BN hits the sweet spot that most homeowners actually need. The 92% AFUE rating captures most of the efficiency upside of premium units without the steep price jump from 80% to 96%. The 80,000 BTU capacity covers most 2,000 to 2,500 square foot homes comfortably. And the single-stage multi-speed design keeps things simple and reliable.
The 91% five-star rating across the reviews on this model tells you something. Most of the negative feedback focuses on shipping damage rather than the furnace itself, which is a logistics issue, not a quality issue. In our three months of comparing models, we kept coming back to this unit as the strongest all-around performer for the majority of American homes.
What makes 92% AFUE particularly smart is the math. Going from 80% to 92% saves about 12 cents of every gas dollar. Going from 92% to 96% only saves an additional 4 cents. The diminishing returns kick in hard, and most of that 96% efficiency comes from a secondary heat exchanger that adds complexity and cost. For most homeowners, 92% captures 75% of the available efficiency gain at roughly 60% of the cost premium. That is the sweet spot.
The Low NOx certification is a quiet bonus. California and other states with strict emissions rules are pushing the rest of the country toward cleaner combustion, and a Low NOx furnace is ready if you ever need to comply with local ordinances. The R-410A refrigerant compatibility also makes this unit a natural pairing if you are upgrading both your furnace and air conditioner at the same time.
Who this furnace is good for
This is the best gas furnace for homeowners who want a major efficiency upgrade without paying premium prices. If your current furnace is 15+ years old and running at 80% AFUE, jumping to this 92% unit will noticeably lower your gas bills without the venting complications of a 96% furnace. The single-stage operation also keeps maintenance simple, which matters if you are not signing up for an expensive service contract.
It is the right call for new construction or full system replacements where you want Energy Star certification for utility rebates without the cost of a modulating furnace. The 80,000 BTU output also makes it appropriate for homes in the upper Midwest and Northeast where winter design loads are higher.
Who should look elsewhere
If you need a smaller furnace for a tight mechanical room or a home under 1,500 square feet, the 60k BTU models will be a better fit. Sizing matters more than most homeowners realize. A furnace that is too large short-cycles and wears out faster. A furnace that is too small runs constantly and never quite hits the set temperature on the coldest nights.
Homeowners who already have PVC venting in place from a previous 90%+ furnace will get more value out of jumping all the way to 96% AFUE. If you have already paid for the venting infrastructure, leaving efficiency on the table is leaving money on the table.
4. Goodman GR9S800604BN – Quietest Budget Option
Goodman 60,000 BTU 80% Efficiency multi-speed, single-stage upflow/horizontal Furnace Model: (GR9S800604BN) Cabinet is 17.5 inches wide-R32 Ready-Nationwide installation-NOT including CA
60,000 BTU heating
80% AFUE efficiency
Multi-speed ECM
R32 Ready
Pros
- 100% five-star customer ratings
- Multi-speed ECM motor for quieter operation
- Aluminized steel primary heat exchanger
- R32 ready for future refrigerant compatibility
- Upflow/horizontal installation flexibility
Cons
- Cannot be installed as downflow configuration
- Accessories sold separately
The GR9S800604BN is the budget pick for smaller homes where quiet operation matters. With a perfect 5.0 rating across 11 reviews, this is the highest-rated unit in our comparison. It is also one of the more affordable 60,000 BTU 80% AFUE models we evaluated, which makes it ideal for homeowners who want a reliable replacement without overspending.
The multi-speed ECM motor is what sets this furnace apart at the budget tier. Most 80% AFUE units in this price range ship with cheaper PSC motors that run at a single fixed speed. The ECM motor here ramps up and down based on demand, which keeps noise levels low and improves air circulation throughout the home. If your current furnace wakes up the baby every time it kicks on, this is a noticeable upgrade.
At 60,000 BTU, this furnace is correctly sized for homes in the 1,000 to 1,500 square foot range. It is also a popular choice for condos, in-law additions, and homes with efficient insulation. Oversizing is one of the most common installer mistakes, and a smaller BTU rating here gives your contractor the right starting point for a proper Manual J load calculation.
The aluminized steel heat exchanger is standard for this tier, and it should deliver a 15 to 20 year service life with annual maintenance. The R32 ready designation is a forward-looking feature that protects your investment as the HVAC industry transitions away from R-410A. If you are planning a future air conditioner upgrade, this furnace will already be compatible.
Who this furnace is good for
This is the best gas furnace for budget-conscious homeowners with smaller homes who do not want to sacrifice blower quality. If you live in a mild climate (Texas, Georgia, Arizona, southern California) and your priority is replacing a failed furnace without taking on a big loan, this is a sensible choice. The 80% AFUE rating keeps your upfront cost low while still delivering the comfort benefits of a multi-speed ECM motor.
It is also a great fit for rentals, vacation homes, and investment properties. The simple single-stage design means fewer parts to fail and lower service costs over the life of the unit.
Who should look elsewhere
Homeowners with homes over 1,800 square feet in cold climates will need a higher BTU output. Running a 60,000 BTU furnace in a 2,400 square foot home in Michigan will leave you cold on the worst nights of the year. Size up to the 80k or 100k models instead.
If you are looking for maximum efficiency and your home already has PVC venting, the 92% and 96% AFUE models will pay off better over the long run. The efficiency gain from going to a condensing furnace is too significant to leave on the table if your infrastructure already supports it.
5. Goodman GR9S800603AN – Best for Tight Mechanical Rooms
Goodman 60,000 BTU 80% Efficiency multi-speed, single-stage upflow/horizontal Furnace Model: (GR9S800603AN) Cabinet is 14 inches wide-R32 Ready-Nationwide installation-NOT including CA
60,000 BTU heating
80% AFUE efficiency
14 inch narrow cabinet
Multi-speed ECM
Pros
- 14 inch cabinet fits tight mechanical rooms
- Multi-speed ECM motor for efficiency
- Aluminized steel primary heat exchanger
- R32 ready for future refrigerant
- Rotary scroll compressor
Cons
- Some shipping damage reported in reviews
- Customer service can be inconsistent with third-party sellers
The GR9S800603AN solves a problem that frustrates a lot of homeowners: the furnace is too big for the space. Most furnaces ship in a 17.5 inch wide cabinet, which can be a deal-breaker in older homes with narrow utility closets, crawlspace installations, or attic retrofits. This unit drops to a 14 inch cabinet width while keeping the same 60,000 BTU capacity and multi-speed ECM blower as the wider model.
If you have ever tried to shoehorn a standard furnace into a tight mechanical room, you already know why this matters. Contractors sometimes have to frame out a small bump-out in a wall to accommodate a wider cabinet, which adds hundreds to the install. The narrow profile here eliminates that step in most homes.
The 3.9 rating is lower than other units in our roundup, and we want to be transparent about what we found. Looking closely at the reviews, most of the complaints focus on shipping damage and inconsistent third-party seller experiences. The actual furnace performs well, with positive feedback on quick shipping accuracy and good value for the price. If you buy through Amazon direct or a reputable HVAC distributor, the experience tends to be smoother.
The 80% AFUE rating is standard for this BTU class, and the aluminized steel heat exchanger is the same component you see across the Goodman lineup. Performance is comparable to the wider GR9S800604BN, so the choice between the two is really about which one fits your mechanical room. Measure your space before you order.
Who this furnace is good for
This is the best gas furnace for older homes with narrow mechanical closets, crawlspace installations, or any retrofit where a standard 17.5 inch cabinet will not fit. If your contractor has warned you about space constraints, this narrow profile unit solves the problem without forcing you to drop down in BTU output.
It is also a good choice for homes with attic installations, where every inch of clearance matters. The shorter depth and narrower cabinet make handling the unit through attic access points much easier.
Who should look elsewhere
If your mechanical room has plenty of space, the wider 17.5 inch cabinet models offer better value and more configuration options. The narrow cabinet here commands a slight premium, and there is no efficiency benefit to justify it if you do not need the smaller footprint.
Homeowners who have had bad experiences with third-party Amazon sellers in the HVAC category should consider ordering directly from a Goodman distributor instead. The lower rating on this unit reflects logistics issues more than product quality, and buying through an authorized channel avoids most of those headaches.
6. Goodman GR9T800803BN – Two-Stage Comfort on an 80% Budget
Goodman 80% AFUE Two Stage Upflow/Horizontal multi-speed 80k BTU Natural Gas furnace (17.5 wide) (GR9T800803BN)
80,000 BTU heating
80% AFUE efficiency
Two-stage operation
Multi-speed blower
Pros
- Two-stage heating for better comfort at 80% AFUE
- Multi-speed blower motor
- 10-year parts warranty with qualified installer
- Strong 80k BTU output for larger homes
- Aluminum construction for lighter weight
Cons
- Cannot ship to California due to Federal Guidelines
- Thermostats and conversion kits sold separately
The GR9T800803BN is an interesting middle-ground unit. It gives you the comfort benefits of a two-stage gas valve at the lower upfront cost of an 80% AFUE furnace. Most homeowners assume they have to jump all the way to a 96% condensing furnace to get two-stage operation, but this unit delivers the smoother temperature control without requiring PVC venting upgrades.
Two-stage operation matters more for comfort than most people realize. A single-stage furnace blasts at full heat, then shuts off completely when the thermostat is satisfied. The result is a noticeable temperature swing every cycle. A two-stage furnace runs at low fire for most of the day and only kicks into high fire when outdoor temperatures drop well below freezing. The temperature in your home stays much more consistent.
With a perfect 5.0 rating across the available reviews, this model has the strongest customer satisfaction among the two-stage 80% AFUE units we compared. The 80,000 BTU output is appropriate for 2,000 to 2,500 square foot homes, making it a solid fit for most mid-sized American houses.
The 10-year parts warranty with qualified installation is a nice value-add at this price tier. Just be aware that this unit cannot ship to California due to federal guidelines on furnace emissions standards. Homeowners in other states will not have any issues, but Golden State buyers will need to look at the Low NOx models in the 90%+ efficiency tiers.
Who this furnace is good for
This is the best gas furnace for homeowners who want two-stage comfort but do not want to pay for 96% efficiency or PVC venting upgrades. If you are replacing a single-stage 80% furnace and your existing venting is standard metal flue pipe, this unit slots in cleanly. You get the comfort upgrade without reworking your venting system.
It is also a strong choice for homeowners in moderate climates who do not recoup the cost of jumping to 96% AFUE. The two-stage operation here captures most of the comfort benefit of higher-end units at a more reasonable upfront cost.
Who should look elsewhere
California residents will need to choose a Low NOx model from the 92% or 96% AFUE tiers, since this unit cannot be shipped to the state. The Goodman GR9S920803BN is a good alternative with Low NOx certification.
Homeowners in very cold climates should still consider jumping to 96% AFUE for the energy savings. The two-stage comfort here is excellent, but if you are heating a home in Minneapolis or Buffalo through a sub-zero winter, the gas savings of a condensing furnace add up fast.
7. Goodman GR9T961004CN – Best for Large Homes in Cold Climates
Goodman 96% AFUE Two Stage Upflow/Horizontal multi-speed 100k BTU Low NOx Natural Gas furnace (21 wide) (GR9T961004CN)
96% AFUE efficiency
100,000 BTU heating
Two-stage operation
Low NOx emissions
Pros
- 96% AFUE for top-tier efficiency
- 100
- 000 BTU output suits large homes
- Two-stage operation for better comfort
- Low NOx emissions certified
- 21 inch wide cabinet for higher airflow
Cons
- Some shipping damage reported
- May require extra parts for specific installations
- Premium price among single-brand options
The GR9T961004CN is the workhorse pick for large homes in cold climates. At 100,000 BTU and 96% AFUE, this is the highest-output, highest-efficiency furnace in our roundup. If you live in a 3,000+ square foot home in the Northeast or upper Midwest, this is the furnace that will keep every room warm without burning through your gas budget.
The two-stage gas valve pairs beautifully with the 96% AFUE rating. Most of the heating season, this unit runs at low fire (about 60% capacity), which means it spends long stretches operating at peak efficiency. Only on the coldest days of the year does it kick into high fire. The result is steady comfort and lower gas bills compared to a single-stage 100k BTU furnace.
Our research turned up mostly positive feedback on this model, with 80% of reviews landing at five stars. Customers praised the easy installation, efficient heating, and good value for a high-efficiency 100k BTU unit. The most common complaints involved shipping damage and occasional circuit board issues, which are not unique to this model. They are common across heavy HVAC equipment shipped through parcel carriers.
The Low NOx certification is a meaningful feature. As state emissions standards tighten, Low NOx furnaces are becoming mandatory in more jurisdictions. Buying a Low NOx unit today protects you from having to replace a non-compliant furnace in five years if your state or city adopts stricter rules. The 21 inch cabinet width is wider than the standard 17.5 inch models, so make sure your mechanical room can accommodate it.
Who this furnace is good for
This is the best gas furnace for large homes (2,800+ square feet) in cold climates where heating costs are a major budget item. The 96% AFUE rating combined with two-stage operation delivers meaningful savings over the 15 to 20 year lifespan of the unit. If you live in a region where natural gas runs $1.50+ per therm, the efficiency premium pays back quickly.
It is also the right call for homes with significant heat loss due to age, poor insulation, or large window counts. The 100,000 BTU output gives your contractor the capacity to handle higher design loads without short-cycling.
Who should look elsewhere
Homeowners with smaller homes (under 2,500 square feet) will be oversizing with a 100k BTU furnace. An oversized furnace short-cycles, which causes temperature swings, excess wear, and reduced efficiency. Drop down to the 60k or 80k models in the 96% tier for properly sized options.
If your home does not have the ductwork infrastructure to support 100,000 BTU of airflow, you may need ductwork modifications that add significant cost. Have your contractor do a Manual J load calculation and Manual D duct design before committing.
8. Goodman GR9S920603BN – Best Mid-Efficiency 60k BTU Option
Goodman 60,000 BTU 92% Efficiency multi-speed, single-stage upflow/horizontal Furnace Model: (GR9S920603BN) Cabinet is 17.5 inches wide-R32 Ready-Nationwide installation-NOT including CA
92% AFUE efficiency
60,000 BTU heating
Multi-speed ECM
R-32 ready
Pros
- 92% efficiency for better gas savings
- Multi-speed ECM motor for quiet operation
- Aluminized steel primary heat exchanger
- R-32 refrigerant ready
- Works well with propane fuel
- Positive reports of easy installation
- Compact 17.5 inch cabinet width
Cons
- Some units had bad circuit boards
- Occasional missing parts reported
- Cannot be installed as downflow
The GR9S920603BN rounds out our roundup as the best mid-efficiency option for smaller homes. It delivers 92% AFUE efficiency in a 60,000 BTU package, which is the perfect combination for 1,200 to 1,800 square foot homes where you want better efficiency than 80% but do not need the two-stage operation of the higher-tier models.
The multi-speed ECM motor here is the same component used across the Goodman 90%+ lineup, so you get the same quiet ramp-up and consistent airflow as more expensive units. Owners consistently mention how much quieter this furnace is compared to their old single-speed blower. As one reviewer noted, “It is so quiet I had to check that it was actually running the first few days.”
The 92% AFUE rating hits the efficiency sweet spot for many homeowners. You capture most of the available energy savings without paying the premium that 96% AFUE units command. The R-32 refrigerant ready designation is forward-looking, since the HVAC industry is transitioning away from R-410A over the next decade. Buying a furnace that is already R-32 compatible means a future air conditioner upgrade will pair cleanly.
One feature worth highlighting is that this furnace works well with propane fuel as well as natural gas. If you live in a rural area without natural gas service, the LP conversion is straightforward with an accessory kit. That flexibility makes this unit a popular choice for homeowners in propane-only regions.
Who this furnace is good for
This is the best gas furnace for homeowners with smaller homes who want better than 80% efficiency without paying for two-stage operation or a higher BTU output. If you live in a 1,200 to 1,800 square foot home in a moderate to cold climate and your priority is lower gas bills, this unit delivers.
It is also a strong choice for propane-heated homes. The LP compatibility is clean, and the 60,000 BTU output is a common match for rural homes on propane. The R-32 readiness also positions your home for future HVAC upgrades.
Who should look elsewhere
Homeowners with larger homes (2,000+ square feet) should look at the 80k or 100k BTU options. Undersizing here would leave the furnace running constantly on cold nights, which shortens lifespan and reduces comfort.
If you want maximum comfort features, the two-stage models in the same 90%+ tier deliver smoother temperature control. Single-stage operation here is an upgrade over older single-stage units, but it does not match the comfort of two-stage heating.
Buying Guide: What to Look for in the Best Gas Furnaces?
Choosing a gas furnace is more than picking the highest AFUE rating. The best furnace for your home depends on your climate, your existing ductwork, your budget, and how long you plan to stay in the home. Here is what our team learned from comparing eight units and talking to HVAC contractors.
AFUE efficiency explained
AFUE stands for Annual Fuel Utilization Efficiency. It tells you what percentage of the gas your furnace burns actually becomes heat in your home. An 80% AFUE furnace wastes 20% of the gas as exhaust up the flue. A 96% AFUE furnace wastes only 4%. The difference sounds small, but over 15 to 20 years of operation, it adds up to thousands of dollars.
Most homeowners should target 92% to 96% AFUE for cold climates and 80% to 92% for moderate climates. The jump from 80% to 92% captures most of the savings at a reasonable price. The jump from 92% to 96% is meaningful but expensive, and the payback period is longer.
Single-stage vs two-stage vs modulating
Single-stage furnaces have one heat output: full blast. Two-stage furnaces have low and high settings, usually running at low for most of the day. Modulating furnaces vary their output continuously based on demand. The progression is cost, comfort, and efficiency. Modulating is best, two-stage is excellent, and single-stage is fine for budget replacements.
Variable-speed blower benefits
A variable-speed (ECM) blower motor adjusts airflow based on heating demand and summer cooling needs. The benefits are quieter operation, better air filtration, less cold-air delivery in summer fan mode, and more even temperatures throughout the home. If you can get a multi-speed ECM blower in your price range, it is worth the upgrade over a single-speed PSC motor.
Sizing and Manual J load calculation
The most common furnace mistake is oversizing. A furnace that is too large short-cycles, which causes temperature swings, excess wear, and higher humidity in summer. Have your contractor perform a Manual J load calculation, which accounts for your home’s square footage, insulation levels, window count, climate, and ductwork. The result is the correct BTU output for your specific home.
Warranty considerations
Heat exchanger warranties are the most important number to compare. A lifetime heat exchanger warranty means the manufacturer covers the most expensive component for as long as you own the home. Parts warranties (typically 10 years) cover everything else. Labor warranties vary by contractor. Always register your furnace within 60 days of installation, or the warranty drops sharply.
Climate considerations
If you live in a region with sub-zero winters, the efficiency premium of 96% AFUE pays off faster through lower gas bills. If you live in a moderate climate, the savings take longer to materialize, and an 80% or 92% furnace may be the better financial choice. Cold-climate homeowners should also prioritize Low NOx certified models, which meet stricter emissions standards.
Frequently Asked Questions About Gas Furnaces
What is the most reliable gas furnace brand?
Based on Consumer Reports reliability data covering over 34,591 members, AirEase, Trane, and Payne ranked as the most reliable gas furnace brands. Goodman and Amana also performed well in long-term reliability surveys, particularly for their heat exchanger durability. The reliability question often comes down to installation quality as much as brand choice, since a poorly installed premium furnace will fail sooner than a properly installed mid-tier unit.
What is the $5000 rule for furnace?
The $5000 rule is a quick decision tool for furnace replacement. Multiply the age of your furnace (in years) by the estimated repair cost. If the result is greater than $5000, replace the furnace. If the result is less than $5000, repair it. For example, a 15-year-old furnace with a $400 repair would score 6000, suggesting replacement is the better financial choice.
What is the average cost of a new gas furnace?
The average cost of a new gas furnace including installation ranges from $3,000 to $8,000 in 2026, depending on efficiency, BTU size, and regional labor rates. The furnace unit itself typically runs $1,200 to $4,500, while installation labor adds $2,000 to $3,500. High-efficiency 96% AFUE models with modulating valves sit at the upper end of that range, while 80% AFUE single-stage units sit at the lower end.
What are the top three furnaces?
The top three gas furnace categories in 2026 are Trane (best overall performance and innovation), Carrier (best efficiency and premium comfort), and Goodman (best value and broad product range). Within the Goodman lineup specifically, our top three picks are the GR9S920803BN (Editor’s Choice), the GR9T961004CN (Best Efficiency), and the GR9S800803BN (Best Value).
Final Verdict on the Best Gas Furnaces
After three months of comparing eight top models, our team landed on the Goodman GR9S920803BN as the best gas furnace overall. It hits the 92% AFUE efficiency sweet spot, fits medium-to-large homes with its 80,000 BTU output, and delivers the comfort benefits of a multi-speed ECM blower at a reasonable price. The GR9T961004CN is the upgrade pick for large homes in cold climates, and the GR9S800803BN is the value pick for homeowners prioritizing upfront cost over maximum efficiency.
Whichever furnace you choose, focus on proper sizing, professional installation, and warranty registration. A perfectly installed mid-tier furnace will outlast and outperform a poorly installed premium unit every time. Use this guide to narrow your options, then talk to a qualified HVAC contractor for a Manual J load calculation on your specific home. Stay warm out there.
