If you’re shopping for a gas furnace this fall, there’s a good chance Goodman is on your short list — and for good reason. Goodman has built its reputation on delivering dependable heating at a price that doesn’t require a second mortgage, and the current lineup spans everything from a straightforward 80% AFUE single-stage workhorse to a fully modulating 97% AFUE furnace with a communicating control system. The catch? Goodman’s model names look like alphabet soup (GM9S96? GRVM97?), and the differences between tiers aren’t obvious until you know what to look for.
This guide breaks down the entire Goodman gas furnace lineup for 2026: what the model names actually mean, how the efficiency tiers and staging options compare, which furnace fits which kind of home and climate, and what to know about Goodman’s warranty before you buy. Whether you’re a homeowner replacing a 20-year-old unit before the first cold snap or a contractor spec’ing equipment for the season, here’s everything you need to choose with confidence.
Table of Contents
- Why Goodman for a Gas Furnace?
- How to Decode Goodman Furnace Model Names
- The 80% AFUE Lineup: Budget-Friendly Basics
- The 92–96% AFUE Single-Stage Furnaces
- Two-Stage Comfort: The 96% AFUE Middle Tier
- The Top Tier: Modulating 97% AFUE with ComfortBridge
- Which AFUE and Staging Combination Is Right for Your Home?
- Sizing: Don’t Skip This Step
- The Goodman Furnace Warranty, Explained
- Pairing Your Furnace with Cooling (or a Heat Pump)
- Where to Buy — and Why Fall Is the Time
Why Goodman for a Gas Furnace?
Goodman is one of the largest residential HVAC manufacturers in North America, and since 2012 it has been part of Daikin, the world’s biggest HVAC company. That parentage matters: Goodman furnaces are built in the massive Daikin Texas Technology Park near Houston, and the brand benefits from Daikin’s engineering and component supply chain while staying positioned as the value line. (If you’re curious how the two brands compare head-to-head, we covered that in depth in our Goodman vs. Daikin guide.)
The practical takeaway for furnace shoppers: Goodman gives you name-brand engineering, wide parts availability, and one of the strongest registered warranties in the industry — typically at hundreds to thousands of dollars less installed than the premium brands. It’s the classic “smart money” pick, which is why so many contractors install Goodman in their own homes.
How to Decode Goodman Furnace Model Names
Goodman model numbers look cryptic, but they follow a pattern. Take GR9T96 as an example:
- G — Goodman brand.
- Second letter — airflow configuration. M models are built for upflow/horizontal installs, R models are multi-position, D and C models are for downflow/counterflow applications.
- Middle characters — burner staging and blower type. S means single-stage, T means two-stage, and M means modulating. A V in the model name signals a variable-speed ECM blower (as in GRVT96 or GDVM97).
- Final digits — the nominal AFUE rating: 80, 92, 96, or 97.
- -U suffix — an ultra-low-NOx version built to meet strict air-quality rules in parts of California and other regulated areas.
Once you can read the code, the whole lineup snaps into focus. Now let’s walk through it tier by tier.
The 80% AFUE Lineup: Budget-Friendly Basics
Goodman’s 80% AFUE furnaces — families like the GM9S80 (upflow/horizontal), GR9S80 (multi-position), and GC9S80 (downflow) — are the entry point. An 80% AFUE furnace converts 80 cents of every fuel dollar into heat, venting the rest up a conventional metal flue. These are single-stage furnaces with efficient multi-speed ECM blower motors, and they exist for a few specific situations:
- Mild climates where the furnace runs so few hours that the fuel savings from a condensing furnace may never pay back the upgrade cost.
- Replacement installs where venting is the constraint — an 80% furnace uses the existing metal flue, while a 90%+ condensing furnace needs new PVC intake/exhaust piping and a condensate drain.
- Garages, shops, and rental properties where upfront cost is the priority.
One important heads-up: the U.S. Department of Energy has finalized an efficiency standard that will require most new residential gas furnaces to reach roughly 95% AFUE starting in late 2028. Existing 80% units already installed aren’t affected, but the era of the 80% furnace is winding down. If your home is a natural fit for one, they remain available today — but it’s one more reason many buyers are stepping up to a condensing model now.
The 92–96% AFUE Single-Stage Furnaces
The heart of Goodman’s lineup is its condensing furnaces — models that capture extra heat from the exhaust with a secondary heat exchanger, pushing efficiency into the 90s. At this tier you’ll find:
- GR9S92 — a 92% AFUE single-stage, multi-position furnace. The lowest-cost way into condensing efficiency.
- GM9S96, GR9S96, and GD9S96 — 96% AFUE single-stage furnaces with multi-speed ECM blowers, in upflow/horizontal, multi-position, and downflow configurations respectively.
- GRVS96-U and CDVS96-U — ultra-low-NOx single-stage models that pair 96% AFUE with a variable-speed ECM blower.
A single-stage furnace has one output level: full blast. It fires, heats the house quickly, and shuts off. That’s perfectly fine for smaller homes, well-insulated homes, and budgets that prioritize efficiency over top-tier comfort refinement. Jumping from 80% to 96% AFUE cuts gas used for heating by roughly 17% for the same delivered heat, which in a cold climate adds up winter after winter.
Two-Stage Comfort: The 96% AFUE Middle Tier
Two-stage furnaces — the GR9T96 and GD9T96 (multi-speed ECM blowers), and the step-up GRVT96 and GDVT96 with variable-speed blowers and ComfortBridge communicating technology — add a low-fire setting, typically used for the majority of heating hours.
Why does that matter? A furnace sized for the coldest night of the year is oversized for the other 95% of the season. Running on low stage means longer, gentler cycles, which translates to:
- Steadier temperatures — fewer hot-cold swings between cycles.
- Quieter operation — low fire with a slower blower speed is dramatically quieter than full-blast starts.
- Better air mixing and filtration — longer run times move more air through your filter and even out hot and cold spots.
For most homeowners in a real heating climate, the two-stage 96% tier is the sweet spot of the Goodman lineup: a modest price step over single-stage for a noticeable everyday comfort upgrade. We dig deeper into the staging question in our guide to single-stage vs. two-stage vs. variable-speed systems.
The Top Tier: Modulating 97% AFUE with ComfortBridge
At the top of the range sit the GRVM97 and GDVM97 — modulating furnaces rated up to 97% AFUE, with fully variable-speed ECM blowers and Goodman’s ComfortBridge communicating technology. (The two-stage GRVT96 actually tests out even slightly higher on efficiency in some configurations, which shows how close the top tiers run.)
Instead of choosing between “low” and “high,” a modulating gas valve continuously fine-tunes its firing rate in small increments, matching heat output to what the house is losing in real time. The result is the closest a furnace gets to invisible: extremely long, low-intensity run cycles, supply air that feels warm rather than blasting, and indoor temperatures that barely move off the setpoint.
ComfortBridge moves the system intelligence into the furnace itself. The equipment continuously monitors performance and adjusts itself for efficiency, and it works with conventional thermostats rather than locking you into a proprietary control. For buyers who want maximum comfort, near-silent operation, and the best efficiency Goodman makes, this is the tier — just make sure your installer sets up the airflow and dip-switch configuration properly, because premium equipment only delivers premium results when it’s commissioned correctly.
Which AFUE and Staging Combination Is Right for Your Home?
Here’s the decision framework we walk customers through on the phone every day:
Mild-winter climates (Deep South, coastal areas)
Heating hours are low, so fuel savings from ultra-high efficiency are modest. A 92–96% single-stage furnace is usually the value play; an 80% unit can still make sense where venting logistics or budget demand it.
Moderate heating climates (Mid-Atlantic, Southern Midwest, inland Northwest)
The 96% two-stage tier (GR9T96 family) hits the sweet spot — meaningful fuel savings, better comfort, reasonable cost.
Cold climates (Upper Midwest, Northeast, Mountain states)
Efficiency compounds fast when the furnace runs six months a year. The 96% two-stage with variable-speed blower or the 97% modulating tier typically earns its premium in both fuel savings and comfort. This is also where AFUE differences show up most clearly on your gas bill — our efficiency ratings guide explains the math.
Regulated air districts
If you’re in an area with ultra-low-NOx requirements (much of Southern California, for example), look specifically at the -U models like the GR9S96-U or GRVS96-U, which are built to meet those emissions rules.
Sizing: Don’t Skip This Step
No furnace — not even the 97% modulating flagship — performs well if it’s the wrong size. Oversized furnaces short-cycle: they blast, overshoot, shut down, and repeat, which wears components, wastes fuel, and creates the exact temperature swings you paid to avoid. Undersized furnaces run nonstop and still lose ground on the coldest nights.
Furnace capacity is measured in BTU input (Goodman furnaces come in a range of sizes, generally from around 40,000 to 120,000 BTU/h), and the right number depends on your home’s square footage, insulation, air-tightness, windows, and climate — not just what was there before. A proper heat-load calculation is the gold standard. For a fast starting point, run your numbers through our free HVAC system sizing tool, and see our furnace sizing guide for the full Manual J explanation. When in doubt, call our team at (877) 843-4822 — we’ll help you confirm the size before you order.
The Goodman Furnace Warranty, Explained
Goodman’s warranty is one of its strongest selling points — but it hinges on one step people forget. Out of the box, Goodman gas furnaces carry a 5-year parts limited warranty. Register the unit within 60 days of installation and that coverage typically doubles to a 10-year parts limited warranty, plus a lifetime heat exchanger limited warranty for as long as you own your home on qualifying models. Select models also qualify for a unit replacement limited warranty, which will replace the entire furnace if the heat exchanger fails within the covered period.
A few fine-print notes worth knowing: warranty terms vary by specific model, so check the certificate for the unit you buy; a handful of states (California and Florida among them) grant the enhanced coverage without registration; and proper installation by a qualified professional is required to keep coverage intact. Set a reminder to register the day your furnace is installed — it’s ten minutes online for years of extra protection. For the broader picture of what HVAC warranties do and don’t cover, see our HVAC warranty guide.
Pairing Your Furnace with Cooling (or a Heat Pump)
A furnace replacement is the natural moment to think about the other half of your system. If your air conditioner is a similar age — and especially if it still runs R-410A refrigerant, which is now being phased down — replacing the air conditioner and coil at the same time usually saves money and headaches versus doing them separately a year or two apart.
There’s also a third path worth a look in 2026: dual fuel. Pair a Goodman furnace with a heat pump instead of a straight AC, and the system automatically heats with the cheaper energy source — the heat pump in mild weather, gas when temperatures drop. It’s one of the smartest configurations available for homes with real winters, and we broke down the economics in our complete dual-fuel guide.
Where to Buy — and Why Fall Is the Time
September and October are the shoulder season: installers’ schedules are open, and you’re ahead of the first-cold-snap rush when everyone whose furnace died is competing for the same crews. Replacing a struggling furnace on your schedule — rather than during an emergency in January — is the single easiest way to save money on the whole project.
Buy Comfort Direct carries the full Goodman furnace lineup — from 80% AFUE basics to the 97% modulating flagship — at direct-to-you pricing, backed by our price match guarantee. Browse the complete selection on our Goodman HVAC page, and don’t miss the open-box clearance section for deep discounts on ready-to-ship equipment. Orders over $99 ship free, and 0% APR financing is available through Affirm for qualified buyers.
Have questions about matching a furnace to your coil, your venting situation, or your climate? Call us at (877) 843-4822 or email Info@BuyComfortDirect.com — or reach out through our contact page. And once your new furnace is in, bookmark our guide to safely firing up your system for the first heat of the season. Winter’s coming — Goodman-equipped homes are ready for it.