The Goodman GMVC98 is Goodman's flagship modulating gas furnace — the highest-efficiency model in their lineup at 98% AFUE. It features a fully modulating gas valve, variable-speed ECM blower motor, and stainless steel secondary heat exchanger. For Minnesota homeowners looking at a top-tier furnace, it's worth a close look. But is it worth the premium over the more popular GMVC96 or GMSS96?
Goodman GMVC98 Specs
| Specification | Detail |
|---|---|
| AFUE | 98% |
| Gas Valve | Modulating (40%–100% capacity) |
| Blower Motor | Variable-Speed ECM |
| Heat Exchanger | Aluminized steel primary, stainless steel secondary |
| Warranty (registered) | Lifetime heat exchanger, 10-year parts |
| Venting | Direct-vent PVC (2-pipe) |
| Available BTU | 40k, 60k, 80k, 100k, 120k |
| Sound Level | Very quiet — variable speed ramps gradually |
| ENERGY STAR | Yes |
Modulating vs. Two-Stage: What's the Difference?
A modulating furnace like the GMVC98 can fire at any capacity between 40% and 100%, adjusting in small increments to match heating load precisely. A two-stage furnace (like the GMVC96) operates at two settings: 65% and 100%. A single-stage furnace is either fully on or off.
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The modulating furnace provides the most consistent indoor temperature — virtually no hot/cold swings, longer run times at lower capacity, better humidity control, and the quietest operation. It's the premium tier. See our full comparison: variable-speed furnace vs. two-stage — is the upgrade worth it?
Efficiency Payback: GMVC98 vs. GMVC96
The GMVC98 is 2% more efficient than the GMVC96. On a typical Minnesota home spending $1,100/year on gas heating:
| Scenario | Annual Heating Cost | Savings vs. 96% |
|---|---|---|
| 80% AFUE furnace | ~$1,320/year | Baseline |
| 96% AFUE (GMVC96) | ~$1,100/year | $220/year savings |
| 98% AFUE (GMVC98) | ~$1,077/year | $243/year savings (or ~$23/year vs. 96%) |
The efficiency difference between 96% and 98% AFUE saves roughly $20–30 per year on a typical Minnesota gas bill. The GMVC98 typically costs $200–$500 more than the GMVC96 at the equipment level — a payback of roughly 7–20 years on efficiency alone.
The Real Value: Comfort and Modulation
The efficiency difference between 96% and 98% is not the main reason to choose the GMVC98. The real value is in modulating operation: longer, quieter cycles that maintain a more consistent temperature, better humidity control in both winter and summer, and more even heat distribution throughout the home. For homeowners who prioritize comfort and quiet operation, the GMVC98 is worth the premium beyond the efficiency numbers alone.
Who Should Choose the GMVC98
- Homeowners who prioritize quiet operation and comfort consistency
- Homes with multiple zones or variable heating needs
- Homeowners pairing with a smart thermostat and want the most responsive system
- Anyone planning to stay in the home long-term (10+ years)
- Homes where the $200–$500 premium is modest relative to total project cost
Who Should Choose the GMVC96 Instead
- Budget-conscious buyers — the GMVC96 is excellent and nearly as efficient
- Shorter-term homeownership (under 7–10 years)
- Homes where comfort consistency is less critical (single-level, well-insulated)
See our full comparison: Goodman GMSS96 vs. GMVC96 in Minnesota.
Shop the GMVC98 at Furnace Direct
At Furnace Direct, we sell the Goodman GMVC98 factory-direct with same-day Minnesota delivery — no dealer markup. Browse our full Goodman furnace collection or contact us to compare models for your specific home. Every Goodman furnace includes a lifetime heat exchanger warranty when registered within 60 days.
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