Goodman Ultra-Low Nox Furnace California | 60000 BTU 80% Efficient Gas Furnace Multi-Speed ECM | Upflow / Horizontal | R32 (GR9S800603AU)
Check current price on AC Direct →
Key features
- California Ultra-Low NOx certified, meeting 14 ng/J emissions limits required by most CA air districts
- 60,000 BTU heat output suited to smaller to mid-size California homes in mild-to-moderate climates
- 80% AFUE mid-efficiency rating, appropriate where extreme winter heating loads are uncommon
- Multi-speed ECM blower motor reduces operating electricity costs versus single-speed PSC designs
- Upflow and horizontal installation compatibility for closet, alcove, and attic mount scenarios
- Goodman's standard 10-year parts limited warranty when registered within 60 days of install
About this system
The Goodman GR9S800603AU is a 60,000 BTU, 80% AFUE gas furnace built specifically to meet California’s Ultra-Low NOx (ULN) emissions requirements, which cap nitrogen oxide output at 14 nanograms per joule or less. If you live in a California air quality management district that enforces ULN rules, this certification is not optional, and this furnace is purpose-built to comply. At 80% AFUE, roughly 80 cents of every dollar in gas becomes usable heat, making it a mid-efficiency choice that suits mild-to-moderate heating climates like much of coastal and Southern California where extreme cold is rare and the payback on a higher-efficiency condensing furnace can stretch to a decade or more.
The GR9S800603AU runs in an upflow or horizontal configuration, which covers the most common California install scenarios including closet upflow installs and attic horizontal mounts. The multi-speed ECM (electronically commutated motor) blower is a meaningful upgrade over single-speed PSC motors: it draws less electricity during steady-state operation, ramps airflow more gradually to reduce cold-blast starts, and pairs better with modern smart thermostats and zoning setups. The R-32 refrigerant designation on this model relates to system compatibility labeling rather than the furnace refrigerant circuit itself, since gas furnaces do not use refrigerant. Buyers pairing this unit with a new cooling system should confirm coil and line-set compatibility with their installer.
The GR9S800603AU is a straightforward, compliance-first furnace that does exactly what most California homeowners need: legal ULN operation, adequate efficiency for the climate, and a lower upfront cost than comparable Carrier, Trane, or Lennox units. The ECM blower adds genuine operating value, but buyers should budget for potential capacitor and component service costs after year seven and should prioritize installer quality above any other purchasing decision with this brand.
Overall score is the average of the five ratings above.
What we like
- California ULN certified, removing any permitting or air district compliance risk
- Multi-speed ECM motor lowers blower electricity draw compared to standard PSC motors
- Upflow and horizontal configurations cover the majority of California residential install scenarios
- Priced 15 to 25 percent below comparable Trane, Lennox, and Carrier models, freeing budget for quality installation
- 10-year registered parts warranty is competitive at this price point
Trade-offs
- 80% AFUE means roughly 20% of fuel is exhausted, so ongoing gas costs run higher than a 95% or 96% AFUE condensing alternative
- Goodman's ConsumerAffairs score sits around 2.5 out of 5, with repair cost complaints frequently appearing after year seven
- Brand-wide documented failure modes include dual-run capacitor failures and evaporator coil leaks that can add up over ownership
- Long-term reliability typically trails premium brands, with compressor and component lifespans running shorter on average
What homeowners and pros say about Goodman
Goodman earns consistent praise for one thing above most others: price. Across Google dealer reviews, where the brand averages around 3.8 out of 5 stars, affordability is the single most common theme, and many buyers specifically credit the savings on equipment cost for allowing them to hire a better installer or add better thermostatic controls. For a compliance-focused purchase like a California ULN furnace replacement, where the regulatory requirement drives the decision rather than a desire for premium performance, that value proposition resonates with a lot of homeowners.
The harder part of the Goodman picture comes from longer-term ownership data. On ConsumerAffairs, where the brand scores roughly 2.5 out of 5 on a channel that skews toward dissatisfied customers, the recurring story is repair costs that start climbing around year seven or eight. The documented failure modes line up with that pattern: dual-run capacitors are the most commonly reported issue and are typically a low-cost fix in the 300 to 600 dollar range, but evaporator coil leaks and compressor wear become more likely as systems age, and Goodman compressors tend to average 10 to 14 years versus 15 to 20 for premium brands. A small percentage of owners also report refrigerant-related issues in the first year, most of which trace to installation rather than the equipment itself, which underscores why installer selection matters more with this brand than almost any other factor.
Sources: ConsumerAffairs Goodman owner reviews, AHRI Directory of Certified Product Performance, U.S. DOE appliance and equipment efficiency standards, Goodman product specification sheets.
How it compares
| Brand | Comparable model | SEER2 | Stage | Price position |
|---|---|---|---|---|
| Goodman | GR9S800603AU | N/A (furnace only) | Multi-speed | Value pick |
| Carrier | Performance 80 (58TP0) | N/A (furnace only) | Single-stage | Moderately higher than Goodman |
| Trane | S8B1 80% AFUE | N/A (furnace only) | Single-stage | Moderately higher than Goodman |
| Lennox | Merit ML180 | N/A (furnace only) | Single-stage | Moderately to significantly higher than Goodman |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Does this furnace actually meet California's Ultra-Low NOx rules, and do I need to verify anything with my air district?
Yes, the GR9S800603AU carries a California Ultra-Low NOx certification for NOx emissions at or below 14 ng/J, which satisfies the requirements of the South Coast AQMD and most other California air quality districts that have adopted ULN rules. That said, some districts have local permit processes, so it is worth a quick confirmation with your specific air district or installer before purchase to ensure no additional paperwork is required.
Why is this furnace rated 80% AFUE instead of 95% or higher, and is that a problem in California?
80% AFUE furnaces do not require a condensate drain or a second PVC flue pipe because they do not condense exhaust gases, which simplifies installation in existing California homes with metal flue vents or limited drain access. In mild California climates where the furnace runs far fewer hours per year than in colder states, the efficiency gap between 80% and 95% translates to a modest annual gas cost difference, so the simpler install and lower upfront cost can make practical sense. Homes in colder California regions should run the math on higher-efficiency options.
What does the multi-speed ECM blower actually do differently than a standard blower motor?
An ECM motor adjusts its speed electronically to match the airflow demand at any given moment, rather than running at one fixed high speed. This means lower electricity consumption during most of the heating cycle, quieter startup, and more gradual temperature ramp-up that avoids the cold-air blast common with single-speed systems. It also tends to improve compatibility with variable-speed thermostats and zoning systems.
What are the most common repairs owners run into with Goodman furnaces, and roughly what do they cost?
Across owner reviews, the most frequently reported failure is the dual-run capacitor, which typically costs between 300 and 600 dollars to diagnose and replace and is generally a quick fix. Evaporator coil leaks appear in a meaningful share of longer-term reviews and can be more expensive to address. Goodman's documented repair pattern suggests costs tend to climb after roughly year seven, so factoring in a service budget beyond the warranty period is a reasonable planning step.
How important is the installer choice compared to the furnace brand itself?
With Goodman specifically, installer quality is the single most cited factor in how long the equipment lasts and how well it performs. Technicians and owner reviews consistently point to improper sizing, poor airflow setup, and loose electrical connections as root causes of early failures, many of which show up as brand complaints but trace back to installation. Spending on a licensed, experienced installer often matters more than trading up to a premium brand installed carelessly.
Specifications
| Furnace output | 60000 BTU |
| Configuration | Upflow |
| Refrigerant | R-32 |
| Model | GR9S800603AU |