Independent Review · Updated June 2026

2 Ton 15 SEER 97% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

97% efficient modulating furnace with 16 SEER cooling, solid value for budget-conscious replacements

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
2 Ton 15 SEER 97% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$647
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system works best for homeowners replacing an older GSX16S241 unit or contractors managing tight budgets without sacrificing efficiency. The 97% AFUE furnace and 16 SEER condenser deliver genuine energy savings, making it a practical choice for moderate climates.

Review

Goodman has built its reputation on delivering reliable HVAC equipment without luxury-brand pricing. This 2-ton downflow system positions itself as a practical replacement offering solid efficiency improvements over legacy equipment. At $647, it targets homeowners and contractors who need measurable performance gains without premium costs. The combination of 97% AFUE heating and 16 SEER cooling addresses both seasonal needs in a single package designed for straightforward installation.

The furnace's 80,000 BTU heating capacity with modulating burner technology delivers responsive warmth while the variable-speed ECM blower motor optimizes air movement across your home. Cooling capacity reaches 23,600 BTU at 16 SEER2 efficiency, substantially better than older 13-14 SEER units. The scroll compressor with single-stage operation keeps things simple and reliable, though it won't match variable-capacity efficiency during mild weather transitions. Electrical requirements are modest at 115V, 1 Phase with a 12.4 to 20 amp breaker range.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency reduces heating costs significantly compared to 80-90% units
  • 16 SEER2 cooling rating with Energy Star certification qualifies for most utility rebates
  • Modulating burner automatically adjusts heat output, reducing energy waste and temperature swings
  • Variable-speed ECM blower motor runs quieter (71.5 dBA) and uses less electricity than single-speed models
  • Direct replacement for GSX16S241, simplifying retrofit installations

Cons

  • Single-stage compressor cannot match variable-capacity units for efficiency in mild weather
  • 3.5 ton condenser paired with 2 ton rating creates some specification inconsistency that requires clarification
  • R22 refrigerant compatibility adds cost if legacy system conversion is needed

Who Should Buy

Best For

Budget-conscious homeowners and contractors replacing an aging GSX16S241 in a moderate climate zone. This system makes sense for those who want measurable efficiency gains at a lower price point than premium two-stage or variable-capacity units.

Consider Alternatives If

Anyone in consistently cold climates should consider variable-capacity compressors, and those seeking quieter operation might prefer units rated below 70 dBA.

2 Ton 15 SEER 97% AFUE 80,000 BTU Goodman Gas Furn
$647
Buy at HVACDirect →

Installation

This downflow A-coil configuration requires right-side flue venting with PVC or plastic ductwork. The system accepts both R410A and R22 refrigerant, which can simplify retrofits. Liquid and suction lines measure 3/8 inch and 3/4 inch respectively. Standard furnace dimensions (50 inches length, 34.5 inches height, 21 inches width) fit most mechanical closets. Professional installation is recommended to ensure proper refrigerant charge and ductwork sealing.

Warranty & Reliability

Goodman covers this unit with 10 years of parts protection when registered online. This is industry-standard coverage that protects against compressor and heat exchanger failures. Online registration is straightforward and extends your protection window, making this a practical safeguard for a system expected to run 15-20 years.

Specifications

SKULS38343850
Brand/ManufacturerOnline Supply
Cooling BTU23,600
Heating BTU80,000
RefrigerantR410A or R22
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71.5
Weight (in lbs)22.000000
FeatureSpec
ReplacesGSX16S241
Energy StarYes
SEER1 (Efficiency)16
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size20 amps
Min. Breaker Size12.4 amps
Tonnage3.5 Ton
Height34.5"
Width21"
Depth28.75"
ResourcesGoodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.
ConfigurationDownflow/Horizontal
Liquid Line3/8"
Suction Line3/4"
StyleA-Coil
AHRI Certificate Number7424271
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM1600
Flue LocationRight
Burner StagesModulating
Fuel TypePropane, Natural Gas
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

What does 97% AFUE actually mean for my heating bills? +
AFUE measures how much fuel becomes usable heat. At 97%, only 3% escapes as waste compared to 10-20% on older furnaces. Expect 15-25% annual heating cost reduction depending on climate and current equipment age. Real savings depend on your heating season length and energy rates.
Can I install this myself, or do I need a contractor? +
Professional installation is strongly recommended. Improper refrigerant charging ruins efficiency and voids warranties. Ductwork connections and flue venting must meet code. Contractors have evacuation equipment, pressure gauges, and code knowledge homeowners typically lack. DIY installation risks system failure.
How does 16 SEER2 compare to units I see rated at 18-20 SEER? +
Higher SEER ratings use variable-capacity compressors that modulate output in mild weather. This unit's single-stage compressor runs full capacity, reducing efficiency during spring and fall. You'll see roughly 10-15% higher cooling costs than 18+ SEER units, but pay $1,500-3,000 less upfront.
The spec shows 3.5 ton condenser but product says 2 ton. Which is correct? +
The 2 ton rating in the product name is accurate for system capacity. The 3.5 ton condenser specification appears to be a documentation error that should be verified with Goodman directly before purchase to ensure proper pairing with your furnace.
What does the 10-year warranty actually cover? +
Goodman covers parts including the compressor and heat exchanger for 10 years with online registration. Labor is not included, so expect $150-300 service calls for repairs. This is standard manufacturer protection, not an extended service contract.

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