Independent Review · Updated June 2026

5 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

Solid 5-ton combo system: 13 SEER cooling, 80% AFUE heating, proven Goodman reliability.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This 5-ton Goodman system works best for contractors and homeowners replacing older units in moderate climates where 13 SEER and 80% AFUE meet budget and performance expectations. It's a dependable, straightforward installation that doesn't overpromise on efficiency but delivers consistent comfort.

Review

Goodman's 5-ton combination system represents the practical middle ground in residential HVAC. It pairs a 60,000 BTU air conditioner with a 100,000 BTU gas furnace in an upflow configuration, making it suitable for retrofit installations where space and standard ductwork exist. This unit directly replaces six legacy Goodman models, streamlining the path for contractors managing fleet upgrades. With 13 SEER cooling and 80% AFUE heating, it doesn't chase premium efficiency tiers but focuses on reliable operation and field serviceability.

Cooling performance delivers solid single-stage operation at 13 SEER, handling moderate heat loads without variable-capacity overhead. The heating side uses a two-stage burner design, reaching 80% AFUE with modulation that reduces energy waste during mild weather. A high-efficiency multi-speed blower achieves up to 2,000 CFM, ensuring proper airflow distribution. The reciprocating compressor uses R410A refrigerant and carries standard 3/8 inch and 7/8 inch line sizing. Electrical demands remain modest at 120V, 1 phase, with a 32.8 to 45 amp breaker requirement.

Pros & Cons

Pros

  • 13 SEER cooling efficiency handles 60,000 BTU capacity across 5 tons without premium pricing
  • Two-stage burner on heating side (100,000 BTU, 80% AFUE) reduces short-cycling and improves comfort
  • High-efficiency multi-speed blower reaches 2,000 CFM maximum, supporting proper airflow in most homes
  • Reciprocating compressor with R410A refrigerant is field-proven and widely supported by technicians
  • 10-year warranty with online registration provides solid coverage for residential applications

Cons

  • 80% AFUE is entry-level for gas furnaces; modern units hit 95%+ AFUE for better heating efficiency
  • Single-stage condenser cooling means less granular capacity modulation than variable-stage competitors
  • 77 dBA noise level is typical but noticeably louder than high-end quiet models (70 dBA or below)
  • Not Energy Star certified, signaling this unit targets cost-conscious buyers over eco-conscious ones

Who Should Buy

Best For

Contractors replacing GSX130603 through GSX130614 models and homeowners in mild to moderate climates who prioritize installation simplicity and upfront savings. Best for those who need 5-ton capacity and won't compromise on an 10-year registered warranty.

Consider Alternatives If

Homeowners in severe climates or those seeking top-tier efficiency should explore 95%+ AFUE furnaces and variable-capacity air conditioners instead.

5 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Fur
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Installation

Installation requires metal exhaust flue, standard sweat valve connections (3/8 inch), and 7/8 inch suction line with 3/8 inch insulation. The compact 30x21x21 inch footprint and 30-pound weight simplify positioning in utility closets or attics. Upflow and downflow configuration flexibility accommodates both horizontal and vertical mounting. Most contractors complete installation within standard timeframes; no specialized tools beyond typical HVAC equipment are needed.

Warranty & Reliability

A 10-year parts warranty activates upon online registration, providing solid protection for residential buyers. Coverage includes compressor and refrigerant circuit components typical of Goodman systems. Registration is straightforward and recommended immediately after installation to document purchase date and activate full term protection.

Specifications

SKULS38783830
Brand/ManufacturerOnline Supply
Cooling BTU60,000
Heating BTU100,000
RefrigerantR410A
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)77
Weight (in lbs)30.000000
FeatureSpec
ReplacesGSX130603, GSX130604, GSX130605, GSX130611, GSX130613, GSX130614
Energy StarNo
SEER1 (Efficiency)13
Condenser StagesSingle Stage
Compressor TypeReciprocating
Liquid Line3/8"
Suction Line7/8"
Liquid Valve Size3/8"
Max Breaker Size45 amps
Min. Breaker Size32.8 amps
Tonnage5 Ton
Valve TypeSweat
Height30"
Width21"
Depth21"
ResourcesCAPT Installation Manual CAPT Specifications Sheet Goodman Evaporator Coil 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.
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorHigh Efficiency Multi-Speed
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypeGas
StyleA-Coil
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

What does 13 SEER mean for my cooling costs? +
13 SEER indicates moderate efficiency, consuming roughly 15 to 20 percent more energy than 16 SEER models in identical conditions. For a typical 5-ton system running 1,000 hours annually, expect seasonal cooling energy costs $200 to $400 higher than premium units.
Can this system replace my old GSX130605 unit? +
Yes, this unit directly replaces GSX130603 through GSX130614 models. Verify your existing line set sizing matches the 3/8 inch and 7/8 inch specifications, and confirm your breaker capacity supports 32.8 to 45 amps before installation.
Is 80% AFUE heating efficient enough? +
80% AFUE is adequate for moderate climates but ranks at the legal minimum efficiency. Modern systems exceed 95% AFUE. If heating bills concern you, upgrading to a higher-efficiency furnace reduces fuel waste, though upfront cost increases significantly.
How does this compare to Lennox and Carrier 5-ton systems? +
This Goodman offers competitive value at entry pricing but trails premium brands in variable-capacity cooling and heating modulation. Lennox and Carrier equivalents provide quieter operation (70 dBA) and higher SEER ratings (14-16), justifying higher costs for efficiency-focused buyers.
What does the 10-year warranty actually cover? +
The warranty covers defects in materials and workmanship on compressors, refrigerant circuits, and coils. Registration is mandatory. It excludes wear items, labor, and damage from improper installation or maintenance neglect.

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