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 workhorse with 80% efficiency and proven Goodman reliability

7.9
IndustrialRank Score
Efficiency
7.8
Reliability
8.2
Value
8.1
Installation
8.3
Warranty
7.9
5 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
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// Bottom Line
This 5-ton system makes sense for homeowners replacing older Goodman units or contractors stocking common tonnages for mid-size homes. The 80% AFUE and 13 SEER ratings are respectable but not cutting-edge, making it a practical choice for budget-conscious buyers who aren't chasing peak efficiency.

Review

The Goodman 5-ton gas furnace and air conditioner system occupies the practical middle ground in residential HVAC equipment. This upflow-configured unit combines 100,000 BTU heating capacity with 60,000 BTU cooling, designed for homes where mid-tier efficiency meets budget considerations. Its ability to replace six legacy Goodman models (GSX130603 through GSX130614) makes it attractive to contractors managing equipment transitions and homeowners seeking plug-and-play upgrades.

Performance specs reveal a competent but not exceptional system. The 80% AFUE furnace rating means roughly 80 cents of every heating dollar converts to usable warmth, with 20% lost through the flue. The 13 SEER cooling efficiency falls short of Energy Star thresholds but delivers predictable performance. Two-stage burner control and a variable-speed blower motor at 2000 CFM maximum show engineering restraint rather than aggressive innovation, prioritizing reliability over cutting-edge comfort features.

Pros & Cons

Pros

  • Variable-speed blower motor delivers 2000 CFM maximum, reducing runtime and improving comfort consistency
  • Two-stage burner handles heating efficiently across different outdoor temperatures, not just on-off operation
  • 5-ton capacity with 100,000 BTU heating and 60,000 BTU cooling fits typical mid-size residential homes
  • Replaces six existing model numbers, simplifying upgrades from older Goodman equipment
  • 10-year warranty with online registration provides solid coverage for parts and labor concerns

Cons

  • 80% AFUE is mid-range; modern high-efficiency furnaces reach 95% and save noticeably on heating bills
  • 13 SEER rating lacks Energy Star certification, meaning cooling efficiency lags current premium units at 16+ SEER
  • Single-stage compressor cycles on-off rather than modulating, using more energy during partial-load conditions
  • 77 dB noise level is audible indoors, louder than quieter premium models
  • No pricing listed on the specification sheet, raising transparency concerns

Who Should Buy

Best For

This system suits homeowners with mid-sized homes (1,500-2,500 sq ft) replacing aging Goodman units who prioritize compatibility and upfront savings over maximum efficiency gains. Contractors maintaining Goodman relationships or needing a reliable replacement in inventory will appreciate the straightforward specifications and broad model compatibility.

Consider Alternatives If

Buyers in high-cost energy markets or those planning 15+ year ownership should explore 95% AFUE furnaces and 16+ SEER air conditioners, which recover their premium through utility bill reductions despite higher initial investment.

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

Installation requires standard residential HVAC practices. The unit supports R410A or R22 refrigerant with 3/8-inch liquid lines and 7/8-inch suction lines using sweat valve connections. Electrical demand runs 32.8 to 45 amp breaker sizing at 120V single-phase 60Hz. Metal exhaust flue connection is mandatory. Dimensions of 30 inches height, width, and depth fit most utility closets or basement alcoves. Suction line insulation at 3/8-inch thickness is included with 30-foot lineset.

Warranty & Reliability

A 10-year warranty activates upon online registration, covering parts and manufacturing defects across the furnace and air conditioning components. This timeframe aligns with industry averages and provides meaningful protection for equipment failures. Registration is straightforward but necessary, so document your purchase details carefully to activate coverage.

Specifications

SKULS38783830
Brand/ManufacturerOnline Supply
Cooling BTU60,000
Heating BTU100,000
RefrigerantR410A or R22
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"
ResourcesCAPF Installation Manual CAPF 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 MotorVariable Speed
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypePropane, Natural Gas
StyleA-Coil
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

Can this system use either R410A or R22 refrigerant? +
Yes, it's rated for both. However, confirm which refrigerant your existing lines contain before the technician arrives. Mixing refrigerants damages compressors and voids warranty. R22 systems are aging out of production, so new installations typically use R410A exclusively.
What's the minimum ductwork size required? +
With a maximum CFM of 2000, calculate duct sizes using standard HVAC load calculations. A 2000 CFM system typically requires 14x10-inch main trunk or equivalent round ductwork. Undersized ducts create pressure drops, reducing efficiency and comfort. Your installer should provide a detailed duct sizing report.
How much will I save on heating costs compared to my current system? +
Upgrading from an older 70% AFUE furnace to this 80% unit saves roughly 12.5% on heating energy. Annual savings depend on local gas prices and climate. In cold regions paying $1.20 per therm, a typical home might see $150-300 annual savings, recovering upgrade costs in 8-12 years.
How does this 13 SEER system compare to newer models? +
Modern air conditioners hit 16-18 SEER ratings. This 13 SEER unit uses 18-28% more electricity for cooling. If electricity costs $0.14 per kWh, a household running AC 2000 hours yearly might spend $100-150 more than with a 16 SEER system, though upfront purchase price is typically lower.
What does the 10-year warranty actually cover? +
The warranty covers manufacturing defects in parts and labor. It does not cover maintenance, incorrect installation, refrigerant leaks from normal use, or damage from frozen coils or electrical surges. Proof of online registration is required for claims.

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