Independent Review · Updated June 2026

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

Solid 80% AFUE furnace and 13 SEER AC combo for budget-conscious homeowners

7.5
IndustrialRank Score
Efficiency
7.2
Reliability
8.0
Value
8.2
Installation
8.5
Warranty
7.8
3 Ton 13 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This Goodman 3-ton system delivers dependable heating and cooling at an entry-level price point, making it ideal for homeowners replacing aging equipment who prioritize affordability over cutting-edge efficiency. It's a practical choice for moderate climates where 80% AFUE and 13 SEER ratings meet basic performance expectations without premium pricing.

Review

Goodman's 3-ton gas furnace and air conditioner system represents the entry point in modern residential HVAC, designed for homeowners prioritizing affordability over peak efficiency. This upflow unit combines an 80,000 BTU furnace with a 36,000 BTU air conditioner in a compact footprint measuring 26 inches tall, making it suitable for standard mechanical closets and basements. The system integrates proven reciprocating compressor technology with a two-stage gas burner, offering a middle ground between basic single-stage equipment and high-efficiency variable-capacity units.

Performance metrics are straightforward. The furnace delivers 80% AFUE, converting 80 cents of every utility dollar into usable heat while losing 20 cents up the vent stack. The air conditioner rates at 13 SEER, providing modest cooling efficiency compared to 16-18 SEER systems now common in contractor quotes. The two-stage burner and multi-speed blower motor allow some efficiency improvement during partial-load operation, while the 1,200 CFM maximum airflow capacity properly matches the 3-ton cooling rating. Reciprocating compressor construction prioritizes durability over variable-capacity modulation.

Pros & Cons

Pros

  • Two-stage burner with multi-speed blower provides better comfort control than single-stage alternatives
  • 1,200 CFM maximum airflow handles 3-ton capacity efficiently across typical residential ductwork
  • Flexible refrigerant compatibility supports both R410A and R22 depending on existing equipment
  • 10-year parts warranty with online registration offers solid coverage for mid-tier equipment
  • Upflow/downflow configuration works in standard furnace closets and basements with 26-inch height

Cons

  • 80% AFUE lags behind modern 95%+ systems, costing $150-200 annually in heating losses on typical usage
  • 13 SEER rating is below current market standard of 16+ SEER, limiting cooling efficiency and energy savings
  • Single-stage condenser means no modulation during partial-load cooling, reducing efficiency on mild days
  • 74 dB operating noise is audible in living spaces, especially when blower runs at maximum 1,200 CFM

Who Should Buy

Best For

Budget-conscious homeowners in moderate climates replacing 10-15 year old systems who can accept lower efficiency ratings in exchange for upfront savings. This system works well for secondary properties, rental units, or situations where payback period matters less than initial capital expense.

Consider Alternatives If

Homeowners in cold climates seeking ENERGY STAR certification, anyone planning 15+ year ownership and focused on utility bill reduction, or customers in regions with rebates requiring 16+ SEER minimums should explore higher-efficiency alternatives.

3 Ton 13 SEER 80% AFUE 80,000 BTU Goodman Gas Furn
$0
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Installation

Installation requires standard metal exhaust flue venting and either 208/230V single-phase power at 60 Hz. The system demands electrical breaker capacity between 19.1 and 30 amps, typical for residential installations. A-coil configuration suits upflow applications with straightforward ductwork connections. Refrigerant lines accept standard 3/8-inch liquid and 7/8-inch suction copper with 3/8-inch insulation thickness. Most contractors complete installation in 4-6 hours on replacement applications.

Warranty & Reliability

Goodman extends a 10-year parts warranty when registered online within 30 days of purchase. This covers compressor, heat exchanger, and major components but excludes routine service items. The warranty supports resale value and provides meaningful protection during the critical first decade of operation, though it falls short of extended coverage available from some competitors.

Specifications

SKULS38783830
Brand/ManufacturerOnline Supply
Cooling BTU36,000
Heating BTU80,000
RefrigerantR410A or R22
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)74
Weight (in lbs)30.000000
FeatureSpec
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorMulti-Speed
Maximum CFM1200
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypeGas
Height26"
Width17.5"
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.
ReplacesGSX130362, GSX130363, GSX130365
Energy StarNo
SEER1 (Efficiency)13
Condenser StagesSingle Stage
Compressor TypeReciprocating
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size30 amps
Min. Breaker Size19.1 amps
Tonnage3 Ton
Valve TypeSweat
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

How does 80% AFUE compare to modern furnaces in heating cost? +
An 80% AFUE furnace wastes 20% of gas energy, costing roughly $150-200 annually more than a 95% AFUE model in cold climates using 100,000 BTU/hour average input. Over 15 years, that's $2,250-3,000 in additional fuel costs, offsetting much of the initial purchase savings for long-term owners.
Can this system work with existing ductwork from older Goodman equipment? +
Yes. The 1,200 CFM maximum airflow and 3-ton capacity match standard residential ductwork sizing. It directly replaces GSX130362, GSX130363, and GSX130365 models using identical connection points and electrical requirements without ductwork modifications.
Does this system qualify for energy tax credits or rebates? +
Not typically. Federal tax credits currently require minimum 16 SEER for air conditioners and 95% AFUE for furnaces. Many utility rebate programs also exclude 13 SEER systems. Check local incentives, as some regions still offer modest rebates for equipment meeting older standards.
How does this compare to mid-tier brands like Trane or Carrier? +
Goodman is the budget tier. Trane and Carrier's comparable units run 14-16 SEER and 90%+ AFUE, typically costing 40-60% more. Goodman prioritizes upfront price; premium brands emphasize long-term efficiency and quieter operation at higher cost.
What does the 10-year warranty actually cover? +
Parts and compressor defects when registered within 30 days. It excludes labor, refrigerant charges, routine maintenance, and wear items. Most failures occur outside this window anyway, so view it as basic protection rather than comprehensive coverage.

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