Independent Review · Updated June 2026

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

Budget-friendly 3-ton combo system with solid 80% AFUE and 13 SEER efficiency

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
$647
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system works best for budget-conscious homeowners in moderate climates who want reliable heating and cooling without premium pricing. At $647, you're getting proven Goodman components with respectable efficiency ratings that won't strain your electrical panel or require major upgrades.

Review

Goodman's 3-ton combination system sits in the practical middle ground of residential HVAC. This particular unit, sold through Online Supply under SKU LS38783830, replaces older GSX130 series condensers and pairs effectively with standard furnaces. At $647, it targets homeowners who prioritize reliability and reasonable efficiency over cutting-edge performance. Goodman equipment dominates contractor installations across North America precisely because it balances solid engineering with accessible pricing.

The furnace delivers 100,000 BTU heating capacity at 80% AFUE with two-stage burners that ramp output based on temperature demand. Cooling pulls 36,000 BTU at 13 SEER through a single-stage reciprocating compressor using R410A or R22 refrigerant. The variable-speed blower motor adapts airflow up to 2000 CFM, preventing energy waste on mild days. These numbers translate to moderate monthly heating costs and respectable cooling performance without the premium efficiency price tag.

Pros & Cons

Pros

  • 80% AFUE furnace efficiency with two-stage burners for better comfort and lower heating bills
  • 13 SEER cooling matches mid-tier air conditioning efficiency standards without Energy Star premium
  • Variable-speed blower motor maximizes comfort by adjusting output to actual heating/cooling demand
  • Compact upflow A-coil design fits tight spaces, 30 inches tall by 21 inches wide
  • Two-stage burner operation reduces short-cycling and extends equipment lifespan
  • 10-year warranty with online registration covers manufacturing defects adequately

Cons

  • Single-stage compressor in cooling side means less precise temperature control than variable-capacity units
  • 80% AFUE is respectable but not premium, missing 90%+ efficiency that newer condensing furnaces offer
  • 74 dB operating noise is moderately loud, noticeable in quiet living spaces
  • Not Energy Star certified, so no utility rebates or tax credits available

Who Should Buy

Best For

Homeowners replacing failed equipment in moderate climates who need reliable performance without premium pricing. DIY-comfortable contractors installing systems for budget-conscious clients will appreciate the straightforward specifications and standard refrigerant compatibility.

Consider Alternatives If

Buyers in extremely cold climates needing maximum heating efficiency or those seeking premium features like variable-stage cooling and quieter operation should look at higher-SEER alternatives.

3 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Fur
$647
Buy at HVACDirect →

Installation

This upflow A-coil configuration requires standard 3/8-inch liquid lines and 7/8-inch suction lines with 3/8-inch insulation thickness. Electrical demand sits between 19.1 and 30 amps at 120V single-phase 60Hz, well within typical home service. The 30-inch height allows installation in most basements and attics. Metal exhaust flue is required for safe operation. Refrigerant line length capacity reaches 30 feet.

Warranty & Reliability

Goodman covers this system for 10 years against manufacturer defects when you register online, which takes five minutes on their website. Registration is mandatory to activate the full term, otherwise coverage drops significantly. This timeframe is industry standard for mid-range equipment. Parts replacement is typically available within one week from major suppliers.

Specifications

SKULS38783830
Brand/ManufacturerOnline Supply
Cooling BTU36,000
Heating BTU100,000
RefrigerantR410A or R22
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)74
Weight (in lbs)30.000000
FeatureSpec
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
Tonnage3.5 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
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

How does 13 SEER compare to modern air conditioners? +
13 SEER is respectable mid-tier cooling efficiency. Premium units reach 16-18 SEER but cost considerably more. For moderate climates with moderate cooling demand, 13 SEER saves money compared to older 10-SEER units while avoiding premium pricing. Annual cooling costs will be 20-30% lower than 2000s-era equipment.
Can I install this myself if I'm handy? +
Mechanical installation is straightforward, but federal law requires EPA certification for refrigerant handling. You can install the furnace, ductwork, and electrical connections yourself, but must hire a licensed technician for refrigerant charging. Expect $200-400 for professional refrigerant work.
Will the 80% AFUE furnace significantly increase heating bills? +
80% AFUE is standard for non-condensing furnaces, losing 20% of fuel energy through exhaust. Upgrading to 95% AFUE condensing models costs 2-3 times more but recovers investment in 7-10 years in cold climates. For moderate heating seasons, the payback extends beyond equipment lifespan.
What's the practical difference between this and higher-SEER systems? +
Higher-SEER units add variable-capacity compressors and better thermal design, costing $1200-1800 more. Monthly cooling cost differences are modest in temperate regions. This system excels for homeowners prioritizing upfront affordability over maximum efficiency optimization.
Does online registration for warranty really matter? +
Yes. Without registering within 30 days, your warranty drops from 10 years to 5 years. Registration takes minutes online and protects your investment. Keep your receipt and proof of professional installation for claims.

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