Independent Review · Updated June 2026

3 Ton 15 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

Energy Star matched 80% AFUE furnace with surprising 16 SEER cooling efficiency

7.8
IndustrialRank Score
Efficiency
8.2
Reliability
7.5
Value
8.1
Installation
8.4
Warranty
7.9
3 Ton 15 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This Goodman system works well for contractors and homeowners seeking a budget-conscious, reliable combo unit for moderate climates. The 80% AFUE heating and 16 SEER1 cooling deliver solid mid-range performance without premium pricing, though it lacks variable-stage compressor technology found in higher-tier systems.

Review

Goodman's 3-ton gas furnace and air conditioning combo lands squarely in the mid-market segment where reliability meets affordability. This upflow configuration pairs an 80,000 BTU, 80% AFUE two-stage furnace with a cooling section rated at 34,800 BTU. Energy Star certification signals compliance with federal efficiency baselines, making it practical for replacement projects in homes where equipment longevity matters more than cutting-edge performance. The unit's 10-year registered warranty provides reasonable protection for residential applications.

Cooling efficiency reaches 16 SEER1 through a scroll compressor operating in single-stage mode with R410A or R22 refrigerant compatibility. The high-efficiency multi-speed blower delivers up to 2000 CFM, reducing unnecessary runtime and auxiliary energy consumption. Heating relies on two-stage gas burners at 80% AFUE, adequate for moderate climates but trailing current high-efficiency furnaces targeting 90% to 98% AFUE. At 73.5 dB, sound levels stay acceptable for residential spaces. Electrical requirements are straightforward, needing 120V single-phase 60Hz with 18.7 to 30 amp breaker sizing.

Pros & Cons

Pros

  • Energy Star certified with 16 SEER1 cooling efficiency, exceeding standard baselines for mid-tier equipment
  • Two-stage burner gas furnace at 80% AFUE provides dependable heating for climates without extreme cold demands
  • High efficiency multi-speed blower motor adapts airflow up to 2000 CFM, reducing runtime and energy waste
  • Scroll compressor design known for reliability and quiet operation at 73.5 dB, one of the quieter units in its class
  • Upflow/downflow flexibility with A-coil configuration suits common residential installations without major ductwork changes

Cons

  • Single-stage compressor limits part-load efficiency in mild weather, causing longer run cycles than variable-capacity models
  • 80% AFUE furnace is outdated by modern standards; 95% AFUE high-efficiency units now dominate contractor preference
  • Product listing shows conflicting tonnage specs (3 ton title versus 5 ton in specs), creating confusion about actual capacity

Who Should Buy

Best For

Contractors installing replacement systems in older homes or budget-conscious homeowners in moderate climates (not extreme cold regions). This system shines for builders seeking reliable, code-compliant packages without high-efficiency price tags.

Consider Alternatives If

Skip this if you live in a cold climate requiring high heating efficiency, want modulating furnaces above 90% AFUE, or demand variable-capacity compressors for precise temperature control.

3 Ton 15 SEER 80% AFUE 80,000 BTU Goodman Gas Furn
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Installation

Installation demands standard HVAC practices for upflow applications. The unit requires metal exhaust flue venting and connects via 3/8-inch liquid line and 7/8-inch suction line with 3/4-inch insulation thickness. Pre-charged with up to 50 feet of included suction line simplifies field setup. Dimensions of 30 inches high by 21 inches wide by 21 inches deep fit most closets or utility rooms. Two-stage burner configuration needs proper gas supply sizing and pilot ignition setup, requiring licensed technician involvement.

Warranty & Reliability

The 10-year parts warranty activates through online registration with Online Supply, covering defects in materials and workmanship. This registration requirement means homeowners must complete the process within specified timeframes to maintain protection. Coverage applies to compressor, heat exchanger, and evaporator coil components under normal residential use. Commercial or rental applications typically void coverage, so confirm intended use before purchase.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU34,800
Heating BTU80,000
RefrigerantR410A or R22
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73.5
Weight (in lbs)30.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)16
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size30 amps
Min. Breaker Size18.7 amps
Tonnage5 Ton
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 MotorHigh Efficiency Multi-Speed
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypeGas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Why does the product title say 3 ton but the specs list 5 ton? +
This appears to be a data entry error in the manufacturer or retailer specifications. The cooling BTU of 34,800 aligns with 3-ton capacity (12,000 BTU per ton). Contact the seller to clarify before purchasing, as this confusion could cause sizing mistakes during installation and impact warranty claims.
Can I install this myself or do I need a licensed contractor? +
Gas furnace installation requires a licensed HVAC technician in most jurisdictions due to venting, gas line safety, and combustion testing requirements. Refrigerant handling, electrical connections, and nitrogen pressure testing also demand certification. DIY installation voids the warranty and violates local codes.
How does 16 SEER1 compare to modern air conditioners? +
SEER1 is the updated efficiency metric replacing older SEER ratings. At 16 SEER1, this unit performs solidly but trails premium variable-capacity systems reaching 18 to 22 SEER1. For moderate climates, 16 SEER1 delivers reasonable electric bills without premium costs, though efficiency gains in heating season remain limited at 80% AFUE.
Is this better than a higher AFUE furnace with lower SEER cooling? +
This unit balances both seasons reasonably. In heating-dominated regions, prioritize furnace AFUE above 90%. In cooling-heavy climates, the 16 SEER1 advantage becomes more valuable. For mixed climates, calculate seasonal cost differences based on your local gas and electric rates before deciding.
What happens if I register the warranty late? +
Delayed registration often results in warranty denial or shortened coverage periods. Contact Online Supply immediately after installation to register within their required timeframe, typically 30 to 90 days. Check your documentation for exact deadlines to protect your investment.

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