Independent Review · Updated June 2026

3 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

Solid 3-ton mid-efficiency system with proven Goodman reliability and reasonable cooling power

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This 3-ton Goodman system makes sense for homeowners replacing older equipment in moderate climates or those prioritizing upfront savings over premium efficiency. The 14 SEER cooling and 80% AFUE heating hit a practical sweet spot for budget-conscious buyers who still want dependable, durable equipment.

Review

Goodman has built a solid reputation for delivering reliable HVAC equipment at accessible price points, and this 3-ton upflow system reflects that positioning. The unit combines a gas furnace with a matched air conditioning condenser, designed for homes needing both heating and cooling in a single integrated package. It's configured for upflow installation with an A-coil design, making it suitable for many residential retrofit applications where space is limited.

Performance metrics show the system provides 36,000 BTU of cooling capacity at 14 SEER efficiency, which is respectable for mid-market equipment. The furnace delivers 100,000 BTU of heating output at 80% AFUE with a two-stage burner setup, allowing it to modulate heating intensity. The scroll compressor operates at 73 dB, while the multi-speed blower handles airflow up to 2000 CFM. These specifications position it as a practical choice for homeowners balancing performance needs with budget constraints.

Pros & Cons

Pros

  • 14 SEER rating delivers respectable cooling efficiency at mid-market price point
  • 80% AFUE furnace with two-stage burners provides reasonable heating performance and fuel economy
  • 36,000 BTU cooling and 100,000 BTU heating covers 3-ton capacity needs appropriately
  • Multi-speed blower motor allows customized airflow from 0 to 2000 CFM for comfort control
  • 10-year warranty with online registration covers compressor and parts comprehensively
  • Scroll compressor design is proven reliable with lower noise output at 73 dB

Cons

  • 80% AFUE is dated by current standards, modern systems reach 95%+ efficiency and lower heating bills significantly
  • Single-stage compressor means the unit runs at full capacity or off, no modulation for mild conditions
  • Not Energy Star certified, missing potential utility rebates that could offset purchase cost
  • 73 dB noise level is moderately loud, may be noticeable during operation in quiet residential settings

Who Should Buy

Best For

Homeowners in moderate climates seeking equipment replacement without premium pricing, or contractors building budget-friendly packages for rental properties and secondary residences. This system works well for climates where heating and cooling demands are balanced rather than extreme.

Consider Alternatives If

Buyers in high-efficiency-focused regions with significant energy rebates, those seeking quieter operation, or homeowners in extreme climates where higher SEER and AFUE ratings deliver faster payback periods.

3 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Fur
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Installation

Installation requires standard refrigerant line work with 3/8 inch liquid and 3/4 inch suction lines, both valve sizes matching those dimensions. The unit requires 120V single-phase 60Hz electrical service with a minimum 18.7 amp breaker and maximum 30 amp capacity. Dimensions of 34.5 inches high by 21 inches wide by 28.75 inches deep fit most standard closets and mechanical spaces. A metal exhaust flue is mandatory for safe furnace venting.

Warranty & Reliability

Goodman backs this system with a 10-year warranty that applies to compressor and parts when you register online. This is generous coverage that typically runs longer than budget competitors, providing meaningful protection against manufacturing defects. Online registration is straightforward and unlocks the full warranty term, making it worth completing at installation.

Specifications

SKULS38343830
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)73
Weight (in lbs)35.000000
FeatureSpec
Energy StarNo
SEER1 (Efficiency)14
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Line3/8"
Suction Line3/4"
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size30 Amps
Min. Breaker Size18.7 Amps
Tonnage3.5 Ton
Height34.5"
Width21"
Depth28.75"
ResourcesGoodman Brochure Goodman Installation Manual Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman 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.
ConfigurationUpflow/Horizontal
StyleA-Coil
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorMulti-Speed
Maximum CFM2000
Burner StagesTwo
Fuel TypeGas
Suction Line Insulation Thickness3/4"
Length30 feet

Frequently Asked Questions

How does the 14 SEER rating compare to current efficiency standards? +
14 SEER is solid mid-range efficiency, performing better than 10-12 SEER budget units but trailing newer 16-18 SEER systems. For mild climates with moderate cooling loads, the difference in annual energy cost may only be a few hundred dollars, making this appropriate if upfront budget is tight.
Can this system work with R22 refrigerant if my home uses older lines? +
Yes, the spec sheet lists compatibility with either R410A or R22, offering flexibility during retrofit installations. However, R22 is being phased out due to environmental regulations, so ensure availability where you live before committing to legacy refrigerant.
What does the two-stage burner accomplish in the furnace? +
Two-stage burners allow the furnace to fire at reduced capacity during mild weather, reducing cycling and improving comfort. This also lowers energy consumption compared to single-stage designs that run full blast regardless of actual heating demand.
How does this compare to higher SEER systems for long-term value? +
A 16-18 SEER system costs more upfront but can recoup the difference through lower cooling bills, especially in hot climates. In moderate areas, payback may take 8-10 years, making this 14 SEER unit smarter if you plan to stay five years or less.
Is online registration required to activate the warranty? +
Yes, you must register online to claim the full 10-year coverage. Without registration, warranty terms are typically shorter, so complete this immediately after installation to protect your investment.

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