Independent Review · Updated June 2026

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

Solid mid-range split system combining 80% AFUE heating with 13 SEER cooling

7.8
IndustrialRank Score
Efficiency
7.5
Reliability
8.0
Value
8.2
Installation
8.0
Warranty
8.0
2.5 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This Goodman system works best for budget-conscious homeowners in moderate climates who want decent efficiency without premium pricing. It's particularly suited for upflow installations in closets or utility spaces where space is limited.

Review

The Goodman 2.5 Ton system is a practical workhorse in the value segment of residential HVAC equipment. This split system pairs an 80% AFUE gas furnace with a 13 SEER air conditioner, positioning itself as an entry-level modern option for contractors and homeowners seeking reliable cooling and heating without premium pricing. The upflow A-coil configuration suits residential installations in basements, utility closets, and attic applications where space constraints demand compact equipment.

Performance specs tell a straightforward story. The furnace delivers 100,000 BTU of heat via a two-stage burner, while the condenser unit provides 30,000 BTU of cooling capacity. The variable-speed blower motor tops out at 2,000 CFM and adjusts output throughout the day, improving dehumidification during shoulder seasons. At 73 dB, full-load operation produces noticeable noise, though this is typical for single-stage reciprocating compressors. R410A refrigerant is standard, and electrical requirements are modest at 120V single-phase 60 Hz.

Pros & Cons

Pros

  • Two-stage burner provides modulating heat output, reducing short cycling and improving comfort during mild weather
  • 13 SEER cooling efficiency meets baseline modern standards and qualifies for some utility rebates in certain regions
  • 80% AFUE furnace is respectable mid-range efficiency for gas systems, trading cost for modest energy savings
  • Variable-speed blower motor adapts airflow to demand, improving humidity control and reducing energy waste
  • Standard 10-year warranty with online registration offers solid peace of mind at this price point

Cons

  • 13 SEER is dated by 2024 standards, higher SEER ratings (15-18) have become more affordable and offer better long-term ROI
  • 80% AFUE furnace means 20% of heating energy is lost up the flue, missing out on 92-98% efficient condensing options
  • Single-stage compressor cycles on and off rather than modulating, reducing efficiency during partial-load cooling periods
  • 73 dB noise level at full operation is noticeably louder than high-efficiency competitors, which matters in living spaces

Who Should Buy

Best For

Homeowners replacing failed systems on a strict budget, or those in mild climates where peak heating and cooling demands are moderate. Contractors doing value-tier replacements will find this system reliable and straightforward to install.

Consider Alternatives If

Anyone prioritizing long-term energy savings or living in extreme climates should look at 16+ SEER and 95%+ AFUE systems, despite higher upfront cost.

2.5 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas F
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Installation

This system requires straightforward split installation with sweat-type refrigerant connections using 3/8 inch liquid and 3/4 inch suction lines. The condenser weighs 22 pounds, making it manageable for two technicians. Metal exhaust flue is required, and the 50-foot suction line insulation thickness of 3/4 inch allows installation in homes with moderate distances between indoor and outdoor units. Most competent HVAC contractors complete installation in 4 to 6 hours.

Warranty & Reliability

Goodman backs this system with a standard 10-year parts warranty contingent on online registration. This is middle-of-the-road coverage, matching most tier-two manufacturers. Labor warranty typically requires separate extended plan purchase. Registration is straightforward and should be completed within 30 days of installation to activate coverage.

Specifications

SKULS38343850
Brand/ManufacturerOnline Supply
Cooling BTU30,000
Heating BTU100,000
RefrigerantR410A
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73
Weight (in lbs)22.000000
FeatureSpec
Energy StarNo
SEER1 (Efficiency)13
Condenser StagesSingle Stage
Compressor TypeReciprocating
Liquid Line3/8"
Suction Line3/4"
Liquid Valve Size3/8"
Max Breaker Size25 amps
Min. Breaker Size16.7 amps
Tonnage3.5 Ton
Valve TypeSweat
Height34.5"
Width21"
Depth28.75"
ResourcesGoodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual 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 MotorVariable Speed
Maximum CFM2000
Burner StagesTwo
Fuel TypePropane, Natural Gas
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

How does the 13 SEER rating compare to newer systems? +
13 SEER meets baseline modern standards but trails current efficient models offering 15-18 SEER. Higher-SEER systems use variable-speed compressors and larger coils, reducing monthly cooling costs by 15-30% despite higher upfront investment. For long-term ownership, newer efficiency typically pays back within 5-7 years.
Can this system fit in a tight utility closet? +
Yes. At 34.5 inches tall, 21 inches wide, and 28.75 inches deep, the A-coil condenser fits standard 36-inch closet openings. Verify clearance around the unit for airflow and service access. The lightweight 22-pound design aids installation in constrained spaces.
Will the two-stage burner save money on heating? +
Two-stage burners improve comfort and reduce cycling losses compared to single-stage units, but 80% AFUE still loses significant energy. High-efficiency condensing furnaces at 95-98% AFUE would deliver 15-18% lower heating bills, justifying their premium cost in cold climates.
How does this Goodman system compare to Carrier or Lennox equivalents? +
Goodman offers similar specs at lower price points because they skip some premium features like scroll compressors or enhanced insulation. Carrier and Lennox typically cost 20-30% more but often include better warranties and quieter operation at the same efficiency rating.
Does registration really matter for the warranty? +
Yes. Online registration within 30 days activates the 10-year coverage. Without it, warranty defaults to 1 year. Keep registration confirmation and purchase receipt together for any future claims.

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