Independent Review · Updated June 2026

2.5 Ton 15 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

High-efficiency horizontal furnace-coil system with 96% AFUE and Energy Star certification

7.8
IndustrialRank Score
Efficiency
8.6
Reliability
7.5
Value
7.2
Installation
8.2
Warranty
8.0
2.5 Ton 15 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
$115
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Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman horizontal system suits homeowners upgrading attic or basement installations where space is tight and efficiency matters. The 96% AFUE heating and Energy Star certification deliver genuine savings on gas bills, though the pricing undercuts expectations for what appears to be a premium unit.

Review

The Goodman 2.5-ton horizontal system bridges budget and performance for contractors and homeowners tackling mid-range replacement projects. Priced at $115 for what appears to be a complete coil unit, this system emphasizes heating efficiency with a 96% AFUE gas furnace paired with an air conditioner section. The horizontal configuration targets installations where vertical space is constrained, such as attics or shallow basement installations. Energy Star certification signals compliance with current efficiency standards, though specification inconsistencies in the documentation raise questions about whether this is current inventory.

Performance data reveals solid heating capability with 100,000 BTU output across two burner stages, supporting homes up to 3,000-3,500 square feet depending on climate zone. The multi-speed ECM blower motor delivers up to 1600 CFM, allowing the furnace to match heating demand and reduce runtime waste. Cooling capacity comes in at 29,000 BTU, which is lower than typical 2.5-ton specifications (usually 30,000 BTU minimum), potentially indicating a conservative design or documentation error. The SEER rating of 16 matches Energy Star qualification, though the product title lists 15 SEER, creating specification confusion that buyers should clarify before purchase.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency reduces heating costs significantly compared to older 80-85% models
  • Energy Star rated system qualifies buyers for utility rebates in many jurisdictions
  • Multi-speed ECM blower motor adjusts airflow from 0 to 1600 CFM for comfort and efficiency
  • Two-stage burner and single-stage compressor provide reliable operation with minimal short-cycling
  • PVC exhaust flue compatibility offers flexibility in existing ductwork configurations
  • 10-year warranty with online registration covers both furnace and evaporator coil

Cons

  • Spec sheet lists both R410A and R22 refrigerant compatibility, which is unusual and may indicate outdated documentation
  • Cooling capacity of 29,000 BTU at 2.5 tons falls below typical tonnage-to-BTU ratios, suggesting moderate summer performance
  • SEER1 rating of 16 is strong but product description claims 15 SEER, creating specification confusion
  • 71.5 dB noise level is moderately loud for residential use, especially during compressor operation
  • Horizontal configuration limits installation flexibility compared to upflow-only units

Who Should Buy

Best For

Homeowners with attic or crawlspace installations who need horizontal mounting and prioritize heating efficiency over cooling capacity. This system works well in moderate climates where gas heating dominates usage patterns and summer cooling demands are secondary.

Consider Alternatives If

Buyers in hot climates requiring heavy cooling duty should look elsewhere, as 29,000 BTU cooling is undersized for true 2.5-ton applications. Those wanting cutting-edge SEER2 ratings should also consider newer units with updated efficiency metrics.

2.5 Ton 15 SEER 96% AFUE 100,000 BTU Goodman Gas F
$115
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Installation

Installation requires 208-230V single-phase 60Hz electrical service with a 17.1 to 25-amp breaker, standard for residential systems. The horizontal A-coil configuration demands careful placement for condensate drainage and proper airflow through return ducts. PVC exhaust flue compatibility simplifies venting in existing homes. Refrigerant line sizing uses 3/8-inch liquid lines and 7/8-inch suction lines with 3/4-inch insulation, requiring proper brazing and evacuation. Pre-installation coordination with a qualified technician is essential for electrical and gas connections.

Warranty & Reliability

The 10-year warranty with online registration covers both the furnace heat exchanger and the evaporator coil, providing meaningful protection against premature compressor or burner failure. Registration is mandatory to activate coverage, so buyers must complete paperwork promptly. This warranty is competitive for mid-range systems, though it excludes labor and routine maintenance. Check with the retailer about any additional coverage options or extended plans.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU29,000
Heating BTU100,000
RefrigerantR410A or R22
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71.5
Weight (in lbs)30.000000
FeatureSpec
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 RequirementPlastic / PVC
Furnace Efficiency / AFUE96%
Blower MotorMulti-Speed - ECM
Maximum CFM1600
ConfigurationHorizontal
Flue LocationRight
Energy StarYes
Burner StagesTwo
Fuel TypeGas
Height21"
Width21.125"
Depth26"
ResourcesCHPF Installation Manual CHPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
SEER1 (Efficiency)16
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size25 amps
Min. Breaker Size17.1 amps
Tonnage3.5 Ton
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Why does the spec sheet list both R410A and R22 refrigerant compatibility? +
This inconsistency suggests outdated documentation. Modern systems use only R410A due to R22 phase-out. Confirm refrigerant type with the seller before purchase, as R410A is standard for current equipment. Using the wrong refrigerant will damage the compressor and void warranty coverage.
Is this system suitable for attic installation in a Southern climate? +
The horizontal configuration works well for attics, but 29,000 BTU cooling capacity is marginal for hot climates where AC runs 6-8 months annually. In Texas or Florida homes above 2,500 square feet, cooling undersizing will force the compressor to run longer, reducing efficiency and lifespan.
How does the 96% AFUE rating compare to my existing furnace? +
If replacing a 1990s-2000s furnace, expect 15-25% lower heating bills from the AFUE upgrade alone. The multi-speed blower further reduces energy use by avoiding full-speed operation during partial-load heating, delivering real savings in temperate months.
What's the difference between the listed 15 SEER and the spec sheet showing 16 SEER1? +
The product title claims 15 SEER, while specs show 16 SEER1. This likely reflects the newer SEER1 testing standard versus older SEER methodology. Request clarification from the supplier about which rating applies to your unit and regional rebate eligibility.
Do I need to register the unit to keep the warranty active? +
Yes, the 10-year coverage requires online registration after installation. Without registration, warranty reverts to a shorter period. Register immediately after installation with proof of purchase and installation date to maximize coverage length.

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