Independent Review · Updated June 2026

2.5 Ton 16 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

High-efficiency two-stage furnace and AC combo with 96% AFUE and 16 SEER.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
2.5 Ton 16 SEER 96% AFUE 80,000 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 system works best for contractors and homeowners seeking a balanced combination of heating and cooling efficiency without premium pricing. The 96% AFUE furnace and 16 SEER air conditioner make it ideal for mixed climates where both seasons demand serious performance.

Review

The Goodman 2.5 Ton horizontal furnace and air conditioner system occupies a sweet spot in the mid-range HVAC market. At $115 for the condenser unit alone (furnace pricing typically runs $800-1,200 separately), this combination delivers solid efficiency ratings without enterprise-level costs. Online Supply brands like Goodman have earned contractor trust through proven durability and straightforward installation, making this system a practical choice for residential retrofits and new construction alike.

Performance metrics tell the real story here. The furnace achieves 96% AFUE efficiency with dual-stage burners and a variable-speed ECM blower motor that adjusts output between 5-20 amps, reducing electricity waste. The air conditioning side delivers 29,000 BTU cooling capacity at 16 SEER with a scroll compressor and R410A refrigerant compatibility. Operating at 71.5 dBA keeps noise within acceptable residential ranges, though the single-stage condenser means efficiency dips during part-load operation on mild days.

Pros & Cons

Pros

  • 96% AFUE rating delivers excellent heating efficiency, reducing natural gas or propane costs by up to 30% versus older furnaces
  • 16 SEER cooling efficiency qualifies for Energy Star certification and federal tax credits in many states
  • Two-stage burner and variable-speed ECM blower motor optimize comfort and minimize runtime noise at 71.5 dBA
  • Horizontal configuration fits tight attic and crawlspace installations where vertical units won't work
  • 10-year parts warranty with online registration provides solid protection for residential applications

Cons

  • Single-stage condenser limits part-load efficiency in mild weather compared to two-stage units
  • 29,000 cooling BTU specification creates capacity mismatch with the 80,000 BTU furnace, requiring careful load calculations
  • Scroll compressor is durable but louder than rotary designs when running at full capacity

Who Should Buy

Best For

Contractors installing systems in space-constrained horizontal configurations and homeowners in moderate climates wanting reliable, efficient operation without premium features or pricing. This unit suits DIY-friendly installers comfortable with standard refrigerant lines and PVC flue work.

Consider Alternatives If

Buyers in extreme climates needing maximum heating or cooling output should look at higher tonnage models, and those prioritizing whisper-quiet operation should consider variable-capacity compressors.

2.5 Ton 16 SEER 96% AFUE 80,000 BTU Goodman Gas Fu
$115
Buy at HVACDirect →

Installation

This horizontal A-coil design requires careful ductwork planning since airflow direction is fixed downflow/horizontal. Installers need PVC or plastic exhaust flue capability, standard 115V single-phase 60Hz electrical service, and proper breaker sizing between 17.1 and 25 amps. Suction line insulation must reach 3/4 inch thickness, and refrigerant lines extend 50 feet maximum. Most contractors complete installation in 4-6 hours once staging location is confirmed.

Warranty & Reliability

Goodman provides 10 years of parts coverage when you register online after purchase, a significant protection tier for residential systems. This covers compressor, heat exchanger, and controls but typically excludes labor costs. Registration is straightforward through their website and extends manufacturer support beyond the standard 1-year coverage, making it worthwhile for homeowners planning long-term ownership.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU29,000
Heating BTU80,000
RefrigerantR410A or R22
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71.5
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 Size25 amps
Min. Breaker Size17.1 amps
Tonnage3.5 Ton
Height21"
Width21.125"
Depth26"
ResourcesCHPF Installation Manual CHPF 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.
AHRI Certificate Number7368843
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM1600
ConfigurationHorizontal
Burner StagesTwo
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Why does the cooling capacity (29,000 BTU) not match the heating output (80,000 BTU)? +
This reflects regional load differences. Heating demands peak in winter cold snaps, while cooling peaks in summer humidity. The 2.5-ton cooling (30,000 BTU approximate) handles most residential cooling loads adequately. Always confirm sizing via Manual J calculation to prevent oversizing, which wastes energy.
Can I install this myself, or do I need a licensed technician? +
EPA Section 608 certification is required to handle R410A refrigerant in most states. PVC flue and electrical work typically need licensed contractors. Many homeowners handle ductwork prep and staging, then hire professionals for refrigerant charging and safety inspections.
How much will this reduce my heating and cooling bills compared to a 13 SEER, 78% AFUE system? +
The 96% AFUE furnace cuts heating costs roughly 18% versus 78% AFUE units. The 16 SEER air conditioner saves approximately 20% cooling costs over 13 SEER equipment. Combined annual savings typically reach $400-600 in moderate climates, with payback in 8-12 years.
Does this system qualify for rebates or tax credits? +
Yes, Energy Star certification makes it eligible for federal tax credits (currently up to $600-2,000 depending on AFUE and SEER ratings). Many utility companies offer additional rebates. Check with your provider and IRS guidance, as incentives change annually.
What does the 10-year warranty actually cover? +
Parts only. It covers compressor, heat exchanger, blower motor, and controls. You pay labor costs for repairs. Registration is required and free. Excludes damage from installation errors, refrigerant abuse, or improper maintenance.

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