Independent Review · Updated June 2026

5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

96% AFUE furnace with 16 SEER2 cooling delivers exceptional efficiency in compact horizontal form.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
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// Bottom Line
This 5-ton Goodman system suits contractors and homeowners installing horizontal furnaces in attics, crawlspaces, or utility closets where vertical clearance is limited. The 96% AFUE heating efficiency and 16 SEER2 cooling rating make it a solid choice for mixed climates without premium pricing.

Review

Goodman's horizontal 5-ton system represents solid mid-range equipment designed specifically for installers working in tight spaces. The furnace delivers 120,000 BTU heating output paired with 54,000 BTU cooling capacity, covering most residential comfort needs. With Energy Star certification and a 96% AFUE rating, this unit bridges the gap between budget equipment and premium systems, offering legitimate efficiency gains without luxury-tier complexity or cost.

Performance numbers demonstrate capable engineering across both heating and cooling. The furnace's 96% AFUE converts nearly all fuel to usable heat, significantly outperforming the 80-85% baseline found in older systems. Cooling efficiency registers at 16 SEER2, delivering roughly 25 percent better AC efficiency than minimum 13 SEER2 standards. The multi-speed ECM blower motor provides 2,000 CFM maximum airflow while adapting to actual load requirements, reducing wasted energy during partial-capacity operation.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency reduces heating costs significantly compared to older 80-90% models
  • 16 SEER2 cooling rating delivers strong air conditioning performance in 5-ton capacity
  • Multi-speed ECM blower motor adjusts airflow dynamically, improving comfort and reducing runtime
  • Two-stage burner allows modulated heating for better comfort and efficiency
  • Compact horizontal design, 26 inches wide by 21.125 inches deep, fits tight installation spaces

Cons

  • 73 dB sound level is moderately loud, noticeable in quiet residential settings during operation
  • Requires 208/230V single-phase power, limiting installation flexibility in some older homes
  • Scroll compressor in single-stage condenser configuration may cycle more frequently than variable-capacity systems

Who Should Buy

Best For

Contractors installing replacement systems in homes with limited vertical space, particularly those with attic or horizontal crawlspace furnace placements. Homeowners in moderate climates wanting reliable efficiency without paying for ultra-high SEER2 variable-capacity equipment.

Consider Alternatives If

Anyone needing whisper-quiet operation below 70 dB or living in 120V-only electrical service areas should explore alternatives.

5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Fur
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Installation

Horizontal orientation simplifies installation in attics and crawlspaces where vertical furnaces won't fit. The unit weighs 30 pounds and measures 24.5 inches tall by 26 inches wide, fitting standard return plenums. Plastic PVC exhaust piping requirements streamline venting compared to metal alternatives. Electrical requirements demand 208/230V single-phase 60Hz service with 29.6 to 50-amp breaker capacity, standard in modern homes but worth verifying before ordering.

Warranty & Reliability

Goodman provides 10-year parts coverage with online registration, competitive for this equipment tier. Coverage includes compressor, refrigerant charge, and sealed components, protecting against manufacturing defects. Registration requirement means buyers must complete paperwork promptly. This warranty doesn't cover installation labor or maintenance-related issues, standard industry practice.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU54,000
Heating BTU120,000
RefrigerantR410A or R22
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73
Weight (in lbs)30.000000
FeatureSpec
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE96%
Blower MotorMulti-Speed - ECM
Maximum CFM2000
ConfigurationHorizontal
Flue LocationRight
Energy StarYes
Burner StagesTwo
Fuel TypeGas
Height24.5"
Width26"
Depth21.125"
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.
SEER1 (Efficiency)16
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size50 amps
Min. Breaker Size29.6 amps
Tonnage5 Ton
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

What's the actual difference between 15 SEER and 16 SEER2 ratings? +
SEER2 uses updated testing standards that reflect real-world conditions better than legacy SEER ratings. This 16 SEER2 unit roughly equals an older 21 SEER system in marketing terms. Don't compare SEER and SEER2 directly, they measure different things using different outdoor temperature assumptions and humidity levels.
Can I install this in a vertical upflow configuration or only horizontal? +
This unit supports upflow/horizontal airflow direction, meaning you can use it both ways depending on ductwork design. Upflow works in basements, horizontal in attics or crawlspaces. Verify flue location compatibility with your specific installation before ordering to ensure right-side exhaust positioning works for your venting plan.
How much will the 96% AFUE actually save on heating bills? +
A 96% AFUE furnace costs roughly $100-150 annually less to operate versus an 80% model of equal size in cold climates. Savings depend on heating degree days and natural gas prices in your area. Over 15 years, efficiency gains easily cover the premium spent on high-efficiency equipment.
Does this come with an air handler or is the coil sold separately? +
This is a furnace only specification. The 5-ton cooling capacity matches outdoor AC condenser capacity, but you'll need a compatible evaporator coil installed by your contractor. Goodman coils integrate with this furnace platform, confirmed by included coil warranty documentation.
What's included in the 10-year warranty and how do I activate it? +
Parts warranty covers manufacturing defects in sealed components, compressor, and refrigerant. Online registration required within specific timeframe activates coverage. Check documentation for registration deadlines and procedures, typically accomplished through Goodman's website with proof of purchase.

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