Independent Review · Updated June 2026

5 Ton 14.5 SEER 80% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

Solid 5-ton combo system with 14.5 SEER cooling and 80% AFUE heating for budget-conscious contractors

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 14.5 SEER 80% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
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// Bottom Line
This Goodman system delivers proven baseline performance for residential replacements and new construction where upflow or horizontal mounting is required. It's engineered for contractors who prioritize straightforward installation and reliable operation over premium efficiency features.

Review

This 5-ton Goodman gas furnace and air conditioner system represents the practical workhorse of residential HVAC replacements. Built for contractors who value installation speed and proven reliability, it combines a cooling condenser with 60,000 BTU capacity and a heating furnace rated at 120,000 BTU. The horizontal A-coil configuration makes it popular for attic and crawlspace applications where vertical clearance is limited. At this price point, Goodman continues capturing budget-sensitive segments that prioritize dependability over premium efficiency.

Cooling efficiency reaches 14.5 SEER through a scroll compressor and single-stage operation that keeps design simple and repair-friendly. The furnace delivers 80% AFUE with two-stage burner control, allowing low-fire operation during mild weather to reduce cycling losses. Multi-speed blower motor adjusts to 2,000 CFM maximum, matching airflow to system load. The 75 dB noise rating is acceptable for basements but noticeably louder than variable-speed alternatives. Electrical requirements run 32.8 to 50 amp breaker range at 120V single-phase, standard for residential retrofit work.

Pros & Cons

Pros

  • 14.5 SEER cooling efficiency meets modern standards for 5-ton applications, delivering 60,000 BTU cooling capacity
  • Two-stage burner with 120,000 BTU heating output provides proportional comfort without constant cycling
  • Multi-speed blower motor and 2,000 CFM maximum airflow adapt to variable load conditions
  • Compact horizontal A-coil configuration fits tight attic and basement spaces in 34.5" height
  • 10-year warranty with online registration covers parts and labor on a trusted Goodman platform

Cons

  • 80% AFUE furnace efficiency lags behind 90%+ models, adding 15-20% to annual heating costs in cold climates
  • Single-stage compressor cycles rather than modulates, creating temperature swings and lower efficiency at partial load
  • 75 dB noise level runs louder than variable-speed competitors, noticeable in basements or attics near living spaces
  • Not ENERGY STAR certified, missing utility rebates available for higher-efficiency systems

Who Should Buy

Best For

Contractors replacing worn Goodman systems on tight budgets and homeowners in moderate climates where heating needs are secondary. This system excels in rental properties and flip scenarios where first cost matters more than long-term energy savings.

Consider Alternatives If

Energy-conscious homeowners in cold climates should explore 90%+ AFUE or variable-capacity systems. Anyone chasing ENERGY STAR rebates or seeking the quietest operation will find better alternatives.

5 Ton 14.5 SEER 80% AFUE 120,000 BTU Goodman Gas F
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Installation

Installation favors horizontal mounting in attics and crawlspaces, where the 34.5-inch height clears most framing. Suction and liquid lines use standard 7/8-inch and 3/8-inch connections respectively, with 3/8-inch insulation thickness on suction to prevent condensation. Exhaust requires metal flue venting. Multi-speed blower simplifies ductwork balancing. Most contractors complete rough-in and startup in one day on replacement jobs without complications.

Warranty & Reliability

Goodman covers this system for 10 years on parts and labor with online registration, a solid baseline for the price segment. Registration is straightforward through Goodman's website. Coverage includes compressor, heat exchanger, and blower assembly. This warranty positions the system competitively against other budget brands but trails extended coverage available from higher-tier manufacturers.

Specifications

SKULS38783830
Brand/ManufacturerOnline Supply
Cooling BTU60,000
Heating BTU120,000
RefrigerantR410A
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)75
Weight (in lbs)30.000000
FeatureSpec
Energy StarNo
SEER1 (Efficiency)14
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size50 amps
Min. Breaker Size32.8 amps
Tonnage5 Ton
Height34.5"
Width24.5"
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
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorMulti-Speed
Maximum CFM2000
Burner StagesTwo
Fuel TypeGas
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

Is 14.5 SEER cooling efficiency competitive for 2024? +
14.5 SEER meets minimum efficiency standards but ranks below 16+ SEER variable-capacity competitors. For moderate climates, it delivers acceptable cooling costs. Cold climates and high-load homes benefit more from premium systems with variable compressors that match capacity to demand.
Can this system fit in a standard attic space? +
Yes. The 34.5-inch height, 24.5-inch width, and 28.75-inch depth fit most residential attics. Horizontal A-coil orientation accommodates crawlspaces and side-by-side ductwork layouts. Verify clearance above the unit for service access on the top connections.
How does 80% AFUE compare to modern furnace standards? +
80% AFUE ranks as baseline efficiency, meaning 20% of gas energy exits through the flue unused. 90% AFUE and 95% condensing models recover more heat but cost $800-1,200 more upfront. Payback depends on heating degree days in your climate and gas rates.
Should I choose this over a Lennox or Carrier equivalent? +
Goodman competes on price and parts availability through supply networks. Lennox and Carrier often offer higher SEER ratings and quieter operation but at 15-20% premium. For contractors prioritizing fast installation and low first cost, Goodman holds advantage.
Does online registration really matter for the warranty? +
Yes. Registration secures the 10-year coverage. Without it, coverage drops to 5 years parts and 1 year labor. Registration takes minutes on Goodman's website and is essential before turning on the system.

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