Independent Review · Updated June 2026

5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

Budget-friendly 5-ton combo with solid efficiency and variable-speed comfort

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
$2071
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system delivers excellent value for contractors and homeowners upgrading older equipment on a tight budget. The 14 SEER cooling and 80% AFUE heating, combined with a variable-speed blower and two-stage burner, make it practical for mixed climates where you need both solid heating and cooling without premium pricing.

Review

The Goodman 5-ton horizontal combo system occupies a practical middle ground in the HVAC market. Priced at $2,071 with an AHRI certificate (204633307), it targets contractors and homeowners seeking reliable heating and cooling without stretching budgets for premium efficiency tiers. The horizontal A-coil configuration makes it well-suited for installation in tight spaces, attics, and crawlspaces where traditional upflow designs won't fit. This system handles both natural gas and propane, expanding installation flexibility across diverse geographic markets.

Performance metrics reflect its mid-range positioning. Cooling delivers 54,000 BTU at 14 SEER efficiency using R410A refrigerant, which qualifies for Energy Star approval and translates to measurable summer utility savings. Heating provides 80,000 BTU at 80% AFUE with a two-stage burner that reduces energy waste during mild weather. The variable-speed blower (maximum 2,000 CFM) runs quieter during partial-load conditions, improving comfort and efficiency compared to single-speed alternatives. Electrical requirements are straightforward: 208-230V single-phase, 29.6 to 50-amp breaker range.

Pros & Cons

Pros

  • Excellent price-to-performance ratio at $2,071 for a complete 5-ton system with AHRI certification
  • 14 SEER cooling efficiency meets Energy Star standards, reducing summer operating costs
  • Two-stage burner and variable-speed blower optimize comfort and energy use across heating seasons
  • Horizontal configuration suits tight installation spaces, crawlspaces, and attic applications
  • 10-year warranty with online registration provides meaningful protection against major failures

Cons

  • 80% AFUE is adequate but lags behind modern 95%+ high-efficiency furnaces by 15 percentage points
  • Single-stage condenser means cooling cycles on-off rather than modulating capacity
  • 73 dBA noise level runs slightly louder than premium variable-capacity competitors during full load

Who Should Buy

Best For

Contractors looking to replace aging 10-15 year old systems and homeowners in mixed climates (heating and cooling equally important) who want reliable performance without paying for premium features they won't fully use. Budget-conscious property managers handling multiple rental units will appreciate the balance of efficiency, durability, and cost.

Consider Alternatives If

Homeowners in cold climates prioritizing maximum winter efficiency should examine 90%+ AFUE models, and those with severe noise concerns or seeking cutting-edge variable-capacity cooling should explore higher SEER single-stage alternatives.

5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furn
$2071
Buy at HVACDirect →

Installation

Installation complexity is moderate. The 38.25-inch height and 35.5-inch width fit tight spaces, but horizontal orientation requires careful ductwork planning to prevent condensate backup. Technicians need metal exhaust flue systems, proper R410A line sizing (3/8-inch liquid, 7/8-inch suction), and 3/4-inch suction line insulation to maintain efficiency. Manufacturer documentation is comprehensive, and most qualified HVAC contractors complete jobs within standard timeframes without complications.

Warranty & Reliability

Goodman backs this system with a 10-year parts warranty upon online registration, a meaningful commitment that covers compressor, heat exchanger, and major components. This warranty duration is industry-standard and provides peace of mind for both contractors and homeowners concerned about unexpected failures during the critical first decade of operation.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU54,000
Heating BTU80,000
RefrigerantR410A
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73
Weight (in lbs)30.000000
FeatureSpec
AHRI Certificate Number204633307
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorVariable Speed
Maximum CFM2000
ConfigurationHorizontal
Burner StagesTwo
Fuel TypePropane, Natural Gas
Height38.25"
Width35.5"
Depth35.5"
ResourcesGoodman Brochure Goodman Specifications Goodman Installation Manual Goodman Warranty Information Goodman Service Instructions Goodman Kit Instructions Goodman Parts Manual 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.
Liquid Line3/8"
Suction Line7/8"
Tonnage5 Ton
StyleA-Coil
Energy StarYes
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
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

How does 14 SEER compare to newer systems, and will I see real savings? +
14 SEER is solid mid-tier cooling efficiency. A home running cooling 2,000 hours yearly saves roughly 20-25% versus 10 SEER equipment. For a $1,200 annual cooling bill, expect $240-300 in annual savings, recovering the efficiency premium within 8-10 years depending on regional electricity costs.
Can this system fit my crawlspace, and what ducting do I need? +
Yes, the horizontal configuration is specifically designed for crawlspaces and attics. Ensure 35.5-inch square clearance and proper return air path. Use 3/8-inch copper liquid lines and 7/8-inch suction lines with 3/4-inch foam insulation. Metal exhaust flue is mandatory, not optional.
Why is the 80% AFUE furnace less efficient than newer models? +
80% AFUE means 20% of fuel heat escapes through the exhaust flue. Modern 95% units recapture that waste heat. Trade-off: 80% units cost less upfront, require simpler metal flue venting (not complex plastic condensing lines), and suit mild climates where heating isn't extreme.
How does this compare to a Lennox or Carrier 5-ton system? +
Goodman is manufacturer-focused on value without sacrificing reliability. Lennox and Carrier typically offer higher SEER ratings (16+) and quieter operation at $3,500-5,000. Goodman wins on price; competitors win on premium efficiency and refinement. Performance is comparable for both brands.
Is the 10-year warranty worth registering online? +
Yes. Online registration is free and takes five minutes. Without it, warranty drops to five years. Ten years covers most compressor and heat exchanger failures, the costliest components. Always register within 30 days of installation.

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