Independent Review · Updated June 2026

4 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

Solid mid-tier cooling and heating with variable-speed efficiency at contractor-friendly pricing

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
4 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
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// Bottom Line
This Goodman system works best for homeowners in moderate climates who want dependable heating and cooling without premium pricing. The 14 SEER rating and 80% AFUE deliver respectable efficiency, and the variable-speed blower keeps energy costs reasonable year-round.

Review

The Goodman 4 Ton system (listed as 5 Ton in specs, a common manufacturer rating variance) delivers heating and cooling through a straightforward upflow A-coil configuration. At 100,000 BTU heating capacity and 48,000 BTU cooling output, this mid-capacity unit handles typical single-family homes and small commercial spaces. The brand occupies a reliable middle ground: not budget-basement equipment, but not premium pricing either. Contractors and homeowners value Goodman for straightforward service parts availability and predictable performance.

The 14 SEER cooling efficiency and 80% AFUE heating rating represent solid, practical numbers rather than cutting-edge specs. The variable-speed blower motor adapts airflow between 0 and 2,000 CFM, which reduces waste during partial-load operation. The scroll compressor runs at 74 dB, quiet enough for residential installation. Two-stage burners modulate between low and high fire, reducing short cycling and improving comfort. Electrical requirements are reasonable, needing 26.4 to 45 amp breaker sizing on 120V single-phase power.

Pros & Cons

Pros

  • 14 SEER cooling efficiency matches mid-range market expectations for cost-effective operation
  • 80% AFUE with two-stage burner provides flexible heating that adapts to outdoor temperature
  • Variable-speed blower motor maintains consistent comfort while reducing electricity consumption
  • Scroll compressor design proves durable and runs quietly at 74 dB
  • Two-stage burner minimizes short cycling and extends equipment lifespan

Cons

  • No ENERGY STAR certification limits rebate eligibility in some utility programs
  • Single-stage cooling compressor cannot modulate capacity, meaning less efficient part-load performance
  • 80% AFUE is adequate but trails modern 95% AFUE systems by roughly 15 percentage points

Who Should Buy

Best For

Contractors installing systems for budget-conscious homeowners in climates with moderate cooling demands will appreciate the balance of performance and price. Homeowners replacing older equipment who want meaningful efficiency gains without paying for top-tier components fit this unit perfectly.

Consider Alternatives If

Skip this system if you live in a hot climate where the AC runs constantly, or if missing ENERGY STAR rebates will significantly impact your budget.

4 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Fur
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Installation

Installation requires standard ductwork connections with 3/8 inch liquid lines and 7/8 inch suction lines, both pre-sized for this tonnage. The upflow design suits attics, basements, or utility closets with 34.5 inch height and 21 by 28.75 inch footprint. Metal exhaust flue is mandatory for safe gas venting. The variable-speed motor and two-stage burner integrate with standard thermostats, though a programmable unit maximizes efficiency.

Warranty & Reliability

Goodman backs this system with 10 years of parts coverage upon online registration. This is solid coverage for a mid-range unit, covering compressor failure, heat exchanger cracks, and component defects. Registration is mandatory to activate the warranty, so keep documentation. Labor costs are your responsibility, a standard limitation across the industry.

Specifications

SKULS38783830
Brand/ManufacturerOnline Supply
Cooling BTU48,000
Heating BTU100,000
RefrigerantR410A
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)74
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 Size45 amps
Min. Breaker Size26.4 amps
Tonnage5 Ton
Height34.5"
Width21"
Depth28.75"
ResourcesGoodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual 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 MotorVariable Speed
Maximum CFM2000
Burner StagesTwo
Fuel TypePropane, Natural Gas
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

What's the actual capacity difference between the 4 Ton and 5 Ton rating? +
The nameplate says 5 Ton, but cooling output is 48,000 BTU, which equals 4 tons (12,000 BTU per ton). Manufacturers sometimes oversell tonnage. For a true 5 ton unit, expect 60,000 BTU cooling. This 4-ton cooling capacity suits homes under 2,000 square feet in moderate climates.
Can I install this myself, or do I need a licensed technician? +
Most jurisdictions require licensed HVAC technicians to handle refrigerant, gas connections, and venting. DIY installation voids the warranty and creates safety hazards. Hire licensed contractors. Installation typically costs 1,500 to 3,000 dollars depending on ductwork modifications and regional labor rates.
How does 14 SEER compare to newer SEER2 ratings? +
SEER2 is a stricter testing standard introduced in 2023. A 14 SEER unit typically converts to roughly 11 SEER2 equivalent. Modern units marketed as 16 SEER2 offer noticeably better efficiency. If rebates require SEER2 ratings, this unit won't qualify.
Is Goodman reliable, or should I choose Carrier or Lennox instead? +
Goodman reliability is solid but sits slightly below Carrier and Lennox. All three brands perform well in field studies. Goodman excels in value and parts availability. Premium brands cost 20 to 30 percent more for incremental reliability gains. Choose based on your budget and local service network strength.
What happens if I register for warranty after purchase? +
Online registration is required to activate the 10-year coverage. Register immediately upon installation. Late registration may void claims, though some dealers accept registrations within 30 days. Keep your proof of purchase and installation documentation ready.

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